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At the end of the Overview, I added the phrase "due to the question being included". Because that is the reason as to why the results, when using a natural-language search engine, would be more relevant than the results from a keyword search engine. However it still requires a citation. |
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*[[SHRDLU]], a natural-language interface that manipulates blocks in a virtual "blocks world"
*''Lunar'', a natural-language interface to a database containing chemical analyses of Apollo-11 moon rocks by [http://parsecraft.com/ William A. Woods].
*''Chat-80'' transformed English questions into [[Prolog]] expressions, which were evaluated against the Prolog database. The code of Chat-80 was circulated widely, and formed the basis of several other experimental Nl interfaces. An online demo is available on the LPA website.<ref>{{cite web|url=http://www.lpa.co.uk/pws_dem5.htm|title=Chat-80 demo|
*[[ELIZA]], written at MIT by Joseph Weizenbaum between 1964 and 1966, mimicked a psychotherapist and was operated by processing users' responses to scripts. Using almost no information about human thought or emotion, the DOCTOR script sometimes provided a startlingly human-like interaction. An online demo is available on the LPA website.<ref>{{cite web|url=http://www.lpa.co.uk/pws_dem4.htm|title=ELIZA demo|
* ''Janus'' is also one of the few systems to support temporal questions.
* ''Intellect'' from [[Trinzic]] (formed by the merger of AICorp and Aion).
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===Wolfram Alpha===
{{main|Wolfram Alpha}}
Wolfram Alpha is an online service that answers factual queries directly by computing the answer from structured data, rather than providing a list of documents or web pages that might contain the answer as a [[search engine]] would.<ref>{{cite news |url=https://www.theguardian.com/technology/2009/mar/09/search-engine-google |title=British search engine 'could rival Google' |last=Johnson |first=Bobbie |date=2009-03-09 |work=[[The Guardian]] |
===Siri===
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Siri is an [[intelligent personal assistant]] application integrated with operating system [[iOS]]. The application uses [[natural language processing]] to answer questions and make recommendations.
Siri's marketing claims include that it adapts to a user's individual preferences over time and personalizes results, and performs tasks such as making dinner reservations while trying to catch a cab.<ref>{{cite web|url=https://www.apple.com/iphone/features/siri.html|title=iOS - Siri|website=Apple|
===Others===
* [[Ask.com]] – The original idea behind Ask Jeeves (Ask.com) was traditional keyword searching with an ability to get answers to questions posed in everyday, natural language. The current Ask.com still supports this, with added support for math, dictionary, and conversion questions.
* [[Braina]]<ref>{{cite web|url=http://www.brainasoft.com/braina/|title=Braina - Artificial Intelligence Software for Windows|website=www.brainasoft.com|
[[File:GNOME Do Classic.png|thumb|Screenshot of GNOME DO classic interface.]]
* [[GNOME Do]] – Allows for quick finding miscellaneous artifacts of GNOME environment (applications, Evolution and Pidgin contacts, Firefox bookmarks, Rhythmbox artists and albums, and so on) and execute the basic actions on them (launch, open, email, chat, play, etc.).<ref>Ubuntu 10.04 Add/Remove Applications description for GNOME Do</ref>
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* [[Lexxe]] – Lexxe was an Internet search engine that used natural-language processing for queries (semantic search). Searches could be made with keywords, phrases, and questions, such as "How old is Wikipedia?" Lexxe closed its search engine services in 2015.
* [[Pikimal]] – Pikimal used natural-language tied to user preference to make search recommendations by template. Pikimal closed in 2015.
* [[Powerset (company)|Powerset]] – On May 11, 2008, the company unveiled a tool for searching a fixed subset of [[Wikipedia]] using conversational phrases rather than keywords.<ref>{{cite news |url=http://bits.blogs.nytimes.com/2008/05/12/powerset-debuts-with-search-of-wikipedia/ |title=Powerset Debuts With Search of Wikipedia |work=The New York Times |first=Miguel |last=Helft |date=May 12, 2008}}</ref> On July 1, 2008, it was purchased by [[Microsoft]].<ref>{{cite web |url=http://www.powerset.com/blog/articles/2008/07/01/microsoft-to-acquire-powerset |
* [[Q-go]] – The Q-go technology provides relevant answers to users in response to queries on a company’s internet website or corporate intranet, formulated in natural sentences or keyword input alike. Q-go was acquired by [[RightNow Technologies]] in 2011.
* [[Yebol]] – Yebol is a vertical "decision" search engine that had developed a knowledge-based, semantic search platform. Yebol's artificial intelligence human intelligence-infused algorithms automatically cluster and categorize search results, web sites, pages and content that it presents in a visually indexed format that is more aligned with initial human intent. Yebol uses association, ranking and clustering algorithms to analyze related keywords or web pages. Yebol integrates natural-language processing, metasynthetic-engineered open complex systems, and machine algorithms with human knowledge for each query to establish a web directory that actually 'learns', using correlation, clustering and classification algorithms to automatically generate the knowledge query, which is retained and regenerated forward.<ref>Humphries, Matthew. [http://www.geek.com/articles/news/yebolcom-steps-into-the-search-market-20090731/ "Yebol.com steps into the search market"] ''Geek.com''. 31 July 2009.</ref>
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