Thesis (Ph. D.)--University of California, Los Angeles, 1987. / Includes vita. Includes bibliographical references (leaves 275-279).

Thesis (M.S.)--University of Missouri--Columbia, 2004. / "May 2004." Typescript. Includes bibliographical references (leaves 261-265). Also issued on the Internet.

Thesis (M.S.)--University of Missouri--Columbia, 2004. / Typescript. Includes bibliographical references (leaves 261-265). Also issued on the Internet.

The research journals and publications are great source of knowledge produced by the virtue of hard work done by researchers. Several digital libraries have been maintaining the records of such research publications in order for general people and other researchers to find and study the previous work done in the research field they are interested in. In order to make the search criteria effective and easier, all of these digital libraries keep a record/database to store the meta-data of the publications. These meta-data records are generally well design to keep the vital records of the publications/articles, which has the potential to give information about the researcher, their research activities, and hence the competence profile. This thesis work is a study and search of method for building the competence profile of researchers’ base on the records of their publications in the well-known digital libraries. The publications of researchers publish in different publication houses, so, in order to make a complete profile, the data from several of these heterogeneous digital libraries sources have to be integrated semantically. Several of the semantic technologies were studied in order to investigate the challenges of integration of the heterogeneous sources and modeling the researchers’ competence profile .An approach of on-demand profile creation was chosen where user of system could enter some basic name detail of the researcher whose profile is to be created. In this thesis work, Design Science Research methodology was used as the method for research work and to complement this research method with a working artifact, scrum- an agile software development methodology was used to develop a competence profile system as proof of concept.

Typescript (photocopy). / Digitized by Kansas Correctional Industries

Automatic language identification has been applied to short texts such as queries in information retrieval, but it has not yet been applied to metadata records. Applying this technology to metadata records, particularly their title elements, would enable creators of metadata records to obtain a value for the language element, which is often left blank due to a lack of linguistic expertise. It would also enable the addition of the language value to existing metadata records that currently lack a language value. Titles lend themselves to the problem of language identification mainly due to their shortness, a factor which increases the difficulty of accurately identifying a language. This study implemented four proven approaches to language identification as well as one open-source approach on a collection of multilingual titles of books and movies. Of the five approaches considered, a reduced N-gram frequency profile and distance measure approach outperformed all others, accurately identifying over 83% of all titles in the collection. Future plans are to offer this technology to curators of digital collections for use.

Classification of scientific bibliographic data is an important and increasingly more time-consuming task in a “publish or perish” paradigm where the number of scientific publications is steadily growing. Apart from being a resource-intensive endeavor, manual classification has also been shown to be often performed with a quite high degree of inconsistency. Since many bibliographic databases contain a large number of already classified records supervised machine learning for automated classification might be a solution for handling the increasing volumes of published scientific articles. In this study automated classification of bibliographic data, based on two different machine learning methods; Naive Bayes and Support Vector Machine (SVM), were evaluated. The data used in the study were collected from the Swedish research database SwePub and the features used for training the classifiers were based on abstracts and titles in the bibliographic records. The accuracy achieved ranged between a lowest score of 0.54 and a highest score of 0.84. The classifiers based on Support Vector Machine did consistently receive higher scores than the classifiers based on Naive Bayes. Classification performed at the second level in the hierarchical classification system used clearly resulted in lower scores than classification performed at the first level. Using abstracts as the basis for feature extraction yielded overall better results than using titles, the differences were however very small.

Bibliographic data provide well established means of the information resource description. Nowadays, there is obvious need to make this data more web-friendly and web-compatible, while web is mostly seen as the only place where people are seeking information. The proposed solution is to change the traditional bibliographic data representation format. Semantic Web initiative presents enhancement of the current web with machine processable data semantics (meaning). The main goal is to manage more effective information processing by web applications that brings up many benefits for web users. Linked data are seen as practical means to reach the semantic web vision. This initiative promotes best practices of publishing, connecting and sharing structural data on the web. This thesis reports the transformation of bibliographic records' format in case of Database of publishing activities at University of Economics, Prague (PCVSE). Benefits of linked data publishing model are demonstrated on the realized projects. The main part describes practical experiences gained during the implementation of RDF framework in phases of data modelling, interlinking and exposing the dataset. The linked data publishing model is seen there as an optimal web-compatible bibliographic data representation format.

