KnowCIT

Knowledge Enhanced Embodied Cognitive Interaction Technology

Term: 2008-03 till 2012-10
Research Area: C 
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KnowCIT

Abstract

In the KnowCIT project we extend the conversational abilities of the conversational agent MAX by equipping him with access to collaboratively constructed knowledge drawn from the online encyclopedia Wikipedia. By means of the crowd-sourced knowledge resource, the agent is able to identify, label, track, and continue the topic of a dialog as the interlocutor of a human dialog partner. This allows him to answer questions, to detect topic changes and to react meaningfully to the challenge of dialogical dynamics.

Research Questions and Methods

In the project we aim to connect two yet unrelated areas of modeling cognitive systems with semantic-web technologies. This relates to distributed cognition as exemplified by rising web technologies – e.g. social ontologies – on the one hand and artificial cognition based on embodied virtual agents – e.g. MAX – on the other hand.

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Outcomes

ALT TEXTA milestone of the KnowCIT project is the implementation of an open topic model that enables the artificial agent to identify and label the topic of a dialog to which he participates as an interlocutor of a human user. By interfacing the conceptual structures of Wikipedia, the project endows MAX with the capability to utilize more than 55,000 different thematic categories for the task of topic labeling. Another milestone of the KnowCIT project is its question-answering component. That is, KnowCIT enables MAX to exploit the document collection of Wikipedia by utilizing propositional information about more than 1.1 million entities for the task of knowledge representation and reasoning. Thereby, the topic model provides the basis to determine the set of topic-related patterns needed for hypothesis generation and answer candidate scoring.  The resultant question-answering component invites human dialog partners to ask natural language questions and to explore the encyclopedic knowledge of Wikipedia just by means of interacting with a charming conversational agent.

Publications

Let's talk topically with artificial agents! Providing agents with humanlike topic awareness in everyday dialog situations

Breuing A, Wachsmuth I (2012)
In: Proceedings of the 4th International Conference on Agents and Artificial Intelligence (ICAART). 2 Portugal: SciTePress: 62–71.
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Conference Proceeding / Paper | Published | Quality Controlled | English
Link: http://pub.uni-bielefeld.de/publication/2423866

Harvesting Wikipedia knowledge to identify topics in ongoing natural language dialogs

Breuing A, Waltinger U, Wachsmuth I (2011)
In: Proceedings of the 2011 IEEE/WIC/ACM International Joint Conference on Web Intelligence and Intelligent Agent Technology (WI-IAT 2011). IEEE: 445–450.
Conference Proceeding / Paper | Published | Quality Controlled | English
Link: http://pub.uni-bielefeld.de/publication/2144354

Interfacing virtual agents with collaborative knowledge: Open domain question answering using Wikipedia-based topic models

Waltinger U, Breuing A, Wachsmuth I (2011)
In: Proceedings of the 22nd International Joint Conference on Artificial Intelligence (IJCAI–11). Walsh T (Ed); Barcelona, Spain: AAAI Press: 1896–1902.
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Conference Proceeding / Paper | Published | Quality Controlled | English
Link: http://pub.uni-bielefeld.de/publication/2144342

Equipping a conversational agent with access to Wikipedia knowledge

Breuing A, Wachsmuth I (2010)
In: Proceedings of the KogWis 2010. Potsdam: Universitätsverlag Potsdam: 89–89.
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Conference Abstract | Published | Quality Controlled | English
Link: http://pub.uni-bielefeld.de/publication/1990986

Interfacing a Conversational Agent with Contextual Knowledge Drawn from Wikipedia

Breuing A (2010)
In: Proceedings of the KogWis 2010. Potsdam: Universitätsverlag Potsdam: 58–59.
Conference Proceeding / Paper | Published | Quality Controlled | English
Link: http://pub.uni-bielefeld.de/publication/1990990

Improving Human-Agent Conversations by Accessing Contextual Knowledge from Wikipedia

