Small-world networks, distributed hash tables and the e-resource discovery problem

Resource discovery is one of the most important underpinning problems behind producing a scalable, robust and efficient global infrastructure for e-Science. A number of approaches to the resource discovery and management problem have been made in various computational grid environments and prototypes over the last decade. Computational resources and services in modern grid and cloud environments can be modelled as an overlay network superposed on the physical network structure of the Internet and World Wide Web. We discuss some of the main approaches to resource discovery in the context of the general properties of such an overlay network. We present some performance data and predicted properties based on algorithmic approaches such as distributed hash table resource discovery and management. We describe a prototype system and use its model to explore some of the known key graph aspects of the global resource overlay network - including small-world and scale-free properties

Web Operating System

computing and the area of operating system is Web Operating System (WOS). The objective of WOS is to deliver the full benefit of the World Wide Web. The WOS will support geographically distributed, highly available, incrementally scalable, and dynamically reconfiguring applications. WOS will include mechanisms for resource discovery, resource collaboration, persistent storage, remote process execution, resource management, authentication and security. This paper presents an overview of a typical WOS. It describes the WOS process, components, communication protocols, and resources. Additionally, the paper discusses all the resolved and unresolved issues and difficulties surrounding the implementation and design of WO

Web Operating System

computing and the area of operating system is Web Operating System (WOS). The objective of WOS is to deliver the full benefit of the World Wide Web. The WOS will support geographically distributed, highly available, incrementally scalable, and dynamically reconfiguring applications. WOS will include mechanisms for resource discovery, resource collaboration, persistent storage, remote process execution, resource management, authentication and security. This paper presents an overview of a typical WOS. It describes the WOS process, components, communication protocols, and resources. Additionally, the paper discusses all the resolved and unresolved issues and difficulties surrounding the implementation and design of WO

Web Operating System

computing and the area of operating system is Web Operating System (WOS). The objective of WOS is to deliver the full benefit of the World Wide Web. The WOS will support geographically distributed, highly available, incrementally scalable, and dynamically reconfiguring applications. WOS will include mechanisms for resource discovery, resource collaboration, persistent storage, remote process execution, resource management, authentication and security. This paper presents an overview of a typical WOS. It describes the WOS process, components, communication protocols, and resources. Additionally, the paper discusses all the resolved and unresolved issues and difficulties surrounding the implementation and design of WO

Web-based CINDI system : database design and implementation

This report presents the database design and implementation of the CINDI System (Concordia INdexing and DIscovery) based on the World Wide Web. It is part of the work to develop a Web-based CINDI system. The information resource is described using a metadata called a Semantic Header, which is stored in MySQL database management system. The Web based CINDI system is a 3-tier application that includes a Browser, an Apache Server and a MySQL Server. In the application, E-R (Entity-Relationship) modeling has been employed for the analysis and design of the MySQL Database Management system The hierarchy searching of subjects was implemented. The Apache Web Server is used to communicate between the Browser and the Databases subsystems using the HTTP protocol. The interface was developed using PHP script language

Web based CINDI system : graphical user interface design and implementation

As the World Wide Web grows, more and more information will be available on the Internet. However, how to organize such information and let people search for it efficiently is a big problem. As we know, there are a lot of search engines on the web. However, because of the lack of a standard indexing scheme and an informative query interface, they still cannot offer the Internet users a very efficient way to search for information. The CINDI (Concordia Indexing and Discovery) system provides a standard index scheme called Semantic Header, which is introduced by Dr. Bipin C. Desai et al. Moreover, the CINDI system provides an informative query interface for users and a resource registration interface for contributors. This report presents the design and implementation of the CINDI system based on the World Wide Web. It emphasizes on the graphical user interface (GUI) design and implementation for the CINDI system. UML (Unified Modeling Language) has been used in the design and analysis procedure of CINDI system. PHP has been used in the implementation of the user interface. MySql has been used to implement the database of the system. The Apache web server allows the clients' request and stores the useful information from the database by using HTTP protocol

Putting meaning into NETMAR – the open service network for marine environmental data

