A Mixed Approach to Class Library Construction and Browser Design

• Main Authors: Chang, Chao Tsun, 張兆村
• Other Authors: Liu, Chung Shyan
• Format: Others
• Language: zh-TW
• Published: 1994
• Online Access: http://ndltd.ncl.edu.tw/handle/50953048602202321504

碩士 === 中原大學 === 資訊工程研究所 === 82 === In this thesis, a new approach, called mixed approach, is proposed for reusing components from software library. The mixed approach is essentially a hybrid of faceted index and free-text analysis method. The motivation of this research is an attempt to use both faceted index and automated retrieval approach in reusing software components from a C++ class library. A CIG, Conceptual Information Group, is a group of significant words that represent fuzzy concepts. An extended faceted classification allows the reuser to classify the class components with four CIGs. The reuser can present his required concepts with CIGs while retrieving. The evaluation of an information system includes parsing the target class source code and counting their frequency with the free-text analysis approach, which depends on these significant words described in CIGs and their frequencies. Then the system transforms the frequencies into standardized scores. An FCIG, Frequency of CIG, is the group of standardized scores of CIG. Candidate classes are selected from the library based on the degree of similarity between their CIGs and the required descriptions. Similarity is quantized by a standardized score of matched significant words. We implement a prototype browser to work with an assembled C++ class library, which is based on the mixed approach. Finally, we performed two experiments on retrieval to support our idea. A precision criterion is proposed. Also, some interested experimental results are discussed.