Publications and Other Works

Peer-reviewed Journals / Conferences

Ebihara, A.F., Miyagawa, T., Sakurai, K., and Imaoka, H.
Learning the Optimal Stopping for Early Classification within Finite Horizons via Sequential Probability Ratio Test [pdf] [Openreview]
International Conference on Learning Representations (ICLR) 2025, Singapore.

Mori, J., Kihara, K., Miyagawa, T., Ebihara, A.F., Teranishi, I, and Kashima, H.
Federated Source-free Domain Adaptation for Classification: Weighted Cluster Aggregation for Unlabaled Data [pdf]
IEEE/CVF Winter Conference on Applications of Computer Vision (WACV) 2025.

Schmehl, M., Caruso, V.C., Chen, Y., Jun, N.Y., Willett, S.M., Mohl, J.T., Ruff, D.A., Cohen, M., Ebihara, A.F., Freiwald, W.A., Tokdar, S., and Groh, J.M.
Multiple objects evoke fluctuating responses in several regions of the visual pathway [pdf]
eLife 2024.

Schmehl, M., Caruso, V.C., Willett, S.M., Chen, Y., Jun, N.Y., Mohl, J.T., Ruff, D.A., Cohen, M., Ebihara, A.F., Freiwald, W.A., Tokdar, S., and Groh, J.M.
Fluctuating responses evoked by multiple objects: a general feature of visual representations
Conference on Cognitive Computational Neuroscience (CCN) 2023, Oxford, UK.
*Oral presentation (top 4.5%)

Ebihara, A.F., Miyagawa, T., Sakurai, K., and Imaoka, H.
Toward Asymptotic Optimality: Sequential Unsupervised Regression of Density Ratio for Early Classification [pdf]
IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP) 2023, Rhodes Island, Greece.

Sawada, A., Miyagawa, T., Ebihara, A.F., Yachida, S., and Hosoi, T.
Convolutional Neural Networks for Time-dependent Classification of Variable-length Time Series [pdf]
IEEE World Congress on Computational Intelligence (WCCI) 2022, IJCNN track, Padua, Italy.
*Oral presentation.

Miyamoto, T., Hashimoto, H., Hayasaka, A., Ebihara, A.F., and Imaoka, H.
Joint Feature Distribution Alignment Learning for NIR-VIS and VIS-VIS Face Recognition [pdf]
International Joint Conference on Biometrics (IJCB) 2021, Virtual conference.

Miyagawa, T., and Ebihara, A.F.
The Power of Log-Sum-Exp: Sequential Density Ratio Matrix Estimation for Speed-Accuracy Optimization [pdf]
International Conference on Machine Learning (ICML) 2021, Virtual conference.

Ebihara, A.F., Sakurai, K., and Imaoka, H.
Efficient Face Spoofing Detection with Flash [pdf]
IEEE Transactions on Biometrics, Behavior, and Identity Science (T-BIOM), vol. 3, no. 4, pp. 535-549, Oct. 2021, doi: 10.1109/TBIOM.2021.3076816.

Imaoka, H., Hashimoto, H., Takahashi, K., Ebihara, A.F., Liu, J., Hayasaka, A., Morishita, Y., and Sakurai, K.
The Future of Biometrics Technology: from Face Recognition to Related Applications [pdf]
APSIPA Transactions on Signal and Information Processing, 2021, 10, E9. doi:10.1017/ATSIP.2021.8.

Ebihara, A.F., Miyagawa, T., Sakurai, K., and Imaoka, H.
Sequential Density Ratio Estimation for Simultaneous Optimization of Speed and Accuracy [pdf]
International Conference on Learning Representations (ICLR) 2021, Virtual conference.
*Spotlight presentation (top 5.5%).

Ebihara, A.F., Sakurai, K., and Imaoka, H.
Specular- and Diffuse-reflection-based Face Spoofing Detection for Mobile Devices [pdf]
International Joint Conference on Biometrics (IJCB) 2020, Virtual conference.
*IJCB 2020 Best Paper

Caruso, V.C., Mohl, J.T., Glynn, C., Jee, J., Willets, S.M., Azman, A., Ebihara, A.F., Estrada, R., Freiwald, W.A., Tokdar, S.T., and Groh, J.M.
Single Neurons May Encode Simultaneous Stimuli by Switching Between Activity Patterns [pdf]
Nature Communications 9, 2715 (2018).

Ebihara, A.F., Hocevar, A., Magnasco M.O., and Freiwald, W.A.
Multi-object Scene Encoding in Face-selective Cortex
Manuscript in preparation.

