?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F107%2F&rft.title=Validation+of+agent-based+models&rft.creator=Challet%2C+Damien&rft.creator=Krause%2C+Andreas&rft.subject=Retail&rft.description=The+automatic+collection+of+customer+transaction+data%2C+through+either+online+shops+or+reward+cards%2C+is+producing+very+large+databases+which+contain+much+information+about+consumer+behaviour.+What+kind+of+information+and+how+exploitable+it+is+are+very+relevant+questions.+Two+approaches+are+being+used.+Either+one+concentrates+on+individual+behaviour+and+tries+to+apply+various+theoretical+frameworks+and+results+of+the+literature+on+discrete+choice%2C+or+one+uses+clustering+algorithms+in+order+to+determine+several+classes+of+customers.+The+very+existence+of+such+categories+is+likely+to+be+the+result+of+social+interactions+and+influences.+The+literature+on+discrete+choice+cannot+easily+be+generalised+to+networked+interactions%2C+which+are+known+to+be+widely+present+in+various+contexts.+Another+approach+is+to+use+toy+models+of+individual+behaviour+and+concentrate+on+global%2C+aggregate+quantities+such+as+market+share+or+demand+fluctuations.+This+raises+the+question+of+how+to+validate+such+kind+of+model%2C+hence+the+request+of+Unilever.+The+latter+should+also+be+understood+with+respect+to+the+contribution+of+ESGI+2004%2C+where+a+very+sophisticated+agent-based+model+of+consumer+behaviour+was+proposed+(but+not+much+studied).&rft.date=2007-04-17&rft.type=Study+Group+Report&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F107%2F1%2FUnilever-ABM-Report.pdf&rft.identifier=++Challet%2C+Damien+and+Krause%2C+Andreas++(2007)+Validation+of+agent-based+models.++%5BStudy+Group+Report%5D+++++