lee loong chuen, md gezani md ghazi, hukil sino.  (2024).  nontargeted data analysis strategy in forensic discrimination of gasoline based on gc-ms data and classification and regression tree (cart).  - 5th advanced chemistry world congress.  1-17. 

lee loong chuen, cherayna a/p amnuai, lee siew wei, norwahida zamani & hukil sino.  (2024).  assessment of normalization methods in preprocessing of gc-fid data of red pen inks for forensic investigation.  - #rscposter conference 2024.  1. 

nadirah abd hamid, hukil sino, nur anisa binti mohd rashid, loong chuen lee.  (2024).  assessment of normalization methods in preprocessing of uhplc data of soils for forensic investigation.  - #rscposter conference 2024.  1. 

putri malika nurhafidzah hutagalung, sharveena subahar, basyirah badrulhisam, nureen izzaty naily sahruddin, nurhanis khairuddin, lee loong chuen.  (2023).  expectation of forensic science studies: course organization.  - lmcw2022 set 18.  1. 

lee loong chuen;azhar bin abdul halim;hukil bin sino.  (2023).  pembangunan pendekatan pemprofilan novel dengan teknik kromatografi cecair berprestasi-ultra (uplc) dan teknik kemometrik untuk analisis forensik tanah.  - .  . 

lee loong chuen, nur ain najihah mohd rosdi, hukil sino.  (2023).  assessing temporal variation of malaysian soils using machine learning tools for forensic investigation.  - 10th international congress on fundamental and applied sciences.  1-12. 

nur ain najihah binti mohd rosdi, loong chuen lee, nur izzma hanis abdul halim, jeevna sashidharan, hukil sino.  (2023).  exploring spatial variation of soils using self-organizing maps (soms) and uhplc data for forensic investigation.  - international joint conference on advances in computational intelligence.  317-326. 

alyssa zalifah hj zainal zahir, khairi zubaidi zakaria, muhammad afiq khalid, rhunidha thawiphan manod, tham jia ci, lee loong chuen.  (2023).  interaction & involvement in class.  - lmcw2022 set 18.  1. 

ifa suefiqah mohd zulfikar, muhammad izhan sabri, sadna thrukkumar, nur izzaty mohd zafirudin, asyraf izzuddin mohd nazari, lee loong chuen.  (2023).  ideal performances required in the teaching system, c2: presentation and involvement.  - lmcw2022 set 18.  1. 

praveen raj suresh, naveena soma devan, nur syazwanis nabila che manshor, siti fatimah abdul rahman, lee loong chuen.  (2023).  expectation of forensic students towards their lecturers, c4: knowledge content.  - lmcw2022 set 18.  1. 

varunesh mauthialagan, nur nabila zulkifli, rabaya tahang, karesne kohsalan, lee loong chuen.  (2023).  c5: active learning and enjoyable lessons in classroom.  - lmcw2022 set18.  1. 

nur nayli aqilah shahrin, loong chuen lee, muhamad hasamizi mustapa, hukil sino.  (2023).  low carbon city in klang valley city councils participation.  - malim: jurnal pengajian umum asia tenggara.  191-204. 

loong chuen lee, nur ain najihah mohd rosdi, hukil sino.  (2023).  coupling of self-organizing maps (soms) with principal component analysis (pca) in interpreting high dimensional uhplc data of soil.  - seminar kebangsaan institut statistik malaysia.  1. 

lee loong chuen, nur ain najihah mohd rosdi, hukil sino.  (2023).  evaluation of normalization methods in preprocessing of uhplc data of soils for forensic investigation.  - 2023 #rscposter twitter conference.  1. 

muhamad adib bin ahmad, loong chuen lee, nur ain najihah mohd rosdi, nadirah binti abd hamid, ab aziz ishak, and hukil sino.  (2023).  comparing baseline correction algorithms in discriminating brownish soils from five proximity locations based on uplc and pls-da methods.  - forensic science research.  313-320. 

wan nurdini bt wan mohd hassim, lee loong chuen, hukil sino, mohammad izzharif abdul halim.  (2023).  exploring inter-brand variations of malaysian gasoline based on atr-ftir spectra and chemometric methods.  - 16th asian conference on analytical sciences (asianalysis xvi) 2023 symposium on forensic science.  1-17. 

nadirah abd hamid, hukil sino, lee loong chuen.  (2023).  exploring inter-source variations of malaysian soils based on uhplc fingerprint combined with chemometrics for forensic provenance.  - 16th asian conference on analytical sciences (asianalysis xvi) 2023 symposium on forensic science.  1-18. 

md gezani bin md ghazi, loong chuen lee, aznor sheda binti samsudin, hukil sino.  (2023).  comparison of decision tree and naïve bayes algorithms in detecting trace residue of gasoline based on gas chromatography mass spectrometry data.  - forensic sciences research.  249-255. 

lee loong chuen, nur ain najihah mohd rosdi, nadirah abd hamid, hukil sino.  (2023).  evaluating non volatile organic profile variability of ukm forest reserve soils for forensic provenance.  - 15th afsn annual meeting & symposium.  1-19. 

nadirah binti abd hamid, nur ain najihah binti mohd rosdi, hukil sino, lee loong chuen.  (2023).  mini review on instrumental techniques in profiling soil for forensic investigation.  - the 3rd virtual international symposium on sciences 2023.  1-14. 

