台灣金融業為因應全球金融自由化及國際化的趨勢，近年來，陸續成立了十四家金融控股公司，藉由原有之金融三大領域；銀行、保險與證券之資源統籌與資本集中，建立多角化的經營版圖，同時開發創新的組合式金融商品，以共同行銷之方式，提供顧客一次購足的服務並降低營運成本。 本研究基於探索共同行銷電腦化整合的動機，並以下列二點為研究目的： 1. 探討金融控股公司如何運用集團資訊資源，減少各子公司之重覆投資，達到資源共享目的。 2. 探討金融集團共同行銷之資訊應用系統整合架構。 本研究以Zachman Framework資訊架構為分析工具，進行以國內某金融集團為例之個案研究，此一個案之核心係銀行與保險公司之保單借款，並於其中加入證券公司資源以利探討金融集團應用資訊之整合，分析企業應用整合(EAI)平台進行即時之借款、還款與財富理財等服務之建置工作。 研究結果發現，資訊科技的整合在共同行銷上應用之成效主要有四個層面： 1. 整合集團客戶資料，建立客戶關係管理。 2. 發展組合式金融商品，滿足客戶需求。 3. 通路整合，銷售流程自動化。 4. 建立集團單一入口網站，有效降低資訊成本。 / In recent years, fourteen financial holding companies have been consecutively founded in Taiwan’s financial sector in response to the liberalization and globalization trends of the world finance. Stemming from three major finance realms, such as the pooling of resources and capital for banking, insurance, and securities, multi-faceted business territories have been established. By providing the customers with bundling of financial products and services towards a on-stop-shopping manner, the financial industry has begun to reducing operation costs by using cross-selling methodologies. This research explores thus the framework and IT requirement behind cross-selling services, with the following research goals: 1. to investigate the methodology needed by financial holding companies to employ corporate information resources to reduce redundant investments of subsidiary companies and to achieve the mutual resource usage goal. 2. to investigate the information resources integration framework for cross-selling financial corporations. Based on analytic method originated from Zachman Framework, this research conducted thus a case study on a domestic financial group. The core of this case study is to identify policy loan related cross-selling activities among the banking and insurance companies of the financial group. Therefore, the author has dissected and restructured the legacy financial application of information technology to establish an overview of the architect of EAI (Enterprise Applications Integration) platform with extension of real-time lending, repayment, and wealth management services, etc. A last, this research concludes the affected efficacy with respect to four aspects on information technology integration of cross-selling: 1. Organization of information resources and establishment of customer relations management. 2. Development of composite financial products to satisfy customer needs. 3. Channels integration and sales force automation system. 4. Establishment of enterprise portal with at least single-sign-on functionality to reduce cost efficiently.

公共圖書館面對網際網路以及兒童上網趨勢所帶來的影響，早已嘗試結合網路與電腦來建置兒童專屬的網站以提供新的兒童服務。然而，為求了解網站使用成效與提升網站之品質，公共圖書館有必要針對兒童網站進行評鑑作業。國外研究者針對兒童網站與網路資源早已建置了許多網站評鑑指標提供圖書員、中小學教師與兒童做為選擇、評鑑網站優劣時之參考，反觀國內相關研究內容則十分缺乏。因此，為求提升國內公共圖書館中文版兒童網站之品質，有必要針對兒童網站進行評鑑研究。 基於上述研究動機本研究首先透過文獻分析法探討兒童網站建置與規劃、兒童資訊需求與資訊尋求行為，以及網站評鑑指標與兒童網站評鑑要項等相關文獻做為本次研究之理論基礎。其次，彙整各領域專家學者所提出之網站評鑑指標並透過問卷調查法蒐集家長對指標重要性之看法以及對網站功能與服務之建議。最後，針對國內公共圖書館中文版兒童網站進行調查研究，了解現行網站之數量並針對12項網站可茲提供之服務內容進行分析比較。 依據研究資料分析，本研究提出相關結論如下: 一、網站評鑑指標：總計共有介面設計與資訊架構、網站內容、網站互動性、多媒體特性以及網站連結品質等五大構面，50項評鑑指標可做為公共圖書館評鑑之依據，研究結論包含：(一)網站內容為家長認為最重要之評鑑構面；(二)教育性、知識性、正確性、適切性、趣味性和新穎性是家長關注的網站內容性質；(三)資訊架構與介面設計構面中家長首重介面設計之易操作性、閱讀性與美觀性；(四)網站互動性功能應以有效協助兒童使用網站為首要目的；(五)網路頻寬為影響多媒體技術和網站連結品質之重要因素。 二、網站內容分析部份：目前國內共有十所公共圖書館提供中文版兒童網站介面，建置單位層級以縣(市)圖書館為主，研究結論包含(一)各館網站服務數量提供不均，數量差距頗大；(二)圖書館基本資料和相關規定、最新消息、館藏查詢、網路資源區、諮詢服務與討論區為網站最常提供的服務項目；(三)各館網站服務內容各有特色，服務名稱採用適合兒童程度之詞彙；(四)部份網站內容有連結錯誤或服務項目無內容之情形；(五)各館缺乏兒童專屬之館藏查詢介面。 最後，本研究提出數點建議如下：一、國內公共圖書館應加速規劃建置中文版兒童網站；二、已建置網站者應加強內容更新與維護；三、從使用者觀點建構優質兒童網站；四、依據年齡層級提供網站分層服務，實施網站分級制度；五、網站可加強規劃討論區、留言板；多媒體資源區；遊戲區和課業資源區服務；六、加強兒童版網站之利用推廣；七、針對現行公共圖書館中文版兒童網站進行評鑑。 / Under the influence of the Internet and children’s use of the Internet, public libraries have already attempted to establish websites exclusively for children in combination of the Internet and computers to offer children new services. However, it is necessary for public libraries to assess websites for children to ensure that they can be effectively used by children. Foreign researchers have already established many assessment indicators on websites and the Internet resources for children for elementary and high school teachers to choose good websites for children. Similar researches are rare in Taiwan. It is, there is necessary to conduct assessment study on websites for children in order to increase the quality for public libraries’ websites in for children. Based on the aforesaid motive, literature reviewed is used to explore documents regarding establishment/planning of children’s websites, children’s information need and information seeking behavior, website assessment indicators and assessment elements, etc as the theory basis of this study. Second, gathering website assessment indicators of specialists and scholars in different fields ,and ideas of parents on website assessment indicators and parents’ suggestions on website functions and services are collected with questionnaires . Finally, twelve items of service from websites are gathered to analyze contents of public libraries’ websites in Chinese for children. In accordance with the research information, the conclusions of this study are: I.Website assessment indicators: There are five major aspects of interface design/information structure, website contents, website interaction, multimedia and link quality. The 50 indicators shall serve as basis of assessment on public libraries. Conclusions include: 1) website contents is the most important assessment aspect to parents; 2) parents care about the education, knowledge, accuracy, appropriateness, fun and novelty in website contents; 3) parents emphasize user-friendliness, readability and esthetic in information structure and interface design; 4) the interaction of websites shall effectively help children to use the sites;and 5)bandwidth is an important factor that influence multimedia technology and link quality. II.Website contents: currently, there are ten public libraries with websites in Chinese for children. The websites are established by county (city) libraries. Conclusions include: 1) quantity of service from each website varies significantly; 2) the most common service items of these websites are: basic information and regulations, latest news, collection inquiry, resources, consultation and discussion areas; 3) each website has its unique characteristics and the names are designed for children’s understanding; 4) some websites have incorrect links or lack of content in certain service items and 5) neither website has collection inquiry exclusively for children. Based on the aforesaid results, the suggestions include: 1) domestic libraries shall expedite planning websites in Chinese for children; 2) those already having websites shall enrich the contents and enhance maintenance; 3) to establish good websites for children in the views of users; 4) implementing leveled services based on age groups; 5) discussion area, message boards, multimedia resources area, games area and class resources area are recommended; 6) enhancing the utilization of websites for children; and 7) conducting assessment on domestic public libraries’ websites in Chinese for children.

