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This book constitutes the refereed proceedings of the 27th Canadian Conference on Artificial Intelligence, Canadian AI 2014, held in Montréal, QC, Canada, in May 2014. The 22 regular papers and 18 short papers presented together with 3 invited talks were carefully reviewed and selected from 94 submissions. The papers cover a variety of topics within AI, such as: agent systems; AI applications; automated reasoning; bioinformatics and BioNLP; case-based reasoning; cognitive models; constraint satisfaction; data mining; E-commerce; evolutionary computation; games; information retrieval; knowledge representation; machine learning; multi-media processing; natural language processing; neural nets; planning; privacy-preserving data mining; robotics; search; smart graphics; uncertainty; user modeling; web applications.

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Agent systems.- AI applications.- Automated reasoning.- Bioinformatics and BioNLP.- Case-based reasoning.- Cognitive models.- Constraint satisfaction.- Data mining.- E-commerce.- Evolutionary computation.- Games.- Information retrieval.- Knowledge representation.- Machine learning.- Multi-media processing.- Natural language processing.- Neural nets.- Planning.- Privacy-preserving data mining.- Robotics.- Search.- Smart graphics.- Uncertainty.- User modeling.- Web applications.

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