## Research Publication

Refereed Paper | Refereed Proceedings | Proceedings | Books

### Refereed Paper

#### 2014

- S. Ohtani, S. Wing, V. G. Merkin, T. Higuchi, Solar cycle dependence of nightside field-aligned currents: Effects of dayside ionospheric conductivity on the solar wind-magnetosphere-ionosphere coupling,
*J. Geophys. Res. Space Physics*, Vol.**119**, Issue 1, 322-334, doi:10.1002/2013JA019410, 2014. - S. Wing, J. Jay, S. Ohtani, W. Gordon, T. Higuchi, Field-aligned currents during the extreme solar minimum between the solar cycles 23 and 24,
*J. Geophys. Res. Space Physics*, Vol.**119**, Issue 4, 2466-2475,, 2014. - H. Yamashita, T. Higuchi, R. Yoshida, Atom Environment Kernels on Molecules,
*J. Chem. Inf. Model*, Vol.**54**, No. 5, 1289-1300, 2014. - S. Nakano, M.-C. Fok, P. C. Brandt, and T. Higuchi, Estimation of temporal evolution of the helium plasmasphere based on a sequence of IMAGE/EUV images,
*J. Geophys. Res.*, Vol.**119**, Issue 5, 3708-3723, DOI: 10.1002/2013JA019734, 2014. - S. Nakano, M.-C. Fok, P. C. Brandt, and T. Higuchi, Estimation of the helium ion density distribution in the plasmasphere based on a single IMAGE/EUV image,
*J. Geophys. Res.*, Vol.**119**, Issue 5, 3724-3740, DOI: 10.1002/2013JA019733, 2014.

#### 2013

- H. Nagao, T. Higuchi, S. Miura, D. Inazu, Time-Series Modeling of Tide Gauge Records for Monitoring of the Crustal Activities Related to Oceanic Trench Earthquakes around Japan,
*The Computer Journal*, Vol. 55, No. 10, doi:10.1093/comjnl/bxs139, 2013. - M. Saito, S. Imoto, R. Yamaguchi,M. Tsubokura, M. Kami, H.Nakada, H. Sato, S, Miyano, T. Higuchi, Enhancement of collective immunity in Tokyo metropolitan area by selective vaccination against an emerging influenza pandemic,
*PLoS ONE*, Vol.**7**, Issue 9, e43923, 2013.

#### 2012

- S. Nakano and T. Higuchi, Non-storm irregular variation of the Dst index,
*Annales Geophysicae*, Vol.**30**, 153-162, 2012. - H. Koyama, T. Umeda, K. Nakamura, T. Higuchi and A. Kimura, A high-resolution shape fitting and simulation demonstrated equatorial cell surface softening during cytokinesis and its promotive role in cytokinesis,
*PLoS ONE*, Vol.**7**, Issue 2, e31607, 2012. - M. Yamauchi, R. Yamaguchi, A. Nakata, T. Kohno, M. Nagasaki, T. Shimamura, S. Imoto, K. Ogami, A. Saito, K. Ueno, Y. Hatanaka, R. Yoshida, T. Higuchi, M. Nomura, D. G. Beer, J. Yokota, S. Miyano, N. Gotoh,Epidermal growth factor receptor tyrosine kinase defines critical prognostic genes of stage I lung adenocarcinoma ,
*PLoS ONE*, Vol. 7, Issue 9, e43923, 2012. - K. Hirose and T. Higuchi, Creating facial animation of characters via MoCap data,
*Journal of Applied Statistics*, Vol. 39, Issue 12, 2583-2597, 2012.

#### 2011

- S. Saita, A. Kadokura, N. Sato, S. Fujita, T. Tanaka, Y. Ebihara, S. Ohtani, G. Ueno, K. Murata, D. Matsuoka, A. Kitamoto, and T. Higuchi, Displacement of conjugate points during a substorm in a global magnetohydrodynamic simulation,
*Journal of Geophysical Research*, Vol.**116**, A06213, doi:10.1029/2010JA016155, 2011. - S. Wing, S. Ohtani, J. R. Johnson, M. Echim, P. T. Newell, T. Higuchi, G. Ueno, and G. R. Wilson, Solar wind driving of dayside field‐aligned currents,
*Journal of Geophysical Research*, VOl.**116**, A08208, doi:10.1029/2011JA016579, 2011.

