I am performing similarity check over a column in a table with about 3500 entries. Column is populated with text data from text file. Performing a check results in 3500 * 3500 rows and it takes forever to calculate for my virtual machine. Is there any way to calculate for top-k results, to decrease amount and time needed? What I mean is that, for example when checking two sentences, if first several words does not match, to stop checking that sentences and move on.