25 results for web service life cycle
Semantic Web services follow a life cycle, right from deployment to its invocation.
The life cycle of Semantic Web services comprises different stages like service modeling, service discovery, service definition and service delivery. The life cycle begins with modeling the web service and the service request by the provider and the consumer respectively. Web service descriptions are developed using models like OWL-S, WSMO. Service descriptions are used in the discovery stage on which discovery algorithms, matchmaking techniques are applied. Once a set of service providers are identified for a service requester, service definition takes place to select the concrete service. Finally, the concrete service is delivered to the service requester in the delivery phase.
Continue reading Semantic Web Service Life Cycle and Service Modeling
Ontologies classifying and describing services are called service ontologies. The currently used WSDL interface describes a service by specifying the operation name, inputs required for the service invocation, output of the service and its target address for invocation. Human intervention is required in this loop since the current architecture only addresses the syntactical aspects of Web services and lacks choreography mechanisms.
Continue reading Service Ontologies
There is a contradiction. The dream of the Semantic Web is beautiful, but few people are willing to realize it initiatively. The reason is primarily due to the pitiful nature of the selfishness of mankind; we prefer to enjoy contributions from others rather than contributing to others in the first hand. Some pessimistic ones of us, such as Stephen Downs and Mor Naaman, had even sentenced the Semantic Web to death due to this reason. Others of us, however, also cannot avoid but only try to solve this contradiction, actively and optimistically.
Continue reading Satisfying the Nature of Selfishness: The Key to Initiate the Semantic Web
Once again, the main idea behind the social network comes from a reversal process. We're dealing with an approach focused on the people (user-centric) and not on the applications allowing us to produce various data (text with blogs, pictures on Flickr, videos on YouTube, etc.). Rather than indicate to our contacts the numerous RSS feeds representing our "digital life", we are going to point at a unique address (our OpenID) whereby they will have access to any shared data. Even better, they will be able to add us in their contact list in order to automatically receive our new data (our "lifestreams"). To draw a parallel between an existing tool, adding an RSS feed to an aggregator like Google Reader comes down to adding a contact in our social network. But there is a major difference because this new approach simplifies things a lot while introducing many new fascinating possibilities.
Continue reading The Object Oriented Web - Part 3 - Social Networks
Swoogle describes itself as being the search engine for the Semantic Web. Swoogle crawls the web looking for RDF documents. At this time Swoogle offers the these services:
- Search ontologies and instance data
- Search terms (URIs that have been defined as classes and properties)
- Provide metadata of Semantic Web documents
- Support browsing the Semantic Web
- Archive different versions of Semantic Web documents
Continue reading Swoogle - the Semantic Web search engine
Natural Language Processing is very important to the Semantic Web. Language processing algorithm development will rise as better and smarter NLP agents are used to scour silos of raw textual data for semantic meaning. The addition of NLP Web services to the Web will give light to new and innovative mashups. An example mashup powered could be a service that uses a language processing agent to read a news article about the Apple iPhone and:
Continue reading Future value paradigms of the Semantic Web
A mashup is a hybrid Web application that combines complementary elements from two or more sources to create one integrated experience. Content used in mashups is generally sourced from a third party via an API or from Web feeds (e.g. RSS or Atom). Basically, the point is to take multiple data sources or Web services and turn them into something useful. The idea of combining Web services is not a new one, but it has gained immense traction in recent times and will likely continue to grow in popularity. In this entry I will be discussing both the promising future mashups offer and also potential pitfalls.
Continue reading Mashups: Opportunity, Innovation, and Money
The other day I was thinking, wouldn't it be interesting to see a site come out that essentially acts as a broker or mirror of metadata from other sites? You could go to this site, enter a URL and have the metadata from that page presented to you in clean, crisp XML. It would be even better if this was turned into a Web service and the API was free for anyone to use. I would imagine there would be quite a bit of mashing potential!
Continue reading Does the World Need a Metadata Extraction Service?
Jim Rapoza at eWeek has an opinion about gaming the Semantic Web regarding companies and developers that are using the Semantic Web label inappropriately. He makes a good point worth mentioning: When an innovative new idea comes along and gets popular enough it is commonplace to see vendors and companies take some of the concepts and strategies of the idea and try to adapt them, but are often not true to the idea's core principals (either purposely or accidentally).
Continue reading Misrepresenting the Semantic Web
Yihong Ding (contributing author of this blog) has posted the fourth installment to his thought provocing series A View of Web Evolution. In this installment Yihong states that there exist natural mappings between the stages of web evolution and the stages on human growth. He goes on to describe the life stages of web nodes beginning with Web 1.0 nodes as newborn babies, Web 2.0 nodes as pre-school kids, and Semantic Web nodes as educated children.
The entire series is an engaging read and I suggest to everyone that hasn't already read it to do so!
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