?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Reference+Frames+for+Spatial+Inference+in+Text+Understanding&rft.creator=Claus%2C+Berry&rft.creator=Eyferth%2C+Klaus&rft.creator=Gips%2C+Carsten&rft.creator=H%26ouml%3Brnig%2C+Robin&rft.creator=Schmid%2C+Ute&rft.creator=Wiebrock%2C+Sylvia&rft.creator=Wysotzki%2C+Fritz&rft.subject=Cognitive+Psychology&rft.subject=Artificial+Intelligence&rft.subject=Artificial+Intelligence&rft.subject=Psycholinguistics&rft.description=We+present+an+approach+to+spatial+reasoning+that+is+based+on+homogenous+coordinate+systems+and+their+transformations.+In+contrast+to+qualitative+approaches%2C+spatial+relations+are+not+represented+by+symbolic+expressions+only+but+additionally+by+parameters+with+constraints%2C+which+are+subsets+of+real+numbers.+Our+work+is+based+on+the+notion+of+mental+models+in+text+understanding+introduced+in+cognitive+science.+That+is%2C+we+model+the+understanding+of+descriptions+of+spatial+configurations+by+constructing+a+representation+of+the+class+of+situations+that+are+compatible+with+the+description.+Within+our+approach+a+spatial+relation+between+two+objects+is+represented+by+constraining+the+position+of+one+of+the+objects+with+respect+to+the+reference+frame+of+the+other+one.+That+is%2C+inferences+of+spatial+relations+not+given+explicitly+in+a+text+depend+on+the+frame+of+reference+which+is+presumed+by+the+(human+or+computer)+system.+In+this+paper+we+describe+a+general+framework+for+spatial+reasoning+based+on+the+notion+of+mental+models+and+we+present+some+empirical+results+concerning+the+influence+of+the+selected+reference+frame+on+the+inference+process.&rft.publisher=Springer%2C+Berlin&rft.contributor=Freksa%2C+Christian&rft.contributor=Habel%2C+Christopher&rft.contributor=Wender%2C+Karl-Friedrich&rft.date=1998&rft.type=Book+Chapter&rft.type=NonPeerReviewed&rft.format=application%2Fpostscript&rft.identifier=http%3A%2F%2Fcogprints.org%2F485%2F2%2Ftrierpapier-lv.ps&rft.identifier=++Claus%2C+Berry+and+Eyferth%2C+Klaus+and+Gips%2C+Carsten+and+H%26ouml%3Brnig%2C+Robin+and+Schmid%2C+Ute+and+Wiebrock%2C+Sylvia+and+Wysotzki%2C+Fritz++(1998)+Reference+Frames+for+Spatial+Inference+in+Text+Understanding.++%5BBook+Chapter%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F485%2F