How Latent Semantic Indexing Help Boost SEO Ranking?

Aug 5, 2019 | 0 comments

Huntsville web design SEO

High website ranking results in free organic traffic. You won’t have to spend thousands on online advertising when your website ranks high for relevant keywords. One little-known technique that can prove invaluable in boosting online ranking is latent semantic indexing.

Here you will know what exactly is latent semantic indexing and why the technique is recommended by Huntsville SEO experts for improved search engine ranking.

What is Latent Semantic Indexing (LSI)?

Latent semantic indexing (LSI) is a technique used by Google and other search engines to find out relevant websites for online users. Search engines use this technique to analyze sentences people enter in the search engine. They use the technique to determine relevant content that should be presented in the search screen.

The term LSI may be new to SEO, but it has been around since the late 1980s. In 1988, a group of researchers had patented a technique for retrieving linguistic information. The same technique is used by search engines to help them rank pages in the search results.

LSI keywords are contextually relevant and thematically linked to the main keywords.

Suppose that you offer online services for tourists in New York. You can choose keywords that are thermally related but are not synonyms such as ‘Empire State Building’, ‘New York hotels’, ‘New York restaurants’, and others.

By using LSI keywords, you will be able to craft content that flows naturally in a more conversational manner.

Your online audience will be able to search for topics with relevant keywords easily and quickly. This, in turn, will help generate more online traffic for your website.

Google searches


Finding LSI keywords through the search engine is a highly effective way to discover relevant LSI keywords. The reason is that you will find out words that Google links with specific keywords. You will increase the chances of boosting the search engine ranking when you incorporate these words into your web copy.

Google Keyword Planner

Google Keywords Planner is a free tool that you can use to search for relevant keywords. After you sign in to your Google Ads account, you should click on the tools icon on the upper right corner, and under the Planning sub-menu, select Keyword Planner.

Google keyword planner

You should next select Discover New Keywords, enter the main keyword, and then select Get Results. Google will display a list of keywords that are semantically related to your website.

How to Generate LSI Keywords for SEO?

Websites with content that incorporates LSI keywords have a better chance in ranking high in search engine. You should sprinkle relevant LSI keywords in the content to improve the search engine ranking of the web pages.

You can search for LSI keywords in three different ways.

LSI Keyword Generator

LSi keywords

One technique is to use an LSI keyword generator such as LSI Graph. The online tool lets you generate a list of LSI keywords that you can add to your website content. This tool lists a large number of related terms that are semantically linked to the main keyword. You can add these keywords to your website content to improve the chances of your website ranking high in the search results page.

Google Search

Another technique to generate LSI keywords is to look for related terms in Google search. When you enter a keyword in the search box, the search engine displays a list of related words.

For instance, when you enter the keyword ‘tourism New York’ in the Google search box, you will be presented with different related searches that include New York state, New York maps, New York city tourism statistics, New York hotels, and New York attractions.

The results can be ranked accounting to relevance, average monthly searches, and level of competition. You should ideally target low or medium competition keywords with 10 to 100 average monthly searches.

How to Select the Best LSI Keywords for Search Engine Ranking?

You now know about LSI keywords and also techniques to search-relevant keywords. The next important question is how you should select the best keywords.

You should not target all the LSI keywords in your web copy. Targeting every related keyword won’t result in the best results. To determine which keywords you should select to optimize the web pages, you need to find out the search intent.

Search intent or keyword intent is the main goal of entering a specific keyword in the search engine. The term refers to finding out the reason online uses enter specific search query.

Google algorithm determines search intent to display relevant pages. The intent of online users can be grouped into the following four categories:

  • Informational — Gain information about a product or service online
  • Investigative — Search for the best product or service sold online
  • Transactional   — Buy a product or service sold online
  • Navigational — Find a specific website

The words used in the search query will give you an idea of the search intent. For instance, words like ‘buy online’ show transactional intent. On the other hand words like ‘best deals’ or ‘cheap products’ displays investigative search intent.

Keywords such as ‘what is’ or ‘how to’ shows informational search content, while keywords that include the name of the company such as Oreo biscuit or Bata shoes represent navigational search intent.

You should customize the web page or blog based on the search intent of the users. The web copy should be optimized for LSI keywords with transactional search intent. On the other hand, the blogs should focus on using related keywords with informational and investigative search intent.

Summing It All Up

Latent Semantic Indexing (LSI) is a highly relevant SEO technique for ranking high in the search engine. The term refers to keywords that are relevant to the search intent.

You should perform latent semantic analysis to find out highly relevant and related keywords using tools such as Google search, Google Keyword Planner, and LSI keyword generator tools.

The LSI keywords should be used tactically based on the search intent. The web pages need to be optimized based on the search intent of the user. Using this technique will help improve the search engine ranking and attract highly relevant online traffic to your website.

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