L'analyse en ligne OLAP (Online Analytical Processing) est une des technologies les plus importantes dans les entrepôts de données, elle permet l'analyse multidimensionnelle de données. Cela correspond à un outil d'analyse puissant, tout en étant flexible en terme d'utilisation pour naviguer dans les données, plus ou moins en profondeur. OLAP a été le sujet de différentes améliorations et extensions, avec sans cesse de nouveaux problèmes en lien avec le domaine et les données, par exemple le multimedia, les données spatiales, les données séquentielles, etc. A l'origine, OLAP a été introduit pour analyser des données structurées que l'on peut qualifier de classiques. Cependant, l'émergence des réseaux d'information induit alors un nouveau domaine intéressant qu'il convient d'explorer. Extraire des connaissances à partir de larges réseaux constitue une tâche complexe et non évidente. Ainsi, l'analyse OLAP peut être une bonne alternative pour observer les données avec certains points de vue. Différents types de réseaux d'information peuvent aider les utilisateurs dans différentes activités, en fonction de différents domaines. Ici, nous focalisons notre attention sur les réseaux d'informations bibliographiques construits à partir des bases de données bibliographiques. Ces données permettent d'analyser non seulement la production scientifique, mais également les collaborations entre auteurs. Il existe différents travaux qui proposent d'avoir recours aux technologies OLAP pour les réseaux d'information, nommé ``graph OLAP". Beaucoup de techniques se basent sur ce qu'on peut appeler cube de graphes. Dans cette thèse, nous proposons une nouvelle approche de “graph OLAP” que nous appelons “Graphes enrichis par des Cubes” (GreC). Notre proposition consiste à enrichir les graphes avec des cubes plutôt que de construire des cubes de graphes. En effet, les noeuds et/ou les arêtes du réseau considéré sont décrits par des cubes de données. Cela permet des analyses intéressantes pour l'utilisateur qui peut naviguer au sein d'un graphe enrichi de cubes selon différents niveaux d'analyse, avec des opérateurs dédiés. En outre, notons quatre principaux aspects dans GreC. Premièrement, GreC considère la structure du réseau afin de permettre des opérations OLAP topologiques, et pas seulement des opérations OLAP classiques et informationnelles. Deuxièmement, GreC propose une vision globale du graphe avec des informations multidimensionnelles. Troisièmement, le problème de dimension à évolution lente est pris en charge dans le cadre de l'exploration du réseau. Quatrièmement, et dernièrement, GreC permet l'analyse de données avec une évolution du réseau parce que notre approche permet d'observer la dynamique à travers la dimension temporelle qui peut être présente dans les cubes pour la description des noeuds et/ou arêtes. Pour évaluer GreC, nous avons implémenté notre approche et mené une étude expérimentale sur des jeux de données réelles pour montrer l'intérêt de notre approche. L'approche GreC comprend différents algorithmes. Nous avons validé de manière expérimentale la pertinence de nos algorithmes et montrons leurs performances. / Online Analytical Processing (OLAP) is one of the most important technologies in data warehouse systems, which enables multidimensional analysis of data. It represents a very powerful and flexible analysis tool to manage within the data deeply by operating computation. OLAP has been the subject of improvements and extensions across the board with every new problem concerning domain and data; for instance, multimedia, spatial data, sequence data and etc. Basically, OLAP was introduced to analyze classical structured data. However, information networks are yet another interesting domain. Extracting knowledge inside large networks is a complex task and too big to be comprehensive. Therefore, OLAP analysis could be a good idea to look at a more compressed view. Many kinds of information networks can help users with various activities according to different domains. In this scenario, we further consider bibliographic networks formed on the bibliographic databases. This data allows analyzing not only the productions but also the collaborations between authors. There are research works and proposals that try to use OLAP technologies for information networks and it is called Graph OLAP. Many Graph OLAP techniques are based on a cube of graphs.In this thesis, we propose a new approach for Graph OLAP that is graphs enriched by cubes (GreC). In a different and complementary way, our proposal consists in enriching graphs with cubes. Indeed, the nodes or/and edges of the considered network are described by a cube. It allows interesting analyzes for the user who can navigate within a graph enriched by cubes according to different granularity levels, with dedicated operators. In addition, there are four main aspects in GreC. First, GreC takes into account the structure of network in order to do topological OLAP operations and not only classical or informational OLAP operations. Second, GreC has a global view of a network considered with multidimensional information. Third, the slowly changing dimension problem is taken into account in order to explore a network. Lastly, GreC allows data analysis for the evolution of a network because our approach allows observing the evolution through the time dimensions in the cubes.To evaluate GreC, we implemented our approach and performed an experimental study on a real bibliographic dataset to show the interest of our proposal. GreC approach includes different algorithms. Therefore, we also validated the relevance and the performances of our algorithms experimentally.