#### 2010

- D. Inazu, T. Higuchi, K. Nakamura, Optimization of boundary condition and physical parameter in an ocean tide model using an evolutionary algorithm,
*Theoretical and Applied Mechanics Japan*, Vol.**58**, 101-112, 2010. - K. Watanabe, T. Ishigaki, and T. Higuchi, A multivariable detection device based on a capacitive microphone and its application to security,
*IEEE Transactions on Instrumentation and Measurement*, Vol.**59**, No.7, 1955-1963, 2010. - G. Ueno, T. Higuchi, T. Kagimoto, N. Hirose, Maximum likelihood estimation of error covariances in ensemble-based filters and its application to a coupled atmosphere-ocean model,
*Quarterly Journal of the Royal Meteorological Society*, Vol.**136**, 1316-1343, DOI:10.1002/qj.654, 2010. - Ohtani, S., S. Wing, P.T. Newell, and T. Higuchi, Locations of night-side precipitation boundaries relative to R2 and R1 currents,
*J. Geophys. Res*.,**115**, A10233, doi:10.1029/2010JA015444, 2010. - R. Yoshida, M.M. Saito, H. Nagao, and T. Higuchi, Bayesian experts in exploring reaction kinetics of transcription circuits,
*Bioinformatics*, Vol.**26**, i589-i595, 2010. - V. P. Nguyen, T. Washio and T. Higuchi, A new particle filter for high dimensional state space models based on intensive and extensive proposal distribution,
*International Journal of Knowledge Engineering and Soft Data Paradigms*, Vol.**2**, No. 4, 284-311, doi:10.1504/IJKESDP.2010.037492, 2010. - T. Ishigaki, T. Higuchi, and K. Watanabe, Fault detection of a vibration mechanism by spectrum classification with a divergence-based kernel,
*IET Signal Processing*, Vol.**4**, Iss. 5, 518-529, doi:10.1049/iet-spr.2008.0195, 2010.

#### 2009

- T. Ishigaki, and T. Higuchi, Dynamic spectrum classification by Kernel classifiers with divergence-based Kernels and its applications to acoustic signals,
*International Journal of Knowledge Engineering and Soft Data Paradigms*, Vol.**1**, No.2, 173-192, 2009. - K. Nakamura, N. Hirose, B.H. Choi and T. Higuchi, Particle filtering in data assimilation and its application to boundary condition of tsunami simulation model,
*Data Assimilation for Atmospheric, Oceanic and Hydrologic Applications*, pp.353-366, S.K. Park and L. Xu (ed.), Springer, 2009. - D. Inazu, T. Sato, S. Miura, Y. Ohta, K. Nakamura, H, Fujimoto, C. F. Larsen, and T. Higuchi, Accurate ocean tide modeling in southeast Alaska and large tidal dissipation around Glacier Bay,
*Journal of Oceanography*, Vol.**65**, No. 3, 335-347, 2009. - S.Nakano, G. Ueno, S. Ohtani, and T. Higuchi, Impact of the solar wind dynamic pressure on the Region 2 field-aligned currents,
*Journal of Geophysical Research*, Vol.**114**, A02221, doi:10.1029/2008JA013674, 2009. [PDF583KB] - S. Nakano and T. Higuchi, Estimation of a long-term variation of a magnetic- storm index using the merging particle filter, Special Section: Large Scale Algorithms for Learning and Optimization,
*IEICE TRANSACTIONS on Information and Systems*, Vol.**E92-D**, No.7, 1382-1387, 2009.

#### 2008

- J. Fukuda, S. Miyazaki, T. Higuchi, and T. Kato, Geodetic inversion for space-time distribution of fault slip with time-varying smoothing regularization,
*Geophysical Journal Internationa*l, Vol.**173**, Issue 1, 25-48, 2008.[PDF1191KB] - O. Hirose, R. Yoshida, S. Imoto, R. Yamaguchi, T. Higuchi, D. S. Charnock-Jones, C. Print, and S. Miyano, Statistical inference of transcriptional module-based gene networks from time course gene expression profiles by using state space models,
*Bioinformatics*, Vol.**24**, No.7, 932-942, doi:10.1093/bioinformatics/btm639, 2008. [PDF1076KB] - S. Nakano, G. Ueno, Y. Ebihara, M.-C. Fok, S. Ohtani, P.C. Brandt, D.G. Mitchell, K. Keika, and T. Higuchi, A method for estimating the ring current structure and the electric potential distribution using ENA data assimilation,
*Journal of Geophysical Research*, Vol.**113**, A05208, doi:10.1029/2006JA011853, 2008. - R. Yoshida, M. Nagasaki, R. Yamaguchi, S. Imoto, S. Miyano, and T. Higuchi, Bayesian learning of biological pathways on genomic data assimilation,
*Bioinformatics*Vol.**24**, No.22, 2592-2601, 2008.

#### 2007

- R. Yamaguchi, R. Yoshida, S. Imoto, T. Higuchi, and S. Miyano, Finding module-based gene networks with state-space models - Mining high-dimensional and short time-course gene expression data,
*IEEE Signal Processing Magazine, Special Issue on Signal Processing Methods in Genomics and Proteomics*, vol.**24**, no.1, 37-46, 2007.[PDF(1,664KB)] - T. Ishigaki, T. Higuchi, K. Watanabe, An Information Fusion Based Multi-objective Security System with a Multiple-input/single-output Sensor,
*IEEE Sensors Journal*Vol.**7**, No.5, 734-742, 2007 - M. Ozima, F.A.Podosek, T.Higuchi, Q-Z.Yin, A. Yamada, On the mean oxygen isotope composition of the Solar System,
*ICARUS*,**186**(2), 562-570, 2007. - G. Ueno, T. Higuchi, T. Kagimoto, N. Hirose, Application of the ensemble Kalman filter and smoother to a coupled atmosphere-ocean model,
*Scientific Online Letters on the Atmosphere*Vol.**3**, 5-8, 2007.[PDF(864KB)] - G. Ueno, T. Higuchi, S. Ohtani and P. T. Newell, Particle precipitation characteristics in the dayside four-sheet field-aligned current structure, Journal of Geophysical Research, (accepted), 2007.
- S. Nakano, G. Ueno, and T. Higuchi, Merging particle filter for sequential data assimilation,
*Nonlinear Processes in Geophysics*, Vol.**14**, 395-408, 2007.[PDF674KB]

