Search topic
Research Status of Personalized Service in Digital Library
Second, theme analysis.
With the rapid development of digital library construction and network communication technology, there are more and more digital resources, but the possibility for people to obtain the needed resources is getting smaller and smaller. The specialization and verticalization of users' needs have intensified the contradiction between a large number of information databases in digital libraries and users' needs. During the period of 1999, the famous digital library experts of American Library and Information Technology Association (LITA) 10 listed personalized customization service as the first of the seven trends of digital library development. At present, the personalized information service of digital library has begun to get universal attention, and people are trying to provide personalized information service. Personalized service of digital library is a research direction that has attracted much attention in digital library research in recent years. Personalized service of digital library is a service that provides users with information content and system functions that meet their personalized needs according to their information usage behavior, habits, preferences, characteristics and specific needs.
On the research status of personalized service in digital library, this topic involves:
(1) What are the introductions of personalized service of digital library?
(2) What are the modes of personalized service of digital library?
(3) What are the technical researches on personalized service of digital library?
(4) The latest development of personalized service research in digital library (2005 -2007).
3. Search situation
retrieval device
1. VIP Chinese periodical database (1989-2007)
2. China periodical full-text database (1994-2007)
(2) the retrieval process
1. Search method
Keywords title keywords
Step 2 search for words
Key words or titles and subject words of digital library
Personalized service keywords or titles and keywords
3. Search strategy
(1) VIP Chinese periodical database
(Title or keyword = digital library) * (Title or keyword = personalized service)
Select the title or keyword field in the advanced search, and enter two search terms: "digital library" and "personalized service" to define. The year is limited to 2005-2007, and 78 records were retrieved.
(2) China periodical full-text database.
(Title or keyword = digital library) * (Title or keyword = digital library)
Select a title field in the advanced search, enter "Digital Library" and "Personalized Service", the year is limited to 2005-2007, and * * * found 89 records.
Search result analysis
(1) search results
After searching the above two databases, there are many research papers on personalized service of digital library, and now the representative ones with non-repetitive research topics are selected.
1. China periodical full-text database.
(1) Research on Personalized Information Service System of Digital Library Liu Yanping Library and Information Work 2006/S2
(2) Classification System of Personalized Service System of Digital Library, Ye Hong Science and Technology Information (Academic Research)No. 13, 2007.
(3) Analyze intelligent search engine technology and its application in personalized information service of digital library.
(4) Application of data mining technology in personalized service of digital library Zhu Bingbing, Science and Technology Information Development and Economy, No.24, 2006.
(5) Research on the Development of Personalized Information Service in Digital Library, Journal of Zhengzhou University (Philosophy and Social Sciences Edition), 06, 2006.
(6) Application of Intelligent Push Technology in Personalized Service of Digital Library "Shiyan Information Exploration" (1 1, 2006)
(7) Personalized service technology of digital library based on text filtering Zhang Fan Computer Engineering and Application, 3 1, 2006.
(8) Personalized service mode of digital library information portal He Ping China Information Herald, 08, 2006.
(9) Personalized service of digital library under network information technology: Teaching in Zhang Dan Forest Region, 07, 2006.
(10) mylibrary-the new trend of personalized service in digital library. Huayang Agricultural Library and Journal of Information Science, 08, 2006.
(1 1) Construction of Personalized Dynamic Customization Service of Digital Library Based on Web Service Composition Journal of Zhang Xiaoqing China Science and Technology Information Society 2006 03.
(12) Realization of Personalized Service of Digital Library on Campus Network Zhu Jiangfeng Science and Technology Economic Market 0 1, 2006
(13) Personalized Push Service of Digital Library Journal of Bai Xuesong Library 2005 09.
(14) Application of Web Log Mining in Personalized Service of Digital Library Wang Yingpei Science and Technology Information Development and Economy 22, 2005.
(15) A comparative study on the functions and characteristics of personalized information service systems in digital libraries at home and abroad; Zhang Jun Information Theory and Practice, 06, 2005.
(16) Research on Personalized Service Mechanism of Digital Library Based on Knowledge Management Journal of Sichuan Library, 05, 2004
2. VIP Chinese periodical database
(17) Research on Personalization Technology of Digital Library Based on Web Mining Rebecca Zhangfan Journal of Information, 2007, 1.
