Yutaro YAMAGUCHI
(Last Update: January 17, 2023)
Associate Professor
Department of Information and Physical Sciences,
Graduate School of Information Science and Technology,
Osaka University
Information Science and Technology Building C, Room C506,
15 Yamadaoka, Suita, Osaka 5650871, Japan
Email: yutaro.yamaguchi [at] ist.osakau.ac.jp
(old: ymgc [at] kurims.kyotou.ac.jp, yutaro_yamaguchi [at] mist.i.utokyo.ac.jp, yutaro_yamaguchi [at] ist.osakau.ac.jp, yutaro_yamaguchi [at] inf.kyushuu.ac.jp)
>> Japanese Version
C.V.
Education
Mar. 2008: Graduation from Tennoji High School attached to Osaka Kyoiku University, Japan.
Mar. 2011: Withdrawal from Undergraduate School of Informatics and Mathematical Science,
Faculty of Engineering, Kyoto University, Japan. (Due to proceeding to master's course.)
Mar. 2013: Master of Science from Department of Mathematical Sciences,
Graduate School of Science, Kyoto University, Japan.
Mar. 2016: Doctor of Philosophy in the field of Mathematical Informatics from Department of Mathematical Informatics,
Graduate School of Information Science and Technology, University of Tokyo, Japan.
Work
Feb. 2013 – Mar. 2013: Project Assistant of JST ERATO Kawarabayashi Large Graph Project (Link)
"The Network Graph Theories and Optimization" Group.
Apr. 2013 – Mar. 2016: Research Fellow of the Japan Society for the Promotion of Science (DC1).
Apr. 2016 – Feb. 2020: Assistant Professor at Osaka University.
Aug. 2017 – Feb. 2020: Visiting Researcher at Discrete Optimization Unit, RIKEN Center for Advanced Intelligence Project.
Mar. 2020 – Aug. 2021: Associate Professor at Kyushu University.
Jun. 2020 – Oct. 2020: Visiting Researcher at Discrete Optimization Unit, RIKEN Center for Advanced Intelligence Project.
Sep. 2021 – Today: Associate Professor at Osaka University.
Joint Research
Apr. 2013 – Mar. 2018: Research Collaborator of JST ERATO Kawarabayashi Large Graph Project (Link)
"The Network Graph Theories and Optimization" Group.
Aug. 2013 – Sep. 2013: Visit to NEC Laboratories at Kawasaki, Kanagawa, Japan.
Feb. 2014 – Mar. 2014: Visit to NEC Laboratories America at Cupertino, California, U.S.
Oct. 2014 – Mar. 2020: Research Collaborator of "Developing Optimal Modeling Methods for LargeScale Complex Systems" Team (Link)
in JST CREST "Modeling Methods allied with Modern Mathematics" Area.
Sep. 2019 – Nov. 2019: Visit to Egerváry Research Group on Combinatorial Optimization (EGRES) in Eötvös Loránd University, Hungary.
Classes
Oct. 2013 – Mar. 2014: Teaching Assistant of the class "Algorithm Design" at Department of Mathematical Informatics,
Graduate School of Information Science and Technology, University of Tokyo.
Oct. 2014 – Mar. 2015: Teaching Assistant of the class "Algorithm Design" at Department of Mathematical Informatics,
Graduate School of Information Science and Technology, University of Tokyo.
Apr. 2015 – Aug. 2015: Teaching Assistant of "FirstYear Seminar for Natural Sciences Students" (Theme: Introduction to Operations Research)
at College of Arts and Sciences, University of Tokyo.
1st Semester in 2017: "Information Literacy A" at Division of Applied Science, School of Engineering, Osaka University.
2nd Semester in 2017: "Exercises in Information Physics and Sciences I" at Department of Applied Physics, School of Engineering, Osaka University.
1st Semester in 2018: "Information Literacy A" at Division of Applied Science, School of Engineering, Osaka University.
2nd Semester in 2018: "Exercises in Information Physics and Sciences I" at Department of Applied Physics, School of Engineering, Osaka University.
2nd Semester in 2019: "Exercises in Information Physics and Sciences I" at Department of Applied Physics, School of Engineering, Osaka University.
1st Semester in 2020: "Introduction to Computational Complexity"
at Section of Informatics in Department of Physics, School of Science, Kyushu University.
2nd Semester in 2020: "Study on Information Science"
at Section of Informatics in Department of Physics, School of Science, Kyushu University.
1st Semester in 2021: "Introduction to Computational Complexity"
at Section of Informatics in Department of Physics, School of Science, Kyushu University.
2nd Semester in 2021: "Mathematical Programming" at Department of Applied Physics, School of Engineering, Osaka University.
2nd Semester in 2021: "Mathematical Analysis II" at School of Engineering, Osaka University.
1st Semester in 2022: "Mathematical Programming" at Department of Information and Physical Sciences, Graduate School of Information Science and Technology, Osaka University.
1st Semester in 2022: "Advanced Operations Research" at Department of Information and Physical Sciences, Graduate School of Information Science and Technology, Osaka University.
2nd Semester in 2022: "Mathematical Programming" at Department of Applied Physics, School of Engineering, Osaka University.
2nd Semester in 2022: "Mathematical Analysis II" at School of Engineering, Osaka University.
Grants
Apr. 2013 – Mar. 2016: GrantinAid for JSPS Research Fellow (No. 13J02522).
Aug. 2016 – Mar. 2018: JSPS KAKENHI, GrantinAid for Research Activity Startup (No. 16H06931).
Dec. 2016 – Mar. 2018: JST ACTI "Information and Future" (No. JPMJPR16UR).
Apr. 2020 – Mar. 2024: JSPS KAKENHI, GrantinAid for EarlyCareer Scientists (No. 20K19743).
Apr. 2020 – Mar. 2025: JSPS KAKENHI, GrantinAid for Scientific Research (A) (No. 20H00605). [CoInvestigator]
Societies
Apr. 2013 – Mar. 2016: A student member of the Operations Research Society of Japan (No. 05000219).
During 2015: A student member of the Institute of Electrical and Electronics Engineers (IEEE) (No. 93303728).
Apr. 2016 – Today: A member of the Operations Research Society of Japan (No. 05000219).
Apr. 2018 – Today: A member of the Japan Society for Industrial and Applied Mathematics (No. 1645965504).
Research Interests
Combinatorial Optimization, Graph Theory, Matroid Theory, Discrete Algorithms, Game Theory, Quantum Computing, etc.
Pubilications
Refereed Journal Articles

