Mapping question items to skills with non-negative matrix factorization.

Michel C. Desmarais

Published in: SIGKDD Explor. (2011)

Keyphrases

negative matrix factorization
sparse representation
principal component analysis
document clustering
matrix factorization
nonnegative matrix factorization
tensor factorization
spectral clustering
constrained least squares
data sets
pattern recognition
sparsity constraints
information retrieval