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An architecture for context-aware semantic Web services
, Article IEEE International Conference on Web Services, ICWS 2008, Beijing, 23 September 2008 through 26 September 2008 ; 2008 , Pages 779-780 ; 9780769533100 (ISBN) ; Abolhassani, H ; Technical Committee on Services Computing ; Sharif University of Technology
2008
Abstract
Context awareness in Web services is gaining momentum. Since it is not a trivial task, it suffers from lack of a general solution. In this paper, we introduce a novel approach for context-aware Semantic Web Services which is applicable for any environment. It is established based on composition of context provider Web Services and other context-aware Semantic Web Services. In addition, an extended version of the Semantic Web Service Ontology Language for Semantic Web services is introduced, in order to make it possible to find appropriate context-aware Semantic Web services based on available context information. So as to make it applicable for any environment, the solution does not hold any...
A Semantic Approach to Web Service Discovery
, M.Sc. Thesis Sharif University of Technology ; Sadighi Moshkenani, Mohsen (Supervisor) ; Safari, Mohammad Ali (Supervisor)
Abstract
Web service technology is becoming increasingly popular since it is very bene?cial in di?erent types of applications. Due to a dramatical increase in the number of developed web services, the service discovery process has become crucial for using web services e?ciently. Service is an adaptive, self-describing, modular application, which may be used in either web or an internal network. Service providers should o?er the services along with a description ?le called advertisement explaining the speci?cations and functionalities of the service. Traditional service discovery methods are based on syntax and keyword matching, which may not satisfy the requester’s desired requirements and will...
Towards a Knowledge-Based Approach for Creating Software Architecture Patterns Ontology
, M.Sc. Thesis Sharif University of Technology ; Habibi, Jafar (Supervisor) ; Abtahi, Ebrahim (Co-Advisor)
Abstract
Software architecture patterns present solutions for facing with architecture problems and help to document the architectural design decisions. But diversity, complexity, and required expertise for selecting an appropriate pattern, would cause some difficulties in using architectural patterns. Using an ontology for registration of architectural patterns playing an efficient role in solving those problems. But the mentioned difficulties make the process of constructing the architectural patterns ontology more complicated. This thesis proposes an approach that would consider the construction of the architectural patterns ontology from four perspectives in order to overcome the ontology...
Study and Improvement of a Model for Context-Aware Semantic Web Services
, M.Sc. Thesis Sharif University of Technology ; Abolhassani, Hassan (Supervisor)
Abstract
Web service plays an important role in software development. Since Web service can be used in small scale and large scale environments, many different entities may participate in each interaction. Regarding situation, a lot of information is available around these entities. This kind of information is called context. In some cases, context information is used to provide outputs which are called context-aware systems.
The main challenging issue in producing a context-aware system is context modeling and sharing. Semantic Web and its ontology languages are the most promising solution to context modeling. In pervasive computing many ontologies are proposed for this purpose, but little...
The main challenging issue in producing a context-aware system is context modeling and sharing. Semantic Web and its ontology languages are the most promising solution to context modeling. In pervasive computing many ontologies are proposed for this purpose, but little...
Web 1.0 to web 3.0 evolution: Reviewing the impacts on tourism development and opportunities
, Article Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 7 September 2010 through 8 September 2010, Brescello ; Volume 6529 LNCS , 2011 , Pages 184-193 ; 03029743 (ISSN) ; 9783642183478 (ISBN) ; Barzegar, Z ; Isaai, M. T ; Sharif University of Technology
Abstract
The most important event following the establishmenet of the Internet network was the Web introduced by Tim Berners-Lee. Websites give their owners features that allow sharing with which they can publish their content with users and visitors. In the last 5 years, we have seen some changes in the use of web. Users want to participate in content sharing and they like to interact with each other. This is known as Web 2.0. In the last year, Web 2.0 has reached maturity and now we need a smart web which will be accordingly be called Web 3.0. Web 3.0 is based on semantic web definition. Changing the way of using the web has had a clear impact on E-Tourism and its development and also on business...
Semi-automatic context-aware composition of semantic Web services
, Article 2nd International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies, UBICOMM 2008, Valencia, 29 September 2008 through 4 October 2008 ; 2008 , Pages 502-509 ; 9780769533674 (ISBN) ; Orang, M ; Abolhassani, H ; Sharif University of Technology
2008
Abstract
In many cases, atomic Semantic Web services are not able to provide requested functionalities. Therefore, in order to satisfy users' requests, the composition task is required on available atomic services. In addition, Context awareness in Web services is gaining momentum as the opportunity to benefit the interactions between human, applications and the environment. So it seems reasonable to use available context information in composition procedure to provide a composite Semantic Web service which is adapted to the context of participant Web services and the requester. In this paper, we introduce a novel approach for semi-automatic context-aware graph-based composition of Semantic Web...