Yoichi Iwata, Yutaro Yamaguchi:
Finding a Shortest Nonzero Path in GroupLabeled Graphs.
Combinatorica, in press (available online). (DOI: 10.1007/s004930214736x).

Kristóf Bérczi, Tamás Király, Tamás Schwarcz, Yutaro Yamaguchi, Yu Yokoi:
Hypergraph Characterization of Split Matroids.
Journal of Combinatorial Theory, Series A, 194 (2023), No. 105697. (DOI: 10.1016/j.jcta.2022.105697).

Takanori Maehara, So Nakashima, Yutaro Yamaguchi:
Multiple KnapsackConstrained Monotone DRSubmodular Maximization on Distributive Lattice — Continuous Greedy Algorithm on Median Complex —.
Mathematical Programming (Series A), 194 (2022), pp. 85–119. (DOI: 10.1007/s10107021016207).

Kristóf Bérczi, Tamás Király, Yutaro Yamaguchi, Yu Yokoi:
Approximation by Lexicographically Maximal Solutions in Matching and Matroid Intersection Problems.
Theoretical Computer Science, 910 (2022), pp. 48–53. (DOI: 10.1016/j.tcs.2022.01.035)

Yasuaki Kobayashi, Shinichi Nakano, Kei Uchizawa, Takeaki Uno, Yutaro Yamaguchi, Katsuhisa Yamanaka:
An O(n^{2})Time Algorithm for Computing a MaxMin 3Dispersion on a Convex Polygon.
IEICE Transactions on Information and Systems, E105D:3 (2022), pp. 503–507. (DOI: 10.1587/transinf.2021FCP0013)

Yuya Masumura, Taihei Oki, Yutaro Yamaguchi:
Dynamic Programming Approach to the Generalized Minimum Manhattan Network Problem.
Algorithmica, 83 (2021), pp. 3681–3714. (DOI: 10.1007/s0045302100868x)

Kristóf Bérczi, Tamás Schwarcz, Yutaro Yamaguchi:
List Coloring of Two Matroids through Reduction to Partition Matroids.
SIAM Journal on Discrete Mathematics, 35:3 (2021), pp. 2192–2209. (DOI: 10.1137/20M1385615).

