3 results about "Fuzzy matrix" patented technology

The present application belongs to the technical field of equipment maintenance support decision, discloses a kind of equipment maintenance task priority evaluation method and system, the present application obtains maintenance task dataset and attribute evaluation set, based on scene discrimination parameter selection evaluation path;In hesitant fuzzy evaluation path, hesitant fuzzy matrix is constructed, the expected value and variance value are calculated, the weight optimization objective function is constructed based on attribute correlation degree to solve weight vector, normalization and comprehensive evaluation sorting are carried out;In analytic hierarchy process-approximate ideal solution evaluation path, hierarchical structure model and judgment matrix are constructed to calculate weight, standardized using Logistic function, determine positive and negative ideal solution, calculate closeness degree and sort, the present application realizes the unity of wartime rapid response and daily fine evaluation by the scene adaptive double-path evaluation mechanism, effectively solves the problem of insufficient description of decision ambiguity and lack of dynamic adaptation ability.

The application discloses a kind of based on fuzzy comprehensive evaluation's advantage seepage channel identification method, it is related to oil reservoir development technical field.The method includes: obtaining oil reservoir related data, screening evaluation index and constructing evaluation index system;Using analytic hierarchy process to determine the weight of each index, and obtaining weight vector;According to the distribution characteristics of each index, membership function is constructed;Membership degree is calculated to each index observation value, and fuzzy relation matrix is formed;The weight vector and fuzzy relation matrix are carried out fuzzy matrix multiplication, and the fuzzy comprehensive evaluation result vector is obtained;Whether there is advantage seepage channel in oil reservoir area is determined according to the comparison result of evaluation value and preset threshold value, and dynamic data and / or numerical simulation result is verified.The application can effectively handle the fuzziness and uncertainty of oil reservoir data, improve the accuracy and reliability of advantage seepage channel identification, and optimize oil reservoir development decision.

This invention belongs to the field of grouting evaluation technology, specifically relating to a method for evaluating the effect of grouting sealing and reinforcement. The method includes: S1. Determining the influencing factors of the grouting sealing and reinforcement effect; establishing a hierarchical evaluation level for grouting sealing based on these influencing factors; S2. Establishing a judgment matrix for the influencing factors based on the hierarchical evaluation level, assigning importance values ​​to each influencing factor, and calculating the weight vector of the judgment matrix; S3. Verifying the consistency of the judgment matrix; S4. Determining the influence weights of secondary evaluation indicators on the grouting sealing evaluation level, establishing an evaluation matrix through primary and secondary evaluation indicators, assigning specific numerical values ​​to the evaluation levels, and using the fuzzy matrix single-valued method to determine the sealing and reinforcement effect of fractured and fissured sudden water inrush. This improves the systematicness and accuracy of the grouting sealing and reinforcement effect evaluation method.