wan nurdini bt wan mohd hassim, loong chuen lee, hukil sino, mohammad izzharif abdul halim.  (2023).  mini review on instrumental techniques in fuel profiling.  - the 3rd virtual international symposium on sciences 2023.  1-12. 

yaishnavee a/p ravi, nur ain najihah binti mohd rosdi, nadirah abd hamid, hukil sino, loong chuen lee.  (2023).  comparison of gap-segment and savitzky-golay algorithms in forensic discrimination of soils based on ultra-performance liquid chromatography data.  - journal of analytical chemistry.  1398-1405. 

loong chuen lee, nur fatin syuhada binti roslee & hukil sino.  (2023).  evaluating morphometric feature variability of handwritten numerals among malaysian malays using self-organizing maps.  - proceedings of 3rd international conference on artificial intelligence: advances and applications.  387-394. 

hukil sino, raja muhammad zuha raja kamal bashah, lee loong chuen, atiah ayunni abdul ghani, khairil anuar mohamed, muhamad hasamizi mustapa.  (2023).  potensi mpaj kearah bandaraya rendah karbon menggunakan pendekatan 3ps.  - impak.  30-31. 

loong chuen lee, ameeta a/p nai eyan, anas fahmi zakaria, nurul syahiera kharudin, ab aziz ishak, hukil sino.  (2023).  peranan tanah dalam konteks sains forensik.  - impak.  46-47. 

nurul huda abd karim, juan joon ching, lee loong chuen, atiah ayunni abdul ghani, loh kee shyuan, nadhratum naiim mobarak, wan nur aini wan mokhtar, goh choo ta, nurul izzaty hassan, nurul asikin mijan.  (2022).  virtual karnival kemahiran & kerjaya kimia malaysia (k4m) 2022.  - berita ikm.  40. 

nurul huda abd karim, juan joon ching, lee loong chuen, atiah ayunni abdul ghani, loh kee shyuan, nadhratum naiim mobarak, wan nur aini wan mokhtar, goh choo ta, nurul izzaty hassan, nurul asikin mijan.  (2022).  virtual karnival kemahiran & kerjaya kimia malaysia (k4m) 2022.  - berita ikm.  40. 

norazwani binti ali, loong chuen lee, and ab aziz ishak.  (2022).  evaluation of row-wise manipulations for the forensic differentiation of malaysian soils based on ultra-performance liquid chromatographic profiles.  - journal of analytical chemistry.  347-360. 

md gezani md ghazi, loong chuen lee, hukil sino, mohamed izzharif abdul halim.  (2022).  review of contemporary chemometric strategies applied on preparing gcms data in forensic analysis.  - microchemical journal.  1-13. 

han jia siew, nur syahmimi nadwa mohd isa, lee siew wei, izzah salimah amran, hemavashini a/p krebanatham, lee loong chuen.  (2022).  status jangkitan covid-19 dan status vaksinasi pelajar sains forensik ukm.  - poster lmcw2022: pengurusan dan analitik data.  1. 

daniah aqilah binti masni shanizan, nur amalia binti abdul rahim, nur izzatul hafizza binti zamri, muhammad hasrul bin mohd zamri, praveen a/l krishna murthi, yogendra a/l krishna, lee loong chuen.  (2022).  socioeconomic status and commitment towards study (ukm forensic science students).  - poster lmcw2022: pengurusan dan analitik data.  1. 

loong chuen lee, md gezani md ghazi, hukil sino.  (2022).  a mini review on the statistical modelling of chromatographic profiles of fire debris for forensic investigation.  - international symposium on science & technology ukm- psu 2022.  47-50. 

md gezani md ghazi, loong chuen lee, hukil sino.  (2022).  elucidating gc-ms profile difference between ron95 and ron97 gasoline using principal component analysis.  - international symposium on science & technology ukm-psu 2022.  55-58. 

loong chuen lee, nur fatin syuhada binti roslee, hukil sino.  (2022).  evaluating morphometric feature variability of handwritten numerals among malaysian malays using self-organizing maps.  - 3rd international conference on artificial intelligence: advances and applications (icaiaa 2022).  1-10. 

md gezani md ghazi, lee loong chuen, hukil sino & raja m zuha.  (2022).  elucidating gc-ms profile difference between ron95 and ron97 using principal component analysis.  - international symposium on science and technology ukm-psu 2022 (isstup2022).  66. 

loong chuen lee, md gezani md ghazi, hukil sino, raja m. zuha.  (2022).  a mini review on overview of statistical modelling of gc-ms/gcfidprofiles of fire debris for forensic investigation.  - international symposium on science & technology ukm-psu 2022 (isstup2022).  59. 

loong chuen lee, ab aziz ishak, ameeta a/p nai eyan, anas fahmi zakaria, nurul syahiera kharudin, nor azman mohd noor.  (2022).  forensic profiling of non-volatile organic compounds in soil using ultra-performance liquid chromatography: a pilot study.  - forensic science research.  761-773. 

loong chuen lee, md gezani md ghazi, hukil sino.  (2022).  evaluation of normalization methods in processing gas chromatographic data of neat gasoline for forensic investigation.  - 2022 #rscposter twitter conference.  1. 

loong chuen lee, nur izzati bohari, siti norfaraan abd sanih, muhammad yusuf adam.  (2022).  forensic fingerprint analysis using self-organizing maps, classification and regression trees and naïve bayes methods.  - international journal of computing and digital systems.  1479-1490. 

loong chuen lee, hukil sino.  (2022).  assessment of the spatial variability of air pollutant concentrations at industrial background stations in malaysia using self-organizing map (som).  - congress on intelligent systems (cis2021).  291-304. 

