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Statistical Analysis and Sparse Estimation Lab (Kei Hirose)
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The lab researches and develops new statistical analysis methods based on mathematical statistics.

AboutAbout the lab
Extracting useful information from data with new statistical methods
The Hirose Lab researches and develops new statistical analysis methods based on mathematical statistics.
It also incorporates ideas from methods used in machine learning.
Analyzing large-scale data such as genetic data requires statistical models with tens of thousands to hundreds of millions of parameters.
The lab is therefore working on new methods of sparse estimation, which extract useful information by estimating most of a large number of parameters as exactly zero.
Key terms
- Sparse estimation
- A method for analyzing high-dimensional data that performs estimation while automatically selecting important variables.
- Factor analysis
- A method for capturing a small number of latent factors behind many observed variables.
NewsLab news
View More ↗ResearchResearch themes
The Hirose Lab researches and develops new statistical analysis methods based on mathematical statistics. Incorporating ideas from methods used in machine learning, it has recently been working on factor analysis, sparse estimation, and applications of data science.
*Illustrative imageTheory and Estimation Methods of Factor Analysis
Factor analysis captures a small number of latent factors behind many observed variables. The lab studies its theory, estimation methods, rotation methods, and interpretability. The method is used in a wide range of fields, including psychology and the social sciences.
*Illustrative imageSparse Estimation for High-Dimensional Data
In the analysis of high-dimensional data, sparse estimation, which performs estimation while automatically selecting important variables, becomes important. The lab studies its theory, computational methods, and applications.
*Illustrative imageStatistical Analysis of Real-World Data
This research applies statistical methods to the analysis of real-world data. The lab conducts statistical data analysis on real data, such as electricity demand forecasting and prediction of material properties.
MembersFaculty
- ProfessorKei Hirose
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Data Analysis ( )” IAEA Imagebank / CC BY 2.0 (cropped)
- Theory and Estimation Methods of Factor Analysis: “Questionnaire-checklist” https://pixabay.com/users/moteoo-466065/ / CC0 (cropped)
- Sparse Estimation for High-Dimensional Data: “Hessian matrix with columns coloured” Gowerrobert / CC BY-SA 3.0 (cropped)
- Statistical Analysis of Real-World Data: “Electricity pylons, sunset 01” Novoklimov / CC BY 4.0 (cropped)
- Related lab (Statistical Analysis and Sparse Estimation Lab): “Factor rotatie” Frederik Beuk / Public domain (cropped)
- Related lab (〈Statistical Science / Small Area Estimation〉): “Colorado census statistical areas 2020” Buaidh / CC0 (cropped)
- Related lab (Statistical Science and Small Area Estimation Lab (Masayo Hirose)): “1922 Index of Great Trigonometrical Survey of India” Survey of India, Government of India / Public domain (cropped)
- Related lab (〈Bayesian Statistics / Uncertainty Quantification〉): “VLT 4LGSF OTA L2 lens measurement on NANOMEFOS (tno kamphues 22)” F. Kamphues/TNO/ESO / CC BY 4.0 (cropped)
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