This volume contains the papers presented at the 23rd Canadian Conference on Arti?cial Intelligence (AI 2010). The conference was held in Ottawa, Ontario, fromMay31toJune2,2010,andwascollocatedwiththe36thGraphicsInterface Conference(GI2010),andthe7thCanadianConferenceonComputerandRobot Vision (CRV 2010). The Program Committee received 90 submissions for the main conference, AI2010,fromacrossCanadaandaroundtheworld.Eachsubmissionwasreviewed byuptofourreviewers.Forthe?nalconferenceprogramandforinclusioninthese proceedings, 22 regular papers, with allocation of 12 pages each, were selected. Additionally,26 shortpapers,with allocationof 4 pageseach,wereaccepted. The papers from the Graduate Student Symposium are also included in the proceedings:sixoral(fourpages)andsixposter(twopages)presentationpapers. The conference programfeatured three keynote presentations by Dekang Lin (Google Inc.), Guy Lapalme (Universit edeMontr eal), and Evangelos Milios (Dalhousie University). The one-page abstracts of their talks are also included in the proceedings. Two pre-conference workshops, each with their own proceedings, were held on May 30, 2010. The Workshop on Intelligent Methods for Protecting Privacy and Con?dentiality in Data was organized by Khaled El Emam and Marina Sokolova. The workshop on Teaching AI in Computing and Information Te- nology (AI-CIT 2010) was organized by Danny Silver, Leila Kosseim, and Sajid Hussain. This conference wouldnot havebeen possible without the hardworkofmany people.WewouldliketothankallProgramCommitteemembersandexternal- viewers for their e?ort in providing high-quality reviews in a timely manner. We thank all the authors of submitted papers for submitting their work,and the - thors of selected papers for their collaboration in preparation of the ?nal copy. ManythankstoEbrahimBagheriandMarinaSokolovafororganizingtheGra- ateStudentSymposium,andchairingtheProgramCommitteeofthesymposium. We are in debt to Andrei Voronkov for developing the EasyChair conference managementsystemandmakingitfreelyavailabletotheacademicworld.Itisan amazinglyelegantand functionalWeb-basedsystem,whichsavedus muchtime.

Inhalt
Invited Talks.- Acquisition of 'Deep' Knowledge from Shallow Corpus Statistics.- University and Industry Partnership in NLP, Is It Worth the Trouble?.- Corpus-Based Term Relatedness Graphs in Tag Recommendation.- Regular Papers.- Improving Multiclass Text Classification with Error-Correcting Output Coding and Sub-class Partitions.- Offensive Language Detection Using Multi-level Classification.- A Three-Way Decision Approach to Email Spam Filtering.- Hierarchical Approach to Emotion Recognition and Classification in Texts.- Supervised Machine Learning for Summarizing Legal Documents.- Toward a Gold Standard for Extractive Text Summarization.- MeSH Represented MEDLINE Query Results.- Argumentation-Based Reasoning with Inconsistent Knowledge Bases.- Finding a Single, All, or the Most Probable Solution to a Finite or Non-finite Interval Algebra Network.- A Dynamic Pricing Approach in E-Commerce Based on Multiple Purchase Attributes.- The IMAP Hybrid Method for Learning Gaussian Bayes Nets.- Feature Subset-Wise Mixture Model-Based Clustering via Local Search Algorithm.- Cascading Customized Naïve Bayes Couple.- Semi-supervised Probability Propagation on Instance-Attribute Graphs.- Offline Recognition of Handwritten Numeral Characters with Polynomial Neural Networks Using Topological Features.- Automatic Parameter Settings for the PROAFTN Classifier Using Hybrid Particle Swarm Optimization.- The Ant Search Algorithm: An Ant Colony Optimization Algorithm for the Optimal Searcher Path Problem with Visibility.- Automatic Discovery of Network Applications: A Hybrid Approach.- Overlap versus Imbalance.- Robustness of Classifiers to Changing Environments.- Belief Revision of Product-Based Causal Possibilistic Networks.- A Survey on Statistical Relational Learning.- ShortPapers.- Exploiting Frame Information for Prepositional Phrase Semantic Role Labeling.- Phrase-Based Statistical Machine Translation for a Low-Density Language Pair.- Coordination of Subject Markers in Arabic and Typed Categorial Logic.- Word Reordering Approaches for Bangla-English Statistical Machine Translation.- Comparison of Feature Selection Methods for Sentiment Analysis.- Unsupervised Extraction of Appraisal Expressions.- Automatic Text Segmentation for Movie Subtitles.- Using Classifier Performance Visualization to Improve Collective Ranking Techniques for Biomedical Abstracts Classification.- Annotation Concept Synthesis and Enrichment Analysis.- Using Learned PSR Model for Planning under Uncertainty.- Notes on Generating Satisfiable SAT Instances Using Random Subgraph Isomorphism.- A Model for Reasoning about Interaction with Users in Dynamic, Time Critical Environments for the Application of Hospital Decision Making.- A Novel Approach for Recommending Ranked User-Generated Reviews.- A Semantic Model for Social Recommender Systems.- Winner Determination Based on Preference Elicitation Methods.- A Domain Ontology Model for Mould Design Automation.- Dynamic Reasoning for Description Logic Terminologies.- Deep Distributed News: Ontologies to the Rescue of Journalism.- Improving Bayesian Learning Using Public Knowledge.- Potential AI Strategies to Solve the Commons Game: A Position Paper.- Score Calibration for Optimal Biometric Identification.- Detection of Mine-Like Objects Using Restricted Boltzmann Machines.- Data Mining Techniques for Proactive Fault Diagnostics of Electronic Gaming Machines.- Multivariate Decision Trees Using Different Splitting Attribute Subsets for Large Datasets.- Using Non Boolean Similarity Functions for Frequent Similar Pattern Mining.- Evaluation of Rare Event Detection.- CAI-GS 2010 Graduate Student Symposium.- On Multi-robot Area Coverage.- Exploiting Rhetorical Relations in Blog Summarization.- Peer-Based Intelligent Tutoring Systems: A Corpus-Oriented Approach.- On Sketch Based Anonymization That Satisfies Differential Privacy Model.- Predicting Optimal Constraint Satisfaction Methods.- A Computer Approach for Face Aging Problems.- Automatically Expanding the Lexicon of Roget's Thesaurus.- Privacy Preserving Publication of Longitudinal Health Data.- Reasoning about Interaction for Hospital Decision Making.- Semantic Annotation Using Ontology and Bayesian Networks.- Optimizing Advisor Network Size in a Personalized Trust-Modelling Framework for Multi-agent Systems.- An Adaptive Trust and Reputation System for Open Dynamic Environment.