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An information retrieval method and device thereof

An information retrieval and information library technology, applied in the field of information processing, can solve problems such as the inability to accurately describe the advertisement information of the advertiser, the inability to accurately describe the characteristics of the advertisement, and the inability to distinguish keywords in detail.

Active Publication Date: 2016-03-23
SHENZHEN GLOBEBILL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the advertising delivery system, the query words that characterize user characteristics usually have high and low points. For example, a user usually has multiple interest groups and belongs to multiple categories, but according to the user's recent visit behavior, the level of each interest can be determined. Therefore, if the scoring algorithm of the search engine system is simply used, it is impossible to accurately describe the characteristics of the target audience of the advertisement
[0005] In addition, search engines usually do not distinguish the keywords in the document. Even if they do, they only assign different weights to different domain information in the document, and do not distinguish each keyword in the document in detail. In the advertisement delivery system, the keywords in the advertisement Each keyword is usually the strategic information and bidding keywords bound by the advertiser, and these information are high or low. For example, if an advertiser is more concerned about delivering ads to a certain type of users, he may pay the bidding keyword Higher prices, so the simple use of search engine technology can not accurately give the advertiser's description of the advertising information

Method used

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  • An information retrieval method and device thereof
  • An information retrieval method and device thereof
  • An information retrieval method and device thereof

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0063] figure 2 is the flow chart of the information retrieval method described in this embodiment, as figure 2 As shown, the information retrieval method described in this embodiment includes:

[0064] Step S201, segment each information file in the information base to obtain strategic words, and score each strategic word to obtain the weight of each strategic word in each information file;

[0065] Segmentation is a basic subject in the field of information processing such as information extraction and information retrieval. Current Chinese word segmentation algorithms include rule-based word segmentation methods, understanding-based word segmentation methods, and statistical-based word segmentation methods. The present invention specifically selects which method to perform word segmentation based on Specific application aspects of the invention will vary.

[0066] Taking the application to the advertising push business as an example, a word segmentation method based on ...

Embodiment 2

[0114] Figure 5 is a structural block diagram of the information retrieval device described in this embodiment, as Figure 5 As shown, the information retrieval device described in this embodiment is located at the server end, and includes an inverted index table creation unit 501 , a screening unit 502 , a scoring unit 503 , a sorting unit 504 and a file pushing unit 505 .

[0115] Each module is introduced as follows:

[0116] The inverted index table creation unit 501 is used to pre-segment each information file in the information base to obtain strategic words, and obtain the weight of each strategic word in each information file according to the preset scoring standard. Internally create an inverted index table for each strategy word, and record the weight, occurrence times and occurrence position of each strategy word in each information file in the inverted index table.

[0117] Segmentation is a basic subject in the field of information processing such as informatio...

Embodiment 3

[0149] This embodiment proposes an information retrieval system. The information retrieval system described in this embodiment includes a client and a server, wherein the server is the information retrieval device described in Embodiment 2. For specific implementation methods, refer to Embodiment 2; Wherein the client includes a user feature word extraction module and a feature word weight calculation module.

[0150] The user feature word extraction module, when receiving a user retrieval request, is used to extract the feature words in the retrieval request, and sends the feature words to the scoring and sorting module of the server;

[0151] The scheme for extracting feature words is as follows: when receiving a search request from a user, perform word segmentation on the request information, and extract feature words in the search request.

[0152] The feature word weight calculation module is connected with the user feature word extraction module, receives the feature wor...

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Abstract

The invention discloses an information retrieval method and device. The information retrieval method comprises the steps: S1, segmenting each information file in an information base to obtain strategy words, and obtaining the weight of each strategy word in each information file according to preset evaluation standard; S2, creating an inverted index table and recording the weights of all strategy words in all information files in the inverted index table; S3, when a user retrieval request is received, extracting the feature words in the retrieval request; S4, respectively calculating the weights of all feature words on the basis of the corelation between the feature words and the behavior features of the user; S5, obtaining candidate information files and respectively calculating the total score of each candidate information file; and S6, ranking the candidate information files according to the total score and pushing the candidate information file ranked at the top to the user. The information retrieval method and device enable the information files to be pushed to more accurate defined target users and make the pushing of the information file be more purposefully.

Description

technical field [0001] The present invention relates to the technical field of information processing, in particular to an information retrieval method and its device and system. Background technique [0002] In recent years, the Internet has become an important media channel for the advertising industry. Many large portal sites or search engine sites provide platforms for advertising. Most of these advertising delivery platforms are based on the principle of search engines, classify users according to the behavior of users visiting browser pages, and select target audiences on the Internet according to advertisers' delivery strategies to target advertisements. [0003] The most important module in the advertising delivery system is the advertising search module, which searches for the most matching advertisement that is expected to be delivered to this type of user based on the keywords and classifications extracted by other modules that characterize the user's interests a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/30
Inventor 罗峰黄苏支李娜
Owner SHENZHEN GLOBEBILL TECH CO LTD