Applying and inferring fuzzy trust in Semantic Web social networks
, Article 1st Canadian Semantic Web Working Symposium, CSWWS 2006, Quebec City, QC, 6 June 2006 through 6 June 2006 ; 2006 , Pages 23-43 ; 9780387298153 (ISBN) ; Bagheri, S ; Sharif University of Technology
Kluwer Academic Publishers
2006
Abstract
Social networks let the people find and know other people and benefit form their information. Semantic Web standard ontologies support social network sites for making use of other social networks information and hence help their expansion and unification, making them a huge social network. As social networks are public virtual social places much information may exist in them that may not be trustworthy to all. A mechanism in needed to rate coming news, reviews and opinions about a definite subject from users, according to each user preference. There should be a feature for users to specify how much they trust a friend and a mechanism to infer the trust from one user to another that is not...
Proposing a new Approach for Ontology Alignment Based on Graphcoincidence
, M.Sc. Thesis Sharif University of Technology ; Abolhassani, Hassan (Supervisor)
Abstract
An ontology is a formal description of a domain by definition a set of concepts and the relationships between those concepts. Ontologies defined by different applications usually describe their domains in different terminologies,even when they cover the same domain. Thus, we need to resolve the semantic heterogeneities problem and align terms in different ontologies. Ontology alignment plays the central role in these areas to identify correspondences among elements of two or more ontologies. It should be noted that,finding an optimize mapping between two ontologies with respect to search space is an NP-hard [6] problem.
In This thesis we focused on large ontologies and alignment among...
In This thesis we focused on large ontologies and alignment among...
A Framework For Situation Recognition in IOT Environments
, M.Sc. Thesis Sharif University of Technology ; Habibi, Jafar (Supervisor) ; Fazli, Mohammad Amin (Supervisor) ; Movaghar, Ali (Co-Supervisor)
Abstract
According to the increase of interest in the internet of things, the importance of understanding the ongoing situation in an environment and acting upon them is largely considered. Due to the massive size of sensors used in a smart environment, there are plenty of data manufactured every second. Therefore, an interpretation of this data is mandatory to obtain valuable information to comprehend the situation ongoing in an environment. Situation recognition can bring a better understanding of the interaction between the smart actuators and sensors with the living agents in the environments.This will enable the system to help people do their routines, save energy, and accomplish more...
A similarity measure for OWL-S annotated Web services
, Article 2006 IEEE/WIC/ACM International Conference on Web Intelligence, WI'06, Hong Kong, 18 December 2006 through 22 December 2006 ; 2006 , Pages 621-624 ; 0769527477 (ISBN); 9780769527475 (ISBN) ; Abolhassani, H ; Neshati, M ; Jamali, M ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2006
Abstract
Measuring semantic similarity of web services has several benefits and most of the proposed service discovery algorithms are based on measuring the similarity of the requested service with each of the advertised services. In this paper, we propose a method for measuring the similarity of web services which are annotated with OWL-S ontology. First, a semantic similarity measure for determining the similarity of OWL concepts is discussed and then based on this measure, the functional similarity of services is defined. Then it is showed that the precision of algorithms that only take into account the functional properties of services for measuring their similarity are low. Therefore the textual...
Towards a knowledge-based approach for creating software architecture patterns ontology
, Article 2016 International Conference on Engineering and MIS, ICEMIS 2016, 22 September 2016 through 24 September 2016 ; 2016 ; 9781509055791 (ISBN) ; Moaven, S ; Habibi, J ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2016
Abstract
Software architecture patterns present solutions for software architecture problems and help to document architectural design decisions. Complexity and variability of patterns, and the required expertise for selecting an appropriate pattern, would cause some difficulties in utilizing architectural patterns. Using an ontology for registering architectural patterns is an efficient step in solving those problems. However, the mentioned difficulties make the process of constructing the architectural patterns ontology even more complicated. This paper proposes an approach that considers the construction of the architectural patterns ontology from four perspectives in order to overcome this...
Ontology-based modelling and information extracting of physical entities in semantic sensor networks
, Article IETE Journal of Research ; 2018 , Pages 1-17 ; 03772063 (ISSN) ; Movaghar, A ; Rahmani, A. M ; Sharif University of Technology
Taylor and Francis Ltd
2018
Abstract
The semantic sensor web adds semantic web technologies such as ontology to sensor network. Semantic technologies can help the better management of query and data aggregation of the sensor network. So far, several ontologies have been presented for the semantic presentation of sensor networks concepts. However, applications and end-users require physical entities information rather than technical details and information regarding sensors and sensor network. This paper semantically models physical entities whose information is collected by sensor networks at a level higher than sensors and their observations. Hence, first, an ontology is presented for semantically modelling physical entities...