Web services provide a standardized means of publishing diverse, distributed applications. Increasingly, corporations are providing services or programs within and between organizations either on corporate intranets or on the cloud. Many of these services can be composed together, ideally automatically, to provide value-added service. Automated Web service composition is an example of such automation where given a specification of an objective to be realized and some knowledge of the state of the world, the problem is to automatically select, integrate, and invoke multiple services to achieve the specified objective. A popular approach to the Web service composition problem is to conceive it as an Artificial Intelligence planning task. This enables us to bring to bear many of the theoretical and computational advances in reasoning about actions to the task of Web service composition. However, Web service composition goes far beyond the reaches of classical planning, presenting a number of interesting challenges relevant to a large body of problems related to the composition of actions, programs, and services. Among these, an important challenge is generating not only a composition, but a high-quality composition tailored to user preferences. In this thesis, we present an approach to the Web service composition problem with a particular focus on the customization of compositions. We claim that there is a correspondence between generating a customized composition of Web services and non-classical Artificial Intelligence planning where the objective of the planning problem is specified as a form of control knowledge, such as a workflow or template, together with a set of constraints to be optimized or enforced. We further claim that techniques in (preference-based) planning can provide a computational basis for the development of effective, state-of-the-art techniques for generating customized compositions of Web services. To evaluate our claim, we characterize the Web service composition problem with customization as a non-classical planning problem, exploit and advance preference specification languages and preference-based planning, develop algorithms tailored to the Web service composition problem, prove formal properties of these algorithms, implement proof-of-concept systems, and evaluate these systems experimentally. While our research has been motivated by Web services, the theory and techniques we have developed are amenable to analogous problems in such diverse sectors as multi-agent systems, business process modeling, component software composition, and social and computational behaviour modeling and verification.

Web services provide a standardized means of publishing diverse, distributed applications. Increasingly, corporations are providing services or programs within and between organizations either on corporate intranets or on the cloud. Many of these services can be composed together, ideally automatically, to provide value-added service. Automated Web service composition is an example of such automation where given a specification of an objective to be realized and some knowledge of the state of the world, the problem is to automatically select, integrate, and invoke multiple services to achieve the specified objective. A popular approach to the Web service composition problem is to conceive it as an Artificial Intelligence planning task. This enables us to bring to bear many of the theoretical and computational advances in reasoning about actions to the task of Web service composition. However, Web service composition goes far beyond the reaches of classical planning, presenting a number of interesting challenges relevant to a large body of problems related to the composition of actions, programs, and services. Among these, an important challenge is generating not only a composition, but a high-quality composition tailored to user preferences. In this thesis, we present an approach to the Web service composition problem with a particular focus on the customization of compositions. We claim that there is a correspondence between generating a customized composition of Web services and non-classical Artificial Intelligence planning where the objective of the planning problem is specified as a form of control knowledge, such as a workflow or template, together with a set of constraints to be optimized or enforced. We further claim that techniques in (preference-based) planning can provide a computational basis for the development of effective, state-of-the-art techniques for generating customized compositions of Web services. To evaluate our claim, we characterize the Web service composition problem with customization as a non-classical planning problem, exploit and advance preference specification languages and preference-based planning, develop algorithms tailored to the Web service composition problem, prove formal properties of these algorithms, implement proof-of-concept systems, and evaluate these systems experimentally. While our research has been motivated by Web services, the theory and techniques we have developed are amenable to analogous problems in such diverse sectors as multi-agent systems, business process modeling, component software composition, and social and computational behaviour modeling and verification.

