Combined with the major, briefly describe how to obtain information and what kind of knowledge search platform and tools to use.

In this information age with the rapid development of the Internet, information has widely penetrated into various disciplines of science and technology, culture, economy and all aspects of human life. Like Samuel, an English writer and lexicographer in the18th century? Johnson said: "there are two kinds of knowledge, one is what we know ourselves;" The other is that we know where to find it. [1] "With the rapid development of the Internet, there are a lot of mixed information on the Internet. It has become an indispensable basic skill for contemporary college students to obtain useful information related to their own needs quickly, effectively and economically. First, the concept of information retrieval The word information retrieval was put forward by galvin at the 1949 International Mathematical Conference. Muir first proposed that it can be subdivided into generalized information retrieval and narrow information retrieval. Information retrieval in a broad sense refers to the process of organizing and storing information in a certain way, and identifying and obtaining the required information according to the needs of information users. It consists of two processes of information storage and retrieval, so it is also called "information storage and retrieval". In a narrow sense, information retrieval only refers to the search for needed information, but does not include the storage of information, which is commonly called "information search" [2]. Second, the current situation of college students' information retrieval ability (1) College students' information awareness is weak. Nowadays, college students basically have a computer, but their use of the Internet is generally limited to entertainment, such as online games, online communication, entertainment gossip, music videos and so on. There are fewer and fewer college students who use the Internet to find information resources, and even fewer college students use search engines to find information. Most college students lack the demand and awareness of actively collecting professional information. Many of them only look for and use information in order to complete the learning tasks assigned by teachers, and rarely search for information in order to improve their knowledge. Moreover, many college students lack sensitive response to information and know little about academic information sources related to their majors. Therefore, in the information society, it is more and more important to cultivate college students' information sensitivity. (2) College students' information ability is low. Nowadays, the network information resources are very rich, and the ways for college students to obtain information are also diversified. Most students have simple information retrieval ability, which can meet the basic demand for information to some extent. However, in the face of massive information, when more professional and accurate data information is needed, some college students will not be able to collect enough information because of their poor retrieval ability. The concrete manifestations are: I don't know how to use the digital resources, search engines and open available resources of the school to query the required information; I don't know how to filter the collected information, which easily leads to bloated information; Lack of ability to distinguish information, unable to distinguish the applicability of information, leading to improper use of information; Insufficient information innovation ability and so on. (3) College students lack information morality. Information morality refers to the general name of information behavior used to regulate various social relations in information activities, including moral consciousness, moral norms and moral behavior. Relevant surveys show that some college students can't effectively resist bad information and illegal activities, download files maliciously, spread virus files, browse bad websites, and even make personal attacks on others through the Internet, and they are never tired of it and don't think about repentance. These behaviors reflect the current situation that college students' awareness of using information norms is not strong, so it is urgent to cultivate college students' information moral literacy. Third, measures to improve college students' information retrieval ability (1) to enhance college students' information retrieval awareness. Information retrieval consciousness is the consciousness of consciously obtaining the information you need. Only when college students have a strong sense of information retrieval can they actively capture, judge and use information when solving problems. Students with high information awareness usually pay attention to cultivating their ability to use information and improve the efficiency of information retrieval over time. Therefore, it is necessary to improve the information retrieval awareness of college students. Colleges and universities can adopt various methods to cultivate college students' information retrieval consciousness according to local conditions. For example, university libraries carry out library entry education activities for freshmen, and through a series of measures, such as issuing library manuals, showing freshmen around the library, and asking librarians to explain how to use the collection resources, freshmen can deepen their understanding of the library, so that they can understand the ways for university libraries to obtain information. Organize information retrieval lectures and exchange meetings on a regular basis to let college students know the latest development of information, cultivate their interest in information knowledge, and promote college students to establish a scientific and complete information consciousness; Teachers or experienced librarians majoring in information management are often invited to explain to students of various departments how to use retrieval systems efficiently, such as SCI, EI, ISTP, ISR and other commonly used retrieval systems. (2) Offering literature retrieval courses Colleges and universities offer literature retrieval courses. By introducing the basic knowledge of information retrieval, patent literature retrieval, data and fact retrieval, Chinese and foreign databases, network information resources retrieval and so on. To improve students' awareness of information retrieval and enable them to master the skills of obtaining and using documents. This is an important link to cultivate students' information retrieval ability. We should pay attention to the following two problems when offering the course of document retrieval: First, make the course of document retrieval a compulsory course as far as possible, so as to avoid the situation that some students can't look at the course of document retrieval objectively, but think that the knowledge and skills of document information retrieval are not effective for their future development, so that their attitude is relaxed and they ignore the study of information retrieval; Secondly, the content and key points of literature retrieval course should be constantly updated. In addition to introducing the basic knowledge of traditional manual retrieval, such as description format, indexing method and retrieval tools, we should also increase the basic knowledge of network and computer and the content of network information retrieval to meet the development requirements of modern information network environment. (3) Improve the construction of information retrieval facilities Colleges and universities can set up special funds to improve the construction of information retrieval hardware, and provide a strong guarantee for the construction of information retrieval ability of college students. For example, update old equipment, buy advanced terminal computers, increase investment in electronic reading rooms and multimedia classrooms, and provide places for college students to apply their knowledge so that they can use these advanced facilities to improve their information retrieval ability; At present, most colleges and universities in China have established computer campus networks, and we should give full play to its functions. For example, schools can buy some retrieval tools and database systems, which can not only enable students to obtain the required data resources and various literature information resources for free through the campus network, but also build a good platform for college students' information retrieval practice. (D) to carry out a variety of information practice activities college students to participate in appropriate information practice activities, apply what they have learned, in order to effectively improve their information retrieval ability. Colleges and universities should hold a variety of information practice activities regularly, so that college students can easily improve their practical operation ability in the atmosphere of entertainment and leisure. Activities such as information knowledge contest and information exchange week can be held on campus, so that students can get the satisfaction of analyzing, identifying and even comprehensively utilizing a large amount of information on the basis of mastering the original information retrieval knowledge and skills; We can also let college students participate in scientific research activities, and let them combine their information theory knowledge with scientific research activities, which can not only improve their practical ability, but also greatly enhance their scientific research ability; Third, we can organize college students to participate in the information sorting work of the library as volunteers, and gradually improve their information retrieval ability through continuous practice. Conclusion In this era of information explosion, colleges and universities should pay attention to teaching information retrieval knowledge to college students, stimulate and enhance their information awareness, provide the greatest convenience for improving their information retrieval ability, and carry out information literacy education for college students to the end. As college students in the 2 1 century, they also need to put the improvement of information literacy on the agenda, lay a solid foundation and cultivate meta-elements, as a solid backing for cultivating autonomous learning ability. In a word, it is urgent to cultivate information retrieval ability.