Yuval Filmus, Yasushi Kawase, Yusuke Kobayashi, Yutaro Yamaguchi:
Tight Approximation for Unconstrained XOS Maximization.
Mathematics of Operations Research, 46:4 (2021), pp. 1599–1610. (DOI: 10.1287/moor.2020.1088)

Yasushi Kawase, Yusuke Kobayashi, Yutaro Yamaguchi:
Finding a Path with Two Labels Forbidden in GroupLabeled Graphs.
Journal of Combintorial Theory, Series B, 143 (2020), pp. 65–122. (DOI: 10.1016/j.jctb.2019.12.001).

Takanori Maehara, Yutaro Yamaguchi:
Stochastic Packing Integer Programs with Few Queries.
Mathematical Programming (Series A), 182 (2020), pp. 141–174. (DOI: 10.1007/s1010701901388x).

Yasushi Kawase, Yutaro Yamaguchi, Yu Yokoi:
Subgame Perfect Equilibria of Sequential Matching Games.
ACM Transactions on Economics and Computation, 7:4 (2020), No. 21, 30pp. (DOI: 10.1145/3373717)

Yasushi Kawase, Yutaro Yamaguchi:
Antimatroids Induced by Matchings.
Discrete Applied Mathematics, 257 (2019), pp. 342–349. (DOI: 10.1016/j.dam.2018.09.032)

Kristóf Bérczi, Satoru Iwata, Jun Kato, Yutaro Yamaguchi:
Making Bipartite Graphs DMirreducible.
SIAM Journal on Discrete Mathematics, 32:1 (2018), pp. 560–590. (DOI: 10.1137/16M1106717)

Shinichi Tanigawa, Yutaro Yamaguchi:
Packing Nonzero Apaths via Matroid Matching.
Discrete Applied Mathematics, 214 (2016), pp. 169–178. (DOI: 10.1016/j.dam.2016.06.001)

Yutaro Yamaguchi:
Realizing Symmetric Set Functions as Hypergraph Cut Capacity.
Discrete Mathematics, 339:8 (2016), pp. 2007–2017. (DOI: 10.1016/j.disc.2016.02.010)

Yutaro Yamaguchi:
Packing Apaths in GroupLabelled Graphs via Linear Matroid Parity.
SIAM Journal on Discrete Mathematics, 30:1 (2016), pp. 474–492. (DOI: 10.1137/130949877)

Yutaro Yamaguchi, Anna Ogawa, Akiko Takeda, Satoru Iwata:
Cyber Security Analysis of Power Networks by Hypergraph Cut Algorithms.
IEEE Transactions on Smart Grid, 6:5 (2015), pp. 2189–2199. (DOI: 10.1109/TSG.2015.2394791)
Refereed Conference Proceedings

Yasuaki Kobayashi, Shinichi Nakano, Kei Uchizawa, Takeaki Uno, Yutaro Yamaguchi, Katsuhisa Yamanaka:
MaxMin 3dispersion on a Convex Polygon.
Proceedings of the 37th European Workshop on Computational Geometry (EuroCG 2021), No. 9, 7pp.

