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Hierarchical cryptographic key management of access control can be modeled as a partially ordered set in which a high security class can derive its descendant encryption keys, but not vice versa. In this paper, we propose a practical key management scheme for our segment-based document which is a novel XML-based document format for web publishing, called CEBX. The proposed scheme is not only efficient...
E-learning technologies such as Web-CT, Blackboard, Moodle and Sakai are the common learning management systems used in teaching these days. Using technology to support group work is a more recent practice than using it for teaching material delivery. Research in preparing students to use technology for online group work especially in distance education is limited. This research is a case study that...
In recent days more and more software developments tools become distributed by the SaaS (Software-As-A Service) model alongside with ready-to-install products. The developers of task and bug tracking systems now offer their solutions by a monthly fee. For instance, JIRA Studio produced by Atlassian can be connected to a corporative domain by subscription. This scheme allows software companies to reduce...
The emergence of an ever increasing number of documents makes it more and more difficult to locate them when desired. An approach for improving search results is to make use of user-generated tags. This approach has led to improvements. However, they are limited because tags are (1) free from context and form, (2) user generated, (3) used for purposes other than description, and (4) often ambiguous...
In the midst of a developing Web that increases its size with a constant rhythm, automatic document organization becomes important. One way to arrange documents is by categorizing them into topics. Even when there are different forms to consider topics and their extraction, a practical option is to view them as document groups and apply clustering algorithms. An attractive alternative that naturally...
Recent progress in research fields such as information extraction and information retrieval enables the creation of systems providing better search experiences to Web users. For example, systems that retrieve entities instead of just documents have been built. In this paper we present an approach for large-scale entity retrieval using Web collections as underlying corpus. We propose an architecture...
In a Web of increasing size and complexity, a key issue is automatic document organization, which includes topic extraction in collections. Since we consider topics as document clusters with semantic properties, we are concerned with exploring suitable clustering techniques for their identification on hyperlinked environments (where we only regard structural information). For this purpose, three algorithms...
This paper explores the effect of profile based method for classification of Wikipedia XML documents. Our approach builds two profiles, exploiting the whole content, Initial Descriptions and links in the Wikipedia documents. For building profiles we use the negative category information which has shown to perform well for classifying unstructured texts. The performance of Cosine and Fractional Similarity...
Real-world applications have to take into consideration both topics and sentiments for precise opinion measurement. Topic and sentiment alignment is crucial for opinion retrieval, extraction, categorization, and aggregation on various issues. In this paper, we have reported a Monolingual Event (or, topic) tracking system for Bengali. The system has been developed based on a newspaper corpus developed...
Field association (FA) terms form a limited set of discriminating terms that give us the knowledge to identify document fields. The primary goal of this research is to make a system that can imitate the process whereby humans recognize the fields by looking at a few Chinese FA terms in a document. This paper proposes a new approach to build a Chinese FA terms dictionary automatically from Wikipedia...
Publication of documents on the web is a non trivial task for non technical people. People that are are not interested in learning the elements of the Web and its protocols should be allowed to publish documents on the web in HTML format without having to change their habits or having to learn hot to use new, specialized authoring tools. The FacilUeb Project aimed at studying the behavior of non technical...
A important phase in any Web personalization system is transaction identification. Recently a number of researches have been done to incorporate semantics of a website in representation of transactions. Building a hierarchy of concepts manually is time consuming and expensive. In this paper we intend to address these shortcomings. Our contribution is that we introduce a mechanism to automatically...
Existent solutions for work process automation in companies were analyzed. Problem-solving techniques of internal document management were suggested to improve the efficiency of team-work.
We present a technique which is able to reliably label words or phrases of an arbitrary document with Wikipedia articles (concepts) best describing their meaning. First it scans the document content, and when it finds a word sequence matching the title of a Wikipedia article, it attaches the article to the constituent word(s). The collected articles are then scored based on three factors: (1) how...
Document indexation is an essential task achieved by archivists or automatic indexing tools. To retrieve relevant documents to a query, keywords describing this document have to be carefully chosen. Archivists have to find out the right topic of a document before starting to extract the keywords. For an archivist indexing specialized documents, experience plays an important role. But indexing documents...
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