Subjects: Library Science，Information Science >> Library Science submitted time 2023-10-12
Abstract： Objective To discuss how to apply decentralized key technologies to build a decentralized application model for future learning centers.
Methods Firstly, an overview of decentralized technologies and their research status in future learning centers was given. Then, a four-layer application model based on decentralized technologies and its working mechanisms were proposed, and an application scenario was simulated to demonstrate the workflow of model in privacy protection and efficient learning support.
Results A four-layer application model consisting of data, computing, contract and application layers was proposed, including the structure and working mechanism of each layer. The interaction between layers was clearly described through the simulated data flow of application scenarios.
Limitations The model design still needs further optimization. It also needs to study how to dock with existing learning systems.
Conclusion Decentralized technologies have broad application prospects in future learning centers. The proposed application model provides references for future research of learning centers, but also needs in-depth study and improvement.
Peer Review Status:
Awaiting Review
Subjects: Library Science，Information Science >> Library Science submitted time 2023-09-09
Abstract： This paper explores the construction objectives, design principles, functional modules, technical solutions, facility layout and resource allocation of the future learning center for small and medium-sized libraries under the background of the construction of new liberal arts, and proposes a future learning center construction scheme that conforms to the characteristics and needs of small and medium-sized libraries. On the one hand, this paper combines relevant theories and practices at home and abroad, analyzes and expounds the concept, characteristics, functions and value of the future learning center, and takes small and medium-sized libraries as the research object, proposes three core functional modules, as well as corresponding technical solutions and application scenarios; on the other hand, from two aspects of spatial facility layout and resource allocation, this paper puts forward specific implementation strategies for the future learning center of small and medium-sized libraries, providing reference and reference for the construction of the future learning center of small and medium-sized libraries. This paper believes that through the construction of the future learning center, small and medium-sized libraries can better adapt to the teaching reform and learning innovation under the background of the construction of new liberal arts, provide users with diversified, personalized and innovative learning services, and improve the service level and competitiveness of libraries.
Peer Review Status:Awaiting Review
Subjects: Library Science，Information Science >> Library Science submitted time 2023-08-27 Cooperative journals: 《图书情报工作》
Abstract： [Purpose/significance] Collaborative information seeking and retrieval is essentially a knowledge sharing process, describe its dynamic evolution process is the core issues of research.[Method/process] Epk is a potential discriminant function. In this paper, we took knowledge stock, knowledge structure and knowledge quality as variables, and constructed Epk to depict the participants' ability of knowledge sharing in the collaborative information seeking and retrieval; Then, we divided the collaborative group into two subgroups, which took Epk=50 as high and low potential threshold. We also discussed the influence factors of collaborative information seeking and retrieval from the following three aspects:collaborative participants' own factors and mutual influences, and influences of environment. Moreover,based on the above influence factors and game theory, we constructed a evolutionary game model of knowledge sharing in collaborative information seeking and retrieval. Finally, with the 2014 edition Matlab, we wrote the simulation programs, and performed multiple iterative simulations for evolutionary game model based on the given initial parameters.[Result/conclusion] The result shows that:the groups' strategies gradually tends to be stable after repeated game; the abilities of shared/learning knowledge and the ties in participants have positive impacts for knowledge sharing, and cost factors have negative effects for knowledge sharing; evolution game model converges to (1, 1), namely the high potential participants choose knowledge sharing strategies and low potential participants choose learning strategies; through continuous knowledge sharing and learning in collaborative process, participants' knowledge structure will be improved to different degrees, especially the improvement of knowledge supplier is particularly significant.
Subjects: Library Science，Information Science >> Library Science submitted time 2023-08-26 Cooperative journals: 《图书情报工作》
Abstract： [Purpose/significance] In this paper, the deductive analysis has been used to explore the mechanism of uncitedness, which is different from other studies where the statistical analysis is used to describe and interpret the uncitedness. [Method/process] Under the grand background of the scientific communication, the competition-selection mechanism was given to interpret the uncitedness. This was a procedure of the relevant judgment and selection related to document contents and was influenced greatly by its external characteristics at the same time. Some analysis was given in the time and space dimension based on the competition-selection mechanism. [Result/conclusion] In terms of the time evolution dimension, the competition between old and new literatures are the main cause of the uncitedness; in terms of the time section, the competition among homogeneous literatures is an important reason of the uncitedness, which is related to the literature searching, the document reference and the expression of new potential related information in the problem-solving iterative processes. The citation selection is a spontaneous self-organized process based on the competitive context.