Ontology-Based modelling and information extracting of physical entities in semantic sensor networks
, Article IETE Journal of Research ; Volume 65, Issue 4 , 2019 , Pages 540-556 ; 03772063 (ISSN) ; Movaghar, A ; Rahmani, A. M ; Sharif University of Technology
Taylor and Francis Ltd
2019
Abstract
The semantic sensor web adds semantic web technologies such as ontology to sensor network. Semantic technologies can help the better management of query and data aggregation of the sensor network. So far, several ontologies have been presented for the semantic presentation of sensor networks concepts. However, applications and end-users require physical entities information rather than technical details and information regarding sensors and sensor network. This paper semantically models physical entities whose information is collected by sensor networks at a level higher than sensors and their observations. Hence, first, an ontology is presented for semantically modelling physical entities...
A Security Model based on Modal Description Logic for Semantic Web
, M.Sc. Thesis Sharif University of Technology ; Jalili, Rasool (Supervisor)
Abstract
With the growth of semantic-aware environments, such as semantic web, new security requirements are imposed in access control procedures. An access control model for semantic web should take the semantic relationships (in three scopes of subject, object and action) into account in its access decisions. Considering the advantages of logic based models and description logic foundation of semantic web, we use the description logic as a basis to propose access control models in this environment. On the other hand, in some applications, such as e-banking environments, policy definition with the constraint(s) based on previous users’ accesses might be crucial. To consider this aspect, in this...
Automatic Extraction of Semantic Web Service Composition Patterns
, M.Sc. Thesis Sharif University of Technology ; Habibi, Jafar (Supervisor)
Abstract
In today’s competitive world، web services have become more and more prevalent and their efficient discovery and composition in order to create novel functionalities is essential for variety of applications. Due to the large number of available services، the discovery of services is a difficult and time consuming task. Existing approaches in web services discovery and composition attempt to use simple web services while ignoring the use of once composed services. Reusing frequently used composite services can considerably increase performance of the entire system. Moreover، the advent of semantic web، as an effective solution of representing information interpretable by machines and none...
Semantic Based Web Service Classification
, M.Sc. Thesis Sharif University of Technology ; Sadighi Moshkenani, Mohsen (Supervisor)
Abstract
Web services are some kind of software applications which are available on the Web. Growing the popularity of Web services, led to increasing number of providers and as a result a great deal of Web services. This huge number of services made the searching and discovery tasks hard and effort-full jobs. In order to have a better discovery it is better to first classify Web services into some categories and then search in the relevant class. Although this classification can be done based on matching key words through the service registration information, such syntax-level service facilities can’t achieve the satisfaction results both in the precision and the recall sides. Human experience shows...
Designing Mechanism for Controlling Query on OWL Documents based on the MA (DL)2 Logic-based Authorization Model
, M.Sc. Thesis Sharif University of Technology ; Amini, Morteza (Supervisor)
Abstract
The emergence of semantic technology and its usage in different computational environments (especially the distributive environments) has increased the machine intelligence for more interoperability.This has resulted an abstraction (conceptual) layer above existing information and resources in these environments. Based on the unique characteristics of the semantic-aware environments, most of the proposed models for other environments are not applicable to this area, as they do not meet the security requirements of these environments. MA(DL)2-AM and SBAC are among the models that have satisfied a large portion of these requirements. Although documents are important assets of organizations...
Data Integration with Multiple Ontologies in Semantic Sensor Web
, M.Sc. Thesis Sharif University of Technology ; Abolhassani, Hassan (Supervisor)
Abstract
Sensor Observation Service (SOS) which is defined by Open Geospatial Consortium (OGC) Sensor Web Enablement group is a Web service specification in order to standardize the way sensors and sensor data are discovered and accessed on the Sensor Web. Multiple instances of this service can be implemented around the world, providing huge amount of data every moment. Each of these services operates in specific domain of knowledge (thematic), spatial and temporal dimensions. One way to reveal the underlying data over all of them is to provide an architecture for data integration to allow the user to query sensor data without the knowledge of the infrastructure components. In this research, a novel...
Supporting Transaction in Composed Semantic Web Services
, M.Sc. Thesis Sharif University of Technology ; Habibi, Jafar (Supervisor)
Abstract
internet can be seen as a revolution in human lives whose influences are obvious to everyone and nowadays it’s impossible to consider a world without it. most of people’s means of internet is the world wide web and this shows the importance of web. Web services as a modular and independent applications which can do most of our works through the web, improves its importance. This applications can be located, distributed and called through the web, most of organization’s activity which we can’t imagine internet without it. Semantic web can be considered as a new web architecture which integrates web content with semantics which can be understood by computers. the main motivation for semantic ...
Trust Seeking in Social Networks Based on Semantic Reasoning on Profiles
, M.Sc. Thesis Sharif University of Technology ; Sadighi Moshkenani, Mohsen (Supervisor)
Abstract
With the development of social network sites and wide use of Social Networks, information security and confidence of its components, became more and more important and turned into subject of many studies and researches. Relationship based on trust besides increasing productivity reduces risk of information transmission to non-related people. Although in the real world, semantic relations are the main basics for trust, but the existing methods of trusting in current sites have less attention to this point. To reduce such issues, firstly this research is going to use an added semantic understanding on top of the social networks structure. To do so, there is an inference engine in addition to a...