KR20060002102A - A system and method for searching contents of book - Google Patents

Abstract

The present invention relates to a book text search system and method using an Internet search site, and more particularly, to store text content of a book in a database for each section, and search for a predetermined text content for each section according to a user's search request. The present invention relates to a book text search system and a method that can be provided to a user section by section.

The method of providing a book text search service according to the present invention comprises: maintaining a book information database for storing book information including a book identifier for identifying a book or text content for each section of the book, and receiving a search term from a user. Searching for the text content including the search word by referring to the book information database, and providing the searched text content to the user for each section.

According to the method and system for providing a book text search service according to the present invention, a book text database is constructed by converting a book content into an electronic document, and a title or table of contents field is provided through a user interface providing means for book search of an Internet search site. In addition, by providing a user with a search service for the text content, it is possible to obtain an effect of searching a desired book in detail in a wider range with minimal information.

Book, body, query, section

Description

Book Text Search System and Method {A SYSTEM AND METHOD FOR SEARCHING CONTENTS OF BOOK}

1 is a diagram illustrating a book search service providing screen of a conventional Internet online bookstore.

2 is a flowchart showing a method of the first embodiment according to the method for providing a book text search service of the present invention.

3 is a diagram illustrating a screen of a book text search result according to the first embodiment of the present invention.

4 is a flow chart showing the method of the second embodiment according to the method for providing a book text search service of the present invention.

FIG. 5 is a diagram showing a screen of a book text search result according to the second embodiment of the present invention shown in FIG.

6 is a flowchart showing the method of the third embodiment according to the method for providing a book text search service of the present invention.

7 is a flowchart showing the method of the fourth embodiment according to the method for providing a book text search service of the present invention.

8 is a diagram showing a screen of book text search results according to the third and fourth embodiments of the present invention.

9 is a block diagram showing the configuration of a book text search service providing system according to the present invention;

10 is an internal block diagram of a general purpose computer system that may be employed to construct a book text retrieval service providing system in accordance with the present invention.

<Explanation of symbols for the main parts of the drawings>

910: Book Information Database

920: means of providing the user interface

930: search unit

The present invention relates to a book text search system and method using an Internet search site, and more particularly, to store text content of a book in a database for each section, and search for a predetermined text content for each section according to a user's search request. The present invention relates to a book text search system and a method that can be provided to users in sections.

In recent years there have been many advances involving computers. Most computers are now based on the expressive power of multimedia, and the drop in computer prices makes it very easy for many people to acquire and use information. With the development of computers, high-speed information and communication networks are also developing very rapidly in terms of quantity and quality. Thanks to this trend, most people are using computers to get the information they need from the Internet.

When searching for information using the Internet, most people use a search service of an Internet portal site. Internet portal sites provide search services for many types of content, including website search, document search, article search, knowledge search, dictionary search, news search, and map search. However, due to the rapid development of information technology, the modern society needs to search for more specialized and accurate information or more refined information. In the information search through the conventional portal site search service, as users need such search needs The situation is not satisfied.

In a conventional information search using a portal site search service, a web site, a document, a paper, knowledge, or the like including a search word input by a user as a search result is provided. Most of the websites derived from the search results are often used as public relations means of companies that operate websites based on commercial purposes, so it is difficult to expect professional information desired by users. In addition, since documents and knowledge search results often contain unverified information of the general public, the information is inferior in accuracy, and the paper search results are written by scholars in each field. Accuracy can be expected, but due to the nature of the thesis, only a part of the relevant field is covered, and the scope of the information is narrow in most cases, and it is too specialized to be easily understood by the general public and is often provided as a paid service. There is a disadvantage in that it is difficult to do so, and the necessity of providing information or refined information as a search result which can guarantee the expertise of a wider range of information is increasing.

In addition, the conventional online bookstore site based on the Internet provides information on books offline, and provides an online book search service so that a user can search for and purchase a book that the user needs.

1 is a diagram illustrating a book search service providing screen of a conventional Internet online bookstore.