Yuya Masumura, Taihei Oki, Yutaro Yamaguchi:
Dynamic Programming Approach to the Generalized Minimum Manhattan Network Problem.
Proceedings of the 6th International Symposium on Combinatorial Optimization (ISCO 2020), pp. 237–248. (DOI: 10.1007/9783030532628_20)

Yutaro Yamaguchi: A Strongly Polynomial Algorithm for Finding a Shortest Nonzero Path in GroupLabeled Graphs.
Proceedings of the 31st Annual ACMSIAM Symposium on Discrete Algorithms (SODA 2020), pp. 1923–1932. (DOI: 10.1137/1.9781611975994.118)

Yoichi Iwata, Yutaro Yamaguchi, Yuichi Yoshida:
0/1/all CSPs, HalfIntegral Apath Packing, and LinearTime FPT Algorithms.
Proceedings of the 59th Annual IEEE Symposium on Foundations of Computer Science (FOCS 2018), pp. 462–473. (DOI: 10.1109/FOCS.2018.00051)

Yasushi Kawase, Yutaro Yamaguchi, Yu Yokoi:
Computing a Subgame Perfect Equilibrium of a Sequential Matching Game.
Proceedings of the 19th ACM Conference on Economics and Computation (EC 2018), pp. 131–148. (DOI: 10.1145/3219166.3219200)

Takanori Maehara, Yutaro Yamaguchi:
Stochastic Packing Integer Programs with Few Queries.
Proceedings of the 29th Annual ACMSIAM Symposium on Discrete Algorithms (SODA 2018), pp. 293–310. (DOI: 10.1137/1.9781611975031.21)

Yutaro Yamaguchi:
Shortest Disjoint Spaths via Weighted Linear Matroid Parity.
Proceedings of the 27th International Symposium on Algorithms and Computation (ISAAC 2016), No. 63, 13pp. (DOI: 10.4230/LIPIcs.ISAAC.2016.63)

Naoto Ohsaka, Yutaro Yamaguchi, Naonori Kakimura, Kenichi Kawarabayashi:
Maximizing Timedecaying Influence in Social Networks.
Proceedings of European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases (ECMLPKDD 2016), pp. 132–147. (DOI: 10.1007/9783319461281_9)

Yasushi Kawase, Yusuke Kobayashi, Yutaro Yamaguchi:
Finding a Path in GroupLabeled Graphs with Two Labels Forbidden.
Proceedings of the 42nd International Colloquium on Automata, Languages, and Programming (ICALP 2015), pp. 797–809. (DOI: 10.1007/9783662476727_65)

Yutaro Yamaguchi, Anna Ogawa, Akiko Takeda, Satoru Iwata:
Cyber Security Analysis of Power Networks by Hypergraph Cut Algorithms.
Proceedings of the 5th IEEE International Conference on Smart Grid Communications (SmartGridComm 2014), pp. 830–835. (DOI: 10.1109/SmartGridComm.2014.7007750)

Yutaro Yamaguchi:
Packing Apaths in GroupLabelled Graphs via Linear Matroid Parity.
Proceedings of the 25th Annual ACMSIAM Symposium on Discrete Algorithms (SODA 2014), pp. 562–569. (DOI: 10.1137/1.9781611973402.42)
Preprints

Kristóf Bérczi, Tamás Király, Yutaro Yamaguchi, Yu Yokoi:
Matroid Intersection under Restricted Oracles.
arXiv preprints, arXiv:2209.14516 (Link), 2022.

Kohei Morita, Shinya Shiroshita, Yutaro Yamaguchi, Yu Yokoi:
Maintaining Optimality in Assignment Problem against Weight Updates around Vertices.
arXiv preprints, arXiv:2208.11325 (Link), 2022.

Kristóf Bérczi, Tamás Király, Tamás Schwarcz, Yutaro Yamaguchi, Yu Yokoi:
Hypergraph Characterization of Split Matroids.
arXiv preprints, arXiv:2202.04371 (Link), 2022.
* This also appeared as an EGRES Technical Report, TR202207 (Link).

Shinichi Minato, Mutsunori Banbara, Takashi Horiyama, Jun Kawahara, Ichigaku Takigawa, Yutaro Yamaguchi:
IntervalMemoized Backtracking on ZDDs for Fast Enumeration of All Lower Cost Solutions.
arXiv preprints, arXiv:2201.08118 (Link), 2022.

