排序方式： 共有18条查询结果，搜索用时 15 毫秒
1.
This paper describes, evaluates and compares the use of Latent Dirichlet allocation (LDA) as an approach to authorship attribution. Based on this generative probabilistic topic model, we can model each document as a mixture of topic distributions with each topic specifying a distribution over words. Based on author profiles (aggregation of all texts written by the same writer) we suggest computing the distance with a disputed text to determine its possible writer. This distance is based on the difference between the two topic distributions. To evaluate different attribution schemes, we carried out an experiment based on 5408 newspaper articles (Glasgow Herald) written by 20 distinct authors. To complement this experiment, we used 4326 articles extracted from the Italian newspaper La Stampa and written by 20 journalists. This research demonstrates that the LDA-based classification scheme tends to outperform the Delta rule, and the χ2 distance, two classical approaches in authorship attribution based on a restricted number of terms. Compared to the Kullback–Leibler divergence, the LDA-based scheme can provide better effectiveness when considering a larger number of terms. 相似文献
2.
《著作权集体管理条例》对图书馆的影响和启示 总被引：2，自引：0，他引：2
《著作权集体管理条例》提供了图书馆集体管理组织使用著作权的可操作规程,也使图书馆找到了维护自身权益的新的法律途径。图书馆要充分认识短期内通过集体管理组织使用著作权仍然存在的障碍。在集体管理机制不完善的情况下,图书馆应采用授权模式的多元化策略。应积极建立图书馆共同体。同时要关注国外著作权集体管理制度的新动向,向立法机关适时提出建议。 相似文献
3.
The future of academic libraries largely depends on our ability to be innovative, anticipate our users' needs, adapt to a changing landscape, and prove our value through evidence. However, if our higher education colleagues do not perceive the profession as being relevant, our ability to innovate, anticipate, and adapt will be moot. This study investigates the visibility of librarians as authors in scholarly higher education (HE) and teaching and learning (TL) journals between 2000 and 2012. Findings include that 1.38% of articles published in these journals were written by a librarian author or authors, most of who are employed at research institutions. Information literacy was the most common topic, and theoretical articles were the most popular article type. 相似文献
4.
Tayfun Kucukyilmaz B. Barla Cambazoglu Cevdet Aykanat Fazli Can 《Information processing & management》2008
The focus of this paper is to investigate the possibility of predicting several user and message attributes in text-based, real-time, online messaging services. For this purpose, a large collection of chat messages is examined. The applicability of various supervised classification techniques for extracting information from the chat messages is evaluated. Two competing models are used for defining the chat mining problem. A term-based approach is used to investigate the user and message attributes in the context of vocabulary use while a style-based approach is used to examine the chat messages according to the variations in the authors’ writing styles. Among 100 authors, the identity of an author is correctly predicted with 99.7% accuracy. Moreover, the reverse problem is exploited, and the effect of author attributes on computer-mediated communications is discussed. 相似文献
5.
《读书》杂志曾经是当代人文知识界最具有影响力的老牌杂志。共同的文化理想将当代中国文化界和思想界的全部精英汇聚于此,成为当时思想文化界的重镇,构建了一个重要的思想论坛和宝贵的知识分子言论空间。《读书》的作者群体经历了学术与思想的分化、人文精神和世俗精神的分化以及自由主义和新左派的论争,最大程度地反映了不同时期思想文化特征与知识分子的思考轨迹。 相似文献
6.
The content generation strategy of a sports franchise determines whether the user engagement increases or decreases on social media platforms. Thus, the role of Chief Operating Officer (COO) is profound who generally decides and governs social media policies of the franchises. We show that the cultural differences between local-COO vis-à-vis foreign-COO-governed sports franchises reflect in their content generation strategy and are also associated with user engagement. We use Hofstede's cultural dimensions theory and extract relevant features from the tweets. Overall, the results show that user engagement is more when the content generation strategy is in alignment with fans’ national culture. The first contribution of our work is towards showing the incremental impact of power distance, individualism and collectivism on user engagement. The second contribution of our work is towards feature construction, feature selection and building authorship attribution classifiers to understand the content generation strategy. Prior literature shows that national culture impacts writing of online reviews. We investigate the role of national culture in social media content generation and user engagement and extend the literature. Our study is useful for organizations to understand the role of national culture in content generation and how it is related to user engagement. 相似文献
7.
8.
Rafael Guzmán-Cabrera Manuel Montes-y-Gómez Paolo Rosso Luis Villaseñor-Pineda 《Information Retrieval》2009,12(3):400-415
Most current methods for automatic text categorization are based on supervised learning techniques and, therefore, they face the problem of requiring a great number of training instances to construct an accurate classifier. In order to tackle this problem, this paper proposes a new semi-supervised method for text categorization, which considers the automatic extraction of unlabeled examples from the Web and the application of an enriched self-training approach for the construction of the classifier. This method, even though language independent, is more pertinent for scenarios where large sets of labeled resources do not exist. That, for instance, could be the case of several application domains in different non-English languages such as Spanish. The experimental evaluation of the method was carried out in three different tasks and in two different languages. The achieved results demonstrate the applicability and usefulness of the proposed method. 相似文献
9.
【目的】 国内外医学期刊论文署名多通信作者的情况日益增多,但是学术界对于多通信作者署名的统一要求和规范较少。寻找多通信作者署名特点,探讨其带来的影响,提出规范多通信作者署名的建议。【方法】 通过查阅49篇多通信作者论文,观察整理通信作者的署名位置、标注形式和文字表述等特点。【结果】 多通信作者署名位置不统一,以末2位多见,标注形式和文字表述多种多样,不利于数据库检索、论文管理和科研评价。【结论】 统一、规范多通信作者的署名要求有其必要性,此举有利于数据库设置检索条件,提高科研检索准确性,便于实施科研论文管理和科研评价。 相似文献
10.
逐渐增长的公共领域,为创造、研究和学术提供了新的机会。有效的图书馆项目和服务是促进知识进步的工具。创造力和技术进步源于个体研究和学习。我们的目标同著作权的目标是一致的。 相似文献