KR100987058B1 - Method and system for providing advertising service using the keywords of internet contents and program recording medium - Google Patents

Abstract

The present invention relates to a method, a system for providing an advertisement service, and a program recording medium therefor, which can more accurately and easily provide an advertisement related to the Internet content by using a keyword included in the Internet content. In this regard, a method of inserting an advertisement into the content of the present invention comprises the steps of: extracting a keyword from the text of the content; Requesting a server for an advertisement list associated with the keyword; Receiving an advertisement list generated by mapping the stemming analysis result of the keyword to a preset mapping keyword from the server; And inserting an advertisement included in the generated advertisement list into the content. According to the present invention, by extracting the keywords included in the content text more accurately, there is an advantage that the content creator can match the desired keyword and the related advertisement accurately.

Internet, Content, Advertising, Keywords, Blog, OPEN API

Description

TECHNICAL AND SYSTEM FOR PROVIDING ADVERTISING SERVICE USING THE KEYWORDS OF INTERNET CONTENTS AND PROGRAM RECORDING MEDIUM}

The present invention relates to a method, a system for providing an advertisement service, and a program recording medium therefor, and more particularly, to a method, a system for providing an advertisement service using a keyword of Internet content, and a program recording medium therefor.

In today's market economy, advertising plays an important role as a means of communicating the value of goods and services and selling them. In the past, such advertisements were generally made mainly through broadcast media such as TV and radio, or through newspapers and magazines. However, due to the recent widespread use of personal computers and the rapid development of the Internet, the advertisement of products or services using the Internet has been actively performed.

In the early days of Internet advertising, it was common to provide advertisements in the form of a link or banner of an advertisement desired by an advertiser on a portal site or a predetermined area of a specific website. Recently, when an internet user searches for a specific keyword through an internet search site, the Internet user has evolved to provide an advertisement service matching the keyword with the search result.

On the other hand, with the advent of Web 2.0 and Personal Media, the paradigm of Internet use is changing. An example of such a personal media or a single media is a blog service. Internet users are becoming the main producers of new information through blogs such as posting new information on events occurring overseas or using them after using products or services. The role of personal media as an information producer and the increase in traffic are increasing the global interest in the advertisement of goods or services using personal media.

As personal media evolves, attempts to maximize the effectiveness of advertising using personal media by providing advertisements that are more closely related to the contents of contents than simply providing banner advertisements or link advertisements to user-generated contents It's going on. However, there are disadvantages in that the existing advertisement providing methods using the content cannot accurately extract specific keywords in the content and thus do not provide an accurate advertisement for the keyword desired by the user. In addition, in the presence of numerous products and internet sites selling such products, it is necessary to prepare and provide a consistent advertisement list by organizing product sales lists of different internet sites in order to provide a desired advertisement link.

Accordingly, the present invention provides a method, system for providing an advertisement service using a keyword of an internet content that can accurately match a keyword desired by a content creator by extracting a keyword included in the content text, and a program recording medium therefor. The purpose is to do.

In another aspect, the present invention provides a method, system for providing an advertisement service using a keyword of the Internet content that can insert a more accurate advertisement in the content by providing a new list of advertisements unifying different product categories for each Internet site, and a program recording medium therefor. For other purposes.

Another object of the present invention is to provide a method, a system for providing an advertisement service using a keyword of Internet content that enables multi-posting to various sites by creating a single content, and a program recording medium therefor. It is done.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention, which are not mentioned above, can be understood by the following description, and more clearly by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

According to an aspect of the present invention, there is provided a method of inserting an advertisement into content, the method comprising: extracting a keyword from text of the content; Requesting a server for an advertisement list associated with the keyword; Receiving an advertisement list generated by mapping the stemming analysis result of the keyword to a preset mapping keyword from the server; And inserting an advertisement included in the generated advertisement list into the content.

In addition, the present invention provides a method for providing a keyword advertisement in a system connected to a network by the user client, comprising the steps of: receiving a request to send an advertisement list associated with the keyword extracted from the text of the content produced by the user client; Mapping the stemming analysis result of the keyword to a preset mapping keyword; Extracting a list of advertisements matching the mapping keyword; And transmitting the extracted advertisement list to the user client.

