1.
Yamada M, Sugiyama M. Direct Density-Ratio Estimation with Dimensionality Reduction via Hetero-Distributional Subspace Analysis. AAAI [Internet]. 2011 Aug. 4 [cited 2026 May 7];25(1):549-54. Available from: https://ojs.aaai.org/index.php/AAAI/article/view/7905