Subjects: Library Science，Information Science >> Library Science submitted time 2023-08-26 Cooperative journals: 《图书情报工作》
Abstract： [Purpose/significance] It is of great importance to study the law of uncitednessfrom content differences, which is not only the important content in studying uncitedness phenomena, but helps to expand the boundary of citation content analysis. [Method/process] CSSCI was selected as the source database, and library and information science was chosen as the sample source.According to the features of the h index, 200 scholars were selected randomly as samples, and their related data, recorded in CSSCI from 1998 to 2015, were downloaded. All the collected data of library and information science from 1998 to 2015 were downloaded, and their relevant data about cited papers and highly cited papers were extracted.Taking 6 years as time window, the papers cited in 1 to 3 years were defined as cited papers, and the others as uncited papers.The key words of uncited papers, cited papers, all discipline papers and highly cited papers were taken and listed according to keyword frequencies from high to low, first 50 keywords were selected to be keywords vector, and their inner product, Euclidean length and cosine similarity were calculated respectively. [Result/conclusion] The results have showed that: the research content of library and information science has been probably stable at the beginning of 21st century; the content similarity between uncited papers and all discipline papers, cited papers, and highly cited papers are lower, which means the research content has a significant effect on uncited papers.
Subjects: Library Science，Information Science >> Library Science submitted time 2023-08-26 Cooperative journals: 《图书情报工作》
Abstract： [Purpose/significance] It is of importance to explore the uncited phenomenon, which is essential to the citation distribution. It not only enriches and expands the metrics fields, but helps to reveal the generative mechanism for uncited papers, making the maximum use of research resources, and enhancing the efficiency of the scientific communication. [Method/process] CSSCI was chosen as the source database.Library and information science was selected as the sample, 200 scholars were chosen randomly according to the distribution features of h index, and their papers and responding citation data were retrieved from the database.This paper took 6 years as the time window. 8 external features were extracted, and the rate of uncited papers was calculated for every group. Non-parametric tests were used to examine factorshaving significant differences. [Result/conclusion] 8 external features have significant impact on uncited papers, in which the influence of authors'affiliation is relatively smaller, the influence of authors' age when they published papers and the length of papers are relatively larger.The influence of other 5 factors, namely, authors' title, author numbers, reference numbers, keywords numbers, and fund categories, is similar to each other.In the first 3 years, the changes of the rate of uncited papers are much sharper, and in the second 3 years, the changes are relatively gentle.The time series trend and the influence stability of the rate of uncited papersvary.
Subjects: Library Science，Information Science >> Library Science submitted time 2023-07-26 Cooperative journals: 《图书情报工作》
Abstract： [Purpose/significance] Exploring the characteristics and laws of the scientific data citation behavior of journal articles not only helps to describe the utilization of scientific data in academic areas, but also reveals the data citation models of the expression of academic works.[Method/process] The articles contained in the first issue of six journals in library and information science in China during 2017 and 2018 were selected as the sample. Based on the citation elements of the China's national standard Information Technology Scientific Data Citation, the scientific data citation behavior records of the sample papers had been encoded from nine dimensions by the content analysis method, and the characteristics and the relationships between different characteristics of the citation behavior had been analyzed by the statistical analysis method.[Result/conclusion] The results show that:scientific data citation is relatively common in library and information science, and the reorganized statistical data from the domestic and international are widely cited, and the citation of personal research scientific data in journal academic articles is large; there are some correspondence relationships between citation styles and scientific data types, but diverse citation styles lack uniformity; in addition, second-hand citation behavior is obvious, and its degree is related to the creator type of scientific data.
Subjects: Library Science，Information Science >> Information Science submitted time 2023-04-01 Cooperative journals: 《图书情报工作》
Abstract： [Purpose/significance] With the deepening of research on Altmetrics, it is of great significance to effectively identify the needs of stakeholders in Altmetrics evaluation,which is useful to design the evaluation indicators and construct the data infrastructure. [Method/process] Taking researchers of universities in China mainland as the sampling, this paper used the semi-structured interview to identify the Altmetrics evaluation needs for University researchers in China mainland, and used questionnaire to explore the differences of the identified Altmetrics evaluation needs for University researchers. [Result/conclusion] It is found that there are seven Altmetrics evaluation needs for University researchers in China mainland, which are research evaluation, achievement display, needs discovery, academic recognition, communication and dissemination, achievement operation and discipline development. There are need differences in "research evaluation" for University researchers among different age groups, in which the "research evaluation" needs in 51-60 age groups are clearly lower than the other age groups. Except for "communication", the other six Altmetrics evaluation needs in humanities are lower than the social and natural subjects, and the evaluation needs in social and natural subjects are equal. Except for the needs differences between teachers and students in "research evaluation", the other six Altmetrics evaluation needs are not different in all other different status categories of University researchers. The results show that 7 Altmetrics evaluation needs have high universal applicability.
