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In computer science, an inverted index (also referred to as a postings list, postings file, or inverted file) is a database index storing a mapping from content, such as words or numbers, to its locations in a table, or in a document or a set of documents (named in contrast to a forward index, which maps from documents to content). [1]
The forward index is sorted to transform it to an inverted index. The forward index is essentially a list of pairs consisting of a document and a word, collated by the document. Converting the forward index to an inverted index is only a matter of sorting the pairs by the words. In this regard, the inverted index is a word-sorted forward index.
Pg2 - Forward index. Another method was proposed by Brin and Page for the Google search engine [3]. This method constructs an auxiliary data structure (forward index) which speeds up the modifications in the main (inverted) index. The term “modifications” means the real changes of the existing values stored in the index.
The resulting futures or forward curve would typically be downward sloping (i.e. "inverted"), since contracts for further dates would typically trade at even lower prices. [2] In practice, the expected future spot price is unknown, and the term "backwardation" may refer to "positive basis", which occurs when the current spot price exceeds the ...
The cost is a fixed, higher forward channel bandwidth. The American mathematician Richard Hamming pioneered this field in the 1940s and invented the first error-correcting code in 1950: the Hamming (7,4) code. [5]
These experimental data were inverted to obtain earth parameter values of = and =. For a more general case with large number of temperature observations, Fig. 4 shows the final linear forward model obtained from using the inverted values of and . The figure shows a good match between experimental and numerical data.
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An inverted curve has indicated a worsening economic situation in the future eight times since 1970. [10] In addition to potentially signaling an economic decline, inverted yield curves also imply that the market believes inflation will remain low. This is because, even if there is a recession, a low bond yield will still be offset by low ...