XBRL Generalized Taxonomy Evaluation

XBRL (eXtensible Business Reporting Language) has been spreading anddeveloping since it was created by Hoffman in1998. Nowadays, a number ofcountries, institutions and organizations have already implemented or areimplementing XBRL. In2010, Ministry of Finance and National StandardsCommission jointly issued new corporate accounting standards, XBRL generalizedtaxonomy and technical specifications series of national standards. It signifies thecoming of accounting information era, which is based on the implementation ofXBRL.XBRL Taxonomy is the important foundation of the XBRL academic andpractical field, so the quality of taxonomy will influence the quality of XBRL reportdirectly. XBRL generalized taxonomy is based on the requirements of AccountingSystem for Business Enterprises instead of the corporate practice. Does XBRLgeneralized taxonomy meet the requirements of information disclosure in thecorporate practice? Whether the elements of XBRL generalized taxonomy can coverall the corporate financial information? Whether the elements of XBRL generalizedtaxonomy can be used effectively by enterprise? The questions of the its completenessand efficiency is the focus for the creator of taxonomy， XBRL financial reportprovider， disclosure regulator， market agency， investors and also the academicsociety.This dissertation sets the taxonomy evaluation as the key point and used acombination of theoretical analysis and empirical research methods，and integratedpractice induction, cluster analysis, trend analysis and linear regression validationmethods to research on the completeness and efficiency issues of XBRL generalizedtaxonomy. At first, this dissertation sets boundary of the concepts used followed bythe literature review of the research topic. Then it introduced the differences ofpractice approach and standards approach which is the two measures of taxonomycreation. After the research of XBRL generalized taxonomy completeness andefficiency and the study of the enterprises characteristics of the elements usage, suggests two problems of generalized taxonomy. One is Lack of efficiency, whichmeans the element usage rate of the generalized taxonomy is low and generalizedtaxonomy set some elements which are rarely used in practice. Another one is lack ofcompleteness, which means the element coverage rate of the generalized taxonomy islow and some corporate disclosure elements which are not established in generalizedtaxonomy. At last, this dissertation put forward the corresponding policy proposal tosolve the issue about the lack of completeness and efficiency.The main research conclusions are as follows:1. Prove the existence of completeness and efficiency lack in generalizedtaxonomy;2. The characteristics of the elements usage does not exist significantdifferences in the industry level;3. The characteristics of the elements usage exist significant differences inenterprise level.Following are the primary innovation of this dissertation:1. Using the practice induction method to evaluate the generalized taxonomy;2. Using cluster analysis and trend analysis on the industry, enterprise leveldifferences analysis;3. Introduce the XBRL dimensional modeling based on the knowledge ofMultidimensional database.