The book search service of an online bookstore according to the prior art is a book search item, as shown in FIG. 1, which includes a book name, an author, a subject, a publisher, a table of contents, a publication date, and an ISBN (International Standard Book Number). It provides a book search service that allows you to search for book information. Although the online bookstore book search service of FIG. 1 provides a relatively wide variety of book search items for book searching, the information of the book desired by the user (for example, book name, author, subject, publisher, publication date, table of contents, If you do not have an ISBN, that is, if you want to search for all books that contain vague text or phrases, rather than a search for a specific book, the prior art online book search service will There was a problem that could not meet the needs of. That is, the keyword search for the text content of the book was not possible by the book search service according to the prior art.

The present invention has been made to improve the prior art as described above, and converts the body content of the book into an electronic document such as an XML document to store the book body database for each section, and in addition to the title or table of contents field of the book It is an object of the present invention to provide a method and system for providing a book text search service that can search a desired book in detail in a wider range with minimal information.

In addition, an object of the present invention is to provide a method and system for providing a book text search service that the text content including a search word selected by a user among the entire text contents of a predetermined book can be provided to the commercial user as a search result. In particular, by dividing and storing the body content for each section, and by using the section as a search unit to determine the relevance to the search terms entered by the user for each section to provide the body content corresponding to the more relevant section, etc. It is an object of the present invention to provide a method and system for providing a text search service that can provide various services.

In addition, the present invention provides a method for providing a text search service that allows the user to more easily recognize the search results by providing the user by sorting the text content for each section according to various criteria when a plurality of section text content is searched; It is an object to provide a system.

In addition, an object of the present invention is to provide a method and system for providing a text search service which can provide a text search service only for books belonging to a predetermined category or not belonging to a predetermined category.

In addition, by providing the book text search of the present invention in the integrated search site of the Internet, it is possible to make the book search easier and display the purchase information of the book together with the searched text contents, thereby promoting the user's desire to purchase the book. An object of the present invention is to provide a method and a system for providing a book text search service.

In order to achieve the above object and to solve the problems of the prior art, the book text retrieval service providing method of the present invention is a book storing a book information including a book identifier for identifying the book, or the body content of each section of the book Maintaining a database of information, receiving a search word from a user, searching for a text content including the search word with reference to the book information database, and providing the searched text content to the user by section; Characterized in that.

In addition, the method of providing a book text search service of the present invention comprises the steps of: maintaining a book identifier database for storing a book identifier for identifying a book, or book information including the section content of the book, a book identifier from a user and Receiving a search request including a search term, searching for book information including the book identifier by referring to the book information database, searching for text content including the search word among the searched book information, and And providing the searched text content to the user for each section.

In addition, the method of providing a book text retrieval service of the present invention includes maintaining a book information database storing book information including a book identifier for identifying a book, a category associated with the book identifier, or a section content of the book. Receiving a search request including a category and a search word from a user, searching for book information including the selected category by referring to the book information database, and searching for text content including the search word among the searched book information And providing the searched text content to the user for each section.

The term "section", which is widely used in the present specification, is a division unit for dividing the entire text of a book into a predetermined unit (for example, every 5 pages, every 3000 characters, etc.). In addition, according to an embodiment, the section may be used to identify the body content of any one unit among a plurality of body contents divided by sections. That is, the section may include page information for identifying the main content of pages 1 to 5.

In addition, "book identifier" is a means for distinguishing a large number of books, for example, may be defined by the name of the book, "category" refers to each field (for example, literature, science, language, people, Society, etc.) to be used to classify books by the field.

The book information data base of the book text search service providing system according to the present invention stores book information in association with a category selected for each field, and the book information may include a book identifier or a section content. have. That is, the text content of one book is stored in sections by section.

Hereinafter, a preferred embodiment of a method and system for providing a book text search service according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a flowchart showing a method of the first embodiment according to the method for providing a book text search service according to the present invention.

In the method for providing a book text search service according to the first embodiment of the present invention, text content corresponding to a search word input from a user is searched and provided for each section. In addition, in the present embodiment, when a plurality of text contents of the same book are searched for each section, only the text contents of a selected section among the plurality of section text contents are selectively provided to prevent multiple search results from appearing in the same book. You may.

The book text search service providing method according to the present embodiment may be performed by the book text search service providing system 900 as illustrated in FIG. 9. In addition, the book text search service provided according to the present embodiment may be provided through an integrated search site such as a portal site so that the user can easily access the book text search service.