<p style="text-align: justify;">U okviru doktorske disertacije predstavljen je profil modela domena za katastar<br />nepokretnosti u Srbiji, kao i model servisa kojim se opisuju procesi u katastru<br />neophodni za uspe&scaron;no i efikasno izvr&scaron;avanje poslova. U tu svrhu izvr&scaron;en je pregled<br />stanja postojećeg informacionog sistema katastra nepokretnosti u Srbiji, izvr&scaron;ena je<br />analiza postojećih problema i koraka koje je neophodno sprovesti kako bi se izvr&scaron;ilo<br />unapređenje i povećala efikasnost poslovanja. Prikazana je studija primenljivosti ISO<br />19152 standarda na katastar nepokretnosti u Srbiji. Rezultat je profil modela domena<br />za katastar nepokretnosti kojim se obezbeđuje interoperabilnost sistema. Takođe su<br />predstavljeni poslovni procesi u katastru i definisana je njihova hijerarhijska<br />organizacija. Na osnovu dobijenih procesa predložen je model servisa za katastar<br />nepokretnosti u Srbiji. Model servisa obuhvata servise poslovanja katastra<br />nepokretnosti, uslužne servise prema različitim korisnicima i geoprostorne servise.<br />Potom je izvr&scaron;ena verifikacija modela servisa kroz studiju slučaja upotrebe definisanih<br />servisa.</p>

Academic fulltext search engine Egothor has recently became starting point of several thesis aimed on searching. Until now, there was no solution available to provide robust set of web content processing tools. This master thesis is aiming on design and implementation of distributed search system working primary with internet sources. We analyze first generation components for processing of web content and summarize their primary features. We use those features to propose architecture of distributed web search engine. We aim mainly to phases of data fetching, processing and indexing. We also describe final implementation of such system and propose few ideas for future extensions.

La collaboration entre organisations est l’un des principaux enjeux de l’écosystème industriel actuel. L’établissement d’une telle collaboration doit être réactive, afin de saisir les différentes opportunités, et flexibles, pour pouvoir s’adapter aux changements dans la collaboration. Pour cela, ces collaborations doivent être supportées par un système d’information (SI) dédié, en charge de fournir l’interopérabilité entre les différents SI des partenaires et capable de gérer les spécificités de la collaboration. Le projet MISE (Mediation Information System Engineering) propose une approche dirigée par les modèles permettant à l’utilisateur de concevoir un Système d’Information de Médiation (SIM) adapté au support de cette collaboration. Deux étapes sont au coeur de la conception de ce SIM : la génération du processus métier collaboratif depuis une description de la situation (niveau abstrait) et sa transformation en un système exécutable (niveau concret). Ce manuscrit s’intéresse à cette seconde phase et tente, à l’aide de technologies basées sur la connaissance, de réconcilier ces modèles métiers avec les services techniques disponibles. Après une étude du besoin et des méthodes existantes d’apport sémantique pour les différents niveaux d’abstraction, nous faisons le choix de nous intéresser aux standards SAWSDL et WSMO-Lite au niveau des services et nous proposons un nouveau mécanisme d’annotation sémantique au niveau des processus métier (appelé SABPMN), faute de standard reconnu. Les informations sémantiques ajoutées aux modèles sont ensuite exploitées lors de la transformation des processus métier en workflows exécutables proposée ici. Cette transformation se déroule alors en trois phases : (i) on recherche pour les différentes activités métier du processus le ou les service(s) qui répond(ent) au besoin métier exprimé à l’aide de mécanismes de sélection et de composition de services ; (ii) on génère pour chaque service à invoquer la transformation de données nécessaire pour garantir une bonne communication avec les autres composants ; (iii) une fois ces informations validées par l’utilisateur, on génère les fichiers nécessaires à l’exécution de ce processus sur la plateforme collaborative. Les résultats de cette thèse s’inscrivent aussi au sein du projet FUI ISTA3 (Interopérabilité de 3ème génération pour les Sous-Traitants de l’Aéronautique) qui se propose d’améliorer l’interopérabilité de la chaine logistique des sous-traitants aéronautiques de l’Aerospace Valley afin de faciliter la co-conception. Une implémentation des différents mécanismes proposés a été réalisée et est disponible sous la forme d’un prototype fonctionnel open-source. / Collaboration bewteen organisations