Ranking based on keyword usage in websites as well as keywords used when creating a search query.
Patent Name: Document-based synonym generation
Publication Number: US8161041 B1
Assignee: Google Inc
Publication: Apr 2012
Ranking websites solely by matching a singular keyword to a query can be inaccurate as a single keyword not accompanied with a context can mean a lot of different things (eg. apple can mean a fruit or a tech product). This patent describes how Google overcame this by identifying a pair or strings of words often used together in close proximity. By doing this Google can generate long tail keywords and based on that, Google can generate synonyms of those words and use the results to answer queries using keywords not exactly matching but which carry the same meaning as the generated long tail keywords.
What can be done is to use consistent long tail keyword and LSI keywords in order to make it easier for Google to decipher the context of your contents so that they can be used to accurately answer synonymous queries.
Patent Name: Generation of document snippets based on queries and search results
Publication Number: US8145617 B1
Assignee: Google Inc
Publication: Mar 2012
This patent describes how Google generates snippets from a content to best answer the user query. Mainly, Google chooses which part of the content to be used as a snippet based on the parts that include the query keyword, and then score them based on:
A different kind of scoring is used for different type of queries. For example, a query about a conclusion might score a paragraph that is located at the end of the content instead of at the beginning.
What can be done is by using your target keywords properly in the most important part of your content, instead of including them everywhere, to ensure that the snippet generated will be useful to the user.
Patent Name: Document ranking using word relationships
Publication Number: US7996379 B1
Assignee: Google Inc
Publication: Aug 2011
The patent describes how Google determines the relevance of a website to a certain query based on determining the context from the use of other relevant keywords accompanying the main keyword. A website mainly using the keyword “mockingbird”, for example, can be used to answer different queries based on the accompanying keywords – “kill” or “review” might refer to the novel or film “To Kill a Mockingbird” and be used to answer novel or film related queries. Similarly, “eggs” or “feathers” might refer to the actual bird and “lyrics” or “album” can mean the song by Eminem.
In short, properly study and include the right LSI keywords to accompany your main keywords in order to rank in the right queries.
Patent Name: Modifying search result ranking based on implicit user feedback
Publication Number: US 8661029 B1
Assignee: Google LLC
Publication: April 2014
According to the patent, Google is building a “result selection log” where they keep track of the implicit user behavior feedback during a search session where prior actions will have an effect on subsequent search queries.
That includes giving a preference to the pages that are linked in the well-ranked pages from a previous search query in the same session. That means, if you have got a backlink, you’re in for some bonus exposure.
A piece of negative information, whereas a search result is present but not clicked by the user, is observed and can have a negative effect on ranking on subsequent queries in the same search session.
That’s why crafting clear, informative and attractive headlines can be beneficial.
An IR score, an information retrieval score is also mentioned in the patent. An IR score is how prominent a related keyword is shown in a content, that can be the headline, the start of the content the end of the content etc.
Again showing signs that keyword density is still relevant.
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