Semantic Restful Service Composition Using Task Specification

2020 ◽  
Vol 30 (06) ◽  
pp. 835-857
Author(s):  
Shang-Pin Ma ◽  
Hsuan-Ju Lin ◽  
Ming-Jen Hsu
Keyword(s):  
Service Composition ◽  
Service Discovery ◽  
Latent Dirichlet Allocation ◽  
User Requirements ◽  
Logical Operation ◽  
Semantic Concepts ◽  
Task Specification ◽  
Restful Services ◽  
Application Developers ◽  
System Prototype

Existing Web API search engines allow only category-based browsing and keyword- or tag-based searches for RESTful services. In other words, they do not enable the discovery or composition of real-world RESTful services by application developers. This paper outlines a novel scheme, called Transformation–Annotation–Discovery (TAD), which transforms OpenAPI (Swagger) documents related to RESTful services into a graph structure and then automatically annotates the semantic concepts on graph nodes using Latent Dirichlet Allocation (LDA) and WordNet. TAD can then be used for service composition based on the user requirements specified in two modules: a service discovery chain and logical-operation-based composition. The service discovery chain uses the Hungarian algorithm to assess service interface compatibility in order to facilitate the retrieval of services capable of bridging the gap between specified user requirements and the discovered services. The logical-operation-based composition module identifies services that semantically fit the user requirements, based on the structure of the service flow. Those candidate services are then sent to service discovery chains to enable the simultaneous search for potential composition solutions. System prototype and experiment results demonstrate the feasibility and efficacy of the proposed scheme.

A P2P BASED ARCHITECTURE FOR SEMANTIC WEB SERVICE DISCOVERY

2011 ◽  
Vol 21 (07) ◽  
pp. 1013-1035 ◽  
Author(s):  
GIUSEPPE DI MODICA ◽  
ORAZIO TOMARCHIO ◽  
LORENZO VITA
Keyword(s):  
Service Discovery ◽  
Semantic Technologies ◽  
Query Routing ◽  
Web Service Discovery ◽  
Semantic Query ◽  
Discovery Service ◽  
Routing Mechanism ◽  
System Prototype ◽  
Semantic Web Service Discovery

In SOA environments, as the number of published Web Services grows, the provision of a robust, scalable and efficient discovery service is still an unresolved issue. In this paper we present a P2P-based infrastructure that leverages the semantic technologies to support a scalable and accurate service discovery process. The key concept of the presented idea is the creation of an overlay network organized in several semantic groups of peers, each specialized in answering queries pertaining to specific applicative domains. Groups are formed by clustering together peers offering services that are semantically related. A semantic query routing mechanism ensures the delivery of queries to the groups that are semantically "worth" to respond. In this paper the architecture details of the proposed solution is presented. A system prototype has also been implemented and validated through a case study deployed on the PlanetLab testbed.

Issues on the Compatibility of Web Service Contracts

2013 ◽  
pp. 154-188 ◽  
Author(s):  
Surya Nepal ◽  
John Zic
Keyword(s):  
Web Service ◽  
Service Composition ◽  
Large Scale ◽  
Service Oriented Architecture ◽  
Distributed Applications ◽  
Compatibility Conditions ◽  
Service Contract ◽  
Service Contracts ◽  
Service Oriented ◽  
Application Developers

In the Service Oriented Architecture (SOA) model, a service is characterized by its exchange of asynchronous messages, and a service contract is a desirable composition of a variety of messages. Though this model is simple, implementing large-scale, cross-organizational distributed applications may be difficult to achieve in general, as there is no guarantee that service composition will be possible because of incompatibilities of Web service contracts. We categorize compatibility issues in Web service contracts into two broad categories: (a) between contracts of different services (which we define as a composability problem), and (b) a service contract and its implementation (which we define as a conformance problem). This chapter examines and addresses these problems, first by identifying and specifying contract compatibility conditions, and second, through the use of compatibility checking tools that enable application developers to perform checks at design time.

Topology and Topic-Aware Service Clustering

2018 ◽  
Vol 15 (3) ◽  
pp. 18-37 ◽  
Author(s):  
Weifeng Pan ◽  
Jilei Dong ◽  
Kun Liu ◽  
Jing Wang
Keyword(s):  
Service Discovery ◽  
Clustering Algorithm ◽  
Latent Dirichlet Allocation ◽  
Empirical Evaluation ◽  
Single Type ◽  
Bipartite Network ◽  
Real World Data ◽  
Service Usage ◽  
Data Set ◽  
Service Clustering

This article describes how the number of services and their types being so numerous makes accurately discovering desired services become a problem. Service clustering is an effective way to facilitate service discovery. However, the existing approaches are usually designed for a single type of service documents, neglecting to fully use the topic and topological information in service profiles and usage histories. To avoid these limitations, this article presents a novel service clustering approach. It adopts a bipartite network to describe the topological structure of service usage histories and uses a SimRank algorithm to measure the topological similarity of services; It applies Latent Dirichlet Allocation to extract topics from service profiles and further quantifies the topic similarity of services; It quantifies the similarity of services by integrating topological and topic similarities; It uses the Chameleon clustering algorithm to cluster the services. The empirical evaluation on real-world data set highlights the benefits provided by the combination of topological and topic similarities.

