?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Monotonicity+Analysis+for+Constructing+Qualitative+Models&rft.creator=Yan%2C+Yuhong&rft.creator=Lemire%2C+Daniel&rft.creator=Brooks%2C+Martin&rft.subject=Artificial+Intelligence&rft.description=Qualitative+models+are+more+suitable+than+classical+quantitative+models+in+many+tasks+like+Model-based+Diagnosis+(MBD)%2C+explaining+system+behavior%2C+and+designing+novel+devices+from+first+principles.+Monotonicity+is+an+important+feature+to+leverage+when+constructing+qualitative+models.+Detecting+monotone+pieces+robustly+and+efficiently+from+sensor+or+simulation+data+remains+an+open+problem.+This+paper+introduces+an+approach+based+on+scale-dependent+monotonicity%3A+the+notion+that+monotonicity+can+be+defined+relative+to+a+scale.+Real-valued+functions+defined+on+a+finite+set+of+reals+e.g.+the+sensor+data+the+simulation+results%2C+can+be+partitioned+into+quasi-monotone+segments%2C+i.e.+segments+monotone+with+respect+to+nonzero+scale.+We+can+identify+the+extrema+of+the+quasi-monotone+segments.+This+paper+then+uses+this+method+to+abstract+qualitative+models+from+simulation+models+for+the+purpose+of+diagnosis.+It+shows+that+using+monotone+analysis%2C+the+abstracted+qualitative+model+is+not+only+sound%2C+but+also+parsimonious+because+it+generates+few+landmarks.&rft.date=2004&rft.type=Conference+Paper&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F4494%2F1%2FMBR.pdf&rft.identifier=++Yan%2C+Yuhong+and+Lemire%2C+Daniel+and+Brooks%2C+Martin++(2004)+Monotonicity+Analysis+for+Constructing+Qualitative+Models.++%5BConference+Paper%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F4494%2F<script src='//archive-bar.soton.ac.uk/archive-bar.js'></script>