2. 计算机
  3. Across　a　wide　variety　of　fields,　data　are　being　collected　and　accumulated　at　a　dramatic　pace.　There　is　an　urgent　need　for　a　new　

Across　a　wide　variety　of　fields,　data　are　being　collected　and　accumulated　at　a　dramatic　pace.　There　is　an　urgent　need　for　a　new　

admin2009-05-15  50
问题 Across　a　wide　variety　of　fields,　data　are　being　collected　and　accumulated　at　a　dramatic　pace.　There　is　an　urgent　need　for　a　new　generation　of　computational　theories　and　tools　to　assist　humans　in(96)useful　information(knowledge)　from　the　rapidly　growing(97)of　digital　data.　These　theories　and　tools　are　the　subject　of　the　emerging　field　of　knowledge　discovery　in　database(KDD).　At　an　abstract　level,　the　KDD　field　is　concerned　with　the　development　of　methods　and　techniques　for　making(98)of　data.　The　basic　problem　addressed　by　the　KDD　process　is　one　of　mapping　low-level　data(which　are　typically　too　voluminous　to　understand　and　digest　easily)　into　other　forms　that　might　be　more(99)(for　example,　a　short　report),　more(100)(for　example,　a　descriptive　approximation　or　model　of　the　process　that　generated　the　data),　or　more　useful(for　example,　a　predictive　model　for　estimating　the　value　of　future　cases).　At　the　core　of　the　process　is　the　application　of　specific　data-mining　methods　for　pattern　discovery　and　extraction.
选项 A、reason
B、sense
C、specification
D、summary
答案B
解析
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