Web service is a popular standard to publish services for users. However, diversified users need to access web service according to their particular preferences. Using agent and user ontology seems to provide such badly-needed personalized web service search. Further, mobile agent can be used in the search. However, how to deploy it in a mobile device with limited power and memory is an issue. In this paper, we present a mobile user agent architecture, in which a mobile agent migrates from one location server to another to execute a user task. Most importantly, user ontology with both static and dynamic information is defined by web ontology language (OWL), through which the location server can do personalized search of services. In addition, mobile agent reduces network load. Further, it can be dynamically deployed on a location server that connects to a mobile device. This reduces power and memory consumption.

Current keyword search by Google, Yahoo, and so on gives enormous unsuitable results. A solution to this perhaps is to annotate semantics to textual web data to enable semantic search, rather than keyword search. However, pure manual annotation is very time-consuming. Further, searching high level concept such as metaphor cannot be done if the annotation is done at a low abstraction level. We present a semi-automatic annotation system, i.e. an automatic annotator and a manual annotator. Against the web ontology language (OWL) terms defined by Protege, the former annotates the textual web data using the Knuth-Morris-Pratt (KMP) algorithm, while the latter allows a user to use the terms to annotate metaphors with high abstraction. The resulting semantically-enhanced textual web document can be semantically processed by other web services such as the information retrieval system and the recommendation system shown in our example.

The World Wide Web (WWW) has gained wide acceptance partially owing to the ease of writing web pages. Further, the semantic Web facilitates composing Web services in the form of Web ontology language for service (OWLS). However, OWLS requires assistance from agent for automatic discovery, composition, and invocation. This work presents an agent interaction description, based on Web ontology language (OWL), to confine agent communication within the foundation of intelligent and physical agents (FIPA) protocol. The description achieves dynamic OWLS service invocation and improves maintainability of agent program.

Process programs may change during enactment. The change of an enacting process program should be controlled. This paper describes process program change control in the CSPL (Concurrent Software Process Language) environment, which consists of techniques to (1) define change plans, (2) analyze and handle change impacts, and (3) resume process programs. Moreover, we provide an editor to guide process program change, with which the consistency between a change plan and the actual change can be enforced. We have used the environment in an experimental setting, and that experience shows that change control provided by the environment depends significantly upon process programs. If the dependencies among process components are well-specified in a process program, the change control mechanism will detect all the affected components when the process program is changed. Copyright © 2000 John Wiley & Sons, Ltd.

The paper presents a new process-centered environment called "concurrent software process language" (CSPL). CSPL takes a unique and innovative approach to integrate the object-oriented Ada95-like syntax (for its modeling power) with Unix shell semantics (for its enactment capability) in a software process language. The paper depicts the following new CSPL features: (1) object orientation, (2) multirole and multiuser, and (3) unified object modeling. Language constructs specially designed for software process such as work assignment statement, communication-related statements, role unit, tool unit, relation unit and so on, are, respectively, described. The related work of this diversified field is also surveyed in some depth. The CSPL environment prototype has been built. A CSPL process program for the IEEE Software Process Modeling Example Problem has been developed and enacted to demonstrate the capabilities of this environment.

This paper presents a classification and retrieval technique for object-oriented specification reuse, based on the assumption that existing specifications exhibiting behaviors similar to that of the system under development are appropriate for reuse. Existing specifications are classified and retrieved according to the semantic networks abstracted from their behaviors. Since semantic networks attach semantic meanings to certain degrees of detail, our technique is rather precise. Primary behavior is used to classify specifications because it can be obtained in the early phases of system analysis. Therefore, our technique allows early reuse. Moreover, subspecifications and classes of existing specifications are classified independently so that they can be retrieved for reuse separately. Thus, our technique encourages reusing subspecifications as well as classes. Since a subspecification is composed of classes and their relationships, reusing it corresponds to reusing all those classes and relationships. A technique that reuses subspecifications as well as classes is thus expected to save more time than those that reuse only classes.