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Reconfigurable computing based on FPGA is a promising solution to accelerate applications for web search engines. Due to the challenge of such data-intensive applications, data compression has become much more important. This paper proposes a data compression method for inverted indices, which combines the bit-level compression method - Huffman coding and a coarse-grained compression method, to achieve...
Point out that the document is too similarity in the return document sets in current information retrieval system. Put forward the new definition of mutual independence in the documents. Then, construct the mutual independence in the documents. Design one new algorithm for information retrieval. The method effectively overcomes the shortcomings of the original query system. The experiment express...
In order to quickly and accurately using mass information in the deep Web database. According to the characteristics of the deep Web: large-scale, dynamic and heterogeneity. Put forward one new query fusion method based on the prediction query performance (PQP) for the first time. And put forward a new pseudo prediction query performance method. Adopted testing data of UIUC. The experiment show the...
In order to quickly and accurately using mass information in the deep Web database. According to the characteristics of the deep Web: large-scale, dynamic and heterogeneity, One new query method was put forward based on the document divergence for the first time. The experiment adopted testing data of TREC show the method can avoid the repeat of query document in effect, especially for a great deal...
Put forward a new information retrieval method based on the query specificity after analyzing the existing problems of information retrieval system. The experiments show that the system has better query performance. Avoid the similarity documents in the first few pages effectively, when the system return a larger set of query documents.
Prediction query performance (PQP) has been recognized by the IR (Information Retrieval) community as an important capability for IR systems. This paper put forward pseudo prediction query performance in the base of analyzing PQP. The authors design a new IR method. The experiment adopted testing data of TREC Web Track shows the method can improve the effectiveness of query.
Now the difficulty of information query on the Web is there is not matching between short, misty user query and the document of existing a great deal of redundancy and noise. Anew query method was brought forward based on first item clicked feedback under the analyzed excellent and disadvantage of relevance feedback and pseudo feedback.Present a measure of first item-clicked feedback. The experiment...
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