{"id":"https://openalex.org/W2239223391","doi":null,"title":"River water quality modeling using combined Principle Component Analysis(PCA) and Multiple Linear Regressions (MLR) : a case study at Klang River, Malaysia.","display_name":"River water quality modeling using combined Principle Component Analysis(PCA) and Multiple Linear Regressions (MLR) : a case study at Klang River, Malaysia.","publication_year":2011,"publication_date":"2011-01-01","ids":{"openalex":"https://openalex.org/W2239223391","mag":"2239223391"},"language":"en","primary_location":{"id":"pmh:oai:psasir.upm.edu.my:23397","doi":null,"is_oa":true,"landing_page_url":"http://psasir.upm.edu.my/id/eprint/23397/1/23397.pdf","pdf_url":"http://psasir.upm.edu.my/id/eprint/23397/1/23397.pdf","source":{"id":"https://openalex.org/S4377196260","display_name":"Universiti Putra Malaysia Institutional Repository (Universiti Putra Malaysia)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I130343225","host_organization_name":"Universiti Putra Malaysia","host_organization_lineage":["https://openalex.org/I130343225"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"http://psasir.upm.edu.my/id/eprint/23397/1/23397.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5112021541","display_name":"Mohd Fahmi Mohd Nasir","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Mohd Fahmi Mohd Nasir","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5030179211","display_name":"Mohd Saiful Samsudin","orcid":"https://orcid.org/0000-0002-4777-1051","observed_orcids":["https://orcid.org/0000-0002-4777-1051"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Mohd Saiful Samsudin","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0002-4777-1051","affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5018284621","display_name":"Isahak Mohamad","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Isahak Mohamad","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5079566709","display_name":"Mohammad Roshide Amir Awaluddin","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Mohammad Roshide Amir Awaluddin","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5086596727","display_name":"Muhd Ariffin Mansor","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Muhd Ariffin Mansor","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5086810541","display_name":"Hafizan Juahir","orcid":"https://orcid.org/0000-0003-3763-4309","observed_orcids":["https://orcid.org/0000-0003-3763-4309"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Hafizan Juahir","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0003-3763-4309","affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5110501349","display_name":"Norlafifah Ramli","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Norlafifah Ramli","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.5966,"has_fulltext":false,"cited_by_count":44,"citation_normalized_percentile":{"value":0.72662134,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":98},"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11634","display_name":"Water Quality and Pollution Assessment","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2312","display_name":"Water Science and Technology"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11634","display_name":"Water Quality and Pollution Assessment","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2312","display_name":"Water Science and Technology"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12773","display_name":"Water Quality and Resources Studies","score":0.0,"subfield":{"id":"https://openalex.org/subfields/2312","display_name":"Water Science and Technology"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T14249","display_name":"Water Quality Monitoring and Analysis","score":0.0,"subfield":{"id":"https://openalex.org/subfields/2311","display_name":"Waste Management and Disposal"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/river-water-quality","display_name":"river water quality","score":0.9800000190734863},{"id":"https://openalex.org/keywords/klang-river","display_name":"Klang River","score":0.9629999995231628},{"id":"https://openalex.org/keywords/water-quality-index","display_name":"water quality index","score":0.8289999961853027},{"id":"https://openalex.org/keywords/source-apportionment","display_name":"source apportionment","score":0.843999981880188},{"id":"https://openalex.org/keywords/receptor-models","display_name":"receptor