Kristóf Bérczi, Tamás Király, Yutaro Yamaguchi, Yu Yokoi:
Approximation by Lexicographically Maximal Solutions in Matching and Matroid Intersection Problems.
arXiv preprints, arXiv:2107.09897 (Link), 2021.
* This also appeared as an EGRES Technical Report, TR202108 (Link).

Yuya Masumura, Taihei Oki, Yutaro Yamaguchi:
Dynamic Programming Approach to the Generalized Minimum Manhattan Network Problem.
arXiv preprints, arXiv:2004.11166 (Link), 2020.

Kristóf Bérczi, Tamás Schwarcz, Yutaro Yamaguchi:
List Coloring of Two Matroids through Reduction to Partition Matroids.
arXiv preprints, arXiv:1911.10485 (Link), 2019.
* This also appeared as an EGRES Technical Report, TR202010 (Link).

Takanori Maehara, So Nakashima, Yutaro Yamaguchi:
Multiple KnapsackConstrained Monotone DRSubmodular Maximization on Distributive Lattice — Continuous Greedy Algorithm on Median Complex —.
arXiv preprints, arXiv:1907.04279 (Link), 2019.

Takanori Maehara, Yutaro Yamaguchi:
Stochastic Monotone Submodular Maximization with Queries.
arXiv preprints, arXiv:1907.04083 (Link), 2019.

Yoichi Iwata, Yutaro Yamaguchi:
Finding a Shortest Nonzero Path in GroupLabeled Graphs.
arXiv preprints, arXiv:1906.04062 (Link), 2019.
* A preliminary version was entitled A Strongly Polynomial Algorithm for Finding a Shortest Nonzero Path in GroupLabeled Graphs.

Yuval Filmus, Yasushi Kawase, Yusuke Kobayashi, Yutaro Yamaguchi:
Tight Approximation for Unconstrained XOS Maximization.
arXiv preprints, arXiv:1811.09045 (Link), 2018.

Yasushi Kawase, Yutaro Yamaguchi, Yu Yokoi:
Subgame Perfect Equilibria of Sequential Matching Games.
arXiv preprints, arXiv:1804.10353 (Link), 2018.
* A preliminary version was entitled Computing a Subgame Perfect Equilibrium of a Sequential Matching Game.

Takanori Maehara, Yutaro Yamaguchi:
Stochastic Packing Integer Programs with Few Queries.
arXiv preprints, arXiv:1707.04020 (Link), 2017.

Yasushi Kawase, Yutaro Yamaguchi:
Antimatroids Induced by Matchings.
arXiv preprints, arXiv:1705.05510 (Link), 2017.

Yoichi Iwata, Yutaro Yamaguchi, Yuichi Yoshida:
0/1/all CSPs, HalfIntegral Apath Packing, and LinearTime FPT Algorithms.
arXiv preprints, arXiv:1704.02700 (Link), 2017.
* A preliminary version was entitled LinearTime FPT Algorithms via HalfIntegral Nonreturning Apath Packing.

Kristóf Bérczi, Satoru Iwata, Jun Kato, Yutaro Yamaguchi:
Making Bipartite Graphs DMirreducible.
arXiv preprints, arXiv:1612.08828 (Link), 2016.
* A preliminary version had appeared as a Mathematical Engineering Technical Report, METR 201614 (Link).

Yoshinobu Kawahara, Yutaro Yamaguchi:
Parametric Maxflows for Structured Sparse Learning with Convex Relaxations of Submodular Functions.
arXiv preprints, arXiv:1509.03946 (Link), 2015.

Yutaro Yamaguchi:
Shortest Disjoint Nonzero Apaths via Weighted Matroid Matching.
Mathematical Engineering Technical Reports, METR 201520 (Link), Department of Mathematical Engineering and Information Physics, Faculty of Engineering, University of Tokyo, Japan, 2015.

Yasushi Kawase, Yusuke Kobayashi, Yutaro Yamaguchi:
Finding a Path with Two Labels Forbidden in GroupLabeled Graphs.
arXiv preprints, arXiv:1807.00109 (Link), 2018.
* A preliminary version, entitled Finding a Path in GroupLabeled Graphs with Two Labels Forbidden, had appeared in 2014 as a Mathematical Engineering Technical Report, METR 201441 (Link).

