Zakir Laliwala

Semantic and Rules Based Event-Driven Dynamic Web Services Composition for Automation of Business Processes

Web services and service-oriented architecture are emerging distributed computing paradigms to publish and access software components as services. Various enterprises now publish their business as Web services. Business processes of these enterprises involved in B2B and B2C transactions require composition of distributed heterogeneous services to accomplish a task. Business processes are complex, dynamic and event-driven. Dynamic composition and automation of complex business processes are becoming active areas of research in this field. Interoperable integration, immaturity, lack of semantic support amongst standards, scalability and middleware support are the challenges involved when business processes are evaluated at national scale. In this paper we propose semantic and rule based event-driven service-oriented architecture for automation of business processes. Semantic provides knowledge and vocabulary of domain and ECA rules are designed to generate the composition schema automatically and dynamically according to the events. We have taken real-life example of agricultural business for demonstration of our architecture

Architecture of sensor based agricultural information system for effective planning of farm activities

The effectiveness of decision-making in agriculture domain can be improved by integrating current local environmental conditions with agricultural information system (AIS). To achieve this objective a series of functional blocks is proposed; which involves collection of environmental parameters from the farm, merging data from multiple sensors, communicating the collected data to the application server, extracting required information, defining ETL process, integration with ancillary data, analysis and presentation services. Web service based architecture comprising of distributed components is proposed to support the computational need. The proposed architecture extends analytical capabilities of end users with the help of multi dimensional expressions and OLAP.

Event-driven Service-Oriented Architecture

Business processes are event-driven and required set of tasks to be executed to fulfill the goal. Event-driven business process model by representing process as conceptual process flows. Business process required composition of services and execution of services as per the event. Events are responsible to change the state of process so we can model the business process based event and state. Web services (WS) is emerging technology to publish, discover and invoke the software component as services. SOA is a conceptual architecture for building integrated, loosely coupled, interoperable distributed heterogeneous enterprise application by using services as building blocks. Existing service-oriented computing standards and technologies are not fully supporting event-driven business process where event-driven composition, security, state and transaction management is highly recommended. Because of the limitation of current standards do not support event-driven modeling and implementation of event-driven process. We proposed Event-driven SOA (EDSOA) as an extension of SOA to model the event-driven process chains and to achieve event-driven automation of business process. In this paper we have given Event-driven SOA lifecycle and also demonstrate its realization with the of prototype implementation of real-life Agricultural Marketing scenario.

Semantic and Rule Based Event-driven Services-Oriented Agricultural Recommendation System

Agricultural Information Systems (AIS) are rich sources of information being created, maintained and published for the benefit of farmers and agroprofessionals. Ongoing research has generated knowledge regarding best practices in various aspects for farming practices to improve the yield. On the other hand, advancements in information technology and sensor technology have enabled new avenues of information for informed decisions and to utilize near real-time monitoring of data to provide effective recommendations. Even in this scenario, finding, extracting and integrating information from distributed heterogeneous sources of AIS and assimilating with realtime events like change in climatic conditions, change in market etc have raised interesting issues. We need a mechanism to collect and integrate information from scattered sources according to events and to notify the end-users with precise recommendations according to user context, location and requirements. In this paper, we propose a semantic and rule based event-driven Services- Oriented Architecture to facilitate the seamless and meaningful information integration and interoperation of distributed and heterogeneous web hosted AIS services to deliver personalized recommendation driven by real-time events and user preferences.

Towards agricultural marketing reforms: Web services orchestration approach

This research paper demonstrates Web services based business process management system, developed to aid marketing of agricultural produce. For achieving relevance to real-life practice, we carefully follow the business process suggested in model act that is planned for implementation in all the Agricultural Produce Marketing Committees (APMC) throughout India. Our proposal exposes various business functionalities explained in the act, in the form of Web services that can also utilize the existing IT infrastructure of the APMCs. With the help of above mentioned and any other external Web services, a trader can execute a complete trading business process. We follow Web service orchestration specifications to achieve our objectives. We also demonstrate a complete business process that is initiated by a farmer with a mobile PDA involving trade of an agricultural produce in the market place.

