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Semantic-based query expansion is one of the hottest researches in the field of current information retrieval, but it still lacks a better recognized solution. The traditional vector space model succeed in solving the problem of relevance-match between two documents, but it ignores the semantics relevance between the basic language units which constitute the vector. This paper proposes an improved...
A mathematical and statistical model for complex point targets is proposed that may be applicable to statistical inference problems in multistatic or MIMO radar systems. Such targets are not resolved in space, but exhibit varying complex reflectivity across different bistatic view angles. The complex reflectivity can be modeled as a complex stochastic process whose index set is the set of all bistatic...
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