#### 2006

- S.Imoto, T.Higuchi, T.Goto, and S.Miyano, Error tolerant model for incorporating biological knowledge with expression data in estimating gene networks Statistical Methodology,
*Statistical Methodology*,**3**, 1-16, 2006.[PDF(1,911K)] - M. Kamiyama, and T. Higuchi, Adjustment of Sampling Locations in Rail-Geometry Datasets:Using Dynamic Programming and Non-linear Filtering,
*Systems and Computers in Japan*, Vol.**37**, No.1, 61-70, 2006.[PDF(923KB)] - R. Yamaguchi and T. Higuchi, State-space Approach with the Maximum Likelihood Principle to Identify the System-Generating Time Course Gene Expression Date of Yeast,
*International Journal of Data Mining and Bioinformatics*, December issue, Vol.**1**, No.1, 77 - 87, 2006.[PDF(442KB)] - R. Yoshida, T. Higuchi, S. Imoto and S. Miyano, ArrayCluster: An Analytic Tool for Clustering, Data Visualization, Module Finder on Gene Expression Profiles,
*Bioinformatics*,**22**, 1538 - 1539, 2006.

#### 2005

- S. Ohtani, G. Ueno, T. Higuchi, H. Kawano, Annual and Semiannual Variations of the Location and Intensity of Large-Scale Field-Aligned Currents,
*Journal of Geophysical Research*,**110**, A01216, #DOI 10.1029/2005.JA010634, 2005.[PDF(996K)]

- S. Ohtani, G. Ueno, T. Higuchi, Comparision of large-scale field-aligned currents under sunlit and dark ionospheric conditions,
*Journal of Geophysical Research*,**110**, A09230, #DOI 10.1029/2005JA011057, 2005.[PDF(835K)]

#### 2004

- M. Kamiyama, and T. Higuchi, Adjustment of Non-Uniform Sampling Locations in Spatial Datasets with Dynamic Programming and Non-Linear Filtering,
*IEEE Signal Processing Magazine, Special Issue on Signal Processing for Mining Information*, Vol.21, 3, 47-56, 2004.[PDF(1016K)] - S.Imoto, T.Higuchi, T.Goto, K.Tashiro, S.Kuhara, and S.Miyano, Combining microarrays and biological knowledge for estimating gene networks via Bayesian networks,
*Journal of Bioinformatics and Computational Biology*, Vol.2, No.1, 77-98, #DOI:10.1142/S021972000400048X, 2004. - T.Sato, T.Higuchi, and G.Kitagawa, Statistical Inference using Stochastic Swiching Models for the Discrimination of Unobserved Display Promotion from POS Data,
*Marketing Letters*, Vol.**15**No1,37-60, 2004.[PDF(341K)] - K. Haraguchi, H. Kawano, K. Yumoto, S. Ohtani, T. Higuchi, and G. Ueno, Ionospheric conductivity dependence of dayside region-0, 1, and 2 field-aligned current systems: Statistical study with DMSP-F7,
*Annales Geophysicae*, 22, 2775-2783, 2004.[PDF(543K)] - J. Fukuda, T. Higuchi, S. Miyazaki, T. Kato, A new approach to time-dependent inversion of geodetic data using Monte Carlo mixture Kalman filter,
*Geophysical Journal International*,**159**, 17-39,

#DOI 10.1111/j.1365-246X.2004.02383.x, 2004.[PDF(365K)]

#### 2003

- G. Kitagawa, T. Higuchi, and F. N. Kondo, Smoothness Prior Approach to Exolore Mean Structure in Large-scale Time Series,
*Theoretical Computer Science***292**, No.2, 431-446, 2003.

[ps(1,784K)] [PDF(367K)]

(original:G. Kitagawa, T. Higuchi, and F. N. Kondo, Smoothness Prior Approach to Explore the Mean Structure in Large Time Series Data,*The proceedings of The Second International Conference on Discovery Science*, Springer-Verlag Lecture Notes in Artificial Intelligence Series, 230-241, 1999) - H. Nagao, T. Iyemori, T. Higuchi, and T. Araki, Lower Mantle Conductivity Anomalies Estimated from Geomagnetic Jerks,
*Journal of Geophysical Research-Solid Earth*,**108**, No.B5, #DOI 10.1029/2002 JB001786, 2003.