(18) Personalized Service Technology of Digital Library Based on Text Filtering Zhang Fan Yang Bingru Computer Engineering and Application 2006 3 1
(19) personalized service mode of digital library information portal He Youzhi China Information Herald, No.8, 2006
(20) Discussion on the Solutions for the Depth and Width of Personalized Service, Liu Yuesheng Digital Library Forum, 6 issues in 2006.
(2 1) personal digital library model analysis stone and modern information, No.9, 2005
(22) Digital Library Personalized Information Environment and Service Construction Du Anping Journal of Shaoguan University, No.3, 2005
(23) The technical realization of personalized information service of digital library Zhang Yun Jin Xu Agricultural Books journal of the china society for scientific and technical information, 2005, 6.
(24) Model research and strategy analysis of personalized information service Du Chunguang's Journal of National Library, No.2, 2005.
(2) Search conclusion
The first document discusses the meaning of personalized information service, expounds the favorable conditions for digital library to carry out personalized information service, the related research and development status of libraries at home and abroad, analyzes the application examples of domestic digital library personalized information service system, analyzes its workflow and main functions, points out the problems existing in the system, and puts forward some improvement countermeasures.
Literature 2 discusses the classification system of personalized service system of digital library. Firstly, it briefly introduces the main contents of the personalized service system of digital library, including its definition and service content. Secondly, this paper expounds the problems existing in the personalized service system of digital library from two aspects: user classification and information classification. There are two main problems in user classification, and corresponding suggestions are put forward according to the characteristics of users. This paper discusses the information classification from five aspects, lists the pages of the personalized service system of digital library for analysis, and puts forward some solutions.
Literature 3 introduces the essence and development direction of intelligent information retrieval, which is the continuous improvement and wide application of intelligent search engine technology. It is the practical need of digital library information service to build a personalized service system of digital library based on this technology. This paper discusses the shortcomings of the current search engine, sums up the principles, mechanisms and advantages of the intelligent search engine, and probes into the application of this technology in the personalized service of digital library.
The fourth document expounds the definition of digital library, introduces the working principle of personalized service and the present situation of personalized service system at home and abroad, probes into the principles of classification model, correlation model, sequence model, clustering model, regression model and time series model, and puts forward some suggestions on how to describe the user's needs in the personalized service of digital library.
The fifth document introduces that the personalized information service of digital library is an important trend of library development today. At present, there are mature personalized information service systems in digital libraries at home and abroad, with various service modes and functions, but the task of exploring effective modes of personalized information service in libraries is still very arduous.
Literature 6 introduces the contents of intelligent push technology and personalized service, and probes into the application of intelligent push technology in personalized service of digital library, as well as the advantages and disadvantages of intelligent push technology.
Document 7 provides text filtering technology for personalized service strategy of digital library. By establishing user interest model and text content feature model in vector space, after calculating their similarity, the text that users are not interested in is filtered out. The specific modeling process and personalized text filtering algorithm are described in detail, and finally the verification results in the actual digital library project are given.
Literature 8 attempts to study the personalized service mode under the information portal of digital library, and discusses the effective mode and development trend of personalized service of digital library from the service modes of two-way interactive information service, comprehensive information retrieval service, dynamic collection characteristic information service, penetrating vertical information portal service and tracking data mining information service.
Literature 9 briefly introduces the connotation of digital library's personalized service, analyzes the support of network information technology to its service, and takes our library as an example to discuss the integrated application of these specific technologies, so as to provide reference for constructing an interoperable digital library's personalized service system.
The document 10 briefly discusses the emergence, concept, types, characteristics, principles and functions of my library, introduces the development status at home and abroad, and points out the future development direction.
The document 1 1 introduces that Web service composition is a Web service technology, which dynamically builds new complex Web services that can meet the needs of users by using existing Web services. By describing various resource components, application components, functional components and management components of digital libraries with Web services, people can use Web service composition technology to realize the dynamic integration of various components of different digital libraries according to the individual needs of users, thus realizing the personalized dynamic customization service of digital libraries in an open environment. This paper discusses the basic architecture and construction model of personalized dynamic customization service of digital library based on Web service composition, and discusses some problems needing attention in the construction process.