is one of nowadays main stakes in industrial ecosystem. Establishment of such collaboration must be reactive, in order to take avantage of opportunities, and flexible, in order to adapt collaboration to context changes. In this view, such collaboration must be supported by a dedicated Information System (IS), responsible for ensuring interoperability between partner’s IS and able to manage collaboration specificities. MISE project (Mediation Information System Engineering) provides a model-driven engineering approach dedicated to design a Mediation Information System (MIS) which supports this collaboration. Two steps are involved in the MIS design : generation of business processes from the description of the collaborative situation (abstract level) and transformation of these process models into an executable system (concrete level). This PhD thesis takes interest in the second level trying to match those business models with available technical services, thanks to knowledge based technologies. First, we studied our semantic needs and existing methods of semantic annotation for models from both business and technical levels. We chose SAWSDL and WSMOLite standards for service annotations whereas we provided a new semantic annotation mechanism for business processes (called SABPMN), in the absence of existing standard. Added semantic information is then used during the business processes to executable workflows transformation. This transformation is performed in three steps : (i) for each activity involved in business processes we search for technical services which fit our business needs thanks to our service selection and composition mechanisms ; (ii) we generate for each selected service the required data transformation to ensure correct communication with other components ; (iii) once this information validated by user, we generate technical files expected by the collaborative platform to execute those processes. Those results are in line with the FUI ISTA3 project (3rd generation of Interoperability for Aeronautics Sub-contracTors) which focuses on improving supply chain interoperability for aeronautics sub-contractors of Aerospace Valley in order to facilitate co-design. All proposed transformation and matchmaking mecanisms are implemented as open-source functional prototypes.

Cette thèse traite de l’établissement d’une plateforme logicielle nommée DaWeS permettant le déploiement et la gestion en ligne d’entrepôts de données alimentés par des données provenant de services web et personnalisés à destination des petites et moyennes entreprises. Ce travail s’articule autour du développement et de l’expérimentation de DaWeS. L’idée principale implémentée dans DaWeS est l’utilisation d’une approche virtuelle d’intégration de données (la médiation) en tant queprocessus ETL (extraction, transformation et chargement des données) pour les entrepôts de données gérés par DaWeS. A cette fin, un algorithme classique de réécriture de requêtes (l’algorithme inverse-rules) a été adapté et testé. Une étude théorique sur la sémantique des requêtes conjonctives et datalog exprimées avec des relations munies de limitations d’accès (correspondant aux services web) a été menée. Cette dernière permet l’obtention de bornes supérieures sur les nombres d’appels aux services web requis dans l’évaluation de telles requêtes. Des expérimentations ont été menées sur des services web réels dans trois domaines : le marketing en ligne, la gestion de projets et les services d’aide aux utilisateurs. Une première série de tests aléatoires a été effectuée pour tester le passage à l’échelle. / The role of data warehouse for business analytics cannot be undermined for any enterprise, irrespective of its size. But the growing dependence on web services has resulted in a situation where the enterprise data is managed by multiple autonomous and heterogeneous service providers. We present our approach and its associated prototype DaWeS [Samuel, 2014; Samuel and Rey, 2014; Samuel et al., 2014], a DAta warehouse fed with data coming from WEb Services to extract, transform and store enterprise data from web services and to build performance indicators from them (stored enterprise data) hiding from the end users the heterogeneity of the numerous underlying web services. Its ETL process is grounded on a mediation approach usually used in data integration. This enables DaWeS (i) to be fully configurable in a declarative manner only (XML, XSLT, SQL, datalog) and (ii) to make part of the warehouse schema dynamic so it can be easily updated. (i) and (ii) allow DaWeS managers to shift from development to