1,395 research outputs found

    Neurocognitive Informatics Manifesto.

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    Informatics studies all aspects of the structure of natural and artificial information systems. Theoretical and abstract approaches to information have made great advances, but human information processing is still unmatched in many areas, including information management, representation and understanding. Neurocognitive informatics is a new, emerging field that should help to improve the matching of artificial and natural systems, and inspire better computational algorithms to solve problems that are still beyond the reach of machines. In this position paper examples of neurocognitive inspirations and promising directions in this area are given

    A Taxonomy of Information Retrieval Models and Tools

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    Information retrieval is attracting significant attention due to the exponential growth of the amount of information available in digital format. The proliferation of information retrieval objects, including algorithms, methods, technologies, and tools, makes it difficult to assess their capabilities and features and to understand the relationships that exist among them. In addition, the terminology is often confusing and misleading, as different terms are used to denote the same, or similar, tasks. This paper proposes a taxonomy of information retrieval models and tools and provides precise definitions for the key terms. The taxonomy consists of superimposing two views: a vertical taxonomy, that classifies IR models with respect to a set of basic features, and a horizontal taxonomy, which classifies IR systems and services with respect to the tasks they support. The aim is to provide a framework for classifying existing information retrieval models and tools and a solid point to assess future developments in the field

    A Survey on Important Aspects of Information Retrieval

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    Information retrieval has become an important field of study and research under computer science due to the explosive growth of information available in the form of full text, hypertext, administrative text, directory, numeric or bibliographic text. The research work is going on various aspects of information retrieval systems so as to improve its efficiency and reliability. This paper presents a comprehensive survey discussing not only the emergence and evolution of information retrieval but also include different information retrieval models and some important aspects such as document representation, similarity measure and query expansion

    Computing with Granular Words

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    Computational linguistics is a sub-field of artificial intelligence; it is an interdisciplinary field dealing with statistical and/or rule-based modeling of natural language from a computational perspective. Traditionally, fuzzy logic is used to deal with fuzziness among single linguistic terms in documents. However, linguistic terms may be related to other types of uncertainty. For instance, different users search ‘cheap hotel’ in a search engine, they may need distinct pieces of relevant hidden information such as shopping, transportation, weather, etc. Therefore, this research work focuses on studying granular words and developing new algorithms to process them to deal with uncertainty globally. To precisely describe the granular words, a new structure called Granular Information Hyper Tree (GIHT) is constructed. Furthermore, several technologies are developed to cooperate with computing with granular words in spam filtering and query recommendation. Based on simulation results, the GIHT-Bayesian algorithm can get more accurate spam filtering rate than conventional method Naive Bayesian and SVM; computing with granular word also generates better recommendation results based on users’ assessment when applied it to search engine

    Terms interrelationship query expansion to improve accuracy of Quran search

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    Quran retrieval system is becoming an instrument for users to search for needed information. The search engine is one of the most popular search engines that successfully implemented for searching relevant verses queries. However, a major challenge to the Quran search engine is word ambiguities, specifically lexical ambiguities. With the advent of query expansion techniques for Quran retrieval systems, the performance of the Quran retrieval system has problem and issue in terms of retrieving users needed information. The results of the current semantic techniques still lack precision values without considering several semantic dictionaries. Therefore, this study proposes a stemmed terms interrelationship query expansion approach to improve Quran search results. More specifically, related terms were collected from different semantic dictionaries and then utilize to get roots of words using a stemming algorithm. To assess the performance of the stemmed terms interrelationship query expansion, experiments were conducted using eight Quran datasets from the Tanzil website. Overall, the results indicate that the stemmed terms interrelationship query expansion is superior to unstemmed terms interrelationship query expansion in Mean Average Precision with Yusuf Ali 68%, Sarawar 67%, Arberry 72%, Malay 65%, Hausa 62%, Urdu 62%, Modern Arabic 60% and Classical Arabic 59%

    A Mathematical Measurement For Korean Text Mining and Its Application

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    Department of Mathematical SciencesIn modern society we are buried beneath an overwhelming amount of text data on the internet. We are less inclined to just surf the web and pass the time. To solve this problem, especially to grasp part and parcel of the text data we are presented, there have been numerous studies on the relationship between text data and the ease of the perception of the text???s meaning. However, most of the studies focused on English text data. Since most research did not take into account the linguistic characters, these same methods are not suitable for Korean text. Some special method is required to analyze Korean text data utilizing the characteristics of Korean. Thus we are proposing a new framework for Korean text mining in various texts via proper mathematical measurements. The framework is constructed with three parts: 1) text summarization 2) text clustering 3) relational text learning. Text summarization is the method of extracting the essential sentences from the text. As a measure of importance, we propose specific formulas which focus on the characteristics of Korean. These formulas will provide the input features for the fuzzy summarization system. However, this method has a significant defect for large data set. The number of the summarized sentences increases with the word count of a particular text. To solve this, we propose using text clustering. This field has been studied for a long time. It has a tradeo??? of accuracy for speed. Considering the syllable features of Asian linguistics, we have designed ???Syllable Vector??? as a new measurement. It has shown remarkable performance as implemented with text clustering, especially for high accuracy and speed through e???ectively reducing dimensions. Thirdly, we considered the relational feature of text data. The above concepts deal with the document itself. That is, text information has an independent relationship between documents. To handle these relations, we designed a new architecture for text learning using neural networks (NN). Recently, the most remarkable work in natural language processing (NLP) is ???word2vec???, which is built with artificial neural networks. Our proposed model has a learning structure of bipartite layers using meta information between text data, with a focus on citation relationships. This structure reflects the latent topic of the text using the quoted information. It can solve the shortcomings of the conventional system based on the term-document matrix.ope
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