models","score":0.6890000104904175},{"id":"https://openalex.org/keywords/industrial-wastewater","display_name":"industrial wastewater","score":0.7940000295639038},{"id":"https://openalex.org/keywords/fecal-waste","display_name":"fecal waste","score":0.6190000176429749},{"id":"https://openalex.org/keywords/detergent-pollution","display_name":"detergent pollution","score":0.546999990940094},{"id":"https://openalex.org/keywords/fertilizer-runoff","display_name":"fertilizer runoff","score":0.6330000162124634},{"id":"https://openalex.org/keywords/surface-runoff","display_name":"surface runoff","score":0.7039999961853027},{"id":"https://openalex.org/keywords/soil-erosion","display_name":"soil erosion","score":0.753000020980835},{"id":"https://openalex.org/keywords/water-quality-prediction","display_name":"water quality prediction","score":0.6800000071525574},{"id":"https://openalex.org/keywords/multivariate-analysis","display_name":"multivariate analysis","score":0.5899999737739563}],"concepts":[{"id":"https://openalex.org/C2780797713","wikidata":"https://www.wikidata.org/wiki/Q625376","display_name":"Water quality","level":2,"score":0.6060146689414978},{"id":"https://openalex.org/C521259446","wikidata":"https://www.wikidata.org/wiki/Q58734","display_name":"Pollution","level":2,"score":0.5499656796455383},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.5139366984367371},{"id":"https://openalex.org/C161584116","wikidata":"https://www.wikidata.org/wiki/Q1952580","display_name":"Multivariate statistics","level":2,"score":0.5139074325561523},{"id":"https://openalex.org/C189285262","wikidata":"https://www.wikidata.org/wiki/Q1332350","display_name":"Multicollinearity","level":3,"score":0.4989137649536133},{"id":"https://openalex.org/C50477045","wikidata":"https://www.wikidata.org/wiki/Q1444790","display_name":"Surface runoff","level":2,"score":0.468340128660202},{"id":"https://openalex.org/C106192678","wikidata":"https://www.wikidata.org/wiki/Q1419761","display_name":"Collinearity","level":2,"score":0.46247756481170654},{"id":"https://openalex.org/C48921125","wikidata":"https://www.wikidata.org/wiki/Q10861030","display_name":"Linear regression","level":2,"score":0.43193280696868896},{"id":"https://openalex.org/C76886044","wikidata":"https://www.wikidata.org/wiki/Q2883300","display_name":"Hydrology (agriculture)","level":2,"score":0.42260611057281494},{"id":"https://openalex.org/C140779682","wikidata":"https://www.wikidata.org/wiki/Q210868","display_name":"Sampling (signal processing)","level":3,"score":0.4132015109062195},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.4041881859302521},{"id":"https://openalex.org/C87717796","wikidata":"https://www.wikidata.org/wiki/Q146326","display_name":"Environmental engineering","level":1,"score":0.3902491331100464},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.2917482256889343},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.1992061734199524},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.17317649722099304},{"id":"https://openalex.org/C106131492","wikidata":"https://www.wikidata.org/wiki/Q3072260","display_name":"Filter (signal processing)","level":2,"score":0.0},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C187320778","wikidata":"https://www.wikidata.org/wiki/Q1349130","display_name":"Geotechnical engineering","level":1,"score":0.0},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:psasir.upm.edu.my:23397","doi":null,"is_oa":true,"landing_page_url":"http://psasir.upm.edu.my/id/eprint/23397/1/23397.pdf","pdf_url":"http://psasir.upm.edu.my/id/eprint/23397/1/23397.pdf","source":{"id":"https://openalex.org/S4377196260","display_name":"Universiti Putra Malaysia Institutional Repository (Universiti Putra Malaysia)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I130343225","host_organization_name":"Universiti Putra Malaysia","host_organization_lineage":["https://openalex.org/I130343225"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Article"},{"id":"mag:2239223391","doi":null,"is_oa":false,"landing_page_url":"http://psasir.upm.edu.my/id/eprint/23397/","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null}],"best_oa_location":{"id":"pmh:oai:psasir.upm.edu.my:23397","doi":null,"is_oa":true,"landing_page_url":"http://psasir.upm.edu.my/id/eprint/23397/1/23397.pdf","pdf_url":"http://psasir.upm.edu.my/id/eprint/23397/1/23397.pdf","source":{"id":"https://openalex.org/S4377196260","display_name":"Universiti