The present invention also provides a keyword advertising service providing system, comprising: a web server connected to a user client and providing a content creation function and an advertisement insertion function for a specific keyword of the content text; A keyword extraction server for extracting a specific keyword from the text of the content created by the user client; And an advertisement list server extracting an advertisement list matching the specific keyword and providing the same to the user client.

The present invention also provides a method of extracting an advertisement keyword from text of a content, comprising: extracting a keyword from the text; Morphologically analyzing the keyword; And mapping the morpheme to a preset mapping keyword.

According to the configuration of the present invention as described above, there is an advantage that can accurately match the keyword desired by the content creator and the advertisement associated with it by extracting the keywords contained in the content text more accurately.

In addition, the present invention has the advantage that it is possible to insert a more accurate advertising in the content by providing a new advertising list that unified different product categories for each Internet site.

In addition, the present invention has the advantage that it is possible to facilitate the user by enabling multi-posting to multiple sites by creating a single content.

The above objects, features, and advantages will be described in detail with reference to the accompanying drawings, whereby those skilled in the art to which the present invention pertains may easily implement the technical idea of the present invention. In describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

In the present invention, 'content' is a term used to mean a general document, a web page, a web catalog, a text, a chat, an image file, a video and a multimedia file, and an internet UCC video.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

1 is a block diagram showing a network configuration of an advertisement service providing system and a user client according to an embodiment of the present invention.

As shown in FIG. 1, the advertisement service providing system according to the present invention may include a web server 102, a keyword extraction server 104, an advertisement list server 106, and an advertisement revenue management server 108.

In the advertisement service providing system according to the present invention, the user client 100 may be connected through a network. Here, the network may include both a wired network such as an internet network and a private network, as well as a wireless network such as a wireless internet network and a mobile communication network. The user client 100 may include all terminals capable of communicating through a network including a general personal computer, a notebook computer, a mobile communication terminal, and a PDA.

According to an embodiment of the present invention, an application for providing an advertisement service may be provided to the user client 100. This application provides an editing function that allows a user to create content including text, images and videos, a function of extracting keywords from the created content text, and a list of advertisements related to the extracted keywords from the advertisement service providing system according to the present invention. Receiving and displaying the same to the content creator and inserting the advertisement selected by the content creator into the corresponding content.

The keyword extraction server 104 performs a function of extracting a keyword to insert an advertisement from the content text, and may include a morpheme analysis module and a mapping module. In an embodiment of the present invention, the content creator may directly select a specific keyword in order to insert an advertisement into the content created by the content creator, or may extract the keyword from the content text for the application of the user client 100. The stemming module is used in the latter case, that is, to extract keywords from the entire text. Here, morphological analysis means analyzing each morpheme, which is a minimum unit having a meaning, from a single word or word, and is a technique used in a conventional search engine. The stemming module is a system interworking with the DBMS (DataBase Management System), and may be implemented in a form in which the stemming module of the search engine or the optional function of the DBMS is separately separated.

However, accurate morphological analysis alone may be difficult to extract the keywords, especially in the case of compound or compound nouns. For example, stemming the word 'golf glove' will extract 'golf', 'golf field', 'glove' and 'golf glove', among which the author wants the word 'golf glove'. The list of ads will be searched for 'golf', 'golf course' and 'gloves'. In this case, a certain degree of accuracy may be guaranteed by giving priority to advertisement application. For example, if you prioritize compound nouns, general nouns, and letters, in this case, the compound noun 'golf glove' will have the highest priority, so request an ad list for 'golf glove'. Just do it. However, since this method is not always applicable, a secondary keyword filtering process is required in preparation, and this role is a mapping module included in the keyword extraction server 104.

The mapping module serves to map keywords extracted by the stemming module with more accurate commercial keywords. That is, as described above, among the various keywords extracted by the morphological analysis, it performs a role of selecting a brand name or the like that is actually preferred by many people or actually sold through an internet shopping mall. To this end, the mapping module may include a mapping dictionary, and the mapping module filters more accurate keywords by comparing keywords extracted by morphological analysis with keywords in the mapping dictionary.

The advertisement list server 106 receives a request from the user client 100 to provide an advertisement list related to a specific keyword selected or extracted in the content text. The advertisement list server 106 corresponds to an index server existing on a search algorithm, and may be implemented as an indexed database constituting an advertisement list for each keyword.