Yutaro Yamaguchi:
Realizing Symmetric Set Functions as Hypergraph Cut Capacity.
Mathematical Engineering Technical Reports, METR 201428 (Link), Department of Mathematical Engineering and Information Physics, Faculty of Engineering, University of Tokyo, Japan, 2014.

Yutaro Yamaguchi, Anna Ogawa, Akiko Takeda, Satoru Iwata:
Cyber Security Analysis of Power Networks by Hypergraph Cut Algorithms.
Mathematical Engineering Technical Reports, METR 201412 (Link), Department of Mathematical Engineering and Information Physics, Faculty of Engineering, University of Tokyo, Japan, 2014.

Yutaro Yamaguchi:
Packing Apaths in GroupLabelled Graphs via Linear Matroid Parity.
Mathematical Engineering Technical Reports, METR 201335 (Link), Department of Mathematical Engineering and Information Physics, Faculty of Engineering, University of Tokyo, Japan, 2013.

Shinichi Tanigawa, Yutaro Yamaguchi:
Packing Nonzero Apaths via Matroid Matching.
Mathematical Engineering Technical Reports, METR 201308 (Link), Department of Mathematical Engineering and Information Physics, Faculty of Engineering, University of Tokyo, Japan, 2013.
Theses
[Ph.D. Thesis] Combinatorial Optimization on GroupLabeled Graphs. (Supervised by Prof. Satoru Iwata)
Department of Mathematical Informatics, Graduate School of Information Science and Technology, University of Tokyo, Japan, March 2016.
[Master's Thesis] Structures and Algorithms for PathPacking Problems. (Supervised by Prof. Satoru Iwata)
Department of Mathematical Sciences, Graduate School of Science, Kyoto University, Japan, January 2013.
Others

Ryoma Sin'ya, Yutaro Yamaguchi, Masaki Nakamura:
On Regular Languages Approximable by Testing Appearance of Subwords.
Proceedings of the 24th Workshop on Programming and Programming Languages (PPL 2022), 2022.
* This article is written in Japanese, and the English title is informal.

Takanori Maehara, Yutaro Yamaguchi:
A Unified Framework for Combinatorial Optimization with Queries.
Bulletin of the Japan Society for Industrial and Applied Mathematics, 29:2, pp. 2–9, 2019.
* This article is written in Japanese except for the abstract, and the English title is informal.

Yutaro Yamaguchi:
An Efficient DijkstraLike Algorithm for Finding a Shortest Nonzero Path in GroupLabeled Graphs.
Proceedings of the 11th HungarianJapanese Symposium on Discrete Mathematics and Its Applications, pp. 479–485, 2019.

Takanori Maehara, Yutaro Yamaguchi:
Stochastic Monotone Submodular Maximization with Queries.
Proceedings of the 11th HungarianJapanese Symposium on Discrete Mathematics and Its Applications, pp. 46–56, 2019.

Yusuke Kobayashi, Yutaro Yamaguchi:
On Applications of Weighted Linear Matroid Parity.
Proceedings of the 10th JapaneseHungarian Symposium on Discrete Mathematics and Its Applications, pp. 363–372, 2017.

Ryohei Fujimaki, Yutaro Yamaguchi, Riki Eto:
Piecewise Sparse Linear Classification via Factorized Asymptotic Bayesian Inference.
Transactions of the Japanese Society for Artificial Intelligence, 31:6 (2016), No. AI30I_19 (Link).
* This article is written in Japanese except for the title and abstract.

Yutaro Yamaguchi:
Realizing Symmetric Set Functions as Hypergraph Cut Capacity.
Proceedings of the 9th HungarianJapanese Symposium on Discrete Mathematics and Its Applications, pp. 137–146, 2015.

Yasushi Kawase, Yusuke Kobayashi, Yutaro Yamaguchi:
Finding a Zero Path in Z_{3}Labeled Graphs.
RIMS Kokyuroku "Optimization Algorithms: Theory, Application and Implementation," No. 1931, pp. 148–160 (Link), Research Institute for Mathematical Sciences (RIMS), Kyoto University, Japan, 2015.
* This is a resume of the technical report METR 201441.