Subjects: Library Science，Information Science >> Information Science submitted time 2023-04-01 Cooperative journals: 《图书情报工作》
Abstract： [Purpose/significance] This paper discusses the users' motivation to publish short reviews on the Douban Reading platform, and tries to judge whether the short reviews are effective as indicators to evaluate the influence of books, so as to get inspiration for the indicator construction for Altmetrics to assess Chinese academic books.[Method/process] Taking the top 10 cited books of ancient Chinese academic ones published in the CBKCI statistical report as samples, this paper used the grounded theory to analyze the 1,142 "short comments" of the sample books on Douban Reading website, and explored the motivation of the short comments and its availability to assess the social influences of academic books.[Result/conclusion] 6 main motivation for users to generate short reviews are identified, such as discussion, sharing entertainment, external pressure, emotional venting, and data acquisition. Among them, the "discussion" motivationis is the main one and its two sub-motivations "expressing personal experiences or ideas related to books" and "expressing opinions or personal explanations on books" account for more than 40% of all short review data. It indicates that most users do not only just copy a certain sentence or a certain chapter of a book, but try to find and spread the most valuable information of the book. Such short-review data can be used to evaluate Chinese academic books. Others motivation, such as "share", "recreational entertainment", "outside pressure", "emotional vent", and "data acquisition", are relatively difficult to reflect well users' attitude and cognition about the books, and these data should not be included in the Altmetrics index to evaluate Chinese academic books.
Subjects: Library Science，Information Science >> Information Science submitted time 2023-04-01 Cooperative journals: 《图书情报工作》
Abstract： [Purpose/significance] In the age of big data, the diversification of media and the overload of information have caused negative information phenomenon, such as information cocoons, which has attracted more and more attention in academic community. It is of great significance to analyze the causes of the information cocoons, so as to eliminate its negative impact on cyberspace governance and guide the orderly development of information space. [Method/process] Based on the previous studies and under user perspectives, logical normalization method is used to explore the causes of information cocoons from information space, personal information space and their interaction relationship. [Result/conclusion] The results have showed that the historical necessity, technical causality and user self-suitability are the main causes of information cocoons. Information cocoons is the inevitable trend of the information era, in which technology plays a catalytic role, and individual cognition plays a dominant role.
Subjects: Computer Science >> Integration Theory of Computer Science submitted time 2018-05-18 Cooperative journals: 《计算机应用研究》
Abstract： In order to improve the robustness and efficiency of video retrieval for human activity, this paper proposed a fuzzy weighted method for human activity video retrieval. This method used 3D Harris operator to detect the spatio-temporal interest points in the video, and extracted the gradient information of these points to construct feature vector to describe video. Then it used fuzzy clustering method to construct uses fuzzy clustering feature vector, to improve the ability of anti-interference of feature vector. And then, it matched pair of gradient vector in the fuzzy clustering feature vectors to construct fuzzy weight matrix, and calculated the similarity between the query video and each video in the database. Finally, it carried out the video retrieval experiment on the KTH database, and carried the evaluation out with three metrics of accuracy, recall and retrieval time, which proved that the performance of this method is the best.
Subjects: Library Science，Information Science >> Information Science submitted time 2017-11-08 Cooperative journals: 《数据分析与知识发现》
Abstract：【目的】总结国内外时态信息检索研究现状, 以期为相关学者更好地把握时态信息检索研究问题提供理论基础。【文献范围】在Google Scholar 中分别以检索式“Temporal Information”与“时态信息”且不限定时间范围地进行文献检索，获得部分相关文献后，再结合追溯法最终得到92 篇相关文献。【方法】基于文献调研与归纳总结方法，分别从文档中时态信息抽取、查询中时态信息识别和时间感知排序三方面对时态信息检索的相关研究进行综述与评述。【结果】研究发现时态信息检索研究存在着如下问题和挑战：国外对时态检索研究比较多，而国内的相关研究甚少; 利用表征时间信息的实体与事件演化信息识别文档关注时间的相关研究不足; 缺乏对非周期变化查询的意图预测; 时态信息检索模型实验的可重复性有待提高。【局限】未对该领域的文档采集、文档索引以及相关应用进行文献综述。【结论】构建标准化的评测数据集以及无参数时态信息检索模型将是时态信息检索领域的未来方向研究。
Subjects: Library Science，Information Science >> Information Science submitted time 2017-11-08 Cooperative journals: 《数据分析与知识发现》
Abstract：【目的】总结国内外时态信息检索研究现状, 以期为相关学者更好地把握时态信息检索研究问题提供理论基础。【文献范围】在Google Scholar 中分别以检索式“Temporal Information”与“时态信息”且不限定时间范围地进行文献检索，获得部分相关文献后，再结合追溯法最终得到92 篇相关文献。【方法】基于文献调研与归纳总结方法，分别从文档中时态信息抽取、查询中时态信息识别和时间感知排序三方面对时态信息检索的相关研究进行综述与评述。【结果】研究发现时态信息检索研究存在着如下问题和挑战：国外对时态检索研究比较多，而国内的相关研究甚少; 利用表征时间信息的实体与事件演化信息识别文档关注时间的相关研究不足; 缺乏对非周期变化查询的意图预测; 时态信息检索模型实验的可重复性有待提高。【局限】未对该领域的文档采集、文档索引以及相关应用进行文献综述。【结论】构建标准化的评测数据集以及无参数时态信息检索模型将是时态信息检索领域的未来方向研究。
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