#### 2002

- H. Nagao, T. Iyemori, T. Higuchi, S. Nagano, and T. Araki, Local Time Features of Geomagnetic Jerks,
*Earth Planets and Space*,**54**, 119-131, 2002. - Ueno, G., N. Nakamura, T. Higuchi, T. Tuschiya, S. Machida, and T. Araki, Application of multivariate Maxwellian mixture model to plasma velocity distribution,
*Progresses in Discovery Sience*, Lecture Notes in Computer Science,**2281**, 372―383, Springer-Verlag, 2002.

[ps(1,353K)] [PDF(209K)] - Nagao, H., T. Higuchi, T. Iyemori, and T. Araki, Automatic detection of geomagnetic jerks by applying a statistical time series model to geomagnetic monthly means,
*Progresses in Discovery Science*, Lecture Notes in Computer Science,**2281**, 360―371, Springer-Verlag, 2002.

[ps(677K)] [PDF(429K)] - T. Higuchi, S.-I. Ohtani, T. Uozumi, and K. Yumoto, Pi2 onset time determination with information criterion,
*Journal of Geophysical Research*,**107**, No.A7, #DOI 10.1029/2001JA003505, 2002.[PDF(836K)]

#### 2001

- G. Ueno, N. Nakamura, T. Higuchi, T. Tsuchiya, S. Machida, T. Araki, Y. Saito, and T. Mukai, Application of multivariate Maxwellian mixture model to plasma velocity distribution function,
*Journal of Geophysical Research*,**106**, A11, 25655-25672, 2001.

#### 2000

- T. Higuchi, G. Kitagawa, Knowledge Discovery and Self-Organizing State Space Model,
*IEICE Transactions on Information and Systems*,**E83-D**, No.1, 36-43, 2000.

[ps(227K)] [PDF(185K)] - T. Higuchi, and S. Ohtani, Automatic Identification of a Large-scale Field-aligend Current Structures and its Application to Night-Side Current Systems, AGU Geophysical Monograph Series
**118**,*Magnetospheric Current Systems*edited by S. Ohtani, R. Fujii, M. Hesse, and R.L. Lysak, 389-394, 2000.[PDF(448K)] - S. Ohtani, T. Higuchi, T. Sotirelis, and P.T.Newell, Disappearance of Large-scale Field-aligned Current Systems: Implication to the Solar Wind-Magnetosphere Coupling, AGU Geophysical Monograph Series
**118**,*Magnetospheric Current Systems*edited by S. Ohtani, R. Fujii, M. Hesse, and R.L. Lysak, 253-259, 2000.[PDF(538K)] - T. Higuchi, and S. Ohtani, Automatic Identification of a Large-scale Field-aligend Current Structures,
*Journal of Geophysical Research*,**105**, A11, 25305-25315, 2000.[PDF(928K)] - S. Ohtani, and T. Higuchi, Four-Sheet Structures of Dayside Field-Aligned Cuurents: Statistical Study,
*Journal of Geophysical Research*,**105**, A11, 25317-25324, 2000.[PDF(642K)]

#### 1999

- H. Kawano, S. M. Petrinec, C.T. Russell, and T. Higuchi, Magnetopause shape determinations from measured position and estimated flaring angle,
*Journal of Geophysical Research*, Vol.104, No.A1, 247, 1999.[PDF(1,139K)] - T. Higuchi, Applications of Quasi-Periodic Oscillation Models to Seasonal Small Count Time Series,
*Computational Statistics and Data Analysis*,**30**, 281-301, 1999.[PDF(1,033K)] - G. Kitagawa and T. Higuchi, Automatic Transaction of Signal via Statistical Modeling,
*New Generation Computing*,Vol.18,17-28,1999.

[ps(829K)] [PDF(350K)]

(original:G. Kitagawa and T. Higuchi, Automatic Transaction of Signal via Statistical Modeling,*The proceedings of The First International Conference on Discovery Science*, Springer-Verlag Lecture Notes in Artificial Intelligence Series, 375-386, 1998) - T. Higuchi, Automatic Identification of the Large Scale Field Aligned Current Systems as an Example of Knowledge Discovery from the Large Database(in Japanese with English Abstract),
*The Proceedings of the Insitute of Statistical Mathematics*, Vol. 47, No.2, 291-306, 1999.

#### 1998

- Ohtani, S., K. Takahashi, T. Higuchi, A.T.Y. Lui, H.E. Spence, and J.F. Fennell, AMPTE/CCE--SCATHA simultaneous observations of substorm--associated magnetic fluctuations,
*Journal of Geophysical Research*,**103**, No. A3, 4671-4682, 1998.[PDF(1,067K)]

#### 1997

- Higuchi, T., Monte Carlo filter using the Genetic algorithm operators,
*Journal of Statistical Computation and Simulation*,**59**, No. 1, 1-23, 1997.[PDF(985K)] - Higuchi, T. A seasonal adjustment designed to deal with the time series observed in the natural phenomena (in Japanese with English Abstract),
*Proceedings of the Institute of Statistical Mathematics*, Vol. 45, No. 2, 319-328, 1997.