12 document introduces that the construction of digital library is the inevitable development of book informatization, and personalized service can provide practical services according to the different characteristics of users and better serve readers. This paper discusses the personalized service of digital library, analyzes the key technologies to realize it, and gives some core codes.
Document 13 introduces that personalized push service is a hot topic in digital library research and one of the key problems in building digital library. This paper puts forward corresponding implementation schemes for different information forms, and briefly discusses several difficult problems in actual operation.
Document 14 introduces the basic concept and process of Web log mining, and points out that by mining the log information left by readers in digital library service, personalized service can be realized to better meet the needs of different types of readers.
Literature XV starts with the concept of personalized information service, introduces several types of personalized information service, including classified customization service, information push service, intelligent agent service and vertical portal service, and introduces some typical application examples of personalized information service that have been carried out by some libraries at home and abroad. On this basis, the functions and characteristics of these personalized information service systems are summarized and compared.
16, building an information service system based on information filtering technology is an effective means for digital libraries to realize personalized information services. By studying the concept of information filtering technology and comparing it with the concept of information retrieval, the general model of this kind of system is abstracted, and the effect of information filtering is evaluated by recall and precision. Finally, the key technologies to realize personalized information service system are analyzed.
Document 17 puts forward a personalized implementation strategy based on Web mining technology, and improves the classical document algorithm of digital library resources, and establishes dynamic user interest feature models from Web content mining, structure mining and log mining respectively, making it more practical and targeted.
18 document puts forward that in the application of digital library, personalized service can provide users with retrieval results that meet their interests. This paper provides a text filtering technology for the personalized service strategy of digital library. By establishing user interest model and text content feature model in vector space, after calculating their similarity, the text that users are not interested in is filtered out. The specific modeling process and personalized text filtering algorithm are described in detail, and finally the verification results in the actual digital library project are given.
Document 19 attempts to study the personalized service mode under the information portal of digital library, and discusses the effective mode and development trend of personalized service of digital library from the service modes of two-way interactive information service, integrated information retrieval service, dynamic collection characteristic information service, penetrating vertical information portal service and tracking data mining information service.
The personalized service of digital library proposed in reference 20 determines that it will develop into subject library and alliance system on the basis of network technology, so as to improve the utilization rate of resources and solve the depth and breadth of personalized service.
Document 2 1 According to the different storage locations of document information resources in personal digital libraries, personal digital libraries are divided into two modes: remote personal digital libraries and local personal digital libraries, and the functional characteristics of these two modes are emphatically compared and analyzed.
Document No.22 proposes to build personalized information service of digital library, which is actually to realize personalized information, personalized retrieval, personalized filtering and personalized service in digital library. Digital library can provide various personalized information services such as personal library, retrieval help, personalized information consultation, information agency, vertical portal, etc.
Document No.23 expounds the concept, research and application status of personalized information service in digital library, and analyzes the technologies needed by digital library to realize personalized information service.
Document No.24 emphasizes that personalized information service has its specific definition in digital library, which is also the inevitable development of digital library. According to the different contents of library information service and users' behaviors under the network environment, there can be a variety of personalized service modes to carry out services strategically.
(3) result analysis
From the papers on personalized service of library science published in 2005-2007, we can see that the research topics and directions mainly focus on the following aspects:
1. Research on personalized service concept of digital library. Of the 89 articles retrieved from the full-text database of China journals, 40 are about the concept of personalized service in libraries. In these articles, the author has his own understanding of the concept of personalized service in digital library, and the research on this concept is getting deeper and deeper.
2. Research on personalized service mode of digital library. The personalized information service mode of digital library is also explored in practice. At present, there are the following ways: (1) information classification customization service. Sub-customization means that information users can set their own information resource types and forms of expression in specific system functions and service forms according to their own purposes and needs, and choose specific system service functions. (2) Information push service mode. It is a personalized active information service mode realized by push technology. (3) Information intelligent agent service mode. It is a computer system that can complete entrusted tasks, and can imitate human behavior to perform certain tasks with little or no user intervention and guidance. By tracking users' activities in the information space, users' interests and hobbies can be automatically captured, and information that may arouse users' interest can be actively searched and provided to users. (4) Information vertical portal service mode. By collecting specific subject information resources on the Internet, and mining and processing them, users' professional-based in-depth information needs can be met. (5) Information help retrieval service mode. How to help users carry out efficient information retrieval is also an important content of the in-depth development of digital library information services. (6) Data mining service mode. Mining people's interesting, implicit and potential knowledge from the database aims to help users discover the potential association between data. (7) Information call center service mode. Mainly use telephone, fax and other ways to serve customers and handle simple call flow.