The advertisement list server 106 may include an advertisement list database storing the advertisement list. Even though the same product has different product categories or product classification criteria for each Internet shopping mall site, in order to provide an advertisement list, it is necessary to unify and manage the advertisement list of each of these different sites according to a predetermined standard. The advertisement list server 106 receives the advertisement list from each site, builds an index database, and builds and applies its own criteria category based on the advertisement list database.

The application of the user client 100, which has received an advertisement list related to a specific keyword through the advertisement list server 106, displays the advertisement list to the content creator, selects a desired advertisement, and inserts the advertisement selected by the creator into the keyword. do. The content in which the advertisement is inserted is uploaded to the website designated by the content creator by the application of the user client 100. In this case, an application may use an open API technology to allow a content creator to upload content to multiple websites simultaneously without having to visit multiple websites.

After the content is uploaded to the website, the advertisement revenue management server 108 accesses the corresponding advertisement link when the keyword included in the content is exposed to the Internet user, or when the user clicks the keyword, or by clicking the keyword. When buying a product, each activity is monitored so that content creators can earn money based on impressions, clicks, and purchases.

Up to now, the process of extracting a keyword through an application installed in the user client 100 and inserting an advertisement and uploading content for the extracted keyword has been described. However, the present invention is not necessarily implemented through such an application. For example, when a user creates content through a portal site, a shopping mall, a price comparison site, etc., the web server 102 itself uses the keyword extraction server 104 and the advertisement list server 106 without providing a separate application. The above-described keyword extraction and advertisement list providing function may be performed through interworking with the above, and the advertisement list provided by the content creator may be provided to the user client 100 to generate a content inserted with an advertisement desired by the content creator. Then, the web browser installed in the user client 100 outputs a page for creating a content, and the web browser performs an interface output process for inserting an advertisement according to the advertisement list transmitted from the web server 102 to the keyword. It is possible to create content with relevant advertisements inserted.

2 is a diagram illustrating an advertisement service provision process and an advertisement insertion content generation process through the advertisement service according to an embodiment of the present invention.

As shown in FIG. 2, a content creator first creates content that he or she wishes to post on a website. Content creation may be made by an editor provided by each website, but in FIG. 2, a separate application 200 installed in the user client 100 is provided. In Fig. 2, the author has created a content relating to the current golf putter.

According to an embodiment of the present invention, the creator can click the advertisement generation button 202 directly without specifying any word in the finished state. Then, the application transmits the text portion of the created content to the keyword extraction server 104 in the form of a query. The keyword extraction server 104 receiving the text portion primarily extracts words that can be keywords by analyzing the morphemes of the text through the morpheme analysis module. In addition to this method, when the author clicks on the advertisement generation button 202 while designating a specific word through the drag function of the mouse, a query is generated only for the designated word and transmitted to the keyword extraction server 104. have.

The keyword transmitted to the keyword extraction server 104 may go through a mapping process by the mapping module. As mentioned above, since it may be difficult to provide accurate advertisements using only keywords extracted by morphological analysis, more accurate keywords are extracted through comparison with the mapping dictionary included in the mapping module.

The extracted specific keyword is transmitted to the advertisement list server 106. The advertisement list server 106 compares the transmitted specific keyword with a product list stored in the advertisement list database, retrieves an advertisement list related to the specific keyword, and transmits the advertisement list to the user client 100.

The application of the user client 100 now shows the creator the advertisement list received from the advertisement list server 106 (204). The advertisement selection window may be output in a popup form, but is not limited thereto. As shown in FIG. 2, an advertisement link of various shopping malls related to each keyword (eg sputter, putter, etc.) may be displayed to the creator. The creator can select a keyword from which he wants to insert an advertisement, and select one of the advertisement links corresponding to the keyword. In addition, this process may be provided with an ad link duplication prevention function, and by checking whether or not to use the ad link duplication prevention function (206), it is possible to insert an ad only to the first word of the same word to prevent the link duplication. It may be.

Thereafter, when the author clicks the tag application button 208, the application of the user client 100 performs a process of inserting the selected advertisement link into the content text. Ad insertion may be inserted in the form of a hyperlink with respect to the keyword of the content text, or may be inserted in the form that the banner advertisement is activated when the mouse cursor is moved to the keyword, but is not limited thereto.