#### 1996

- Kawano, H., and T. Higuchi, A generalization of the minimum variance method,
*Annals of Geophysicae*,**14**, 1019-1024, 1996.[PDF(450K)] - Higuchi, T., Genetic Algorithm and Monte Carlo Filter (in Japanese with English Abstract),
*Proceedings of the Institute of Statistical Mathematics*, Vol. 44, No. 1, 19-30, 1996.

#### 1995

- Kawano. H., and T. Higuchi, The Bootstrap Method in Space Physics: Error Estimation for the Minimum Variance Analysis,
*Geophysical Research Letter*,**22**, No. 3, 307-310, 1995.[PDF(351K)] - Higuchi, T., G. Igarashi, Y. Tohjima and H. Wakita, Time series analysis of groundwater radon using stochastic differential equations,
*Journal of Physics of the Earth*,**43**, No. 2, 117-130, 1995.[PDF(795K)] - Ohtani, S., T. Higuchi, A.T.Y. Lui, and K. Takahashi, Magnetic fluctuations associated with tail current disruption: Fractal analysis,
*Journal of Geophysical Research*,**100**, 19135-19145, 1995.[PDF(952K)]

#### 1994

- Higuchi, T., G. K. Crawford, R. J. Strangeway, and C. T. Russell, Separation of spin synchronized signals,
*Annals of the Institute of Statistical Mathematics*,**46**, No.3, 405--428, 1994.

#### 1993

- Higuchi, T., A method to separate the Spin Synchronized Signals Using a Bayesian Approach (in Japanese with English Abstract),
*Proceedings of the Institute of Statistical Mathematics*, Vol. 41, No. 2, pp 115-130, 1993.[PDF(846K)]

#### 1991

- Higuchi, T., Frequency domain characteristics of linear operator to decompose a time series into the multi--components,
*Annals of the Institute of Statistical Mathematics*,**43**, No. 3, 469--492, 1991. - Higuchi, T., Method to subtract an effect of the geocorona EUV radiation from the low energy particle (LEP) data by the Akebono (EXOS--D) satellite,
*Journal of Geomagnetism and Geoelectricity*,**43**, 957--978, 1991.[PDF(1,282K)]

#### 1990

- Higuchi, T., Relationship between the fractal dimension and the power law index for a time series: a numerical investigation,
*Physica D*,**46**, 254--264, 1990.[PDF(636K)] - Higuchi, T., An interpretation of Auto-regression (AR) Model by using a Linear Algebra (in Japanese with English Abstract),
*Proceedings of the Institute of Statistical Mathematics*, Vol. 38, No. 1, pp 31-45, 1990.

#### 1989

- Kita, K., T. Higuchi, and T. Ogawa, Baysian statistical inference of airglow profiles from rocket observational data: comparison with conventinal methods,
*Planetary Space Science*,**37**, No. 11, 1327--1331, 1989.[PDF(380K)] - Higuchi, T., Fractal Analysis of Time Series (in Japanese with English Abstract),
*Proceedings of the Institute of Statistical Mathematics*, Vol. 37, No. 2, 209-233, 1989.

#### 1988

- Higuchi, T., Approach to an irregular time series on the basis of the fractal theory,
*Physica D*,**31**, 277--283, 1988.[PDF(410K)] - Higuchi, T., K. Kita, and T. Ogawa, Bayesian statistical inference to remove periodic noises in the optical observation aboard a spacecraft,
*Applied Optics*,**27**, No. 21, 4514--4519, 1988.[PDF(343K)] - Higuchi, T., and S. Kokubun, Waveform and polarization of compressional Pc 5 waves at geosynchronous orbit,
*Journal of Geophysical Research*,**93**, No. A12, 14433--14443, 1988. - Higuchi, T., Quantitative analysis in turbulent fluctuations in the magnetosheath, Doctor thesis of University of Tokyo, 1988.

#### 1986

- Higuchi, T., S. Kokubun, and S. Ohtani, Harmonic structure of compressional Pc 5 pulsations at synchronous orbit,
*Geophysical Research Letter*,**13**, No. 11, 1101--1104, 1986. - Oguti, T., K. Hayashi, T. Yamamoto, J. Ishida, T. Higuchi, and N. Nishitani, Abcence of hydromagnetic waves in the magnetosperic equatorial region conjugate with pulsating auroras,
*Journal of Geophysical Research*,**91**, No. A12, 13711--13715, 1986.

