Abstract: A document stream filtering system includes computing hardware which is operable to execute one or more software products recorded on machine-readable data storage media. The computing hardware is operable to receive and store one or more documents of a document stream in a search index, receive one or more reference documents, calculate global document frequencies for the one or more documents of the document stream, generate a set of relevant terms and corresponding weights, generate a query by classifying the relevant terms into first and second categories, retrieve one or more documents from the search index based on the query, and filter the one or more retrieved documents based on a cut-off score.

Abstract: An information retrieval system includes computing hardware, a database operatively coupled with the computing hardware and including documents for delivery to a user in response to a user search as well as a non-transitory, computer-readable memory component operatively coupled with the computing hardware. The non-transitory, computer-readable memory component further includes a receiving module configured to, upon actuation by the computing hardware, receive a search query and a corresponding relevancy expectation score from the user; a search module configured to, upon actuation by the computing hardware, search the database against the search query provided by the user and output an original list of results each of which exhibits a numerical score; and a post-processing module configured to, upon actuation by the computing hardware, perform post-processing of the numerical scores of the results of the original list.

Abstract: A document stream filtering system includes computing hardware which is operable to execute one or more software products recorded on machine-readable data storage media. The computing hardware is operable to receive and store one or more documents of a document stream in a search index, receive one or more reference documents, calculate global document frequencies for the one or more documents of the document stream, generate a set of relevant terms and corresponding weights, generate a query by classifying the relevant terms into first and second categories, retrieve one or more documents from the search index based on the query, and filter the one or more retrieved documents based on a cut-off score.

Abstract: An information retrieval system includes computing hardware, a database operatively coupled with the computing hardware and including documents for delivery to a user in response to a user search as well as a non-transitory, computer-readable memory component operatively coupled with the computing hardware. The non-transitory, computer-readable memory component further includes a receiving module configured to, upon actuation by the computing hardware, receive a search query and a corresponding relevancy expectation score from the user; a search module configured to, upon actuation by the computing hardware, search the database against the search query provided by the user and output an original list of results each of which exhibits a numerical score; and a post-processing module configured to, upon actuation by the computing hardware, perform post-processing of the numerical scores of the results of the original list.