TECHNOLOGY OF METAONTOLOGY CREATION "MANUAL PULSE DEVICES

Abstract

The results of creation of metaontology "Manual pulse devices" are presented in the work. The main ideas and approaches for assessing the effectiveness of the process of acquiring knowledge are determined. Two types of tactics are described when creating metaontology "MPD". The aspects of formation of metaontology in accordance with IDEF5 requirements are considered. For the created metaontology "MPD", a descending structure was chosen. To objectify knowledge in the extraction process, a special procedure was used to filter the sequence of questions through special horizontal levels that corresponded to enlarged conceptual fragments of the concepts of the domain and provided the completeness of knowledge. The sequence of questions to the expert was constructed according to the scheme "from the general to the particular". With the right answers, the extraction of knowledge was terminated by the condition of achieving a lower level of ontology (undetermined concepts), if all the horizontal stages were also passed. If, however, an unsatisfactory answer was received from the expert in the course of the dialogue on a question that was correlated with the upper level of the ontology, then a transition was made at the appropriate horizontal level and the expert was asked the same type of attitude; if an unsatisfactory answer was received at one of the lower levels, then the transition was made to the upper level and the expert was asked a question related to the subsequent higher-level concept. If the process of extracting knowledge ended up with an "incidental" concept of the top-level ontology, this indicated the need to identify and involve additional experts in the knowledge discovery process. To verify the knowledge quality control processes, an approach to knowledge extraction was used, based on the objectification of the expert's assessment by automating the process of forming a set of questions and the procedure for its implementation, while complying with the completeness condition. At the same time, the simultaneous fulfillment of the conditions of completeness of coverage of the subject area and minimization of information redundancy was observed due to the construction of the mapping of metaontology into a formalized scheme of problem-oriented representation of the domain. As a result of the implementation of the structural-ontological approach, the process of extracting knowledge was optimized, and, thus, the overall effectiveness of creating metaontology was improved. With the support (development) of the metaontology "MPD", the automated application of knowledge was implemented, presented as a generalized algorithm for realizing this process. Metaontology "MPD" is presented in detail.