國立臺灣圖書館於2012年12月啟用「視障電子資源整合查詢系統」，為視障資源整合開啟合作的開端，為瞭解臺灣地區提供視障資源服務的公共圖書館、大學圖書館及私立視障機構間之資源分享意向，本研究採取質性研究方法，以立意選擇視障資源服務較具規模者，共12個單位，以訪談方式進行研究調查。最後提出4個面向的研究建議，作為相關機構訂定計畫及服務之參考。 研究結果分為三個面向分述如下： 一、我國視障資源書目採集中式聯合目錄方式提供 (一)視障電子資源整合查詢系統：對機構而言，可避免重覆購買及重覆 製作，但需考量製作書籍所產生的時間差問題。對讀者來說，增加 了搜尋館藏的途徑，但是在介面上需要更加親和。 (二)視障機構參與視障資源館藏書目共享的意向與困難 1.訪談的12所機構均表示願意參與書目共享和合作：認為書目共享已可 滿足視障者找尋資料的需求，以及各館都有共識不重覆製作及錄製書 籍。 2.整合所遭遇的困難，是技術層面、心理層面及對整合所抱持的期待的 問題。 (1)書目的提供能以API方式介接，而API的經費能獲得補助。 (2)資源少的館希望盡快成立合作組織增加服務資源。 (3)館藏多的單位要求績效與回饋。 二、資源共享與館際互借 (一)電子全文難以共享，需要單一認證機制；實體書借用以瞽者文件方 式進行較有效率。 (二)訂定合作組織的目標、意義、角色與功能。 三、視障資源合作共享模式的建立：書目資源採用集中式，服務採用分 散式，專責圖書館需建立輔導機制 (一)書目資源採用集中式，服務採用分散式較為可行。 (二)視障資源的製作與錄製有其專業性，盲用電腦的不斷發展，二者都 需要專責圖書館的輔導與支援。 / National Taiwan Library launched Visual Impairment Information System in December 2012 which started the integration of visual impairment resources. To realize the intension of resources sharing in the public libraries, university libraries and private organizations which have alternative formats materials available in Taiwan. The study adopt qualitative interview research method, and choose 12 units which provide services to visually impaired people with quite scale. The study gets results in three aspects: I. Bibliographies of visually impaired materials are offered by centralized union catalog. 1.Visual Impairment Information System: First, it can be not to buy and produce materials in duplicate with respect to organizations. But timing of producing alternative materials is still need to be considered. Second, there is another way to find materials, but the interface of the system should be more friendly with respect to readers. 2.The intensions and difficulties of sharing and cooperation of visually impaired organizations. (1)12 units have the same responses of willing to participate in the cooperation: The need can be satisfied with bibliographical sharing when visually impaired people find materials. Every organization has the same opinion not to produce and to record books in duplicate. (2)There are three aspects of difficulties of sharing and cooperation: systematic, mental and expectant difficulties. 1)Bibliographies can be connected and accessed by API program, and the library designate provides the cost of API program. 2)The organization with less resources hope to cooperate as soon as possible to increase resources for available. 3)The organization with rich resources demand for performance, achievement and feedback. II. Resources sharing and interlibrary loan 1.Electronic full-text materials are hard to share, and access the materials with single authentication. 2.Providing home delivery service of print materials in alternative formats and audio books will have been more efficient. 3.Formulate the goals, meanings, roles and functions of cooperated organizations. III. The model of sharing and cooperation in visually impaired resources 1.Centralized union catalog and distributed services are recommended. 2.Producing materials in alternative formats is professional. Blind-used computers are developing continuously. Library designate should give advice, assistance and supports.