As described above, the book text search service providing system 900 includes a book information database 910, and the book information database 910 includes a book identifier for identifying a book and text content for each section of the book. Book information is recorded.

As described above, the section is a division unit used to divide the entire body of the book into a plurality of body contents, and the number of letters, pages, or a bundle of pages may be used. Therefore, the entire body content of the book consists of body content divided into one or more sections. For example, the entire body content of the book is divided into ten pages (per section) and stored in the book information database 910.

Also, the section may be used as a search unit for searching the text content of a book according to a user's book text search request, as described below.

When the book text search service providing system 900 receives a book text search request including a predetermined search word from a user (steps 211 and 212), the text content including the search word is referred to the book information database 910. Is searched by section with reference to the book information database (step 213). In this way, since the body content is searched by section, when only the part of the book contains the search word, only the body content of the section to which the part belongs is searched as a search result. For example, if a portion including a search word input by a user includes only 10 pages of a predetermined book, and the body content of pages 6 to 10 constitutes one section, only the body content of the section is searched.

In operation 222, the book text search service providing system 900 provides the searched text content by section. For example, when three body contents for each section including the search word are searched, three search results are provided to the user.                     

In addition, according to another embodiment of the present invention, when one or more section text contents are searched, the book text search service providing system 900 provides only the selected section text contents to the user among the found section text contents. Alternatively, it may be processed and provided by a predetermined display method.

Hereinafter, a description will be given of a configuration of selectively providing only a predetermined number of section-specific text contents having a high relevance when a plurality of section text contents are searched for the same book.

The book text search service providing system 900 refers to the book information database 910 to determine the book identifiers associated with the found section-specific text content (step 214). The book identifier may be a book name of a book including the text content of each section, and a serial number assigned to the book.

When the book identifier is determined, the book text retrieval service providing system 900 identifies and selects the text content having the same book identifier as the section for each section (step 215). For example, if the book identifiers associated with each of the two retrieved body contents are identically identified, the two retrieved body contents are part of the entire body contents of the same book. As such, when a plurality of book identifiers associated with each of the searched text contents are determined, the book text search service providing system 900 calculates a degree of relevance between the text content for each selected section and a search word input by the user (step ( 216)).

For example, the book text search service providing system 900 calculates the number of the search terms included in the text content identified for each section, so that the more the search terms calculated, the more the search term is related to the body content identified for each section and the search term. The higher the degree can be calculated, and the smaller the number of the search terms calculated, the lower the relevance can be calculated.

Based on the relevance calculated in step 216, one of the body content identified by the section is highly relevant (step 217), and the selected body content is the body content for each section having a different book identifier. To provide with the user. That is, the text content for each section is not provided for the same book, and the text content for each section for different books is provided as a search result.

At this time, according to another embodiment of the present invention, the book text search service providing system 900 includes a predetermined amount (eg, two lines before and after including the search word) including a search word input by a user from the searched text content. The body content of the text including 50 words before and after the search term) may be extracted (step 218), and the extracted predetermined amount of body content may be provided to the user for each section (step 219).

The user receives a predetermined amount of the text content extracted as described above (step 220) and is provided with a search service for the text of the book. In addition, according to another embodiment of the present invention, the user selects the desired text content from the text content for each section provided as described above (step 221), and the book text search service providing system 900 is provided by the user. Related book information including the selected text content, that is, book name, author, publication date, publisher, price, etc., may be provided along with the text content of each section (step 222).                     

3 is a diagram illustrating a screen of a book text search result according to the first embodiment of the present invention.

The search result illustrated in FIG. 3 may appear when a user searches a book text by inputting a search term "philosophy". At the top of FIG. 3, the "Books" tab for book search may be configured in addition to the existing search targets such as integrated search, directory, web document, news, and knowledge search. It can be configured by dividing it into the "Book Text" tab and the "Book Information" tab where you can search for information on the book. The book text search result screen can display category, book title, passage, bibliographic information (author, publisher, publication date), etc. as display information, and when a user clicks on a book title, detailed information about the relevant book and the text content is displayed. You can go to the service page. In addition, clicking on the "View more book texts" tab takes you to the Book Texts tab, where the content of the searched book texts is more varied and more available. As shown in FIG. 3, when providing book text contents according to a search term “philosophy” input by a user, a search term “philosophy” included in the text contents may be highlighted and displayed in a predetermined manner.

