Text-based information systems: efficient text indexing; Boolean and vector space retrieval models; evaluation and interface issues; Web search including crawling, link-based algorithms, and Web metadata; text clustering, classification and text mining; cross-lingual aspects of information retrieval (CLIR) with emphasis on Arabic. Emphasis will be on recent developments in search engines, querying, and CLIR. Interaction between natural language processing and information retrieval tools. Tools for information retrieval.
