Successive principal axes filter method of multi-document automatic summarization

An automatic summary and multi-document technology, applied in the field of text information, can solve problems such as low precision, high cost, and limited application, achieving high precision and good results

Inactive Publication Date: 2007-08-01
FUDAN UNIV
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Problems solved by technology

The advantage of this method is that the accuracy is relatively high, but the disadvantage is that it is not widely used. Generally, it only summarizes documents in a specific field, and the cost of manually giving a summary is also very expensive.
[0004] 2. Unsu

Method used

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  • Successive principal axes filter method of multi-document automatic summarization
  • Successive principal axes filter method of multi-document automatic summarization
  • Successive principal axes filter method of multi-document automatic summarization

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Embodiment Construction

[0015] The basic process is to express each sentence as a space vector, calculate the similarity between two sentences, obtain a similarity matrix, obtain the main feature vector to obtain the importance of each sentence, extract the most important sentence, and then Redundant information between the remaining sentences and the extracted sentences is removed.

[0016] 1. The vector space representation of sentences.

[0017] Suppose there are now n sentences, and a total of m words appear. Then each sentence is represented by an m-dimensional vector, and n sentences form an m×n matrix, denoted as M. m ij Represents the tfidf value of the i-th word in the j-th sentence: M ij = tf ij × log n df i , where tf ij Indicates the frequency of the i-th word appearing in the j-th sentence, df i Indica...

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Abstract

This invention relates to one multi-file automatic abstract order main axis filter method in text information technique, which is based on OR rotation axis method comprises the steps of sentences similarity computation and analyzing main axis and abstracting sentence redundant part.

Description

technical field [0001] The invention belongs to the technical field of text information, and in particular relates to a multi-document automatic summarization method. Background technique [0002] With the rapid development of communication, people are increasingly enjoying the convenience brought by information, especially text information, including emails, web pages, short messages and so on. A problem that comes with it is that the large amount of information often makes it difficult to grasp the key points. How to use computers to help people analyze these information and pick out important information has become a very important issue. Automatic summarization is produced to meet such needs. It is divided into single-document summarization and multi-document summarization. Due to too much information in reality, multi-document summarization is more widely used. It generates an abstract for multiple documents and submits it to users. The current summarization technolo...

Claims

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Application Information

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IPC IPC(8): G06F17/27G06F17/28
Inventor 黄萱菁赵林吴中勤刘菲
Owner FUDAN UNIV
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