vavaenesh sri danaeysan a/l ramesh, loong chuen lee, mohd hasamizi mustapa, nur nayli aqilah shahrin, hukil sino.  (2022).  the potential and challenges of ampang jaya municipal council (mpaj) towards achieving low carbon city (lcc): community perspectives.  - malim: jurnal pengajian umum asia tenggara.  292-304. 

loong chuen lee, nur ain najihah mohd rosdi, hukil sino.  (2022).  forensic discrimination of organic compositional fingerprint of soils from fernarium and forest universiti kebangsaan malaysia.  - physical and integrated sciences conference 2022.  1-14. 

loong chuen lee, nadirah abd hamid, nur ain najihah mohd rosdi, hukil sino.  (2022).  evaluation of column-wise manipulations on ultra-performance liquid chromatography (uplc) data for forensic soil discrimination.  - educatum journal of science, mathematics and technology.  99-107. 

nur ain najihah bt mohd rosdi, loong chuen lee, hukil sino.  (2022).  evaluating variability of physico-chemical properties of soils from urban park of tasik permaisuri cheras for forensic purpose.  - asian journal of medicine and biomedicine.  71-72. 

loong chuen lee, hukil sino, nor azman mohd noor, saiful mohd ali, azhar abdul halim.  (2022).  prediction of the geographical origin of soils using ultra-performance liquid chromatography (uplc) fingerprinting and k-nearest neighbor (k-nn).  - proceedings of 2nd international conference on artificial intelligence: advances and applications.  47-56. 

nur ain najihah binti mohd rosdi, loong chuen lee, nur izzma hanis binti abdul halim, jeevna sashidharan, and hukil sino.  (2022).  exploring spatial variation of soils using self-organizing maps (soms) and uhplc data for forensic investigation.  - 6th international joint conference on advances in computational intelligence ijcaci 2022.  1-11. 

nur ain najihah binti mohd rosdi, loong chuen lee, and hukil sino.  (2022).  exploring temporal variation of soil using self-organizing maps (soms) for forensic investigation.  - national forensic science symposium (nfss) 2022.  1-11. 

nur fatin syuhada, loong chuen lee, hukil sino.  (2022).  exploring discriminative capability of numeral 4 for forensic investigation.  - national forensic science symposium (nfss) 2022.  1-12. 

lee loong chuen, md gezani md ghazi, hukil sino.  (2022).  assessment of inter-station variation of gasoline for forensic investigation by using gc-ms data and principal component analysis.  - world forum for women in science 2022 (wfws, malaysia) and 7th international conference for women in science without borders (wiswb2022)..  47. 

nur ain najihah binti mohd rosdi, loong chuen lee, hukil sino.  (2022).  evaluating variability of physico-chemical properties of soils from urban park of tasik permaisuri cheras for forensic purpose.  - health sciences symposium 2022.  1. 

md gezani bin md ghazi, loong chuen lee, aznor sheda binti samsudin, hukil sino.  (2022).  evaluation of ensemble data preprocessing strategy on forensic gasoline classification using untargeted gcms data and classification and regression tree (cart) algorithm.  - microchemical journal.  1-11. 

md gezani md ghazi, loong chuen lee, raja muhamad zuha, hukil sino.  (2022).  application of cart algorithm in detecting trace residue of gasoline based on gc-ms data for forensic investigation.  - international fundamental science congress 2021 (ifsc 2021).  6-10. 

loong chuen lee, hukil sino, abdul halim azhar, norazman bin mohd noor, saiful fazamil bin mohd ali.  (2022).  predicting source of brown soils from proximity locations using random forests for forensic investigation.  - the 12th international fundamental science congress 2021 (ifsc 2021).  2-5. 

loong chuen lee, md gezani md ghazi, hukil sino.  (2022).  perspective on gas chromatography application in forensic fire debris analysis.  - berita ikm chemistry in malaysia.  22-23. 

loong chuen lee.  (2021).  modelling of atr-ftir spectral data using k-nearest neighbors: evaluation of data preprocessing techniques.  - junior science communication.  11-13. 

loong chuen lee, ameeta a/p nai eyan, nor azman mohd noor, saiful fazamil mohd ali, hukil sino, azhar abdul halim.  (2021).  discrimination of brown soils using ultra-performance liquid chromatography (uplc) and principal component analysis.  - acs spring 2021.  1-10. 

loong chuen lee, hukil sino, nor azman mohd noor, saiful mohd ali and azhar abdul halim.  (2021).  prediction of the geographical origin of soils using ultra-performance liquid chromatography (uplc) fingerprinting and k-nearest neighbor (k-nn).  - 2nd international conference on artificial intelligence: advances and applications (icaiaa 2021).  1-12. 

loong chuen lee, hukil sino.  (2021).  comparative study between soms & pca for assessment of temporal variations of air pollutants.  - .  1-11. 

loong chuen lee, norazwani ali, nor azman mohd noor, saiful fazamil mohd ali, hukil sino, azhar abdul halim.  (2021).  evaluation of row-wise manipulations on uplc chromatogram to enhance discrimination of red soils.  - 4th analytical chemistry and separation sciences virtual event.  1. 

lee loong chuen.  (2021).  a study to explore discriminative power of atr-ftir spectroscopy for forensic paper analysis using decision tree method.  - journal of analytical chemistry.  95-101. 

