Topic-specific information gathering based on Web metadata
Xiaoxin Liao · Systems engineering and electronics · 2007
Topic-specific Web search engine is a new direction of information retrieval.Rather than collecting and indexing all accessible Web documents,the topic-specific Web search system restricts its crawl boundary to find links that likely to be most relevant to the given topic.Topic-specific information gathering is the sticking point in the full system.The significance of Web metadata in topic-specific information gathering is discussed.Meanwhile,based on Web metadata,a topic expansion system and a topic-specific information gathering system are designed and a new approach for guiding crawlers to gather topic relevant pages is proposed.Experimental results indicate that the proposed approach has better performance.