Semantics based Event-driven Publish/Subscribe Service-Oriented Architecture

The rapid progress of Information and Communication Technology has dissolved many technical and social barriers. Publishing, storing, updating and even accessing information through wireless devices is no longer a significant problem. As information increases, finding, sharing and integrating information from distributed heterogeneous sources become a major issue. The challenge is no longer in providing information anytime anywhere but in providing context and location aware personalized information. We need a mechanism that allows to collect and to fuse the information according to the requirements of user. In this paper, we have proposed a semantics based event-driven publish/subscribe services-oriented architecture to facilitate the seamless and meaningful information integration and interoperation of distributed and heterogeneous Web hosted services and to deliver personalized context and location-based information on wireless resources constrained devices

Semantic based Service-Oriented Grid Architecture for Business Processes

B2B and long running B2C process is a complex business process that contains a set of services, state and transaction management, and involves notification of various events occurring during the execution of a process. Business processes are driven by events and each process should be capable to handle the dynamic nature of enterprise and business partners like change in the strategies, policies and exception handling. Execution of a business process at regional or national scale involves diversity in products, terminology and processes involved to carry out a complete business activity. Complete execution of a process requires dynamic composition of distributed services based on events. Heterogeneity, dynamic nature and lack of knowledge among business partners demand a scalable architecture, which can provide seamless interoperable integration of distributed heterogeneous services and automation of business processes with the management of state and transaction, notification of various events, and execution and monitoring of a process. In this paper, we have proposed semantic based service-oriented grid architecture to demonstrate how semantics can be employed in SOA to deliver common vocabulary, knowledge, and automation of a business process and how grid middleware can be used to provide state, transaction, notification, scalability, and execution and monitoring of business processes

Event-Driven Dynamic Web Services Composition: From Modeling to Implementation

Web services and service-oriented architecture are emerging distributed computing paradigms to publish and access software components as services. Various enterprises now publish their business as Web services. Business processes of these enterprises involved in B2B and B2C transactions require composition of distributed heterogeneous services to accomplish a task. Business processes are complex, dynamic and event-driven. To capture the dynamic nature of business process we need to choreograph and orchestrated the business partners and the task involve in the process. With the development of standard like Web services resource framework and Web services notification, Web services now become stateful and now supporting event and notification. To model the Web services based event-driven composition and business process both event and state should be considered. In this paper we propose event calculus and BPEL based business process modeling and composition. We propose semantic based service-oriented grid architecture for implementation of event-driven business processes

Integrating Stateful Services in Workflow

Long running business processes require composition of services for task accomplishment. BPEL provide a mechanism to model business workflow among collaborating Web Services distributed across organizations. For effective execution and consistent outcomes from such composite services in a loosely coupled environment, management of state, transaction, notification and execution monitoring are the key requirements. After the emergence of WS-RF, stateful Web services have become integral part of Grid environment. Grid supports execution monitoring, resource sharing, integration and management of large-scale applications. Such capabilities are the backbone for any large-scale enterprise applications. Process oriented workflow execution in a grid environment with the support to manage state, transaction and notification is a challenging issue. In this paper we have proposed architecture to achieve integration of stateful services for a grid workflow. Development of stateful services is based on WS-RF specification to build services to support state management, transaction, notification and execution monitoring of a business process in a large-scale grid environment.

Service grouping and group notification in grid business process

Enterprises are becoming more collaborative, distributed, and heterogeneous with the advancement of Information and Communication Technology (ICT). As a result, business processes require integration with distributed heterogeneous services. Business process requires one or more services to fulfill the functionalities. Business processes are event-driven and change state frequently during the life cycle. Business process are running in parallel and interacting with multiple services, partners, and customers as per the requirements and policy. There is a need to aggregate information from multiple resources or services according to policy, to provide better query, search, and group notification. In this paper, we have proposed event-driven service-oriented grid architecture to achieve event-driven grouping and notifications for stateful services. We have proposed grid business process by evaluating different specifications related to grid and web services to capture the requirements of a dynamic business process. WS-ResourceFramework and WS-Notifications specifications are evaluated to build stateful services and to support state, transaction, and notification. WS-ServiceGroup specification is used to achieve aggregation of WS-Resources and services as well as group notification.