loong chuen lee, hukil sino.  (2021).  comparison between self-organizing maps and principal component analysis for assessment of temporal variations of air pollutants.  - 3rd international conference on communication and computational technologies (iccct 2021).  49. 

lee loong chuen, darrelyn christine nestor, nurul syafiqah azizam.  (2021).  a forensic study of ethnicity and sex differences in fingerprint patterns in a malaysian subpopulation.  - medicine & health.  92-107. 

lee loong chuen, abdul aziz jemain.  (2021).  on overview of pca application strategy in processing high dimensionality forensic data.  - microchemical journal.  1-16. 

loong chuen lee, hukil sino, nor azman mohd noor, saiful mohd ali, azhar abdul halim.  (2021).  predicting source of brown soils from proximity locations using random forests for forensic investigation.  - 12th international fundamental science congress (ifsc) 2021.  1-12. 

choong yan teem, danish oh fahmi bin muhd. jeffri oh, chooi hong liang, nurdalila natasya binti zaid, siti rabiah binti abdullah, lee loong chuen.  (2021).  statistical analysis of journal paper authored by lecturers of forensic science programme ukm: 2012-2016.  - .  1. 

jashvinder singh mann, chee ming yao, loh bi jia, nurin haziqah binti razali, nur diyana binti zainudin, lee loong chuen.  (2021).  data analysis of journal articles authored by forensic science lecturers in ukm (2017-2021).  - .  1. 

loong chuen lee, ab aziz ishak, nadirah abdul hamid, yaishnavee ravi, muhamad adib ahmad and norazwani ali.  (2021).  a comparison between univariate and multivariate statistical techniques to determine source of pen inks using ultra-performance liquid chromatography (uplc) chromatograms.  - journal of liquid chromatography & related technologies.  1-11. 

loong chuen lee, nadirah abd hamid, nor azman mohd noor, saiful fazamil mohd ali, hukil sino, azhar abdul halim.  (2021).  assessment of column-wise manipulations on uplc chromatograms of red soils.  - 4th analytical chemistry and separation sciences virtual event.  1. 

nurizatul ain zahari, raja m. zuha, loong chuen lee, muhammad hasamizi mustapa & hukil sino.  (2021).  prospek lembah klang ke arah bandar rendah karbon.  - malim: jurnal pengajian umum asia tenggara.  163-179. 

loong chuen lee, muhamad adib ahmad, nor azman mohd noor, saiful fazamil mohd ali, hukil sino, azhar abdul halim.  (2021).  comparing baseline correction algorithms in discriminating five brown soils.  - 4th analytical chemistry and separation sciences virtual event.  1. 

loong chuen lee, yaishnavee ravi, nor azman mohd noor, saiful fazamil mohd ali, hukil sino, azhar abdul halim.  (2021).  performances of derivative algorithms in uplc chromatograms of red soils.  - 4th analytical chemistry and separation sciences virtual event.  1. 

md gezani md ghazi, loong chuen lee, raja m. zuha, hukil sino.  (2021).  identification of tic regions unique to detection of burnt gasoline residues using principle component analysis (pca).  - international postgraduate e-symposium 2021 (ipes).  1. 

loong chuen lee, hukil sino.  (2021).  comparison between self-organizing maps and principal component analysis for assessment of temporal variations of air pollutants.  - proceedings of international conference on communication and computation.  855-866. 

md gezani md ghazi, loong chuen lee, raja m. zuha, hukil sino.  (2021).  application of cart algorithm in detecting trace residue of gasoline based on gc-ms data for forensic investigation.  - 12th international fundamental science congress (ifsc) 2021.  1-16. 

lee loong chuen, hukil sino.  (2021).  pentafsiran data gc-ms sisa terbakar untuk penyiasatan forensik.  - .  1-11. 

loong chuen lee, hukil sino.  (2021).  assessment of the spatial variability of air pollutant concentrations at industrial background stations in malaysia using self-organizing map (som).  - congress on intelligent systems cis 2021.  27. 

loong chuen lee, hukil sino.  (2021).  assessment of the spatial variability of air pollutant concentrations at industrial background stations in malaysia using self-organizing map (som).  - .  1-11. 

ain farisha, hukil sino & loong chuen lee.  (2021).  penggunaan penyedut minuman dalam kalangan pelajar prasiswazah ukm.  - icitra international conference on liberal studies 2021.  269-272. 

ain farisha,hukil sino, loong chuen lee.  (2021).  penggunaan penyedut minuman dalam kalangan pelajar prasiswazah ukm.  - icitra international virtual conference on liberal studies 2021.  43. 

md gezani md ghazi, loong chuen lee, aznor sheda samsudin, raja m. zuha, hukil sino.  (2021).  exploratory study of gasoline ron95 and ron97 by gas chromatography-mass spectrometry and principal component analysis.  - kolokium siswazah fakulti sains kesihatan 2021.  1. 

loong chuen lee, nor azman mohd noor, saiful fazamil mohd ali, hukil sino, azhar abdul halim.  (2021).  ultra-performance liquid chromatography (uplc) method for forensic soil profiling.  - tokyo international conference.  7. 

lee loong chuen;liong choong yeun.  (2020).  developing statistical framework for atr-ftir spectra modeling towards establishment of ink database management system for forensic science application in malaysia: variable reduction aspects..  - .  . 

lee loong chuen, darrelyn christine nestor, nurul syafiqah azizam.  (2020).  a forensic study of ethnicity differences in fingerprint patterns in a malaysian adult population.  - medicine & health.  96. 