4 is a flowchart showing the method of the second embodiment according to the method for providing a book text search service of the present invention.

In a method of providing a book text search service according to a second embodiment of the present invention, a user knows information related to a book such as a book name, a publisher, etc. of the book, and has received a result of searching the book once using the information. When requesting a text search service for the searched book, a text search service for the searched book is provided. In this case, the book text search service providing system 900 sorts and provides the searched section text contents in page order when a plurality of section text contents including a search word input by a user are searched among the text contents of the book. Provide the user with section-specific body content more clearly.

In the present embodiment, the book information recorded in the book information database 910 further includes page information associated with the text content for each section. Therefore, it is possible to know which page of the book is the content of each section.

When the book text search service providing system 900 inputs a book identifier and a predetermined search word from the user (steps 411 and 412), the book text search service system 900 first searches for book information including the book identifier with reference to the book information database 910. (Step 413).

When the book information is searched, the book text search service providing system 900 further searches for section text contents including the search word among the searched book information (step 414). In the case of a plurality of cases, the page information associated with the found body content of each section is retrieved (step 415). The book text search service providing system 900 sorts the text content for each section searched by page using the page information searched as described above (step 416). When the body content of each searched section is sorted and provided to the user according to page information, the pages may be sorted in a small order or the pages may be sorted in a large order.

In addition, according to another embodiment of the present invention, the text content of each section searched for a particular book may be arranged in the order of similarity with the search word, not the page order. In this case, the user may select the sorting method such as sorting by page or by similarity.

As described above, the similarity may be measured through the number of the search terms included in the body content of each section or the frequency of the search word for the ratio of the words included in the body contents of the section. . That is, the book text search service providing system 900 determines that the text content for each section including arithmetic or proportionally many search terms among the searched text contents for each section is highly related to the search word, and has a high similarity. The text content of each section may be sorted and provided to the user in a low order or a low order.

In addition, as another method of measuring similarity, the book text search service providing system 900 may include the search term and the section when the searched text content of each section includes book contents information such as a chapter title of the book. It may be determined that the similarity of the star text is higher, and the text content corresponding to the beginning of the chapter may be provided to the user.

The book text retrieval service providing system 900 provides the user with the section-specific text contents for each section, arranged as described above, in steps 416 and 417.

At this time, according to another embodiment of the present invention, the book text search service providing system 900 includes a predetermined amount (eg, two lines before and after including the search word) including a search word input by a user from the searched text content. By extracting the content of the body text, such as 50 characters before and after including the search word, only the extracted content of the predetermined amount of text may be provided to the user for each section.

In addition, according to another embodiment of the present invention, the user selects the desired text content from the text content for each section provided as described above (step 419), and the book text search service providing system 900 is provided by the user. Related book information including the selected text content, that is, information such as book name, author, publication date, publisher, price, etc. may be provided together with the text content of each section (step 420).

FIG. 5 is a diagram illustrating a screen of a book text search result according to the second embodiment of the present invention shown in FIG. 4. According to the present exemplary embodiment, as shown in FIG. 5, the contents of each section may be provided as a search result in order of a plurality of sections.

As shown in FIG. 5, when a book name "mechanical unconscious", that is, a book identifier and a search term "human pipe", is input together with a text content search request from a user, the book body search system includes a book identifier "mechanical unconscious". The book information is retrieved, and the body content for each section including the book information is extracted from the book information database 910 to provide the user with the body content for each section in a sorting order referring to page information or similarity. In this case, the search term "human tube" input by the user in the body content for each section provided to the user may be highlighted and displayed by a predetermined method. In addition, the table of contents area may provide information about where the book body information occupies the book, and the table of contents may be provided using part, chapter, and section information of the book information. Can be configured. In addition, bibliographies such as book names, authors, translators, and publishers may be provided using the "View More Book Information" tab, and the user may provide a convenient book purchase service by providing purchase information for the searched books. Therefore, the user can expect an effect that can induce the purchase of books.

