Victoria L. Rubin|Tatiana Lukoianova
Truth and deception at the rhetorical structure level
Western University|Fisher College
paper furthers development methods distinguish truth deception textual data use rhetorical structure theory rst analytic framework identify systematic differences deceptive truthful stories terms coherence structure sample 36 elicited personal stories selfranked truthful deceptive manually analyzed assigning rst discourse relations among storys constituent parts vector space model vsm assesses storys position multidimensional rst space respect distance truthful deceptive centers measures storys level deception truthfulness ten human judges evaluate independently whether story deceptive assign confidence levels 360 evaluations total producing measures expected human ability recognize deception robustness check test sample 18 truthful stories 180 additional evaluations used determine reliability rstvsm method determining deception contribution demonstration discourse structure analysis significant method automated deception detection effective complement lexicosemantic analysis potential developing novel discoursebased tools alert information users potential deception computermediated texts