中国工业企业统计-unsd.ppt

Comments on SIEC by theExpert Group on International Economic and Social Classifications UNSD Review of classifications According to general criteria defined in: Best practice guidelines for developing international statistical classifications These criteria are being applied to all international classifications Determine if a classification can be a member of the International Family of Classifications General remarks A classification provides exhaustive building blocks and an aggregation structure for a defined scope of objects Not just a flat list of items Building blocks are mutually exclusive Defined using consistent criteria Different levels of the classification should have statistical application Classifications are typically more aligned with data presentation than collection Do not have to fully reflect contents of a questionnaire EG comments on SIEC Primary use of the classification Improved from earlier draft How does SIEC act as guide for other classification schemes? What is relationship to other standards? EG comments on SIEC Underlying concepts Scope refers to “products” But the concept of “energy products” is introduced late Should this be made clear in the title? Criteria for delineating categories are not always clear Differ from other classifications (e.g. CPC) Impacts criteria for aggregation Suggestions: More explicitly reflect primary vs. secondary EP Review criteria for subdividing waste: Renewable vs. non-renewable; organic vs. non-organic vs. mixed EG comments on SIEC Number of levels / coding structure / balance This is a major concern SIEC coding system seems excessive (a 10-character code for a classification with only 67 items at the most detailed level) Detailed categories appear necessary in only few areas Can a regrouping help? What is the use of top and intermediate groupings? What are criteria for grouping? Examples for alternative structures have been given; subdivisions for section 5 have been sugge