Emergent Semantics in Knowledge Sifter: An Evolutionary Search Agent Based on Semantic Web Services [chapter]

Larry Kerschberg, Hanjo Jeong, Wooju Kim
2006 Lecture Notes in Computer Science  
This paper addresses the various facets of emergent semantics in content retrieval systems such as Knowledge Sifter, an architecture and system based on the use of specialized agents to coordinate the search for knowledge in heterogeneous sources, including the Web, semi-structured data, relational data and the Semantic Web. The goal is to provide just-in-time knowledge to users based on their decisionmaking needs. There are three important factors that can assist in focusing the search: 1) the
more » ... user's profile, consisting user preferences, biases, and query history, 2) the user's context to focus on the current activity, and 3) the user's information space, in which he may receive the information on specialized hardware with limited bandwidth, implying so that the knowledge must be filtered and tailored to the presentation medium. Emergent semantics in the context of Knowledge Sifter allow for evolutionary adaptive behavior. We present a meta-model that captures the agent operation and interactions, as well as the artifacts that are created and consumed during system operation. These are stored in a repository, and a collection of emergence agents are presented that perform emergence functions such as data mining for patterns, concept discovery, user preferences tracking, collaborative filtering of user profiles, results ranking, and data source reputation.
doi:10.1007/11803034_9 fatcat:ihjzskzvo5fwvfbov4rm325urq