Breuing A (2010)
In: Proceedings of the 3rd WI-IAT Doctoral Workshop, in conj. with the 2010 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology. IEEE: 428–431.
Conference Proceeding / Paper | Published | Quality Controlled | English
Link: http://pub.uni-bielefeld.de/publication/1990993

GermanPolarityClues: A Lexical Resource for German Sentiment Analysis

Waltinger U (2010)
In: Proceedings of the Seventh conference on International Language Resources and Evaluation (LREC'10). Nicoletta Calzolari (Conference Chair) BMKC (Ed); Valletta, Malta: European Language Resources Association (ELRA).
Conference Proceeding / Paper | Published | English
Link: http://pub.uni-bielefeld.de/publication/1904061

Sentiment Analysis Reloaded: A Comparative Study On Sentiment Polarity Identification Combining Machine Learning And Subjectivity Features

Waltinger U (2010)
In: Proceedings of the 6th International Conference on Web Information Systems and Technologies (WEBIST '10). Valencia, Spain.
Conference Proceeding / Paper | Published | English
Link: http://pub.uni-bielefeld.de/publication/1904155

Enhancing document modeling by means of open topic models Crossing the frontier of classification schemes in digital libraries by example of the DDC

Mehler A, Waltinger U (2009)
Library Hi Tech 27(4): 520–539.
Journal Article | Published | Quality Controlled | English
Link: http://pub.uni-bielefeld.de/publication/1588836

Social Semantics and Its Evaluation by Means of Semantic Relatedness and Open Topic Models

Waltinger U, Mehler A (2009)
In: Proceedings of the 2009 IEEE/WIC/ACM International Joint Conference on Web Intelligence and Intelligent Agent Technology. 1 Washington, DC, USA: IEEE Computer Society: 42–49.
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Conference Proceeding / Paper | Published | Quality Controlled | English
Link: http://pub.uni-bielefeld.de/publication/1904125

Social Semantics And Its Evaluation By Means of Closed Topic Models: An SVM-Classification Approach Using Semantic Feature Replacement By Topic Generalization

Waltinger U, Mehler A, Gleim R (2009)
In: Proceedings of the GSCL-Conference 2009.
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Conference Proceeding / Paper | Published | Quality Controlled | English
Link: http://pub.uni-bielefeld.de/publication/1904121

From Social Networks To Distributional Properties: A Comparative Study On Computing Semantic Relatedness

Waltinger U, Cramer I, Wandmacher T (2009)
In: Proceedings of the 31th Annual Conference of the Cognitive Science Society. Taatgen NA, Rijn van H (Eds); Austin, TX: Cognitive Science Society: 3016–3021.
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Conference Proceeding / Paper | Published | Quality Controlled | English
Link: http://pub.uni-bielefeld.de/publication/1904115

WikiDB: Building Interoperable Wiki-Based Knowledge Resources for Semantic Databases

Mehler A, Gleim R, Ernst A, Waltinger U (2008)
Sprache und Datenverarbeitung. International Journal for Language Data Processing 32(1).
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Journal Article | Published | Quality Controlled | English
Link: http://pub.uni-bielefeld.de/publication/1904067

Who Is It? Context Sensitive Named Entity and Instance Recognition by Means of Wikipedia

Waltinger U, Mehler A (2008)
In: Proceedings of the 2008 IEEE/WIC/ACM International Conference on Web Intelligence (WI-2008). 1 Los Alamitos, CA, USA: IEEE Computer Society: 381–384.
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Conference Proceeding / Paper | Published | English
Link: http://pub.uni-bielefeld.de/publication/1904064

Structural similarities of complex networks: A computational model by example of wiki graphs

Mehler A (2008)
Applied Artificial Intelligence 22(7-8): 619–683.
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Journal Article | Published | Quality Controlled | English
Link: http://pub.uni-bielefeld.de/publication/1586527