loong chuen lee, abdul aziz jemain.  (2020).  the application of topsis in the selection of statistical prediction model: a forensic ink analysis case study.  - 2020 international conference on decision aid sciences and application (dasa).  68-72. 

lee loong chuen.  (2020).  comparison of stratified and random iterative sampling in evaluation of pls-da model.  - european proceedings of social and behavioural sciences.  648-656. 

lee loong chuen.  (2020).  evaluations of sequential pre-processing strategy on spectral data for forensic ink analysis purpose.  - chemical science symposium 2020: how can machine learning and autonomy accelerate chemistry?.  1. 

lee loong chuen, atiah ayunni abdul ghani.  (2020).  tatacara pengendalian piawai (sop) spektroskopi inframerah transformasi fourier (ftir).  - .  1-52. 

haney karmila, nur fatin syuhada, chia lee xian, izzatul illya, sharvin hanadorai, lee loong chuen.  (2020).  statistik bidang kajian tahun akhir pelajar prasiswazah forensik ukm (2010-2013).  - .  1. 

t'ng qi feng, zulhairi bin sulaiman, nur alyssa, amirah hanan, sharifah nurliyana, lee loong chuen.  (2020).  statistik bidang kajian tahun akhir pelajar prasiswazah forensik (2014, 2016-2019).  - .  1. 

lee loong chuen, atiah ayunni abdul ghani.  (2020).  standard operating procedure (sop) fourier transform infrared spectroscopy (ftir).  - .  1-52. 

loong chuen lee, darrelyn christine nestor, nurul syafiqah azizam.  (2020).  a forensic study of ethnicity differences in fingerprint patterns in a malaysian adult population.  - 22nd medical and health research week 2020.  1. 

lee loong chuen.  (2020).  modelling of atr-ftir spectral data using k-nearest neighbors (knn): evaluation of data preprocessing techniques.  - virtual symposium on sciences 2020.  1-10. 

lee loong chuen, abdul aziz jemain.  (2020).  the application of topsis in the selection of statistical prediction model: a forensic ink analysis case study.  - the 2020 international conference on decision aid sciences and applications (dasa 20).  1-10. 

md gezani md ghazi, lee loong chuen, raja m. zuha, hukil sino.  (2020).  insights into fatal fire cases in malaysia: causes, type of premises and sources of ignition.  - post-graduate colloquium webinar fsk 2020.  1-7. 

md gezani bin md ghazi, lee loong chuen, raja m. zuha, hukil sino.  (2020).  trend of fatal fire cases involving structural building for the period of 2013-2015 in malaysia.  - e malaysia speaking minds competition 2020.  1-2. 

nadirah binti abd hamid, lee loong chuen.  (2020).  evaluation of column-wise manipulations on ultra performance liquid chromatography (uplc) chromatogram to enhance discrimination of five brown soils collected from different locations.  - e malaysia speaking minds competition 2020.  1-2. 

yaishnavee a/p ravi, lee loong chuen.  (2020).  statistical pre processing of uplc chromatographic profiles of brown soils: a comparison of derivative algorithms.  - e malaysia speaking minds competition 2020.  1-2. 

norazwani binti ali, lee loong chuen.  (2020).  assessment of row-wise manipulations on uplc chromatograms of yellowish-brown soils using one way anova lsd test.  - e malaysia speaking minds competition 2020.  1. 

muhamad adib bin ahmad, lee loong chuen.  (2020).  evaluation of data preprocessing method for the forensic differentiation of uplc chromatographic profiles of red soil samples: baseline correction algorithms.  - e malaysia speaking minds competition 2020.  1. 

loong chuen lee, ameeta a/p nai eyan, anas fahmi zakaria, nurul syahiera kharudin, ab aziz ishak, nor azman mohd noor.  (2020).  forensic discrimination of soils using ultra-performance liquid chromatography (uplc) and principal component analysis (pca).  - international conference on earth sciences and environment 2020 (icemen 2020).  1-4. 

lee loong chuen, m. yusuf adam, s. norfaraan a.s., n. izzati b..  (2020).  forensic gender discrimination in malaysian population using machine learning methods.  - 2020 international conference on innovation and intelligence for informatics, computing, and technologies (3ict 2020).  1-10. 

lee lc, darrelyn cn, nurul sa.  (2020).  a forensic study of ethnicity differences in fingerprint patterns in a malaysian adult population.  - minggu penyelidikan perubatan & kesihatan ke-22.  75. 

lee loong chuen.  (2020).  evaluation of sequential pre-processing strategy on spectral data for forensic paper analysis purpose.  - chemical sciences symposium 2020.  1. 

md gezani md ghazi, lee loong chuen, raja m. zuha, hukil sino.  (2020).  insights into fatal fire cases reported from 2013-2015 in malaysia: causes, type of premises and sources of ignition.  - post-graduate colloquium webinar 2020.  1. 

nadirah binti abd hamid, lee loong chuen.  (2020).  evaluation of column-wise manipulations on ultra performance liquid chromatography (uplc) to enhance discrimination of five brown soils collected from different locations.  - e-malaysia speaking minds competition 2020.  1-10. 

norazwani ali, lee loong chuen.  (2020).  assessments of row-wise manipulations on uplc chromatograms of yellowish-brown soils using one way anova lsd test.  - e malaysia speaking minds competition 2020.  1-11. 