administration when they want to connect to new web services or to update the APIs (Application programming interfaces) of already connected ones. The aim is to make DaWeS scalable and adaptable to smoothly face the ever-changing and growing web services offer. We point out the fact that this also enables DaWeS to be used with the vast majority of actual web service interfaces defined with basic technologies only (HTTP, REST, XML and JSON) and not with more advanced standards (WSDL, WADL, hRESTS or SAWSDL) since these more advanced standards are not widely used yet to describe real web services. In terms of applications, the aim is to allow a DaWeS administrator to provide to small and medium companies a service to store and query their business data coming from their usage of third-party services, without having to manage their own warehouse. In particular, DaWeS enables the easy design (as SQL Queries) of personalized performance indicators. We present in detail this mediation approach for ETL and the architecture of DaWeS. Besides its industrial purpose, working on building DaWeS brought forth further scientific challenges like the need for optimizing the number of web service API operation calls or handling incomplete information. We propose a bound on the number of calls to web services. This bound is a tool to compare future optimization techniques. We also present a heuristics to handle incomplete information.

The promise of service oriented computing, and the availability of Web services promote the delivery and creation of new services based on existing services, in order to meet new demands and new markets. As Web and internet based services move into Clouds, inter-dependency of services and their complexity will increase substantially. There are standards and frameworks for specifying and composing Web Services based on functional properties. However, mechanisms to individually address non-functional properties of services and their compositions have not been well established. Furthermore, the Cloud ontology depicts service layers from a high-level, such as Application and Software, to a low-level, such as Infrastructure and Platform. Each component that resides in one layer can be useful to another layer as a service. It hints at the amount of complexity resulting from not only horizontal but also vertical integrations in building and deploying a composite service. To meet the requirements and facilitate using Web services, we first propose a WSDL extension to permit specification of non-functional or Quality of Service (QoS) properties. On top of the foundation, the QoS-aware framework is established to adapt publicly available tools for Web services, augmented by ontology management tools, along with tools for performance modeling to exemplify how the non-functional properties such as response time, throughput, or utilization of services can be addressed in the service acquisition and composition process. To facilitate Web service composition standards, in this work we extended the framework with additional qualitative information to the service descriptions using Business Process Execution Language (BPEL). Engineers can use BPEL to explore design options, and have the QoS properties analyzed for the composite service. The main issue in our research is performance evaluation in software system and engineering. We researched the Web service computation as the first half of this dissertation, and performance antipattern detection and elimination in the second part. Performance analysis of software system is complex due to large number of components and the interactions among them. Without the knowledge of experienced experts, it is difficult to diagnose performance anomalies and attempt to pinpoint the root causes of the problems. Software performance antipatterns are similar to design patterns in that they provide what to avoid and how to fix performance problems when they appear. Although the idea of applying antipatterns is promising, there are gaps in matching the symptoms and generating feedback solution for redesign. In this work, we analyze performance antipatterns to extract detectable features, influential factors, and resource involvements so that we can lay the foundation to detect their presence. We propose system abstract layering model and suggestive profiling methods for performance antipattern detection and elimination. Solutions proposed can be used during the refactoring phase, and can be included in the software development life cycle. Proposed tools and utilities are implemented and their use is demonstrated with RUBiS benchmark.

