This is just a thinly veiled advertisement for Algorithmia. Which granted, does look like an interesting product. However, as a side effect the "Math" in this "

This is just a thinly veiled advertisement for Algorithmia. Which granted, does look like an interesting product. However, as a side effect the "Math" in this "Book" is very light and all the code examples are just API calls to Algorithmia. I think both the terms "book" and "understand" are used very loosely here. Understand the concept enough to use, maybe. I guess my bar for understanding is higher. I don't mean to be harsh, just I prefer the title to tell it like it really is. After all, "5 algorithms web developers can use today on Algorithmia" might still get up-voted. Also, as a side note, the "PageRank" algorithm is slightly misleading as it has nothing to do with Google PageRank which some web developers might be lead to believe based on the name.