Yutaro Yamaguchi:
Packing Apaths in GroupLabelled Graphs via Linear Matroid Parity.
RIMS Kokyuroku "Optimization: Theory and Application," No. 1879, pp. 157–163 (Link), Research Institute for Mathematical Sciences (RIMS), Kyoto University, Japan, 2014.
* This is a resume of the sametitle paper in SODA 2014.

Yutaro Yamaguchi:
Packing Apaths in GroupLabelled Graphs via Matroid Matching.
Proceedings of the 8th JapaneseHungarian Symposium on Discrete Mathematics and Its Applications, pp. 495–503, 2013.
International Talks

Yutaro Yamaguchi:
A Strongly Polynomial Algorithm for Finding a Shortest Nonzero Path in GroupLabeled Graphs.
The 31st Annual ACMSIAM Symposium on Discrete Algorithms (SODA 2020), Salt Lake City, Utah, U.S., January 2020. (Slide)

Yutaro Yamaguchi:
An Efficient DijkstraLike Algorithm for Finding a Shortest Nonzero Path in GroupLabeled Graphs.
The 11th HungarianJapanese Symposium on Discrete Mathematics and Its Applications, Tokyo, Japan, May 2019. (Slide)

Kristóf Bérczi, Satoru Iwata, Jun Kato, Yutaro Yamaguchi:
Making Bipartite Graphs DMirreducible.
The 23rd International Symposium on Mathematical Programming (ISMP 2018), Bordeaux, France, July 2018. (Slide)

Yusuke Kobayashi, Yutaro Yamaguchi:
On Applications of Weighted Linear Matroid Parity.
The 10th JapaneseHungarian Symposium on Discrete Mathematics and Its Applications, Budapest, Hungary, May 2017. (Slide)

Yutaro Yamaguchi:
Shortest Disjoint Spaths via Weighted Linear Matroid Parity.
The 27th International Symposium on Algorithms and Computation (ISAAC 2016), Sydney, Australia, December 2016. (Slide)

Satoru Iwata, Jun Kato, Yutaro Yamaguchi:
How to Make a Bipartite Graph DMirreducible by Adding Edges.
The Japanese Conference on Combinatorics and its Applications (JCCA 2016), Kyoto, Japan, May 2016. (Slide)

Satoru Iwata, Jun Kato, Yutaro Yamaguchi:
How to Make a Bipartite Graph DMirreducible by Adding Edges.
NII Shonan Meeting Seminar 071 "Current Trend in Combinatorial Optimization," Kanagawa, Japan, April 2016. (Slide)

Yutaro Yamaguchi:
Packing Nonzero Apaths via Linear Matroid Parity.
The 6th Cargèse Workshop on Combinatorial Optimization, Cargèse, Corsica, France, September 2015. (Slide)

Shinichi Tanigawa, Yutaro Yamaguchi:
Packing Nonzero Apaths via Matroid Matching.
The 22nd International Symposium on Mathematical Programming (ISMP 2015), Pittsburgh, Pennsylvania, U.S., July 2015. (Slide)

Yasushi Kawase, Yusuke Kobayashi, Yutaro Yamaguchi:
Finding a Path in GroupLabeled Graphs with Two Labels Forbidden.
The 42nd International Colloquium on Automata, Languages, and Programming (ICALP 2015), Kyoto, Japan, July 2015. (Slide)

Yutaro Yamaguchi:
Realizing Symmetric Set Functions as Hypergraph Cut Capacity.
The 9th HungarianJapanese Symposium on Discrete Mathematics and Its Applications, Fukuoka, Japan, June 2015. (Slide)

Yutaro Yamaguchi:
Packing Apaths in GroupLabeled Graphs via Linear Matroid Parity.
IMA Annual Program Year Workshop "Convexity and Optimization: Theory and Applications," Minneapolis, Minnesota, U.S., February 2015. (Poster, Summary)