Putra Malaysia Institutional Repository (Universiti Putra Malaysia)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I130343225","host_organization_name":"Universiti Putra Malaysia","host_organization_lineage":["https://openalex.org/I130343225"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Article"},"sustainable_development_goals":[{"score":1.0,"display_name":"Clean water and sanitation","id":"https://metadata.un.org/sdg/6"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":true,"grobid_xml":false},"content_urls":{"pdf":"https://content.openalex.org/works/W2239223391.pdf"},"referenced_works_count":7,"referenced_works":["https://openalex.org/W1975983855","https://openalex.org/W1985493764","https://openalex.org/W2019028818","https://openalex.org/W2058583777","https://openalex.org/W2082210704","https://openalex.org/W2086321501","https://openalex.org/W2165229670"],"related_works":["https://openalex.org/W113588381","https://openalex.org/W3183416065","https://openalex.org/W1480092597","https://openalex.org/W4401048402","https://openalex.org/W1795199975","https://openalex.org/W4323361991","https://openalex.org/W7099508088","https://openalex.org/W4313583517","https://openalex.org/W4292440546","https://openalex.org/W2420056736"],"abstract_inverted_index":{"A":[0,31],"collective":[1],"set":[2],"of":[3,25,34,103,129,141,151,183,207],"data":[4,77,110,166],"over":[5],"five":[6,188],"years":[7],"(2003":[8],"to":[9,19,58,122,136,214,225,236],"2007)":[10],"in":[11,17,134,171,192,212],"Klang":[12,124,144],"River,":[13],"Selangor":[14],"were":[15,39,72],"studied":[16],"attempt":[18],"assess":[20],"and":[21,49,60,98,164,176,200,209,222,230],"determine":[22],"the":[23,28,62,76,104,109,118,123,127,138,149,156,177,187,193,198,219,227],"contributions":[24],"sources":[26,140],"affecting":[27],"water":[29,47,66,220],"quality.":[30],"precise":[32],"technique":[33],"multiple":[35],"linear":[36],"regressions":[37],"(MLR)":[38],"prepare":[40],"as":[41,81,117,153],"an":[42],"advance":[43],"tool":[44],"for":[45,75,107,232],"surface":[46,86],"modeling":[48],"forecasting.":[50],"Likewise,":[51],"principle":[52,70],"component":[53],"analysis":[54,206],"(PCA)":[55],"was":[56,132],"used":[57,191,234],"simplify":[59],"understand":[61],"complex":[63,210],"relationship":[64],"among":[65],"quality":[67,221],"parameters.":[68],"Nine":[69],"components":[71],"found":[73],"responsible":[74],"structure":[78],"provisionally":[79],"named":[80],"soil":[82],"erosion,":[83],"anthropogenic":[84],"input,":[85],"runoff,":[87],"fecal":[88],"waste,":[89,93],"detergent,":[90],"urban":[91,113],"domestic":[92,114],"industrial":[94],"effluent,":[95],"fertilizer":[96],"waste":[97,100],"residential":[99],"explains":[101],"72%":[102],"total":[105],"variance":[106],"all":[108],"sets.":[111],"Meanwhile,":[112],"pollution":[115,120],"accounted":[116],"highest":[119],"contributor":[121],"River.":[125,145],"Thus,":[126],"advancement":[128],"receptor":[130],"model":[131,158,178],"applied":[133],"order":[135,213],"identify":[137],"major":[139],"pollutant":[142],"at":[143],"Result":[146],"showed":[147],"that":[148,180],"use":[150],"PCA":[152],"inputs":[154],"improved":[155,216],"MLR":[157],"prediction":[159],"by":[160,186,203],"reducing":[161],"their":[162],"complexity":[163],"eliminating":[165],"collinearity":[167],"where":[168],"R2":[169],"value":[170],"this":[172],"study":[173],"is":[174],"0.75":[175],"indicates":[179],"75%":[181],"variability":[182],"WQI":[184],"explained":[185],"independent":[189],"variables":[190],"model.":[194],"This":[195],"assessment":[196],"presents":[197],"importance":[199],"advantages":[201],"poses":[202],"multivariate":[204],"statistical":[205],"large":[208],"databases":[211],"get":[215],"information":[217],"about":[218],"then":[223],"helps":[224],"reduce":[226],"sampling":[228],"time":[229],"cost":[231],"reagent":[233],"prior":[235],"analyses.":[237]},"counts_by_year":[{"year":2025,"cited_by_count":3},{"year":2024,"cited_by_count":4},{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":3},{"year":2021,"cited_by_count":5},{"year":2020,"cited_by_count":5},{"year":2019,"cited_by_count":2},{"year":2018,"cited_by_count":4},{"year":2017,"cited_by_count":4},{"year":2016,"cited_by_count":4},{"year":2015,"cited_by_count":5},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":1}],"updated_date":"2026-11-08T12:12:28.789561","created_date":"2016-06-24T00:00:00"}