6 is a flowchart showing the method of the third embodiment according to the method for providing a book text search service of the present invention.

The method for providing a book text search service according to the second embodiment of the present invention may provide a text search service for books belonging to a predetermined category, or, conversely, a text search service for books not belonging to a predetermined category. At this time, when providing a text search service for books that do not belong to the predetermined category selected by the user, this category is expressed as "excluded category".

In addition, in the present embodiment, the book information stored in the book information database 910 further includes a category. Thus, when the book text search service providing system 900 refers to the book information database 910, the book information is added to the book information. The category to which the book identified by the included book identifier belongs is known.

 In this embodiment, the user enters a category that the book containing the information he / she wants to belong to, along with the search term (step 611). The book text search service providing system 900 receives a search request including the category and the search word (step 612), and searches book information including the category by referring to the book information database 910 (step). (613)).

When book information is searched for in step 613, the book text search service providing system 900 searches for each section of body content including a search word input by the user among the searched book information (step 614). The book text search service providing system 900 provides the searched section-specific body contents to the user section by section (615), and the user receives the section-specific body contents (step (614). 616)) A part of the body content including the search word among the books belonging to the category, that is, the body content of each section is provided.

In addition, according to another embodiment of the present invention, the book text search service providing system 900 may extract and provide only some text contents including the search word among the searched section text contents and provide the same to the user.

In this case, according to another embodiment of the present invention, the user may select the desired body content for each section from among the body content for each section provided as described above (step 617). With respect to the text content for each section selected by the user, the book text search service providing system 900 may provide all of the text content for each section provided to the user so that more text content may be provided to the user.

In addition, the book text search service providing system 900 provides library related information such as book titles, authors, publication dates, publishers, and prices, along with the text content for each section, in relation to the text content for each selected section. It may be done (step 618).

In addition, in providing the body content for each section of step 615, the degree of relevance according to the first embodiment of the present invention may be calculated to prevent a plurality of section body contents for the same book from being displayed as a search result. have.

7 is a flowchart showing a method of the fourth embodiment according to the method for providing a book text search service according to the present invention.

In the present embodiment, the user may select the exclusion category and request a text search only for books that do not belong to the exclusion category.

According to the method of providing a book text search service according to the fourth embodiment of the present invention, when a user inputs an exclusion category and a search word (step 711), the book text search system requests a search request including the exclusion category and the search word. Received (step 712), the book information database 910 is searched for book information not including the exclusion category (step 713).

When book information is searched for in step 713 and book information on books belonging to a category other than the excluded category is searched, the book body search service providing system 900 includes a search word input by the user among the book information. The body content of each section is searched (step 714). The book text search service providing system 900 provides the user with the text content for each section found in step 714 (step 715), and the user receives the text content for each section (step 716). The text search service is provided only for books that do not belong to a predetermined category (excluded category).

For example, if a user wants to obtain predetermined information by searching the text content of a book, even though it is obvious that the book containing the information does not belong to category A, the text content of the book belonging to category A is searched a lot. If it is difficult to find the desired information, a text search may be requested using the category A as a negative category.

Meanwhile, steps 617 and 618 correspond to steps 419 and 420 in the above-described embodiment, respectively, and thus detailed description thereof will be omitted.

8 is a diagram illustrating a screen of a book text search result according to the third and fourth embodiments of the present invention.

As illustrated in FIG. 8, when a user searches for a book text by inputting a search term "literature" and a search term "philosophy" according to the third embodiment, the book text search system includes book information including the category "literature". Searches the body content for each section associated with, and further searches for the body content including the search term "philosophy" among the body content for each section and provides the user for each section. In this case, the term "philosophy" input by the user may be displayed by highlighting in a predetermined manner.

In addition, as illustrated in FIG. 8, the user may search for body content for each section including a search term “philosophy” in a category other than the “literacy” category. The user may perform a "literature" exclusion category search on the book text search initial screen, perform a "literature" category search, review the book text search results, and further perform a "literacy" exclusion category search. .

9 is a block diagram illustrating a configuration of a book text search service providing system capable of providing a book text search service according to the present invention.                     

