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An important performance index

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  • Index (search engine) — Search engine indexing collects, parses, and stores data to facilitate fast and accurate information retrieval. Index design incorporates interdisciplinary concepts from linguistics, cognitive psychology, mathematics, informatics, physics, and… …   Wikipedia

  • index — A specialized average. Stock indexes may be calculated by establishing a base against which the current value of the stocks, commodities, bonds, etc., will change; for example, the S&P 500 index uses the 1941 1943 market value of the 500 stocks… …   Financial and business terms

  • Index (database) — A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of slower writes and increased storage space. Indexes can be created using one or more columns of a database table,… …   Wikipedia

  • performance art —    As a category, performance art is hard to define, as it has referred to an extremely wide range of practices. If most have involved artists acting in real time and space in a planned event, there has been enormous variation in the duration of… …   Encyclopedia of contemporary British culture

  • Performance per watt — In computing, performance per watt is a measure of the energy efficiency of a particular computer architecture or computer hardware. Literally, it measures the rate of computation that can be delivered by a computer for every watt of power… …   Wikipedia

  • Swiss Market Index — Infobox Index name = Swiss Market Index caption = SMI performance between 1988 and 2008 foundation = 30 June 1988 operator = SWX Swiss Exchange exchanges = SWX Swiss Exchange constituents = 20 cap level = Large cap mc CHF 993.8 billion (2007)… …   Wikipedia

  • Bitmap index — A bitmap index is a special kind of database index.Bitmap indexes have traditionally been considered to work well for data such as gender, which has a small number of distinct values, e.g., male and female, but many occurrences of those values.… …   Wikipedia

  • Stock market index — A stock market index is a method of measuring a section of the stock market. Many indices are compiled by news or financial services firms and are used to benchmark the performance of portfolios such as mutual funds. Types of indices Stock market …   Wikipedia

  • Normalized Difference Vegetation Index — Negative values of NDVI (values approaching 1) correspond to water. Values close to zero ( 0.1 to 0.1) generally correspond to barren areas of rock, sand, or snow. Lastly, low, positive values represent shrub and grassland (approximately 0.2 to 0 …   Wikipedia

  • High-performance liquid chromatography — An HPLC. From left to right: A pumping device generating a gradient of two different solvents, a steel enforced column and an apparatus for measuring the absorbance. Acronym HPLC Classification Chromatography …   Wikipedia

  • American Customer Satisfaction Index — The American Customer Satisfaction Index (ACSI) is an economic indicator that measures the satisfaction of consumers across the U.S. economy. It is produced by the National Quality Research Center (NQRC) at the University of Michigan in Ann Arbor …   Wikipedia

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