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  2. Lookup table - Wikipedia

    en.wikipedia.org/wiki/Lookup_table

    For a trivial hash function lookup, the unsigned raw data value is used directly as an index to a one-dimensional table to extract a result. For small ranges, this can be amongst the fastest lookup, even exceeding binary search speed with zero branches and executing in constant time .

  3. List of price index formulas - Wikipedia

    en.wikipedia.org/wiki/List_of_price_index_formulas

    The Marshall-Edgeworth index, credited to Marshall (1887) and Edgeworth (1925), [11] is a weighted relative of current period to base period sets of prices. This index uses the arithmetic average of the current and based period quantities for weighting. It is considered a pseudo-superlative formula and is symmetric. [12]

  4. Index-matching material - Wikipedia

    en.wikipedia.org/wiki/Index-matching_material

    Typical oils used have an index of refraction around 1.515. [2] An oil immersion objective is an objective lens specially designed to be used in this way. The index of the oil is typically chosen to match the index of the microscope lens glass, and of the cover slip. For more details, see the main article, oil immersion.

  5. Record linkage - Wikipedia

    en.wikipedia.org/wiki/Record_linkage

    Record linkage (also known as data matching, data linkage, entity resolution, and many other terms) is the task of finding records in a data set that refer to the same entity across different data sources (e.g., data files, books, websites, and databases).

  6. Fundamentally based indexes - Wikipedia

    en.wikipedia.org/wiki/Fundamentally_based_indexes

    Fundamentally based index funds have higher expense ratios than the traditional capitalization weighted index funds. For example, the Powershares fundamentally based ETFs have an expense ratio of 0.6% (the U.S. index ETF has an expense ratio of 0.39%) while the PIMCO Fundamental IndexPLUS TR Fund charges 1.14% in annual expenses. [25]

  7. Module:Sports results - Wikipedia

    en.wikipedia.org/wiki/Module:Sports_results

    This Lua-based module is meant to build match result tables. Note that this module is used extensively, so test potential changes rigorously in the sandbox and please ensure consensus exists before implementing major changes.

  8. Scapegoat tree - Wikipedia

    en.wikipedia.org/wiki/Scapegoat_tree

    The name Scapegoat tree "[...] is based on the common wisdom that, when something goes wrong, the first thing people tend to do is find someone to blame (the scapegoat)." [ 3 ] In the Bible , a scapegoat is an animal that is ritually burdened with the sins of others, and then driven away.

  9. Performance rating (chess) - Wikipedia

    en.wikipedia.org/wiki/Performance_rating_(chess)

    Performance rating (abbreviated as Rp) in chess is the level a player performed at in a tournament or match based on the number of games played, their total score in those games, and the Elo ratings of their opponents. It is the Elo rating a player would have if their performance resulted in no net rating change.