At present, there are different opinions about the specific connotation of the concept of big data. Zhucloud's team of analysts believes that big data is a large amount of semi-structured and structured data generated by a company during its operation, which will consume a lot of money and time when it enters the database for analysis.
1 Interpretation of the era of big data
1. 1 Big Data For the processing of big data, it is necessary to develop a new processing and analysis mode to realize its decision-making, insight and analysis capabilities. According to McKinsey's report, big data refers to data beyond the acquisition, management and analysis capabilities of traditional data software. The user information and network behaviors that many network companies have to process and analyze every day have far exceeded the unit of measurement of G or T. The units used to measure big data are at least P, E, Z, 1.2. With the progress of science and technology, the characteristics of big data are constantly strengthened and constantly changing. I read the relevant materials and tend to summarize the characteristics of big data given by IDC (Internet Data Center): large amount of data, fast data flow, dynamic data speed, diverse data types and huge data value [1]. Mankind is in a rapidly developing information age, and the scale of all kinds of data and information is very large every day. More and more data appear, which brings difficulties to data processing, analysis and storage.
1.3 Application of big data Big data can be said to be the source of development in all walks of life. The interpretation, analysis and research of big data and the excavation of its value will benefit the development of all walks of life. Libraries should also fully tap the value of big data in the era of big data, improve the value of library data resources, and provide better information services by using the concepts, methods and means of big data [2]. 1.4 The degree of informatization and digitization of foreign digital libraries can represent a country's economic strength and scientific and technological level to a certain extent. The construction of foreign digital libraries has the characteristics of informationization, networking and humanization, which provides a high-tech digital platform for people to enjoy information resources, can show a country's scientific and technological strength and cultural heritage, and highlights the essence of science and technology serving people. The construction of digital libraries abroad can be constantly innovated, pursuing new things and advanced ideas, and pursuing high-quality construction achievements, and has been striving for perfection. In addition, the construction of digital libraries abroad pays more attention to resource conservation and environmental protection.
2 advantages of digital library construction
At present, great progress has been made in the construction of digital libraries in China, mainly in the following aspects. 2. 1 Real-time push of personalized information With the progress of network technology, the change of users' needs and the richness of library resources, digital libraries can build a large-scale public service platform for resources. Based on this platform, library collection, personnel management and user service can be integrated, and various effective service information can be pushed in a timely and personalized manner according to the dynamic data information of users on the public platform. 2.2 The establishment of knowledge consultation platform The construction of digital library is conducive to regional integration and provides services for users' knowledge consultation. 2.3 Advantages of processing resources and information As a public service platform, the construction of digital library provides a foundation for digital processing of data resources, integration of various resources, transmission of multimedia information, promotion and retrieval of information.
Three Problems in the Construction of Digital Library
For the problems existing in the construction of digital library, the author mainly analyzes them from the internal and external perspectives. The specific questions are as follows. 3. 1 The resource structure is unreasonable, and the information resources of domestic entity libraries overlap seriously, without paying attention to the long-term preservation of resources. At present, the digital library under construction in our country can't obtain effective user demand information in real time and accurately, and the concept of collection is conservative, and the important role of data is not correctly recognized, which seriously restricts the construction of digital library in our country.
3.2 Problems of external factors First of all, bandwidth resources are not sufficient. According to the survey, although China's broadband has been popularized and greatly improved in recent years, there is still a big gap between the network speed and the global average network speed. The lack of bandwidth resources has obviously hindered the construction of digital libraries. Secondly, the library is in a "closed" state. There are "data islands" between libraries and systems, which restrict the improvement of public service level and the enjoyment and utilization of resources to a certain extent, and hinder the development and construction of digital libraries. Finally, in the construction of digital library, the processing and analysis of unstructured static and dynamic data information are not detailed enough, and the proportion of pay and return is not recognized [3].
4. Some thoughts on the construction and development of digital library
Facing the internal and external problems existing in library construction, the author thinks that we should mainly start from the following aspects. First of all, it is necessary to increase capital investment, which is the basis of digitalization of library construction; Secondly, the management of information resources, which is the key factor to realize the digital management of information resources; Thirdly, human resource management, which is the key factor in the construction of digital library; Finally, the improvement of technical level is the guarantee of digital library construction.
4. 1 Increase capital investment 4. 1. 1 Improve hardware quality. Advanced and high-quality library equipment is an important link to realize digital construction and a guarantee for the success of digital construction. At present, the instruments and equipment needed for the digital construction of libraries mainly include various servers, calculators for browsing, searching and reading, and CD towers and CD libraries for storing and processing a large amount of information. 4. 1.2 Digitization of information resources mainly refers to the digitalization of various electronic publications, network databases, collections and network databases. All these require capital investment.
4.2 Digitization of information resources The digitization of information resources mainly includes two parts: the digitization of social information resources and the digitization of library information resources. 4.2. 1 Digitization of social information resources Digitization of social information resources mainly refers to the collection, integration, analysis and processing of all kinds of information already existing in society, and sharing and transmission through media platforms. Realize the digitalization of social information resources, vigorously develop resources on the network, track and filter information and provide it to readers. 4.2.2 Digitization of library information resources Digitization of library information resources is the core content of library digitalization, which mainly includes submission, organization, selection, optimization, planning and digitization of literature resources. The digital construction level of these projects will directly affect the digital construction level of libraries.
4.3 Realizing the digitalization of human resources is the key to the digitalization of the whole library. In order to realize the "man-machine combination", librarians, library professionals and people-oriented ideas require staff to use computer networks to serve readers [5]. Therefore, librarians should not only master the knowledge and skills of traditional library science, but also have a certain understanding of computer network technology and communication technology, and master some of them skillfully, and should also have broader knowledge and application ability. In addition, librarians should have corresponding professional qualities. 4.4 Digital Construction at the technical level The construction of digital libraries has high technical requirements. In the process of digital construction, we will design computer software development technology, image processing, text digitization, audio and video processing, remote technology, document storage, recovery, compression and other technologies, in addition to the digital construction of the library itself, including some personalized public relations service design and so on.
5 conclusion
The construction of digital library needs sufficient funds first; Secondly, the digital management of human resources and information resources is the focus of digital library construction; Network information technology is a necessary condition to ensure the construction of digital library.
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