Knowledge base module

The system consists of three major modules the Control Module, the Knowledge Base Module, and the User Interface Module. Figure 1 shows a schematic of this architecture. Arrows between modules represent the flow of information. The flow of the session and dialogue with the user are controlled by the Control Module. The Knowledge Base Module provides all the necessary information for making test plans analysis items, sample types and purposes of analysis, analysis tasks and customers. All input and output, in various forms including menus, tables and graphics, are processed by the User Interface Module. 

Figure 8. A knowledge-based module for determining SIL requirements. 

The typical structure of an expert system is shown in Fig. 43.1. Three basic components are present in all expert systems the knowledge base, the inference engine and the interaction module (user interface). The knowledge base is the heart of the expert system. It contains the necessary expert knowledge and experience to act as a decision support. Only if this is correct and complete enough the expert system can produce meaningful and useful conclusions and advice. The inference... 

Table I. Sample probes used to develop knowledge base of Module 3 for specification of analytical HPLC column, and mobile phase constituents.

Module (Knowledge Base) Development. Future development of the ECAT system will involve, in chronological order ... 

A rule-based infrared spectra interpreter has been developed as a major module of the program. This module has been tested as a stand-alone system, and in conjunction with STIRS. The low rate of false positive assertions is encouraging, and work continues to reduce this rate still further by incremental refinement of the knowledge base. 

For this purpose, one needs to include into the knowledge base of the system, the different parameters and concepts that lead to those interpretations. One has to consider data on acidity, i.e., the number, density, force, and location of acid sites, and three-dimensional structural factors of the zeolite, i.e., the type of framework, and the characterization of pores, channels, and cavities by their form, internal volxune, opening,. .. One of our contributions is also devoted to the mechanisms of reaction. A module vdll allow to generate possible mechanisms for a given reaction catalyzed by one particular zeolite. This may be achieved by characterization of the guest molecules (reactants and products), as well as the transition states, and the reaction intermediates according to their shape, size, and volume, but also their chemical functions. 

DRUG KNOWLEDGE BASES AND THEIR CLINICAL MODULES... 

Examples of clinical functionality in drug knowledge bases are described below for Patient Education, Drug Interactions, and Prescriber Order Entry modules. Many other pharmaceutical decision support modules are also available and include Drug/Disease Contraindications,... 

The Drug Information Framework enables developers to build healthcare solutions faster, using the time-tested NDDF Plus knowledge base and critical decision-support modules. The Framework gives developers a choice of technologies and access layers, so it can adapt to most platforms, operating systems, development tools, and relational databases. Application environments can include the Internet client/server networks stand-alone desktops and handheld wireless devices. 

The fnzzy model is realized as the module of a logic conclusion in an expert system. The typical strnctnre of an expert system includes the database, mechanisms of logic outputs, knowledge base - user interface, mechanism of expert estimates, knowledge database support and explanation mechanism for management and policy makers. 

Inference Engine is a module of an expert system that performs reasoning using rules from the knowledge base and facts from the working memory to process them according to specihed business rules. 

Rule Management Module Allows creation, editing, and management of qualitative or quantitative rules stored in the system s knowledge base. 

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