loong chuen lee, muhammad yusuf adam, siti norfaraan abd sanih, nur izzati bohari.  (2020).  forensic gender discrimination in malaysian population using machine learning methods.  - 2020 international conference on innovation and intelligence for informatics, computing and technologies (3ict).  1-5. 

loong chuen lee, nur izzati bohari, siti norfaraan sanih.  (2019).  gender discrimination based on number of ridge in malaysian indians population.  - national forensic science symposium 2019.  1. 

loong chuen lee, vasagee elencovan, amidon anan.  (2019).  degradation of latent fingerprints on plastic substrate submerged in water.  - national forensic science symposium 2019.  1. 

loong chuen lee, wan nur syazwani wan mohamad fuad, sharifah shakilah abdullah, raymond kay loke ong.  (2019).  forensic discrimination of malaysian chinese and malays based on morphometric measurement of scalp hair.  - national forensic science symposium (nfss) 2019.  1-13. 

loong chuen lee, wan nur syazwani wan mohamad fuad, sharifah shakilah abdullah and kay loke ong.  (2019).  preliminary study on morphometric analysis of the human scalp hair for discrimination of ethnic malay and ethnic chinese in malaysia.  - egyptian journal of forensic sciences.  1-6. 

lee loong chuen.  (2019).  comparison of stratified and random iterative sampling in evaluation of partial least squares-discriminant analysis model using imbalanced atr-ftir spectra.  - international conference on multidisciplinary research 2019.  1-6. 

lee loong chuen, glenna tan jie yee, lee yong ming, yaishnavee a/p ravi, nadirah binti abd hamid.  (2019).  analisis data terhadap kes ragut di malaysia dari tahun 2015 hingga 2019.  - .  1. 

loong chuen lee, choong-yeun liong, abdul aziz jemain.  (2019).  statistical comparison of decision rules in pls2-da prediction model for classification of blue gel pen inks according to pen brand and pen model.  - chemometrics and intelligent laboratory systems.  . 

lee loong chuen, abdul aziz jemain.  (2019).  predictive modelling of colossal atr-ftir spectral data using pls-da: empirical differences between pls1-da and pls2-da algorithms.  - analyst.  2670-2678. 

lee loong chuen, lee eng leng, sitti mariam nunurung, muhammad abdul hakim, ab aziz ishak.  (2019).  dakwat pen bukti forensik?.  - dewan kosmik.  8-11. 

lee loong chuen, liong choong yeun.  (2019).  developing statistical framework for atr-ftir spectra modeling towards establishment of ink database management system for forensic science application in malaysia: variable reduction aspects..  - .  1-6. 

loong chuen lee, atiah ayunni abdul ghani, ab. aziz ishak, balkhis bashuri, muhamad hilmi baba, norwahida zamani.  (2019).  perhubungan di antara kemudahan makmal dengan prestasi projek penyelidikan di kalangan pelajar prasiswazah sains forensik univerisiti kebangsaan malaysia (ukm).  - seminar kebangsaan pendidikan negara ke-6.  1-8. 

loong chuen lee, choong-yeun liong, abdul aziz jemain.  (2018).  iterative random vs. kennard-stone sampling for ir spectrum-based classification task using pls2-da.  - aip conference proceedings.  . 

loong chuen lee.  (2018).  exploratory study of inter-pen model variations of blue gel pen inks using atr-ftir spectra and multivariate statistical techniques.  - forensic science seminar (fss) 2018.  . 

loong chuen lee, choong-yeun liong and abdul aziz jemain.  (2018).  partial least squares-discriminant analysis (pls-da) for classification of high-dimensional (hd) data: a review of contemporary practice strategies and knowledge gaps.  - analyst.  . 

loong chuen lee, nur izzati bohari, siti norfaraan sanih.  (2018).  gender discrimination based on ridge density in malaysian chinese population.  - forensic science seminar (fss) 2018.  . 

loong chuen lee, amidon anan, vasagee elencovan.  (2018).  degradation of latent fingerprints on glass substrate submerged in water.  - forensic science seminar (fss) 2018.  . 

loong chuen lee, choong-yeun liong, abdul aziz jemain.  (2018).  validity of the best practice in splitting data for hold-out validation strategy as performed on the ink strokes in the context of forensic science.  - microchemical journal.  . 

loong chuen lee, choong-yeun liong, abdul aziz jemain.  (2018).  effects of data pre-processing methods on classification of atr-ftir spectra of pen inks using partial least squares-discriminant analysis (pls-da).  - chemometrics and intelligent laboratory systems.  . 

loong chuen lee, choong-yeun liong, and abdul aziz jemain.  (2017).  q-mode versus r-mode principal component analysis for linear discriminant analysis (lda).  - the 3rd ism international statistical conference 2016 (ism-iii), aip conference proceedings.  1-6. 

loong chuen lee, choong-yeun liong, abdul aziz jemain.  (2017).  the effects of column-wise manipulations on accuracy of classical classifiers with high-dimensional spectral data.  - the 4th international conference on mathematical sciences, aip conference proceeding.  1-6. 

lee, l. c., liong, c-y., khairul, o., jemain, a. a..  (2017).  effects of baseline correction algorithms on forensic classification of paper based on atr-ftir spectrum and principal component analysis (pca).  - pertanika science and technology.  767-774. 

lee loong chuen, liong choong-yeun, abdul aziz jemain.  (2017).  discrimination of pen inks differed at tip sizes using atr-ftir spectroscopy and statistical techniques.  - national forensic science symposium (nfss) 2017.  . 