### Refereed Proceedings

- H. Nagao and T. Higuchi, Data assimilation system for seismoacoustic waves,
*Proceedings of 16th International Conference on Information Fusion*, 2013. - M. M. Satio, S. Imoto, R. Yamaguchi, S. Miyano, T. Higuchi, Estimation of abrupt changes in sentinel observation data of influenza epidemics in Japan,
*Proceedings of 16th International Conference on Information Fusion*, 2013. - M. Saito, S. Imoto, R. Yamaguchi, H. Sato, H. Sakada, M. Kami, S, Miyano, T. Higuchi, Parallel agent-based simulator for Influenza pandemic,
*Advanced Agent Technology, Lecture Notes in in Computer Science, Springer,*Vol.**7068**, 361-370, 2012*.* - T. Imoto, S. Nakano, T. Higuchi, Modeling human behavior selection under environmental subsidy policy by multi-agent simulation,
*Advanced Agent Technology, Lecture Notes in in Computer Science, Springer,*Vol.**7068**, 350-358, 2012*.* - K. Hirose and T. Higuchi, Generating artistic character facial animation based on motion capture data,
*Proceedings of International Workshop on Advanced Image Technology*, 240-245, 2012. - M. Saito, S. Imoto, R. Yamaguchi, S. Miyano, T. Higuchi, Identifiability of local transmissibility parameters in agent-based pandemic simulation,
*Proceedings of 15th International Conference on Information Fusion*, 2012. - H. Nagao and T. Higuchi, Data assimilation of the earth's atmospheric and ionospheric oscillations excited by large earthquakes,
*Proceedings of 15th International Conference on Information Fusion*, 2012. - S. Nakano and T. Higuchi, Weight adjustment of the particle filter on distributed computing systems,
*Proceedings of 15th International Conference on Information Fusion*, 2012. - T. Higuchi, Embedding reality in a numerical simulation with data assimilation,
*Proceedings of 14th International Conference Fusion*, 2011. - H. Nagao, N. Kobayashi, S. Nakano and T. Higuchi, Fault parameter estimation with data assimilation on infrasound variations due to big earthquakes,
*Proceedings of 14th International Conference Fusion*, 2011. - M. Saito, S. Imoto, R. Yamaguchi, S. Miyano and T. Higuchi, Estimation of macroscopic parameter in agent-based pandemic simulation,
*Proceedings of 14th International Conference Fusion*, 2011. - S. Nakano, and T. Higuchi, A dynamic grouping strategy for implementation of theparticle filter on a massively parallel computer,
*Proceedings of 13th International Conference Fusion*, 2010. - H. Nagao, and T. Higuchi, Web application for time-series analysis based on particle filter available on cloud computing system,
*Proceedings of 13th International Conference Fusion*, 2010. - K. Hayashi, M.M. Saito, R. Yoshida, T. Higuchi, Implementation of Sequential Importance Sampling in GPGPU,
*Proceedings of 13th International Conference Fusion*, 2010. - K. Nakamura, R. Yoshida, M. Nagasaki, S. Miyano, and T. Higuchi, Parameter Estimation of In Silico Biological Pathways with Particle Filtering Towards a Petascale Computing,
*The Proceedings of 14th Pacific Symposium on Biocomputing*, 227-238, 2009. - T. Ishigaki, and T. Higuchi, Dynamic Spectrum Classification by Divergence-Based Kernel Machines and Its Application to the Detection of Worn-out banknotes,
*The Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing (IEEE ICASSP 2008)*, 1873-1876, 2008. - T. Ishigaki, and T. Higuchi, Parameter identification of a pressure regulator with a nonlinear structure using a particle filter based on the nonlinear state space model,
*The Proceedings of 11th International Conference of Fusion*, 886-891, 2008. - R. Yamaguchi, S. Imoto, M. Yamauchi, M. Nagasaki, R. Yoshida, T. Shimamura, Y. Hatanaka, K. Ueno, T. Higuchi, N. Gotoh, S. Miyano, Predicting differences in gene regulatory systems by state space models,
*Genome Informatics*, 21:101-113, 2008. - O.Hirose, R.Yoshida, R.Yamaguchi, S.Imoto, T.Higuchi, S.Miyano, Analyzing time course gene expression data with biological and technical replicates to estimate gene networks by state space models,
*Proc. 2nd Asia International Conference on Modelling & Simulation*, 940-946, 2008(AMS2008: Refereed conference) - O.Hirose, R.Yoshida, R.Yamaguchi, S.Imoto, T.Higuchi, S.Miyano, Clustering with time course gene expression profiles and the mixture of state space models,
*Genome Informatics*, 18, 258-266, 2007. - M. Nagasaki, R. Yamaguchi, R. Yoshida, S. Imoto, A. Doi, Y. Tamada, H. Matsuno, S. Miyano, T. Higuchi, Genomic Data Assimilation for Estimating Hybrid Functional Petri Net from Time-course Gene Expression Data,
*Proceedings of The Sixth International Workshop on Bioinformatics and Systems Biology (IBSB2006)*, (accept), 2006 - T. Ishigaki, T. Higuchi, K. Watanabe, Spectrum classification for early fault diagnosis of LP gas pressure regulator based on Kullback-Leibler Kernel,
*Proceedings of the 2006 IEEE Signal Processing Society Workshop(MLSP2006)*, 453-458, 2006.[PDF(725K)] - G. Ueno, T. Higuchi, T. Kagimoto, N. Hirose, Application of the Ensemble Kalman Filter to Atmosphere-Ocean Coupled Model,
*Proceedings of Nonlinear Statistical Signal Processing Workshop 2006*, 2006.[PDF(90K)] - G. Ueno, T. Higuchi, T. Kagimoto, N. Hirose, Prediction of ocean state by data assimilation with the ensemble Kalman filter,
*Proceedings of Joint 3rd International Conference on Soft Computing and Intelligent Systems and 7th International Symposium on advanced Intelligent Systems(SCIS & ISIS 2006)*, 1884-1889, 2006. - K. Nakamura, T. Higuchi, N. Hirose, Application of particle filter to identification of tsunami simulation model, Proceedings of
*Proceedings of Joint 3rd International Conference on Soft Computing and Intelligent Systems and 7th International Symposium on advanced Intelligent Systems(SCIS & ISIS 2006)*, 1890-1895, 2006. - S. Tasaki, M. Nagaski, M. Oyama, H. Hata, K. Ueno, R. Yoshida, T. Higuchi, S. Sugano, S. Miyano, Modeling and Estimation of Dynamic EGFR Pathway by Data Assimilation Approach Using Time Series Proteomic Data,