DYNAMIC SERVICE COMPOSITION: A DISCOVERY-BASED APPROACH

2008 ◽  
Vol 18 (02) ◽  
pp. 199-222 ◽  
Author(s):  
JONATHAN LEE ◽  
SHANG-PIN MA ◽  
YING-YAN LIN ◽  
SHIN-JIE LEE ◽  
YAO-CHIANG WANG
Keyword(s):  
Service Composition ◽  
Service Discovery ◽  
Main Trend ◽  
Service Availability ◽  
Composite Service ◽  
Composite Pattern ◽  
Contract Net ◽  
Dynamic Service Composition ◽  
Service Oriented ◽  
Composite Services

Service-Orientated Computing (SOC) has become a main trend in software engineering that promotes the construction of applications based on the notion of services. SOC has recently attracted the researchers' attention and has been adopted industry-wide. However, service composition that enables one to aggregate existing services into a new composite service is still a highly complex and critical task in service-oriented technology. To enhance availability of composite services, we propose a discovery-based service composition framework to better integrate component services in both static and dynamic manner, including (1) to devise a notion of service availability especially for composition; (2) to develop a dynamic service composition (DSC) pattern for addressing the issues of service availability; and (3) to extend Contract Net Protocol (ECNP) to coordinate service discovery, composition and invocation based on the composite pattern. The main benefit of the proposed approach is better availability through attaching multiple candidate services for future binding.

scholarly journals Resource and service discovery in SOAs: A P2P oriented semantic approach

2011 ◽  
Vol 21 (2) ◽  
pp. 285-294 ◽  
Author(s):  
Giuseppe Di Modica ◽  
Orazio Tomarchio ◽  
Lorenzo Vita
Keyword(s):  
Service Discovery ◽  
Semantic Approach ◽  
Service Oriented Architectures ◽  
Technological Convergence ◽  
Service Oriented ◽  
Standardization Process ◽  
System Prototype ◽  
Grid Resources ◽  
Administrative Domains

Resource and service discovery in SOAs: A P2P oriented semantic approachAn intense standardization process is favouring the convergence of grids and Service Oriented Architectures (SOAs). One of the benefits of such technological convergence is that grid resources and applications can be virtualized by services and offered through the SOA paradigm. In the broad and interoperable scenarios enabled by the SOA, involving the participation of several grid infrastructures across many administrative domains, service discovery can be a serious issue. In this paper we present a P2P-based infrastructure that leverages semantic technologies to support a scalable and accurate service discovery process. The key concept of the presented idea is the creation of an overlay network organized in several semantic groups of peers, each specialized in answering queries pertaining to specific applicative domains. Groups are formed by clustering together peers offering services that are semantically related. The architecture details of the proposed solution are presented. A system prototype has also been implemented and validated through a case study deployed on the PlanetLab testbed.

Composition Oriented Semantic Relationships Mining Framework Research

2014 ◽  
Vol 513-517 ◽  
pp. 470-473 ◽  
Author(s):  
Zheng De Zhao ◽  
Yue Hui Cui ◽  
Jian Jun Li
Keyword(s):  
Web Services ◽  
Service Composition ◽  
Service Discovery ◽  
Search Space ◽  
Experimental Results ◽  
Business Logic ◽  
Semantic Relationships ◽  
Functional Clustering ◽  
Two Stages ◽  
Mining Algorithms

In order to improve the efficiency of service discovery and service composition, this paper proposes a Composition oriented Web services semantic relationships mining framework. Firstly, Web services need to be pretreated, which are filtered based on QoS; and then adopt the method of service functional clustering to generate service classes, which largely reduces the services search space and improve the efficiency of service discovery; Secondly, in order to excavate the semantic relationships between service classes that meet the business logic requirement, we need to set the composition rules between service classes; Finally, using two stages of mining algorithms to excavate the semantic relationships between service classes. Experimental results are given to validate the feasibility and validity of our framework.

scholarly journals Hybrid recommendation–based quality of service prediction for sensor services

2018 ◽  
Vol 14 (5) ◽  
pp. 155014771877401 ◽  
Author(s):  
Meiyu Wang ◽  
Leilei Shi ◽  
Lu Liu ◽  
Mariwan Ahmed ◽  
John Panneerselvan
Keyword(s):  
Wireless Sensor Networks ◽  
Quality Of Service ◽  
Sensor Networks ◽  
Service Discovery ◽  
Latent Dirichlet Allocation ◽  
Wireless Sensor ◽  
Service Recommendation ◽  
Allocation Model ◽  
Hybrid Recommendation

Wireless sensor networks are being the focus of several research application domains, and the concept of sensing-as-a-service is on the rise in wireless sensor networks. Large service repositories comprising more services and functionalities usually impose new challenges to users while identifying their preferred services and may incur higher costs. Thereby, service recommendation systems have become important and integral tools of service models to provide personalized products for consumers. However, many existing methods of sensor service recommendation focus only on service discovery. To this end, this article proposes a novel hybrid recommendation method, named new hybrid recommendation method. First, latent Dirichlet allocation model is used to compute the similarity of the latent topics of the services, and the user’s latent semantic themes are used to extract the potential interest services. Moreover, the relevance of neighbourhood services is considered, which can improve the accuracy of quality of service prediction. Experiments conducted on real datasets demonstrate that the proposed method is more accurate than the existing methods of service recommendation.

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