Yutaro Yamaguchi, Anna Ogawa, Akiko Takeda, Satoru Iwata:
Cyber Security Analysis of Power Networks by Hypergraph Cut Algorithms.
The 5th IEEE International Conference on Smart Grid Communications (SmartGridComm 2014), Venice, Italy, November 2014. (Slide)

Yutaro Yamaguchi:
Packing Apaths in GroupLabelled Graphs via Linear Matroid Parity.
The 25th Annual ACMSIAM Symposium on Discrete Algorithms (SODA 2014), Portland, Oregon, U.S., January 2014. (Slide)

Yutaro Yamaguchi:
Packing Apaths in GroupLabelled Graphs via Matroid Matching.
The 8th JapaneseHungarian Symposium on Discrete Mathematics and Its Applications, Veszprém, Hungary, June 2013.
Visited Cities

Gárdony (+ Mislolc) in Hungary: July 2022.
The 12th Emléktábla Workshop.

Salt Lake City in Utah, U.S.: January 2020.
Talk in the 31st Annual ACMSIAM Symposium on Discrete Algorithms (SODA 2020).

Eger, Tokaj, Visegrad, and Szeged in Hungary, Wien (Vienna) in Austria, Praha (Prague) in Czech Republic, Dubrovnik in Croatia, and Bratislava in Slovakia: October – November 2019.
Private Visits (Weekend Trips).

Bordeaux in France: July 2018.
Talk in the 23rd International Symposium on Mathematical Programming (ISMP 2018).

Ithaca in New York, U.S.: June 2018.
The 19th ACM Conference on Economics and Computation (EC 2018).

New Orleans in Louisiana, U.S.: January 2018.
The 29th Annual ACMSIAM Symposium on Discrete Algorithms (SODA 2018).

Barcelona in Spain: January 2017.
The 28th Annual ACMSIAM Symposium on Discrete Algorithms (SODA 2017).

Sydney in Australia: December 2016.
Talk in the 27th International Symposium on Algorithms and Computation (ISAAC 2016).

Arlington in Virginia, U.S.: January 2016.
The 27th Annual ACMSIAM Symposium on Discrete Algorithms (SODA 2016).

Bonn (+ Frankfurt, Stuttgart, München (Munich), Köln, and Mainz) in Germany: October 2015.
HIM Trimester Program "Combinatorial Optimization," Rigidity Workshop.

Cargèse in Corsica (+ Paris) in France: September 2015.
Talk in the 6th Cargèse Workshop on Combinatorial Optimization.

Seattle in Washington, U.S.: August 2015.
Private Visit.

Pittsburgh in Pennsylvania, U.S.: July 2015.
Talk in the 22nd International Symposium on Mathematical Programming (ISMP 2015).

Minneapolis in Minnesota, U.S.: February 2015.
IMA Annual Program Year Workshop "Convexity and Optimization: Theory and Applications."

Venezia (Venice) in Italy: November 2014.
Talk in the 5th IEEE International Conference on Smart Grid Communications (SmartGridComm 2014).

Budapest in Hungary:
 Summer School in Mathematics at Institute of Mathematics in Eötvös Loránd University; June 2014.
 Talk in the 10th JapaneseHungarian Symposium on Discrete Mathematics and Its Applications; May 2017.
 Research Visit to Egerváry Research Group on Combinatorial Optimization (EGRES); September – November 2019, June 2022.

Silicon Valley (San Jose, Mountain View, and Cupertino) and San Francisco (+ Yosemite Park) in California, U.S.: February – March 2014.
Joint Research to NEC Laboratories America at Cupertino.

Portland in Oregon, U.S.: January 2014.
Talk in the 25th Annual ACMSIAM Symposium on Discrete Algorithms (SODA 2014).

Veszprém in Hungary: June 2013.
Talk in the 8th JapaneseHungarian Symposium on Discrete Mathematics and Its Applications.

Zurich and Engelberg in Switzerland: March 2012.
The 1st ETHJapan Symposium for the Promotion of Academic Exchanges and the 1st ETHJapan Workshop on Science and Computing.

Toronto and Waterloo in Canada: September 2011.
Invited to a special program on Quantum Computing at Institute for Quantum Computing (IQC) in University of Waterloo.