0
$\begingroup$

I am reading this paper for my master thesis and trying to understand every concept in it. The following sentence confuses me as to what is the exact definition of a dictionary in this concept except for the fact that it holds the atoms as its columns?

Recall we refer to the columns of the matrix $A$ as atoms that are later used as building blocks in the construction of $b$. Such a matrix that holds the atoms as its columnsis referred to as a dictionary[...].

$\endgroup$
  • $\begingroup$ not sure where this use originated but maybe in LSA type apps? take a look at bag of words model $\endgroup$ – vzn Sep 9 '15 at 15:10
1
$\begingroup$

Yes, as it says, a "dictionary" is just the word they're using for a matrix with entries of a particular type that's used for a particular purpose. They're drfining the term "dictionary" in the text you quote.

$\endgroup$
  • $\begingroup$ Thank you for your answer. I saw that definition, just wanted to know if there are any other properties. $\endgroup$ – Gigili Feb 22 '15 at 14:52
  • $\begingroup$ They could also be using "dictionary" as a synonym for "Codebook" $\endgroup$ – Francesco Gramano Feb 23 '15 at 6:16

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.