Do you think that Google uses TFIDF as a ranking signal? Rest assured it does not. TFIDF would be referred to in several Google Patents for using stop word removal by a search engine. It would help you get rid of all kinds of function words within a search query and in the page content.
However, the use of the TFIDF mechanism for comparing and analyzing relevancy has been highly unlikely. You would wonder whether analyzing TFIDF for ranking on Google is important for you. It would be pertinent to mention here that TFIDF has been unable to look beyond keywords. The model comprises keywords as a string of characters. It may not be able to identify semantic relations between them opposite to semantic search models used by Google. It would not be wrong to suggest that TFIDF is not a ranking signal determining the position of your page.
You may not have an expected TFIDF value required for matching every keyword in your content. Rest assured to avoid if anyone is looking forward to convincing you of it.
How could TFIDF assist your SEO?
TFIDF has been known for finding co-occurring terms. Therefore, you would not have access to every webpage as Google. The question to ponder upon would be the need for accessing every webpage. It would be imperative for gaining a complete list of co-occurrence ideas. Therefore, it would be in your best interest to look at a bunch of pages. Contrary to popular belief, TFIDF is not difficult to understand. You would be required to consider following the three simple steps.
Step 1: writing content
You would not be required to make TFIDF the purpose of your piece of content. Unnatural writing would not covert, despite the page ranks higher and getting you the targeted traffic. Therefore, it would be in your best interest to sit down and write down whatever content you have planned.
Step 2: Plug in the TFIDF tool
A majority of tools would work relatively similar to the TFIDF tool. You would be required to enter a URL along with the keywords you wish to optimize. The tool would check the pages ranking on Google for that keyword, determines the content, calculates the TFIDF for all available terms it comes across, and compares your content statistics to your counterparts. With the basic tools such as SEObility, you would get a single-keyword list.
Step 3: Content Enrichment with TFIDF Co-Occurrence recommendations
Most phrases would be similar to what you already have in your content. If appropriate, you should look forward to using them along the way. Most of the phrases would point out the latest topics that have not crossed your mind yet. You would be required to go through the ideas and think about the different ways of using them in your content.
It would be in your best interest to choose the most common terms from the content of your counterpart to bring in new ideas into your specific keyword research and content planning needs. It would help you think out of the box for more inspiration.