Leibo, J.Z., Anselmi, F., Mutch J., Ebihara, A.F., Freiwald, W.A., and Poggio, T.
View-invariance and Mirror-symmetric Tuning in a Model of the Macaque Face-processing System
Cosyne 2013, Salt Lake City, UT, USA.

Ebihara, A.F. and Freiwald, W.A.
Representation of Multiple Stimuli in the Macaque Middle Face Patch
Cosyne 2012, Salt Lake City, UT, USA.

Non-peer-reviewed Works

Schmehl, M., Caruso, V.C., Willett, S.M., Chen, Y., Jun, N.Y., Mohl, J.T., Ruff, D.A., Cohen, M., Ebihara, A.F., Freiwald, W.A., Tokdar, S., and Groh, J.M.
Fluctuating responses evoked by multiple objects: a general phenomenon
Simian Collective 2023, Chicago.

Miyamoto, T., Hashimoto, H., Hayasaka, A., Ebihara, A.F., and Imaoka, H.
Joint Feature Distribution Alignment Learning for NIR-VIS and VIS-VIS Face Recognition
The 11th Symposium on Biometrics, Recognition and Authentication (IEICE SBRA2021), Virtual Conference.

Kawai, H., Watanabe, D., Ito, K., Aoki, T., Ebihara, A.F., Sakurai, K., and Imaoka, H.
Spoofing Detection for the Face Authentication Using Deep Learning
2019 Symposium on Cryptography and Information Security. (IEICE SCIS) Otsu city, Shiga, Japan.

Ebihara, A.F., Sakurai, K., and Imaoka, H.
Flash Reflection-based Face Liveness Detection for Mobile Devices
The 8th Symposium on Biometrics, Recognition and Authentication (IEICE SBRA2018), Iidabashi, Tokyo, Japan.
*Bio-X incentive award

Ebihara, A.F., Sakurai, K., and Imaoka, H.
Spoofing Detection with a Monocular Camera using Flash Reflection
IEICE Bio-X Study Group 2018. Kanazawa city, Ishikawa, Japan.

Caruso, V.C., Ebihara, A.F., Tokdar, S., Freiwald, W.A., and Groh, J.M.
Multiplexing in Face Selective Cortex: Evidence of Flexible Trial-by-Trial and Sub-Trial Representations of Multiple Stimuli
Conference on Cognitive Computational Neuroscience (CCN) 2017. Columbia University, NY.

Caruso, V.C., Ebihara, A.F., Milewski A., Tokdar, S., Freiwald W.A., and Groh J.M.
Is Multiplexing a General Strategy for Encoding Multiple Items in the Brain? Evidence From a Visual Cortical Face Area and a Subcortical Auditory Area
Society for Neuroscience annual meeting 2015, Poster session on Oscillations and synchrony: Unit studies. Chicago, IL.

Ebihara, A.F.
A Circuit Mechanism for Explicit Multi-stimulus Coding
JMSA New York Life Science Forum 2015, New York, NY.

Ebihara, A.F., Hocevar, A., Magnasco M.O., and Freiwald, W.A.
Representation of Multiple Stimuli by Face Selective Neurons in the Macaque Temporal Lobe
JMSA New York Life Science Forum 2015, New York, NY.

Ebihara, A.F., Hocevar, A., Magnasco M.O., and Freiwald, W.A.
Representations of Multiple Stimuli by Face-selective Neurons in the Macaque Temporal Lobe
Society for Neuroscience annual meeting 2014, Poster session on Neural Processing of Faces and Bodies, Washington, DC.

Ebihara, A.F., Hocevar, A., Magnasco M.O., and Freiwald, W.A.
Representations of Multiple Stimuli in the Macaque Temporal Lobe
Cold Spring Harbor Symposium on Quantitative Biology 2014: Cognition, Cold Spring Harbor, NY.

Ebihara, A.F., Leibo, J.Z., Poggio, T., and Freiwald, W.A.
Max-pooling and Clutter Tolerance in the Macaque Face Processing System
NSF-STC site visit at McGovern Institute for Brain Research (MIT), 2012, Cambridge, MA.

Ebihara, A.F. and Freiwald, W.A.
Representations of Multiple Stimuli in the Macaque Face Patches
Society for Neuroscience annual meeting 2012, Poster session on Neural Processing of Faces and Bodies, Session 263.10/Y19, New Orleans, LA.

Ebihara, A.F., Tsao, D.Y., and Freiwald, W.A.
Representation of Multiple Stimuli by Face-selective Neurons in the Macaque Temporal Lobe
Society for Neuroscience annual meeting 2011, Poster session on Face Processing in Extrastriate Cortex,Session 487.06/OO36, Washington, DC.

