By Leonard Adelman
Knowledge-based structures are more and more present in a large number of settings and this instruction manual has been written to fulfill a particular want of their widening use. whereas there were many profitable functions of knowledge-based platforms, a few functions have failed simply because they by no means acquired the corrective suggestions that assessment presents for protecting improvement enthusiastic about the clients' wishes of their genuine operating surroundings. This instruction manual offers a conceptual framework and compendium of tools for appearing reviews of knowledge-based platforms in the course of their improvement. Its concentration is at the clients' and subject material specialists' overview of the usefulness of the approach, and never at the builders' checking out of the adequacy of the programming code. The instruction manual allows evaluators to systematically solution the next varieties of questions: Does the knowledge-based procedure meet the clients' job necessities? Is the approach effortless to take advantage of? Is the data base logically constant? Does it meet the mandatory point of workmanship? Does the method enhance functionality?
The authors have produced a instruction manual that may serve audiences: a software that may be used to create knowledge-based structures (practitioners, builders, and evaluators) and a framework that may stimulate extra examine within the region (academic researchers and students). to complete this, the guide is equipped round a conceptual framework that integrates the differing kinds of reviews into the approach of improvement strategy. the categories of questions that may be spoke back, and the equipment to be had for answering them, will swap in the course of the method improvement existence cycle. And all through this method, one must recognize what could be performed, and what cannot. it truly is this dichotomy that addresses wishes in either the practitioner and educational learn audiences.
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Additional resources for Handbook for Evaluating Knowledge-Based Systems: Conceptual Framework and Compendium of Methods
34, p. 3 Operational Prototype Figure 2-4 presents a schematic of the operational prototyping life cycle. Operational prototypes attempt to combine the best of throwaway and evolutionary prototyping approaches. A suitable portion of the system is constructed and incorporates only those features that are well known or understood. This initial version is then deployed to users at various locations. As users operate the system they will discover problems and otTer suggestions for solving them. The prototyper can develop "quick and dirty" features for implementing these improvements.
We will try to identify these research issues throughout the handbook, for one needs to know what can be done and what can't. Our vision throughout is that the handbook be a tool for practioners (developers and evaluators) and a stimulus for researchers and their students. INTRODUCTION 15 Chapter 2 reviews the literature with respect to different (a) development models, (b) evaluation dimensions, and (c) evaluation models. Chapter 3 presents our conceptual framework for evaluating knowledge-based system, and describes each of the five types of evaluation in more detail.
Consequently, we could have easily included a discussion of relevant evaluation dimensions and criteria within the review of each evaluation model. We have separated them to assist readers in (1) formulating evaluation questions and broader evaluation issues and, in turn, (2) selecting evaluation dimensions and criteria for defining them operationally. By grouping the review of dimensions and criteria into one section, we hope that readers will be better able to identiJY those that are most relevant to their evaluation context and needs.