Le sujet de thèse a été traité dans le cadre d’un Système d’Information d’Entreprise (SIE) contenant un grand volume d’informations, très diverses, circulant au sein d’un groupe avec une cinquantaine de filiales. Initialement, les sources informatiques de chaque entité stockaient des données structurées, suivant des logiques métiers locales. Les descriptions de ces sources, destinées prioritairement aux informaticiens, se trouvent dans des documents textuels. Elles ne visaient pas le partage et la compréhension des systèmes par les différents types d’acteurs métiers qui fournissent le contenu. C’est également le cas des référentiels métiers, qui contiennent des connaissances métiers fondamentales. Ainsi, la localisation d’informations pertinentes, permettent un aiguillage et un accès aisé aux sources qui répondent aux attentes et aux contraintes des acteurs métiers, devient une problématique principale du SI. Depuis une décennie, la SNCF vise à répondre à cette problématique par une démarche stratégique de gouvernance inscrite dans les processus de l’urbanisme du SI. Nous sommes concernés par mise sous contrôle des référentiels de données métiers, la standardisation et la simplification des échanges inter applicatifs. Malgré cette démarche, les initiatives de partage d’informations et des connaissances métiers restent ponctuelles, fortement dépendantes des motivations personnelles (et non pas métiers) d’acteurs éclairés du SI. Notre objectif est de fournir une vue stratégique sur le partage des connaissances des différents types d’acteurs du SI en favorisant leur collaboration dans le contexte du déroulement d’un processus, ou d’une activité métier. Pour y parvenir, nous proposons une démarche pour la construction d’une couche du SI en s’appuyant sur de nouveaux concepts fonctionnels : le "référentiel de référentiels" et les "connecteurs a priori". Le premier correspond à un référentiel transverse par rapport à un périmètre métier. Le second correspond à des connexions logiques assurant une interopérabilité entre les applications qui ne sont pas conçues pour cohabiter. D’un point de vue technologique, le "référentiel des référentiels" prend ses fondements dans la modélisation et le stockage des connaissances par les démarches sémantiques. Les "connecteurs a priori" puisent leurs apports dans les Services Web Sémantiques. Le sujet de thèse développe des compétences comme les architectures middlewares orientées services, la modélisation sémantique de documents, la modélisation du SI et les techniques de Recherche d’Information (RI). Ce sont autant de sujets qui s’intègrent dans le projet scientifique de l’équipe DRIM (Distribution et Recherche d'Information Multimédia) du département « Données, Connaissances et Services » du laboratoire LIRIS (Laboratoire d’InfoRmatique en Images et Systèmes d’Informations), CNRS UMR 5205. / This thesis came about a very large and complex Enterprise Information System (EIS) containing a huge amount of information that moves through a company consisted of a main group and about fifty subsidiaries. At the beginning, computer science resources of each business unit stored structured data, according to a local business logic. The descriptions of these sources, intended first of all for computer specialists, were saved in text documents. They were not meant to help system sharing and understanding by different types of actors, who provide the business content. It's also true for the enterprise repositories, which contain fundamental business knowledge. Thus, finding the relevant information allowing fast and easy access to sources that meet the expectations and constraints of business actors, became a main problematic of IS. Since ten years, our company aims to address this problem by a strategic approach of IS governance included in the process of the IS planning. We are involved in the activity of business data repositories brought under control and information exchanges standardization and simplification between applications. Our goal is to provide a strategic view of knowledge sharing by promoting the IS actor collaboration in a business process context, or in business activity. To achieve this, we propose an approach for the construction of a layer of the IS based on new functional concepts: the "Reference Enterprise Repository (RER)" and " a priori connectors ". The first is about a transverse enterprise repository corresponding to a business context. The second is logical connections ensuring interoperability between applications that weren’t designed to coexist. From a technological point of view, the RER is based on semantic modelling and the knowledge representation. The "a priori connectors" involve integration technologies of Semantic Web Services. The thesis develops skills such as service-oriented middleware architectures, modelling semantics of documents, modelling IS and Information Retrieval (IR) techniques. All these subjects are part of the DRIM (Distribution and Multimedia Information Retrieval) team’s scientific project of the Department "Information, Knowledge and Services' at the LIRIS (Laboratoire d'Informatique en Images and Systems information), CNRS UMR 5205.