- Bootstrapping
This is the history of bootstrapping or booting which began in the 1880s as a leather strap and evolved into a group of metaphors that share a common meaning, a self-sustaining process that proceeds without external help.
traps for leather boots
Tall
boot s may have a tab, loop or handle at the top known as a bootstrap, allowing one to use fingers or a tool to provide better leverage in pulling the boots on. The saying "to pull yourself up by your bootstraps" [ [http://listserv.linguistlist.org/cgi-bin/wa?A2=ind0508b&L=ads-l&P=14972 Bootstrap citations from 1800s] ] was already in use during the 1800s as an example of an impossible task. Bootstrap as a metaphor, meaning to better oneself by one's own unaided efforts, was in use in 1922. ["Ulysses" cited in the Oxford English Dictionary] This metaphor spawned additional metaphors for a series of self-sustaining processes that proceed without external help. [ [http://www.phrases.org.uk/meanings/290800.html Phrase Finder] ]Meanings
Computing
The computer term bootstrap began as a 1950s metaphor derived from using a strap to pull on leather boots without outside help. In computers, pressing a bootstrap button caused a hardwired program to read a bootstrap program from an input unit and then execute the bootstrap program which became a self-sustaining process that proceeded without external help. As a computing term, bootstrap has been used since at least 1958 [cite book |title=Oxford English Dictionary |publisher=
Oxford University ] .The bootstrap concept was used in the
IBM 701 computer (1952-1956) which had a "load button" which initiated reading of the first 36-bit word from a punched card in a card reader, or from a magnetic tape unit, or drum unit (predecessor of the harddisk drive). The left 18-bit half-word was then executed as an instruction which read additional words into memory. ["From Gutenberg to the Internet", Jeremy M. Norman, 2005, page 436, ISBN 0-930405-87-0]* See
Bootstrapping (compilers) , writing a compiler for a computer language using the computer language itself to code the compiler.
* SeeBootstrapping (computing) , a summary of the process of a simple computer system activating a more complicated computer systemBusiness and finance
Bootstrapping in business is to start a business without external help/capital.
* SeeStartup company , a startup company can grow by reinvesting profits in its own growth, if its bootstrapping costs are low and return on investment is high.
* SeeBootstrapping (finance) , the method to create the spot rate curve.
* SeeOperation Bootstrap ("Operación Manos a la Obra"), ambitious projects which industrialized Puerto Rico in the mid-20th century.Biology
Richard Dawkins in his book "River Out of Eden" [Richard Dawkins, "River Out of Eden", pages 23-25, 1995 (paper) ISBN 0-465-06990-8] used the computer bootstrapping concept to explain how biological cells differentiate: "Different cells receive different combinations of chemicals, which switch on different combinations of genes, and some genes work to switch other genes on or off. And so the bootstrapping continues, until we have the full repertoire of different kinds of cells."Law
In law, bootstrapping is a rule preventing hearsay in conspiracy cases.
Linguistics
In linguistics, bootstrapping is a theory of language acquisition.
tatistics
In statistics, bootstrapping is a resampling technique used to obtain estimates of summary statistics.
Machine learning
In machine learning, bootstrapping is a technique used to iteratively improve a classifier performance.
Physics
In physics, bootstrapping is using very general consistency criteria to determine the form of a quantum theory from some assumptions on the spectrum of particles
Electronics
In electronics, bootstrapping is a form of positive feedback in analog circuit design.
Personal name
Bootstrap Bill Turner is a character from "Pirates Of The Carribbean ".cience fiction
The term bootstrap was used in
Robert A. Heinlein 's 1941 short story "By His Bootstraps " about recursive time travel.ee also
Conceptual metaphor References
External links
* [http://www.allensboots.com/site/page/pg6068-pn_Boot_Glossary_2.html Pull straps for boots]
* [http://dictionary.reference.com/browse/bootstrap Dictionary.com entries for Bootstrap]
* [http://www.thefreedictionary.com/bootstrap Freedictionary.com entries for Bootstrap]
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