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  2. Course Hero - Wikipedia

    en.wikipedia.org/wiki/Course_Hero

    Course Hero was founded by Andrew Grauer at Cornell University in 2006 for college students to share lectures, class notes, exams and assignments. [4] In November 2014, the company raised $15 million in Series A Funding, with investors that included GSV Capital and IDG Capital. Seed investors SV Angel and Maveron also participated. [5]

  3. Perplexity AI - Wikipedia

    en.wikipedia.org/wiki/Perplexity_AI

    Perplexity AI is a conversational search engine that uses large language models (LLMs) to answer queries. Its developer, Perplexity AI, Inc., is based in San Francisco, California. Founded in 2022, Perplexity generates answers using sources from the web and cites links within the text response. [4] Perplexity works on a freemium model; the free ...

  4. Quora - Wikipedia

    en.wikipedia.org/wiki/Quora

    Yes. Launched. June 21, 2010; 14 years ago (2010-06-21) Current status. Active. Written in. Python, C++ [4] Quora is a social question-and-answer website and online knowledge market headquartered in Mountain View, California. It was founded on June 25, 2009, [5] and made available to the public on June 21, 2010. [6]

  5. Comparison of Q&A sites - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_Q&A_sites

    Comparison of Q&A sites. The following is a list of websites that follow a question-and-answer format. The list contains only websites for which an article exists, dedicated either wholly or at least partly to the websites. For the humor "Q&A site" format first popularized by Forum 2000 and The Conversatron, see Q&A comedy website.

  6. OpenCourseWare - Wikipedia

    en.wikipedia.org/wiki/OpenCourseWare

    OpenCourseWare. OpenCourseWare (OCW) are course lessons created at universities and published for free via the Internet. OCW projects first appeared in the late 1990s, and after gaining traction in Europe and then the United States have become a worldwide means of delivering educational content.

  7. Question answering - Wikipedia

    en.wikipedia.org/wiki/Question_answering

    Question answering. Question answering (QA) is a computer science discipline within the fields of information retrieval and natural language processing (NLP) that is concerned with building systems that automatically answer questions that are posed by humans in a natural language. [1]

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