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The Application Research on Use of Improved Classification Model in Component Repository of Job Shop Scheduling

Author: GuoShuJie
Tutor: LiangXu
School: Dalian Jiaotong University
Course: Applied Computer Technology
Keywords: Component Library Component classification Dynamic weight of digital pattern facets
CLC: TP311.52
Type: Master's thesis
Year: 2008
Downloads: 16
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Abstract


Software reuse in software development solutions to avoid duplication of effort, is an effective means to solve software crisis. Component-based software development is currently the most promising method for software reuse, component library system is the core component-based software development. The classification and description of component is the core component library management system, the ability to effectively classify storage component will be related to component library management, query efficiency component, component understandable degree of maintainability and many other components a very important factor. In this paper, Dalian City Youth Fund Project \strong features in the study and management of existing components on the basis of classification, we propose a dynamic weight based digital faceted classification mode. This mode faceted classification made two improvements: ① by introducing coding - Atomic terminology lookup tables to the user's search terms and component library component description text sequence into a sequence consists of a sequence of numbers, thus effectively reducing the component retrieval matching difficult. ② new model faceted classification scheme for each facet introduces a decision by the customer focus of the dynamic weights. Faceted classification to classify the component library component, component retrieval when performing the various facets have the same fixed priority, this approach completely ignores the user needs of different facets preferences; while the introduction of dynamic weight can appropriately reflect this preference of customers, so that a high degree of user attention facet has a higher priority, thereby improving the precision of component retrieval rate. In order based on dynamic weight digitized classification component classification component library, make the component retrieval, the first search condition digitized description of the sequence is written as a row vector, and then use the component library component digitized describe the sequence column vector composed of a matrix combined according to the user for each facet of attention generated dynamic weight, according to the proposed terms of components between the correlation-based vector multiplication, it can be component retrieval process into an n-dimensional vector with n-dimensional matrix multiplication, the result of the multiplication by the individual member and the target vector correlation member sort feedback to the user can be a member list. The retrieval process with high efficiency and high precision characteristics, especially for small-scale field component library. By solving advanced shop scheduling intelligent optimization algorithm component library application practice, testing the improved classification in improving the retrieval efficiency and precision in terms of performance, evidence-based dynamic weight digitized faceted classification for small-scale field component library The feasibility.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer software > Program design,software engineering > Software Engineering > Software Development
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