All Questions
5 questions
1vote
3answers
187views
Architecture/algorithm for unusual recommendation system
There are thousands (or tens of thousands) of possible movie titles. New user enters my website and selects hundreds of titles that he likes. The only single goal of my website is to output the list ...
- 121
1vote
0answers
107views
high-dimensional index structures
I'm looking for information on searching (filtering) high-dimensional data. I'm not interested in nearest-neighbour search or clustering, but rather filtering/sorting by subset of dimensions - like in ...
- 161
5votes
2answers
2kviews
Why Do B+ Trees Have a Minimum Occupancy of 50%?
As far as I can tell, the basic operations (add, delete, search) on a B+ Tree would function the same if minimum occupancy was 1, or 1/3, or any other function on node size. All the sources available ...
11votes
4answers
7kviews
What are the differences between algorithms using data structures and algorithms using databases?
The General Question What are the differences between algorithms using data structures and algorithms using databases? Some Context This is a question that has been bugging me for some time, and I ...
36votes
7answers
137kviews
How to quickly search through a very large list of strings / records on a database
I have the following problem: I have a database containing more than 2 million records. Each record has a string field X and I want to display a list of records for which field X contains a certain ...
- 19.8k