*Proceedings of Genome Informatics 2006*,*Genome Informatics*,**17**(2), 226-238, 2006 - S. Yamashita, T. Higuchi, Estimating gene networks with cDNA microarray Data Using State-space models,
*Proceedings of 2005 International Workshop on Data Mining and Bioinformatics*,*Lecture Notes in Computer Science, Springer*,**3482**, 381-388, 2005. - R. Yoshida, S. Imoto, T. Higuchi , A Penalized Likelihood Estimation on Transcriptional Module-based Clusterintg,
*Proceedings of 2005 International Workshop on Data Mining and Bioinformatics*,*Lecture Notes in Computer Science, Springer,***3482**, 389-401, 2005.[PDF(412K)] - R. Yoshida, S. Imoto, T. Higuchi, Estimating Time-Dependent Gene Networks from Time Series Microarray Data by Dynamic Linear Models with Markov Switching ,
*Proceeedings of Computational Systems Bioinformatics Conference(CSB2005)*, 289-298, 2005.[PDF(1551K)] - S. Imoto, T. Higuchi, S. Kim, E. Jeong, S. Miyano, Residual Bootstrapping and Median Filtering for Robust Estimation of Gene Networks from Microarray Data,
*Proceedings of Computational Methods in Systems Biology '04*, LNBI,**3082**, 149-160, 2004.[PDF(291K)] - R. Yoshida, T. Higuchi, S. Imoto, A Mixed Factors Model for Dimension Reduction and Extraction of a Group Structure in Gene Expression Data,
*Proceedings of 2004 IEEE Computational Systems Bioinformatics Conference*, 161-172, 2004.[PDF(498K)]

- T. Higuchi，and J. Fukuda, Monte Carlo Mixture Kalman filter and its application to GPS data analysis for spase-time inversion,
*13th IFAC Symposium on System Identification*, 1299-1304, 2003.[PDF(101K)]

- S. Imoto, T. Higuchi, T. Goto, K. Tashiro, S. Kuhara, S. Miyano, Combining Microarrays and Biological Knowledge for Estimating Gene Networks via Bayesian Networks,
*Proceedings of 2003**IEEE Computer Society Bioinformatics Conference*, 104-113, 2003.[PDF(201K)] - M. Kamiyama, T. Higuchi, Non-linear filtering approach to an adjustment of non-uniform sampling locations in spatial datasets,
*Proceedings of 2003 IEEE Workshop on Statistical Signal Processing*, 181-184, 2003.[PDF(449K)] - T. Higuchi, Data assimilation with Monte Carlo mixture Kalman filter toward space weather forecasting,
*Proceedings of International Symposium on Information Science and Electrical Engineering 2003*, 122-125, 2003.[PDF(111K)] - K. Haraguchi, H. Kawano, K. Yumoto, S. Ohtani, T. Higuchi, Characteristics of Field-Aligned Currents observed by the DMSP satellite,
*Proceedings of International Symposium on Information Science and Electrical Engineering 2003*, 358-360, 2003. - K. Fukuyama, T. Higuchi, T. Uozumi, H. Kawano, K. Yumoto, Determination of onset times of Pi2 magnetic pulsations,
*Proceedings of International Symposium on Information Science and Electrical Engineering 2003*, 522-525, 2003. - G. Kitagawa, T. Higuchi, and S. Sato, Computational methods for time series analysis,
*Proceedings of Computational Statitstics 2002, W. Hardle and B. Ronz eds.*, 1-10, 2002. - N. Ikoma, T. Higuchi, and H. Maeda, Maneuvering target tracking by using particle filter method with model switching structure,
*Proceedings of Computational Statitstics 2002, W. Hardle and B. Ronz eds.*, 35-40, 2002. - T.Ikoma, N.Ichimura, T Higuchi, and H.Maeda, Particle Filter Based Method for Maneuvering Target Tracking ,
*IEEE International Workshop on Intelligent Signal Processing*, 3-8, 2001.