lee loong chuen, liong choong-yeun, abdul aziz jemain.  (2017).  iterative random vs. kennard-stone sampling for ir spectrum-based classification task using pls2-da.  - the 17th postgraduate colloquium 2017.  . 

lee loong chuen, liong choong-yeun, abdul aziz jemain.  (2017).  an empirical assessment of n-fold cv for pls-da modeling.  - seminar kebangsaan institut statistik malaysia ke-11 (skism-xi).  . 

loong chuen lee, choong-yeun liong, abdul aziz jemain.  (2017).  a contemporary review on data preprocessing (dp) practice strategy in atr-ftir spectrum.  - chemometrics and intelligent laboratory systems.  64-75. 

loong chuen lee, choong-yeun liong, abdul aziz jemain.  (2016).  applying ftir spectroscopy & som for forensic classification of white-copy papers.  - the 3rd international multi-conference on artificial intelligence technology (m-cait 2016).  . 

loong chuen lee, choong-yeun liong, abdul aziz jemain.  (2016).  the effects of column-wise manipulations on accuracy of classical classifiers with high-dimensional spectral data.  - the 4th international conference on mathematical sciences (icms4).  . 

loong chuen lee, choong-yeun liong, abdul aziz jemain.  (2016).  correspondence regarding the article "discrimination of various paper types using diffuse reflectance ultraviolet-visible-near-infrared spectroscopy: [appl.spectrosc. 2015.69(6): 714-720].  - applied spectroscopy.  1598-1601. 

loong-chuen lee, choong-yeun liong, and abdul aziz jemain.  (2016).  q-mode versus r-mode principal component analysis for linear discriminant analysis (lda).  - the 3rd ism international statistical conference 2016 (ism-iii 2016).  . 

loong-chuen lee, choong-yeun liong, khairul osman, and abdul aziz jemain.  (2016).  forensic differentiation of paper by atr-ftir spectroscopy technique and partial least squares-discriminant analysis (pls-da).  - aip conference proceedings / johor bahru, malaysia.  1-7. 

seri mirianti ishar, jeyaganesan pillay a/l balaraman, muhammad jefri mohd yusof, khairul osman, lee loong chuen.  (2016).  screening of three different alleles of mtdna (g709a, g3496t, a3537g) in subpopulation of ukm students.  - malaysian journal of medical and biological research.  37-40. 

loong-chuen lee, choong-yeun liong, khairul osman, and abdul aziz jemain.  (2016).  comparison of several variants of principal component analysis (pca) on forensic analysis of paper based on ir spectrum.  - aip conference proceedings / johor bahru, malaysia.  1-7. 

loong chuen lee, choong-yeun liong, abdul aziz jemain.  (2016).  applying fourier-transform infrared spectroscopy and self-organizing maps for forensic classification of white-copy papers.  - international journal on advanced science, engineering and information technology.  1033-1039. 

loong-chuen lee, choong-yeun liong, khairul osman, and abdul aziz jemain.  (2016).  effects of scatter-correction pre-processing methods and spectral derivative algorithms on forensic classification of paper.  - aip conference proceedings / johor bahru, malaysia.  1-9. 

choong-yeun liong, loong-chuen lee, khairul osman, and abdul aziz jemain.  (2016).  genetic algorithms for wavenumber selection in forensic differentiation of paper by linear discriminant analysis.  - aip conference proceedings / johor bahru, malaysia.  1-7. 

loong chuen lee*, muhammad ismail ab samad, and mohamad azlan mohd ismail.  (2016).  nondestructive classification and identification of ballpoint pen inks by raman spectroscopy for forensic document examinations.  - journal of analytical chemistry.  723-729. 

loong chuen lee, seow lay ying, wan nur syazwani wan mohamad fuad, ab aziz ishak, khairul osman.  (2016).  fast and simple forensic red pen ink analysis using ultra-performance liquid chromatography (uplc).  - malaysian journal of analytical sciences,.  224-230. 

loong chuen lee, muhammad yusuf adam.  (2015).  determination of gender based on fingerprints: forensic applications.  - impact : medical & health edition.  . 

loong-chuen lee, intan shafiqa binti md yunus, karldiv trvin singh shandu, lee eng leng, muhammad abdul hakim bin mohd daud, mohamad azlan bin mohd ismail, muhammad hafizuddin bin abdul rahman..et al..  (2015).  ballpoint pen inks : analysis for forensic applications.  - impact : medical & health edition.  . 

choong yeun liong, long chuen lee, khairul osman, abdul aziz jemain.  (2015).  al-khwarizmi genetik untuk pemilihan nombor gelombang dalam pembezaan forensik kertas dengan analisis diskriminan linear.  - siumposium kebangsaan sains matematik ke-23.  . 

loong chuen lee, chong yuen liong, khairul osman, abdul aziz jemain.  (2015).  kesan kaedah pra-pemprosesan pembetulan-serakan dan al-khwarizmi terbitan spektrum ke atas pengelasan forensik kertas.  - simposium kebangsaan sains matematik malaysia ke-23.  . 

lee long chuen, liong choong yuen, khairul osman, abdul aziz jemain.  (2015).  perbandingan beberapa varian analisis komponen utama (pca) ke atas analisis forensik terhadap kertas berdasarkan spektrum ir.  - simposium kebangsaan sains matematik malaysia ke-23.  . 