Ebihara, A.F., Tsao, D.Y., and Freiwald, W.A.
Representations of Multiple Objects in the Macaque Face Processing System
Society for Neuroscience annual meeting 2010, Nanosymposium on Encoding of Visually Presented Faces II, Session 834.4, San Diego, CA.

Nishizumi, H., Nakayama, H, Ebihara, A.F., and Sakano, H.
Odorant Receptor Gene Choice in the Mouse Olfactory System
The 31st Annual Meeting of the Japan Neuroscience Society, 2008, Oral session O1-H04, Tokyo, Japan.

Ph.D. Thesis

Ebihara, A.F.
Normalization Among Heterogeneous Population Confers Stimulus Discriminability on the Macaque Face Patch Neurons.
2015 Student Theses and Dissertations. 278. [pdf]

Ph.D. advisor: Dr. Winrich A. Freiwald
Ph.D. co-advisor: Dr. Marcelo Magnasco
Faculty advisory committee: Dr. Cornelia I. Bargmann and Dr. Charles D. Gilbert

Invited talks

Ebihara, A.F.

SPRT-TANDEM: Sequential Density Ratio Estimation for Early Classification.

Symposium on Biometrics, Recognition and Authentication (SBRA) 2023, Seikei University, Tokyo, Japan.

Patents

Watanabe, K., Ebihara, A., and Miyagawa, T.
Information processing device, information processing method, medical image identification device, and non-transitory computer-readable medium in which program is stored.
WO2022259429A1

Watanabe, K., Saiko, M., Ebihara, A., and Miyagawa, T.
Image processing device, image processing method, and storage medium.
WO2022224446A1

Miyagawa, T., and Ebihara, A.
Information processing system, information processing method, and computer program.
WO2022157973A1
*Covers the idea of the Log-Sum Exponential Loss (LSEL, ICML2021)

Ebihara, A., and Miyagawa, T.
Information processing device, information processing method, and computer program.
WO2022144992A1

Ebihara, A., and Miyagawa, T.
Information processing system, information processing method, and computer program.
WO2022144991A1

Ebihara, A., and Miyagawa, T.
Information processing system, information processing method, and computer program.
WO2022137439A1

Ebihara, A., and Miyagawa, T.
Information processing device, information processing method, and computer program.
WO2022113163A1

Ebihara, A., and Miyagawa, T.
Information processing device, information processing method, and computer program.
WO2022054246A1, US20220269909A1

Miyagawa, T., and Ebihara, A.
Information processing system, information processing method, and computer program.
WO2022049704A1
*Covers the idea of the SPRT-TANDEM with Oblivion (ICML2021)

Ebihara, A., and Miyagawa, T.
Learning device, learning method, and recording medium.
WO2021229663A1
*Covers the idea of the Loss for Log-Likelihood Ratio estimation (LLLR, ICLR2021)

Lee, K.P., and Ebihara, A.
Determination device, determination method, and recording medium.
WO2021229659A1

Ebihara, A.
Determination device, determination method, and recording medium.
WO2021229662A1, US20220245916A1

Ebihara, A.
Determination device, determination method, and recording medium.
WO2021229661A1, US20220245934A1
*Covers the idea of a user-interface of the SPRT-TANDEM.

Ebihara, A.
Determination device, learning method, and recording medium.
WO2021229660A1, US20220245473A1

Ebihara, A.
Determination device, determination method, and recording medium.
WO2021229654A1, US20220254153A1

Miyagawa, T., and Ebihara, A.
Identification device, identification method, and recording medium.
WO2021220450A1, US20220245519A1

Ebihara, A.
Weight estimation device, weight estimation method, and weight estimation program.
JP2021021973A

Ebihara, A.
Spoofing detection apparatus, spoofing detection method, and computer-readable recording medium.
JP6984724B2, JP2022028850A, US11222221B2, US20220092323A1, WO2019163066A1
*Covers the idea of the diffusion refrection descriptor (IJCB2020)

Ebihara, A.
Spoofing detector, spoofing detection method, and computer-readable recording medium.
JP7004059B2, JP2022031456A, EP3757936A4, US11200436B2, US20220237951A1, WO2019163065A1
*Covers the idea of the specular refrection descriptor (IJCB2020)

Ebihara, A.
Information processing device, personal identification device, information processing method, and storage medium.
WO2020194497A1, CN113646758A, EP3951620A4, JPWO2020194497A1, US20220147778A1
*Covers the idea of the SPRT-TANDEM (ICLR2021).

Ebihara, A.
Face three-dimensional shape estimation device, face three-dimensional shape estimation method, and face three-dimensional shape estimation program.
WO2019078310A1, JP7047848B2, EP3699865A4, US20200257888A1