The content in which the advertisement is inserted can be uploaded to a website designated by the author. When the content is uploaded 210, when an internet user clicks on a keyword 212 in which an advertisement is inserted through a webpage on which the content is uploaded, a webpage corresponding to an advertisement link designated by the creator is displayed. Therefore, the user can purchase the product of interest at any time while viewing the content.

3 is a block diagram showing a module configuration of an application that can be installed in a user client according to an embodiment of the present invention.

The keyword extraction module 300 extracts a specific keyword to insert an advertisement in the content text. This may be performed through at least one of the stemming module or the mapping dictionary in the keyword extraction server 104. The advertisement list request and reception module 302 is responsible for requesting and receiving the advertisement list server 106 from the advertisement list related to the specific keyword extracted by the keyword extraction module 300. The advertisement selection window providing module may provide an advertisement selection window for displaying the advertisement list received from the advertisement list server 106 to the creator and selecting a desired advertisement, and may further provide an advertisement link overlap prevention function. The advertisement insertion module 306 inserts an advertisement selected by the author into a corresponding keyword.

As described above, the advertisement service according to the present invention is performed by keyword extraction in the content text. In particular, in order to provide an accurate advertisement list, it is preferable to go through a mapping process using a mapping dictionary.

4 is a block diagram showing the configuration of a mapping dictionary according to an embodiment of the present invention. As illustrated in FIG. 4, the mapping dictionary 400 may include keywords extracted from a database such as a search advertisement biz keyword 402, a shopping mall product keyword 404, and a portal site popular search term 406. In addition to such a database, the mapping dictionary 400 may be configured by referring to other databases. However, the above three databases will be described.

The search advertisement BizKeyword 402 database mainly selects high ranking keywords based on the number of clicks, views, purchase rates, etc. of advertisements displayed in a search process through an Internet search site. In the shopping mall product keyword 404 database, keywords are selected based on a list of products provided by various internet shopping mall sites. In the portal site popular search term 406 database, keywords are selected based on popular search terms of a portal site or a search site. At this time, a proper name such as a person's name or a place name is excluded, and the keyword is selected in preference to a new product.

If the keywords selected from the search advertisement biz keyword 402, the shopping mall product keyword 404, and the portal site popular search term 406 database are the same, the priority may be determined and keywords may be selected according to the priority. For example, when the priority is set in the order of the search advertisement biz keyword 402, the shopping mall product keyword 404, and the portal site popular search term 406, the search advertisement biz keyword 402 and the shopping mall product keyword 404 are the same. If a word is found, the word may be selected only from the search advertisement BizKeyword 402 database.

When the keyword extraction for the advertisement insertion is finished, the advertisement list related to the keyword should be extracted. This may be done through an advertisement listing database included in the advertisement listing server 106.

5 is a block diagram showing the configuration of the advertisement list database according to an embodiment of the present invention. As described above, there are many Internet shopping malls selling products on the Internet, and even though the same products have different product categories or product classification criteria for each Internet shopping mall site, in order to provide an advertising list, the advertisement list of each site may be There is a need for unified management. Therefore, the index database 510 is constructed based on the product list acquired in each of the Internet shopping malls 500, 502, 504, 506, and 508, and based on this, a new advertisement category is applied to form a single advertisement list database 512. ) Can be made. Through this, the advertisement list server 106 may quickly and accurately provide advertisement links of different Internet shopping malls with respect to a specific keyword.

The advertisement list database 512 thus created may store an advertisement list having a predetermined format. Table 1 shows the field configuration of the advertisement list database according to an embodiment of the present invention.

product name price manufacturer Retailer (URL)

The advertisement list server 106 may compare and search a specific keyword and a brand name of Table 1, and transmit matching data to the user client 100.

6 is a flowchart illustrating a process of providing an advertisement insertion service according to an embodiment of the present invention.

If a content insertion request is received from the content creator after completion of content creation, the user client extracts a specific keyword from the text of the content (600). This extraction process may be performed through morphological analysis or by extracting the keywords directly selected by the author.