Among them, the popular personal library (My library) is a concrete application of the above personalized service mode, a mature personalized service mode system of libraries at present, and a completely personalized private information space.
3. Research on key technologies of personalized service in digital library. The application technology of personalized information service in digital library is the combination of modern information technology. It includes push technology, intelligent agent technology, intelligent search engine technology, web page dynamic generation technology, data mining technology, information filtering technology, process tracking technology, security identity authentication technology, data encryption technology and so on. To provide technical support for the personalized service mode of digital library.
4. Research on the current situation of personalized service of digital libraries at home and abroad. There are also some papers that mainly introduce the current situation of personalized service of digital libraries at home and abroad, and guide the personalized service of digital libraries in China by introducing these advanced technologies and models.
5. Other research. In addition to the concept, mode and technology of digital library personalized information service and the research status at home and abroad, the research on digital library personalized information service also deeply discusses the mode construction, user evaluation, librarian role change, existing problems and countermeasures.
To sum up, the research on personalized service of digital library in China in recent two years has been fruitful. With the deepening of theoretical research and practice of digital library personalized information service, the personalized information service of digital library in China will truly realize user-centered and different levels and types of effective information services that use digital library information resources to meet users' personalized needs.
5. Summary of retrieval situation
Because the course of digital library was offered this semester, I have some simple knowledge about digital library, especially the content of personalized information service, which is less involved in the teaching materials, so I take this content as the retrieval theme. When choosing the retrieval tools, I chose the two most commonly used retrieval tools. Originally, I chose Google in Chinese, trying to find the projects or websites that are studying this topic in China, but the content of the retrieval is too large, and a large number of results are papers from various databases, so I finally gave up using the search engine.
When constructing the retrieval strategy, because the theme is relatively simple, we chose "digital library" and "personalized service" as key words, and began to think about whether we need to use "electronic library" or "virtual library" similar to the concept of "digital library". However, considering that the concept of "digital library" has been uniformly used in China, few articles use the other two words for retrieval. Select keywords, titles and subject words as retrieval methods. At first, 423 records were retrieved by using keywords in the full-text database of China journals. However, many articles were not related to the theme, so the title was used as the retrieval approach, so the two words were limited to the title of the article at the same time, which had a high correlation, but it may also lead to missed detection. Since learning the retrieval course, I feel that the most difficult thing in retrieval is the construction of retrieval table. The quality of retrieval form is directly related to the quality of retrieval results. The field provided by VIP has a title or keyword field. Using advanced retrieval to limit both search terms to this field, the retrieved results are relatively accurate. After retrieval, the next task is to analyze the retrieval results, which is actually a very difficult task. It's not a simple thing to read a few 150 articles. Summaries and article titles are very useful at this time. Generally, you can know a little about the abstract, and you need to know the details before opening the full text. Summarize the main content and direction of the research from the article, find out the more distinctive and non-repetitive content, and finally sort out the conclusion. This is my whole difficult but interesting retrieval process.
Through the completion of this assignment, the first thing is to review and consolidate the previous knowledge. Although retrieval is often carried out at ordinary times, there are not many strict retrieval steps, and there is no such arrangement in the whole retrieval process. It is carried out step by step according to the plan until the retrieval results are completed. Secondly, I used to do my homework in order to complete the specific tasks assigned by the teacher. Some topics are relatively simple or interesting, while some abstruse topics are hard to find. Without professional background, I feel very confused when I get the search results of the topic. This time, the teacher asked us to choose our own topics, and let me start with my own interests and fields I want to know, so that the process of completing my homework is no longer so boring, and my interest is naturally much greater. Most importantly, the purpose of doing homework is not only to complete homework, but also to gain something, which consolidates the retrieval knowledge. Needless to say, by reading a lot of articles this time, I have a general understanding and understanding of the retrieved topics, which has increased my knowledge and broadened my horizons. However, I have gained a lot by completing this retrieval operation.