Factor estimating device, method and program recording medium therefor
AssigneeOMRON Corporation
InventorMasaki Ida
Life of this patent
Estimating the term…
Abstract
A factor estimating device estimates a factor from a defective result generated in a target system for diagnosis. A factor estimating process is carried out based on causality network recorded in an estimate knowledge recording part, and data on input items corresponding to conditions included in the causality network are obtained. Based on the obtained data, fitness factors are calculated, and certainty factor is obtained for each factor as representing the group of fitness factors corresponding to conditions included in the factor estimating paths. Influence factors showing the degree of influence of obtained data on input items are calculated, and data on input items with high influence factor are obtained.
Claims17
A factor estimating device for estimating a factor from a result generated in a target system for diagnosis;
- said factor estimating device comprising;
- an estimate knowledge recording part for recording factor estimating knowledge data that correlate one or more candidates for factor to each of a plurality of results that may be generated in said target system and show factor estimating paths from each of said results to each of said candidates corresponding to said each result as knowledge of a network structure having condition branches;
- inference processing means for carrying out factor estimating process based on said factor estimating knowledge data recorded in said estimate knowledge recording part;
- item data obtaining means for obtaining data on input item corresponding to conditions contained in said factor estimating knowledge data while said inference processing means carries out said factor estimating process;
- fitness calculating means for calculating fitness factors based on the data obtained by said item data obtaining means, said fitness factors being indicative of degrees to which said conditions are satisfied;
- certainty calculating means for calculating for each of the factors a representative value of an assembly of fitness factors corresponding to a condition contained in said factor estimating paths as certainty factor;
- and
- influence calculating means for calculating influence factor for each of input items indicative of degree of influence on the certainty factor when said data on said input item are obtained regarding a certain input item;
- wherein said item data obtaining means obtains data on a selected input item by considering the influence factors.
A program storage device readable by a machine, tangibly embodying a program of instructions executable by said machine to a factor estimating device for estimating a factor from a result generated in a target system of diagnosis;
- said factor estimating device comprising;
- an estimate knowledge recording part for recording factor estimating knowledge data that correlate one or more candidates for factor to each of a plurality of results that may be generated in said target system and show factor estimating paths from each of said results to each of said candidates corresponding to said each result as knowledge of a network structure having condition branches;
- inference processing means for carrying out factor estimating process based on said factor estimating knowledge data recorded in said estimate knowledge recording part;
- item data obtaining means for obtaining data on input item corresponding to conditions contained in said factor estimating knowledge data while said inference processing means carries out said factor estimating process;
- fitness calculating means for calculating fitness factors based on the data obtained by said item data obtaining means, said fitness factors being indicative of degrees to which said conditions are satisfied;
- certainty calculating means for calculating for each of the factors a representative value of an assembly of fitness factors corresponding to a condition contained in said factor estimating paths as certainty factor;
- and
- influence calculating means for calculating influence factor for each of input items indicative of degree of influence on the certainty factor when said data on said input item related are obtained regarding a certain input item;
- wherein said item data obtaining means obtains data on a selected input item by considering the influence factors.
A method of estimating a factor by a factor estimating device for estimating a factor from a result generated in a target system for diagnosis, said factor estimating device being provided with an estimate knowledge recording part for recording factor estimating knowledge data that correlate one or more candidates for factor to each of a plurality of results that may be generated in said target system and show factor estimating paths from each of said results to each of said candidates corresponding to said each result as knowledge of a network structure having condition branches, said method comprising:
- an inference step of carrying out factor estimating process based on said factor estimating knowledge data recorded in said estimate knowledge recording part;
- an item data obtaining step of obtaining data on input item corresponding to conditions contained in said factor estimating knowledge data during said factor estimating process in said inference step;
- a fitness calculating step of calculating fitness factors based on the data obtained in said item data obtaining step, said fitness factors being indicative of degrees to which said conditions are satisfied;
- a certainty calculating step of calculating for each of the factors a representative value of an assembly of fitness factors corresponding to a condition contained in said factor estimating paths as certainty factor;
- and
- an influence calculating step of calculating influence factor for each of input items indicative of degree of influence on the certainty factor when said data on said input item are obtained regarding a certain input item;
- wherein said item data obtaining means obtains data on a selected input item by considering the influence factors.
Dependencies are inferred from the claim text.