Next, the server requests a list of advertisements related to the extracted specific keyword (602). The server will then provide a list of relevant advertisements to the user client, which the client receives (604), and provides the creator with an advertisement selection window (606) that arranges the received list of advertisements in a predetermined manner. In this case, the author may check whether the advertisement link is prevented from overlapping (608).

If the author selects a keyword and an advertisement to be inserted in step 606, the user client inserts the advertisement selected by the author into the corresponding keyword in the content (610). The generated content may be uploaded to a website designated by the author, or may be posted on a specific bulletin board provided by a server.

7 is a flowchart illustrating an operation process of a keyword advertisement providing system according to an embodiment of the present invention.

First, after extracting a specific keyword in the content text from the user client, the keyword advertisement providing system is requested 700 from the user client to transmit an advertisement list related to the specific keyword. As described above, the keyword may be a keyword extracted by stemming or may be a keyword directly designated by the content creator.

Next, in order to provide a more accurate advertisement list, the extracted specific keyword is compared with the keyword in the mapping dictionary and filtered (702). Here, the term 'filtering' is used in the same or similar meaning as the term 'mapping'. This process is mentioned above, so the detailed description will be omitted.

Then, the advertisement list matching the filtered keyword is extracted through the advertisement list database (704). The extracted advertisement list is sent to the user client (706), through which the user client can provide an advertisement insertion service to the content creator.

After the above-described process is completed the content inserted the advertisement desired by the content creator, the content may be uploaded to a specific site designated by the author. Such content may be exposed to general Internet users, who may click on an advertisement link within the content to access an advertiser's site and purchase a product. Hereinafter, a method for distributing revenue to a content creator through the advertisement revenue management server 108 after uploading the content having an advertisement inserted therein will be described.

If the user attempts to access the site where this content is uploaded through the user client 100, the user client 100 will request the web server 102 to send the web page, and the web server 102 will send the web. Send the page to the user client. Here, the web page means a web page including the content in which the advertisement is inserted. When the user accesses the web page as described above, the web server 102 transmits the exposure traffic to the advertisement revenue management server 108 according to the present invention.

If the user clicks on an advertisement link included after accessing the web page, the user client 100 connects to an advertiser server (or an agency server that publishes an advertiser site). The advertiser server accordingly sends click information of the advertisement link to the advertisement revenue management server 108.

Thereafter, when the user purchases the advertiser's product, the user client 100 transmits the user's purchase selection information to the advertiser server, and the advertiser server transmits the purchase traffic to the advertisement revenue management server 108.

The advertisement revenue management server 108 receives the exposure traffic information of the content, the click information of the advertisement link, and the purchase traffic information of the product, and generates statistical data using the same, and advertises it to the content creator according to the statistical data. Providing revenue.

The criteria for determining the advertisement revenue may be variously determined according to the selection of the advertiser or the content creator. Such criteria include cost per click (CPC), cost per sale (CPS), cost per action (CPA), cost per period (CPP), click through rate (CTR), cost per millennium (CPM), and the like.

According to the present invention, by extracting the keywords included in the content text more accurately, there is an advantage that the content creator can match the desired keyword and the related advertisement accurately.

In addition, the present invention can insert a more accurate advertisement in the content by providing a new list of advertisements that unify different product categories for each Internet site, and for the convenience of users by enabling multi-posting to multiple sites in one content creation There is an advantage to this.

The method of the present invention as described above can be written in a computer program. And the code and code segments constituting the program can be easily inferred by a computer programmer in the art. In addition, the written program is stored in a computer-readable recording medium (information storage medium), and read and executed by a computer to implement the method of the present invention. And the recording medium includes all types of recording media (intangible medium such as a carrier wave as well as tangible media such as CD and DVD) readable by a computer.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by.

1 is a block diagram showing a network configuration of an advertisement service providing system and a user client according to an embodiment of the present invention.

2 is a diagram illustrating an advertisement service providing process and an advertisement insertion content generation process through the same according to the present invention;

3 is a block diagram showing a module configuration of an application that can be installed in the user client according to an embodiment of the present invention.

4 is a block diagram showing the configuration of a mapping dictionary according to an embodiment of the present invention.

5 is a block diagram showing the configuration of the advertisement list database according to an embodiment of the present invention.

