2 citations · 3 across the 3 of their papers we have counts for
3 papers
cs.LG2016★ 2 cited
Word2Vec is a special case of Kernel Correspondence Analysis and Kernels for Natural Language Processing
Hirotaka Niitsuma, Minho Lee
We show that correspondence analysis (CA) is equivalent to defining a Gini index with appropriately scaled one-hot encoding. Using this relation, we introduce a nonlinear kernel ex…
cs.CV2014
Image processing using miniKanren
Hirotaka Niitsuma
An integral image is one of the most efficient optimization technique for image processing. However an integral image is only a special case of delayed stream or memoization. This…
cs.LG2007★ 1 cited
Covariance and PCA for Categorical Variables
Hirotaka Niitsuma, Takashi Okada
Covariances from categorical variables are defined using a regular simplex expression for categories. The method follows the variance definition by Gini, and it gives the covarianc…