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what is LSI ??

This is a discussion on what is LSI ?? within the Blogging forums, part of the Internet Marketing category; LSI stands for Latent Semantic Index in which the content of the webpage are crawled by search engine and the ...

  1. #21
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    Default Re: what is LSI ??

    LSI stands for Latent Semantic Index in which the content of the webpage are crawled by search engine and the most common words and phrases are collated and identified as the keyword of the page.

  2. #22
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    Default Re: what is LSI ??

    Quote Originally Posted by Tryfa Fashion View Post
    Hi guys,
    What is mean by LSI.
    Hello

    Latent Semantic Indexing (LSI) is a mathematical method used to determine the relationship between terms and concepts in content. The contents of a webpage are crawled by a search engine and the most common words and phrases are collated and identified as the keywords for the page.

  3. #23
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    Default Re: what is LSI ??

    If you need to create a technical understanding of LSI you’ll 1st need to find out 2 topics (one straightforward, one a bit a lot of advanced) that it’s engineered on:

    Term Frequency - Inverse Document Frequency vectors (tf-idf)

    The Stanford IP course features a nice introduction to the current topic, you'll watch the lectures on-line here (Watch lectures 19–1 to 19–7). tf-idf is pretty straight-forward, you'll even be ready to decide it up simply from the wikipeda page.

    Dimensionality Reduction with Principal element Analysis (PCA)

    This topic was coated well within the Machine Learning course on Coursera, you'll conjointly notice the lecture on YouTube here.

    Latent linguistics categorization

    Once you’ve learned those 2 ideas (or if you’re already accustomed to them!) then I’ve written a web log post here that describes LSI along side some example Python code. in brief — LSI simply takes the tf-idf vectors (which square measure generally terribly long, like 10,000 features) and applies spatial property reduction (down to perhaps a hundred - three hundred features). Not solely square measure the ensuing vectors smaller however the ensuing options square measure way more informative! you'll see this incontestable within the Python example code, wherever applying LSI will increase the classification accuracy over plain tf-idf.

  4. #24
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    Default Re: what is LSI ??

    Latent semantic indexing (LSI) is a concept used by search engines to discover how a term and content work together to mean the same thing.

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