Exclusive SEO concept. It is used in different information retrieval systems. These include Internet search engines, but also library and text mining systems, for example. The calculation serves as a term weighting factor , that is, to Hong Kong Phone Number List understand the importance of a specific term or phrase for a given document. But, ever since you read the title of this article, you must be wondering: TF- what? So, let's understand what this Hong Kong Phone Number List acronym means.TF-IDF stands for Term Frequency - Inverse Document Frequency.
This expression can be translated into Spanish as "Frequency of the Term - Inverse Frequency of the Hong Kong Phone Number List Documents". It's still not very clear, is it? So, let's go by parts.TF refers to the "term frequency". That part of the calculation answers the question: How often does the term appear in this document? The higher the frequency of the term in the Hong Kong Phone Number List document, the greater its importance .On the other hand, IDF stands for "inverse document frequency". In this part, the tool answers: How often does the term appear in all the documents in the collection?
The higher the frequency in the documents, the lower the Hong Kong Phone Number List importance of the term .The IDF calculation considers which terms are frequently repeated in texts, such as articles and conjunctions (el, la, lo, y, pero, que, etc.), and have no relevance to documents. Thus, in the case of Google, neither for indexing nor for positioning. Therefore, when the Hong Kong Phone Number List IDF factor is incorporated, the calculation decreases the weight of terms that occur very frequently in the document set and increases the weight of terms that appear more rarely. This diagram will help you understand it better.