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specify that it is appears in this one document

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Jidong Xiao
2024-03-18 19:24:28 -04:00
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hws/07_search_engine/README.md
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@@ -93,7 +93,7 @@ A search query may contain one keyword or multiple keywords. Given a set of keyw
For each keyword, the keyword's density score is a measure of how the keyword's frequency in a document compares to its occurrence in all documents, and we can use the following formula to calculate the density score of one keyword. (**Note:** here the term "all documents" literally means all documents, not just the documents which contain the query.)
```console
Keyword Density Score = (Number of Times Keyword Appears) / (Total Content Length of this One Document * Keyword Density Across All Documents)
Keyword Density Score = (Number of Times Keyword Appears in this One Document) / (Total Content Length of this One Document * Keyword Density Across All Documents)
```
Here, we consider the content of each document as a string. Also, here "Total Content Length" means the total length of the whole document, not just the length of the <body> section; and the "Number of Times Keyword Appears" means the number of times the keyword appears in the whole document, not just in the <body> section. Similarly, when calculating the "Keyword Density Across All Documents", you should also consider the whole document, not just the <body> section.