6 is a flowchart illustrating a process of providing an advertisement insertion service according to an embodiment of the present invention.

7 is a flow chart showing the operation of the keyword advertising providing system according to an embodiment of the present invention.

Claims (21)

In the method of inserting an advertisement into the content, Extracting keywords from text of the contents; Requesting a server for an advertisement list associated with the keyword; Receiving an advertisement list generated by mapping the stemming analysis result of the keyword to a preset mapping keyword from the server; And Inserting an advertisement included in the generated advertisement list into the content; How to insert an advertisement into the containing content. The method of claim 1, The keyword is And inserting an advertisement into content, which is one or more keywords designated by the creator of the content among the text of the content. The method of claim 1, The advertisement list is a method of inserting an advertisement in the content arranged using at least one criterion of the keyword, reference category, product name, price, manufacturer, sales place. The method of claim 3, wherein Determining whether the creator prevents duplicate ad links; And when the author confirms that the advertisement link is prevented from overlapping, the advertisement is inserted into the content for inserting the advertisement only for the first keyword among the same keywords in the text of the content. A computer-readable recording medium having recorded thereon a program for executing the method according to any one of claims 1 to 4. In the method for providing advertising to the content, Receiving a keyword extracted from the text of the content from a user client; Mapping the stemming analysis result of the keyword to a preset mapping keyword; Morphologically analyzing the keyword; Mapping the analyzed morpheme to a preset mapping keyword; Extracting a list of advertisements matching the mapping keyword; And Transmitting the extracted advertisement list to the user client How to provide a keyword ad. The method of claim 6, And the keyword is one or more keywords designated by the content creator. The method of claim 6, The mapping with the mapping keyword is The method of providing an advertisement insertion service is performed according to the ranking of the mapping keyword in a preset mapping dictionary. The method of claim 8, The mapping dictionary is Ad keyword extraction method comprising a mapping keyword that is ranked based on at least one of the number of clicks, views, purchase rate, search, or new products. The method of claim 6, Extracting the list of advertisements A method of providing a keyword advertisement, which is performed by extracting an advertisement list for a product matching the mapping keyword from an advertisement list database. The method of claim 6, Collecting at least one of exposure traffic information of the content in which the advertisement is inserted, click information of an advertisement link inserted in the content, or purchase traffic information of the product through the advertisement link inserted in the content; And Generating statistical data using the collected information; Keyword advertisement providing method for providing the advertising revenue to the content creator in accordance with the statistical data. The method of claim 11, Wherein the advertising revenue is determined by the criteria of at least one of CPC, CPS, CPA, CPP, CTR or CPM. A web server providing an application for performing an advertisement insertion function for a keyword of the text of the content to a user client; A keyword extraction server that extracts the keyword from the text of the content created by the user client; And An advertisement list server extracting an advertisement list matching the keyword and providing the same to the user client; Keyword advertising service providing system comprising. The method of claim 13, The keyword extraction server And a morphological analysis module for extracting the keyword through morphological analysis from the content text. The method of claim 14, The keyword extraction server And a mapping module for mapping the stemming analysis result of the keyword to a preset mapping keyword. The method of claim 13, The ad list server Ad list database that stores the list of ads associated with the specific keyword Keyword advertising service providing system comprising. The method of claim 13, Collecting at least one of exposure traffic information of the content in which the advertisement is inserted, click information of an advertisement link inserted in the content, or purchase traffic information of the product through the advertisement link inserted in the content, and the collected information Ad revenue management server to generate statistics using Keyword advertising service providing system further comprising. The method of claim 17, The ad revenue management server The keyword advertising service providing system for determining the advertising revenue for the content provider based on at least one of CPC, CPS, CPA, CPP, CTR or CPM using the collected information. In the method of extracting the advertising keyword from the text of the content, Extracting a keyword from the text; Morphologically analyzing the keyword; And Mapping the morpheme to a preset mapping keyword; Ad keyword extraction method comprising a. The method of claim 19, The mapping with the mapping keyword is The advertisement keyword extraction method performed according to the ranking of the mapping keyword in a preset mapping dictionary. The method of claim 20, The mapping dictionary is Ad keyword extraction method comprising a mapping keyword that is ranked based on at least one of the number of clicks, views, purchase rate, search, or new products.

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