no code implementations • 20 Sep 2023 • Kei Nakagawa, Masaya Abe, Seiichi Kuroki
However, the instability associated with the input parameter changes and estimation errors can deteriorate portfolio performance.
no code implementations • 15 Feb 2021 • Junpei Komiyama, Masaya Abe, Kei Nakagawa, Kenichiro McAlinn
We achieve superior statistical power to existing methods and prove that the false discovery rate is controlled.
no code implementations • 28 Apr 2020 • Kei Nakagawa, Shuhei Noma, Masaya Abe
In order to improve this problem, we propose RM-CVaR: Regularized Multiple $\beta$-CVaR Portfolio.
no code implementations • 17 Feb 2020 • Masaya Abe, Kei Nakagawa
We perform empirical analysis in the Japanese stock market and confirm the profitability of our framework.
no code implementations • 2 Oct 2019 • Kei Nakagawa, Masaya Abe, Junpei Komiyama
Stock return predictability is an important research theme as it reflects our economic and social organization, and significant efforts are made to explain the dynamism therein.
no code implementations • 20 Jan 2019 • Kei Nakagawa, Tomoki Ito, Masaya Abe, Kiyoshi Izumi
Specifically, we extend the linear multi-factor model to be non-linear and time-varying with LSTM.
no code implementations • 3 Jan 2018 • Masaya Abe, Hideki Nakayama
Many studies have been undertaken by using machine learning techniques, including neural networks, to predict stock returns.