loong chuen lee, intan shafiqa md yunus, wan nur syazwani wan mohamad fuad, ab aziz ishak, khairul osman.  (2015).  statistical discrimination of black ballpoint pen inks using ultra-performance liquid chromatography with principal component analysis.  - journal of analytical chemistry.  374-377. 

long chuen lee, choong yuen liong, khairul osman, abdul aziz jemain.  (2015).  pembezaan forensik kertas menggunakan teknik spektroskopi atr-ftir dan kuasa dua terkecil separa-analisis diskriminan (pls-da).  - simposium kebangsaan sains matematik malaysia ke-23.  . 

loong chuen lee, karldiv tarvin singh shandu, nor syahirah mohamad razi, ab aziz ishak, khairul osman.  (2015).  forensic analysis of blue ballpoint pen inks using ultraviolet-visible spectrometer and ultra-performance liquid chromatograph.  - malaysian journal of analytical sciences.  397 - 401. 

muhammad yusuf adam, wan nur syazwani wan mohamad fuad, lee long chuen.  (2015).  a study of sex differences from fingerprint ridge density in the malay population of the peninsular malaysia.  - national forensic science symposium (nfss) 2015 : advancing forensic sciences.  . 

lc lee, cy liong, khairul osman, abdul aziz jemain.  (2015).  effects of preprocessing techniques in studying the variability of paper with ftir-atr spectroscopy and pca.  - national forensic science symposium (nfss) 2015 :.  . 

lee long chuen, liong choong yuen, khairul osman, abdul aziz jemain.  (2015).  effects of baseline correction algorithms on forensic classification of paper based on atr-ftir spectrum and pca.  - the 2nd international conference on statistics in science, business and engineering 2015 : empowering data analytics with mathematics, statistics and actuarial science.  . 

lee long chuen, liong choong yuen, khairul osman, abdul aziz jemain.  (2015).  mini review: forensic paper analysis.  - 7th asian forensic sciences network : annual meeting & symposium 2015.  . 

lee loong chuen, liong choong yuen, khairul osman, abdul aziz jemain.  (2015).  forensic classification of white paper based on atr-ftir spectrum and multivariate statistical technique.  - 7th asian forensic science network annual meeting & symposium 2015.  . 

loong chuen lee, eng leng lee, ab aziz ishak.  (2014).  feasibility of high performance thin layer chromatography for the forensic analysis of red ballpoint pen inks.  - problems of forensic sciences.  14-22. 

loong chuen lee.  (2014).  investigating between-model variation of the papermate® pen using infrared spectrum and multivariate statistical techniques.  - forensic science journal.  15-22. 

loong chuen lee, muhammad abdul hakim, ab. aziz ishak.  (2014).  the analysis of dyes in black ballpoint pen inks using high performance thin layer chromatography.  - malaysian journal of forensic sciences.  22-26. 

loong chuen lee, sitti mariam nunurung, ab aziz ishak.  (2014).  forensic analysis of blue ballpoint pen inks on questioned documents by high performance thin layer chromatography technique (hptlc).  - malaysian journal of analytical sciences.  226-233. 

loong chuen lee, abdul aziz jemainemain.  (2013).  investigating within-group variations of black ballpoint pen inks based on data obtained by micro-attenuated total reflectance / fourier transform infrared spectroscopy.  - problems of forensic sciences.  96:689-701. 

loong chuen lee, abdul aziz jemain.  (2013).  a study to investigate the feasibility of micro-attenuated total reflectance fourier transform infrared spectroscopy for nondestructive forensic analysis of writing inks in questioned documents.  - the 11th indo pacific association of law, medicine and science congress 2013.  . 

eng leng lee, ab aziz ishak, loong chuen lee.  (2013).  forensic classification and discrimination of red ballpoint pen inks using high performance thin layer chromatography.  - 11th indo pacific association of law, medicine and science congress 2013.  . 

loong chuen lee, mohamed rozali othman, hiang pua, ab aziz ishak, seri mirianti ishar.  (2012).  classification and identification of black ballpoint pen inks based on multivariate analysis and infrared spectra.  - problems of forensic sciences.  92(XCII):253-264. 

l.c. lee, mohamed rozali othman, h. pua.  (2012).  systematic assessment of attenuated total reflectance-fourier transforms infrared spectroscopy coupled with multivariate analysis for forensic analysis of black ballpoint pen inks.  - the malaysian journal of analytical sciences.  16(3):262-272. 

l. c. lee , mohamed rozali othman, h. pua and abdul aziz ishak.  (2012).  application of multivariate chemometry for discrimination of black ballpoint pen inks based on the ir spectrum.  - malaysian journal of forensic sciences.  3(1): 5-10. 

lee loong chuen, mohamed rozali othman, and pua hiang.  (2011).  application of infrared spectrum and multivariate analysis in classification and discrimination of black ballpoint pen inks.  - 2nd international forensic science symposium.  . 

puan hiang, siti zaimah zainal, khairul osman, lee loong chuen.  (2011).  forensic discrimination of different brands of blue ballpoint pen inks using hplc.  - 2nd international forensic science symposium.  . 

lee loong chuen, mohamed rozali othman, pua hiang.  (2011).  diskriminasi dakwat hitam pen mata bulat berdasarkan analisis multivarians pada spektrum inframerah.  - kolokium siswazah fst ukm ke-11.  . 

lee loong chuen.  (2008).  hypervariable segment-i (hvs-i) sequence analysis of chinese population of peninsular malaysia.  - sihat 2008, 7th national symposium on health sciences.  .