?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Trip+purpose+identification+using+pairwise+constraints+based+semi-supervised+clustering&rft.creator=Sari+Aslam%2C+N&rft.creator=Cheng%2C+T&rft.creator=Cheshire%2C+J&rft.creator=Zhang%2C+Y&rft.description=Clustering+of+smart+card+data+captured+by+automated+fare+collection+(AFC)+systems+has+traditionally%0D%0Abeen+viewed+as+an+unsupervised+method.+However%2Csome+additional+information+about+human+behaviour%0D%0Ais+available+in+addition+to+the+smart+card+data+points+that+can+facilitate+better+partitioning+of+the+data.+In%0D%0Athis+paper%2C+such+prior+knowledge+is+translated+into+pairwise+constraints+and+used+with+the+COPKMEANS+clustering+algorithm+to+identify+user+activities.+The+effectiveness+of+the+method+was%0D%0Aevaluated+using+performance+evaluation+measures+by+comparison+of+the+results+with+the+ground+truth.%0D%0AThe+results+demonstrate+that+pairwise+constraints+significantly+enhance+the+accuracy+of+the+clusters.&rft.subject=Trip+purposes%2C+smart+card+data%2C+COP-KMEANS%2C+semi-supervised+clustering&rft.publisher=GISRUK&rft.date=2019&rft.type=Proceedings+paper&rft.publisher=Proceedings+of+GISRUK+2019&rft.language=eng&rft.source=+++++In%3A++Proceedings+of+the+27th+GISRUK+conference+2019.++++GISRUK+(2019)+++++&rft.format=text&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F10127905%2F1%2FNSA-GISRUK2019-Trip%2520Purpose%2520identification%2520using%2520constrain%2520based%2520semi-supervised%2520clustering.pdf&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F10127905%2F&rft.rights=open