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Method for building requirement analysis formwork and method and device for searching requirement recognition

A demand analysis and demand technology, applied in the computer field, can solve the problems of labor cost, query cannot identify the type of demand, and narrow application, so as to save labor cost, improve the recall rate and recognition accuracy, and expand the application area. Effect

Inactive Publication Date: 2013-03-27
BEIJING BAIDU NETCOM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Defect 1. The number of demand analysis templates is small, and the templates summarized manually are generally about a few hundred, and the scope of application is narrow
[0005] Defect 2. Manual participation is required, which consumes labor costs
[0006] Defect three, low recall rate
Usually, the manually summarized template may be different from the query form finally entered by the user. Such inconsistency causes many queries to be unable to identify the type of requirement.
[0007] Defect 4. Low recognition accuracy
Manually summarized and written templates are difficult to obtain a comprehensive inspection and guarantee of accuracy. For example, when people observe the query "desktop background" and "Windows desktop background" that require pictures, they write the template "[W+] background", using When identifying a query with a picture requirement, there will be many errors caused by this template, for example, the query "Yaojiaxin background" and "father's background" without a picture background are mistakenly recognized as having a picture requirement

Method used

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  • Method for building requirement analysis formwork and method and device for searching requirement recognition
  • Method for building requirement analysis formwork and method and device for searching requirement recognition
  • Method for building requirement analysis formwork and method and device for searching requirement recognition

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Experimental program
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Effect test

Embodiment 1

[0060] figure 1 The flow chart of the establishment method of the demand analysis template provided by Embodiment 1 of the present invention, such as figure 1 As shown, the establishment process of a requirement analysis template for one of the requirement types includes the following steps:

[0061] Step 101: Obtain the set of seed queries of the requirement type.

[0062] First, it is necessary to preset seed query sets of various types of requirements. These seed query sets can be manually configured, but since template mining usually requires a large number of seed queries, the cost of manual labeling and review is too high. Preferably, In the embodiment of the present invention, the method of automatically obtaining the seed set of the required type may specifically include but not limited to the following:

[0063] The first way: Obtain queries whose search times are higher than a preset first threshold from the search log of the vertical search of the demand type, and...

Embodiment 2

[0119] figure 2 The device structure diagram for establishing a demand analysis template provided by Embodiment 2 of the present invention, such as figure 2 As shown, the device may include: a seed acquisition unit 201 , a phrase determination unit 202 , a candidate template determination unit 203 and a template selection unit 204 .

[0120] The seed obtaining unit 201 obtains a set of seed queries of preset demand types. The set of seed queries can be manually configured, but since template mining usually requires a large number of seed queries, the cost of manual labeling and review is too high. Preferably, in the embodiment of the present invention, the method of automatically obtaining the required type The ways of seed collection can include but not limited to the following:

[0121] Method 1. Obtain queries whose search times are higher than the preset first threshold from the search log of the vertical search of the requirement type to form a seed query set of the r...

Embodiment 3

[0137] image 3 The structure diagram of the device for identifying search requirements provided by Embodiment 3 of the present invention. The device realizes the recognition of query search requirements on the basis of the device for establishing a requirement analysis template shown in Embodiment 2, as shown in image 3 As shown, the device may include:

[0138] The request acquiring unit 301 is configured to receive a query to be identified.

[0139] The template matching unit 302 is configured to match the query to be identified with the requirement analysis templates of each requirement type, and determine that the requirement type corresponding to the successfully matched requirement analysis template is the requirement type of the query to be recognized.

[0140] The requirement analysis templates of each requirement type are established by the device for establishing a requirement analysis template shown in the second embodiment.

[0141] After using the above method...

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Abstract

The invention provides a method for building requirement analysis formworks and a method and device for searching requirement recognition. The method for building the requirement analysis formwork includes acquiring a seed query set of requirement type, determining all n-ary phrase (n-gram) with n to be one or a plurality of preset positive integers, replacing N1 n-gram with lowest occurrence times in each seed query of the seed query set with a wildcard character according to the occurrence times of the n-gram in the seed set of the requirement type and obtained by statistics to obtain a candidate requirement analysis formwork with N1 being the preset positive integer, conducting confidence coefficient grading on the candidate requirement analysis formwork, selecting candidate requirement analysis formworks with confidence coefficient ranging at first N2 to be the requirement analysis formworks of the requirement type with N2 being a preset positive integer. The method is capable of saving manpower and cost, expanding suitable face and improving recall rate and recognition accuracy.

Description

【Technical field】 [0001] The invention relates to the field of computer technology, in particular to a method for establishing a demand analysis template, a method and a device for searching for demand identification. 【Background technique】 [0002] With the rapid development and maturity of the Internet on a global scale, the information resources on the network are constantly enriched, and the amount of information data is also expanding rapidly. Obtaining information through search engines has become the main way for modern people to obtain information. In order to provide users with more convenient and accurate query services is the current and future development direction of search engine technology. [0003] In search engine technology, identifying the user's search needs is an important part of improving search accuracy and effectiveness, especially in structured search (ie, vertical search). After analysis, it is found that when users use query to express their sear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 黄际洲
Owner BEIJING BAIDU NETCOM SCI & TECH CO LTD
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