[ps(258K)] [PDF(203K)] - Genta Ueno, Nagamoto Nakamura, and Tomoyuki Higuchi, Separation of Photoelectrons via Multivariate Maxwellian Mixture Model,
*The proceedings of The Forth International Conference on Discovery Science*,*Lecture Notes in Artificial Intelligence*,**2226**, 470-475, 2001.

[ps(335K)] [PDF(80K)] - T. Higuchi, and S. Ohtani, Automatic Identification of Large-Scale Field-Aligned Current Structures: Statistical Approach,
*The proceedings of World Automation Congress 2000***(WAC 2000)**, 2000.

[PDF (206K)] - T. Higuchi, Decomposition of Small Count Time Series into Multi-Factor Components by Sequential Monte Carlo Method,
*The Proceedings of Workshop on Information-Based Induction Sciences 2000***(IBIS2000)**, 307-312, 2000.

[PDF (215K)] - G. Ueno, N. Nakamura, T. Higuchi, T. Tsuchiya, S. Machida, and T. Araki, Application of Multivariate Maxwellian Mixture Model to Plasma Velocity Distribution Function,
*The proceedings of The Third International Conference on Discovery Science*,*Lecture Notes in Artificial Intelligence*,**1967**, 197-211, 2000. - Tomoyuki Higuchi, Automatic and Accurate Determination of the Onset Time of the Quasi-periodic Oscillation,
*The proceedings of The Third International Conference on Discovery Science*,*Lecture Notes in Artificial Intelligence*,**1967**, 242-246, 2000.

[ps(216K)] [PDF(129K)] - G. Kitagawa, T. Higuchi, and F. N. Kondo, Smoothness Prior Approach to Explore the Mean Structure in Large Time Series Data,
*The proceedings of The Second International Conference on Discovery Science*, Springer-Verlag Lecture Notes in Artificial Intelligence Series, 230-241, 1999. - Genta Ueno, Shinobu Machida, Nagatomo Nakamura, Tomoyuki Higuchi, and Tohru Araki, Detection of the Structure of Particle Velocity Distribution by Finite Mixture Distribution Model,
*The proceedings of The Second International Conference on Discovery Science*, Springer-Verlag Lecture Notes in Artificial Intelligence Series, 366-368, 1999. - G. Kitagawa and T. Higuchi, Automatic Transaction of Signal via Statistical Modeling,
*The proceedings of The First International Conference on Discovery Science*, Springer-Verlag Lecture Notes in Artificial Intelligence Series, 375-386, 1998. - Higuchi, T., Separation of spin synchronized signals using a Bayesian approach,
*Proceeding of "The Frontiers of statistical modeling: An informational approach"*, (eds. H. Bozdogan), Kluwer Academic Publishers, 193--215, 1994.

### Proceedings

- Norikazu Ikoma , Noyuki Ichimura , Tomoyuki Higuchi, and Hiroshi Maeda ManeuveringTarget Tracking by Using Particle Filter,
*Joint 9th IFSA World Congress and 20th NAFIPS International Conference of NAFIPS***(IFSA-NAFIPS2001)**, 2001.

[ps(227K)] [PDF(173K)] - Tomoyuki Higuchi, Evolutionary Time Series Model with Parallel Computing
*The Third JAPAN-US Joint Seminar on Statistical Time Series Analysis*,2001.

[PDF(367K)] - T. Higuchi, Analysis of small count time series with time varying frequency component,
*The proceedings of the ISM International Symposium on Frontiers of Time Series Modeling*(edited G. Kitagawa and T. Higuchi), pp. 12-23, 2000. - Ohtani, S--I., T. Higuchi, A. T. Y. Lui, and K. Takahashi, A fractal analysis of magnetic signatures associated with tail current disruption,
*The proceedings of the Second International Conference on Substorms*, pp 223-227, edited by J. R. Kan, J. D. Craven, and S.-I. Akasofu, Geophiscs Institute, University of Alaska, Fairbanks, 1994. - Higuchi, T., S. Kokubun, and C. T. Russell, Quantitative investigation of turbulent fluctuations in the magnetosheath,
*Proceedings of Conference on Plasma Waves and Instabilities in Magnetospheric and at Comets*, 120--123, 1987.

### Books

- Higuchi, T., Self-organizing Time Series Model, in
*Sequential Monte Carlo Methods in Practice*(eds. A. Doucet, J.F.G, de Freitas, and N.J.Gordon), pp.429-444, Springer-Verlag New York, 2001.

[ps(258K)] [PDF(203K)] - Higuchi, T., Processing of Time Series Data Obtained by Satellites,
*The Practice of Time Series Analysis*(eds. H. Akaike and G. Kitagawa), pp 313-326, Springer-Verlag New York, 1999.[PDF(934K)]