The open service network for marine environmental data (NETMAR) project uses semantic web technologies in its pilot system which aims to allow users to search, download and integrate satellite, in situ and model data from open ocean and coastal areas. The semantic web is an extension of the fundamental ideas of the World Wide Web, building a web of data through annotation of metadata and data with hyperlinked resources. Within the framework of the NETMAR project, an interconnected semantic web resource was developed to aid in data and web service discovery and to validate Open Geospatial Consortium Web Processing Service orchestration. A second semantic resource was developed to support interoperability of coastal web atlases across jurisdictional boundaries. This paper outlines the approach taken to producing the resource registry used within the NETMAR project and demonstrates the use of these semantic resources to support user interactions with systems. Such interconnected semantic resources allow the increased ability to share and disseminate data through the facilitation of interoperability between data providers. The formal representation of geospatial knowledge to advance geospatial interoperability is a growing research area. Tools and methods such as those outlined in this paper have the potential to support these efforts

Analisis dan Implementasi Algoritma Label Discovery untuk Mencari Struktur dan Karakteristik Halaman Web (Studi Kasus Halaman Web Lowongan Kerja)

ABSTRAKSI: Pada World Wide Web atau yang biasa dikenal dengan WWW memiliki berbagai jenis informasi yang terkandung didalamnya. Biasanya user akan menggunakan search engine atau mengikuti link terkait untuk menemukan informasi yang mereka butuhkan. Akan tetapi, pencarian dengan menggunakan search engine terkadang tidak efektif karena menghasilkan banyak data dan link terkait yang membutuhkan waktu tidak sedikit untuk menulusurinya satu persatu, bahkan kadangkala hasil yang keluar sama sekali tidak terkait dengan keyword yang user masukkan. Setelah diteliti ternyata halaman web yang memiliki informasi yang sama memiliki struktur yang sama pula, selain itu diketahui pula bahwa standar dalam menerbitkan halaman web yang tidak ketat menyebabkan si penulis dapat menggunakan kata atau pelabelan yang berbeda untuk halaman web yang memiliki informasi yang sama. Pada tugas akhir ini akan dibangun sebuah sistem yang dapat mengklasifikasi halaman web berdasarkan kelasnya dengan menggunakan algoritma label discovery. Pada awalnya algoritma label discovery (LDA) akan mencari label atau kata yang merepresentasikan kelas halaman web sehingga akan didapatkan struktur dari kelas halaman web yang diinginkan. Setelah struktur ditemukan maka akan digunakan untuk mengklasifikasikan halaman web. Hasil pengujian menunjukkan bahwa LDA dapat menemukan kata atau label yang merepresentasikan suatu kelas dan struktur yang dihasilkan dapat mengklasifikasi halaman web secara akurat.Kata Kunci : label discovery, struktur, klasifikasi, kelas, halaman web, fungsi kesamaanABSTRACT: The World Wide Web (WWW) provides vast resource for information of almost all types. Users commonly use search engine or follow related links to retrieve the information. However, searching information using search engine is not effective because it will provide tedious data and so many related links which are wasting time to read it one by one, even sometimes the result is not related at all to what have user entered. After experiment, it’s discovered that web pages that have same information will have same structure too, moreover due to loose standard of web page publishing, different authors can use different wordings (labels) which describe the same information. This thesis builds a system that can classify web pages by class using label discovery algorithm (LDA). First, LDA will find labels or words that represent class of web pages, so that would be obtained the structure of class, finally the structure will be used for classifying web pages. Testing results show that LDA can be used for finding labels or words that represent class of web pages and the structure obtained by this method can classify web pages accurately.Keyword: label discovery, structure, classification, class, web pages, similarity functio

Distributed resource discovery using a context sensitive infrastructure

Distributed Resource Discovery in a World Wide Web environment using full-text indices will never scale. The distinct properties of WWW information (volume, rate of change, topical diversity) limits the scaleability of traditional approaches to distributed Resource Discovery. An approach combining metadata clustering and query routing can, on the other hand, be proven to scale much better. This paper presents the Content-Sensitive Infrastructure, which is a design building on these results. We also present an analytical framework for comparing scaleability of different distribution strategies