Index

An index is an indirect shortcut derived from and pointing into a greater volume of values, data, information or knowledge. Index may refer to:

Business

Publishing

Database index

A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of additional writes and storage space to maintain the index data structure. Indexes are used to quickly locate data without having to search every row in a database table every time a database table is accessed. Indexes can be created using one or more columns of a database table, providing the basis for both rapid random lookups and efficient access of ordered records.

An index is a copy of select columns of data from a table that can be searched very efficiently that also includes a low-level disk block address or direct link to the complete row of data it was copied from. Some databases extend the power of indexing by letting developers create indices on functions or expressions. For example, an index could be created on upper(last_name), which would only store the upper case versions of the last_name field in the index. Another option sometimes supported is the use of partial indices, where index entries are created only for those records that satisfy some conditional expression. A further aspect of flexibility is to permit indexing on user-defined functions, as well as expressions formed from an assortment of built-in functions.

Index (statistics)

In statistics and research design, an index is a composite statistic – a measure of changes in a representative group of individual data points, or in other words, a compound measure that aggregates multiple indicators. Indexes summarize and rank specific observations.

Much data in the field of social sciences is represented in various indices such as Gender Gap Index, Human Development Index or the Dow Jones Industrial Average.

Item in indexes are usually weighted equally, unless there are some reasons against it (for example, if two items reflect essentially the same aspect of a variable, they could have a weight of 0.5 each).

Constructing the items involves four steps. First, items should be selected based on their face validity, unidimensionality, the degree of specificity in which a dimension is to be measured, and their amount of variance. Items should be empirically related to one another, which leads to the second step of examining their multivariate relationships. Third, indexes scores are designed, which involves determining their score ranges and weights for the items. Finally, indexes should be validateds, which involves testing whether they can predict indicators related to the measured variable not used in their construction.

The Life of Pablo

The Life of Pablo is the seventh studio album by American recording artist Kanye West. It was released by GOOD Music and Def Jam Recordings on February 14, 2016. The album was initially available exclusively through the streaming service Tidal, following a lengthy series of delays in its recording and finalization. Recording of the album dated back to recording sessions for West's fifth album, My Beautiful Dark Twisted Fantasy (2010), and took place in various locations.

Background

West began working on his seventh solo album in November 2013. The album was originally titled So Help Me God and slated for a 2014 release. This version of the album, which never materialized, included several tracks which were released such as "God Level" (released as part of an Adidas World Cup promo), "Tell Your Friends" (later given to The Weeknd), "3500" (given to Travis Scott), "All Day" and "Only One". In February 2015, the only tracks from this version appearing to make the final cut for The Life of Pablo were "Famous" (formerly titled "Nina Chop") and "Wolves", which West performed on Saturday Night Live's 40th anniversary episode, with American recording artists Sia and Vic Mensa.

Feedback (comics)

Feedback, in comics, may refer to:

See also

Feedback (Jurassic 5 album)

Feedback is the fourth & final studio album from Los Angeles-based hip hop group Jurassic 5, released on July 25, 2006. It is the only album the band released as a quintet, in the wake of Cut Chemist's departure earlier that year.

The first single from the album was "Red Hot", followed by "Canto De Ossanha" and "Work It Out." The album features many tracks which pay homage to their '80s hip hop roots.

All songs on the album, apart from two, contain elements of other songs. The most notable is "Gotta Understand", which contains elements and a sample from "Mr. Welfare Man", performed by Curtis Mayfield. Other examples are "Baby Please", which contains a sample from "Love & Happiness" by Al Green, "Get It Together", which contains elements from "That's The Way Love Is", originally recorded by Marvin Gaye, and Future Sound, which is based on the song "One" by Three Dog Night.

The UK Special Edition version of the album also contains a bonus track: "A Day At The Races - Live at Brixton Academy". Another UK edition contains "What's Golden", also recorded at Brixton Academy.