The book text search service providing system 900 of the present invention may include a book identifier for identifying a book or a book information database 910 for storing book information including a section content of the book, and a search term from a user. And a user interface providing means providing unit 920 for providing a section of text contents searched according to the search term to the user, and a search unit 930 for searching text contents including the search term by referring to the book information database. It is configured to include.

The book information stored in the book information database 910 may further include page information associated with the body content as well as a book identifier or a section-specific body content, and may further include a category associated with the book identifier.

In addition, the search unit 930 may include a function for calculating a degree of relevance of the search word and the book information for each section according to the first or second embodiment of the present invention, and is input by a user from the searched text contents for each section. It may include a function for extracting only a predetermined amount of body content including a search word.

Embodiments of the invention also include computer-readable media containing program instructions for performing various computer-implemented operations. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. The medium or program instructions may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. The medium may be a transmission medium such as an optical or metal wire, a waveguide, or the like including a carrier wave for transmitting a signal specifying a program command, a data structure, or the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like.

10 is an internal block diagram of a general-purpose computer system that can be employed to construct a book text search service providing system according to the present invention.

Computer system 1000 includes one or more processors 1001 connected to a main memory including random access memory (RAM) 1002 and read only memory (ROM) 1003. The processor 1001 is also called a central processing unit (CPU). As is well known in the art, the ROM 1003 serves to transfer data and instructions to the CPU unidirectionally, and the RAM 1002 typically transfers data and instructions bidirectionally. Used to. RAM 1002 and ROM 1003 may include any suitable form of computer readable media. Mass storage 1004 is bidirectionally coupled to processor 1001 to provide additional data storage capability and may be any of the computer readable recording media described above. The mass storage device 1004 is used to store programs, data, and the like, and is a secondary memory device such as a hard disk which is generally slower than the main memory device. Certain mass storage devices, such as CD ROM 1006, may also be used. The processor 1001 may include one or more input / output interfaces, such as a video monitor, trackball, mouse, keyboard, microphone, touchscreen display, card reader, magnetic or paper tape reader, voice or handwriting reader, joystick, or other known computer input / output device. Connected to 1005. Finally, the processor 1001 may be connected to a wired or wireless communication network through the network interface 1007. Through this network connection, the procedure of the method described above can be performed. The apparatus and tools described above are well known to those skilled in the computer hardware and software arts.

The hardware device described above may be configured to operate as one or more software modules to perform the operations of the present invention.

According to the present invention, by converting the text content of the book into an electronic document such as an XML document, storing the book text database for each section, and providing the user with a text search service for the text content of the book in addition to the title or table of contents field, Provided are a method and a system for providing a book text search service that can search a desired book in detail in a broader range.

In addition, according to the present invention, there is provided a method and system for providing a book text search service which can provide text content including a search word selected by a user among entire text contents of a predetermined book as a search result.

In particular, by dividing and storing the body content for each section, and by using the section as a search unit to determine the relevance to the search terms entered by the user for each section to provide the body content corresponding to the more relevant section, etc. A method and system for providing a text search service capable of providing various services may be provided.

In addition, according to the present invention, when a plurality of text contents for each section is searched, the text contents for each section are sorted according to various criteria and provided to the user, thereby providing a text search service that enables the user to recognize the search results more easily. Methods and systems are provided.

In addition, the present invention provides a text search service only for books belonging to a predetermined category or not belonging to a predetermined category.

In addition, according to the present invention, by providing the book text search of the present invention in the integrated search site of the Internet, the text search service of the book can be easily accessed, and by displaying the purchase information of the book together with the searched text content, Provided are a method and a system for providing a book text search service for promoting a desire to purchase a book.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above-described embodiments, which can be variously modified and modified by those skilled in the art to which the present invention pertains. Modifications are possible. Accordingly, the spirit of the present invention should be understood only by the claims set forth below, and all equivalent or equivalent modifications thereof will belong to the scope of the present invention.

Claims (1)

In the book search service providing method using the Internet, Maintaining a book database storing book name information for identifying books; Receiving a search word from a user; Searching book name information including the search term by referring to the book database; And Providing the related book information corresponding to the retrieved book name information to the user Book search service providing method comprising a.

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