Kenji Hashimoto

Orcid: 0000-0003-2300-6766

According to our database1, Kenji Hashimoto authored at least 155 papers between 1998 and 2024.

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Bibliography

2024
Semidirect Product Decompositions for Periodic Regular Languages.
CoRR, 2024

2023
An ambiguity hierarchy of weighted context-free grammars.
Theor. Comput. Sci., September, 2023

Trajectory-free dynamic locomotion using key trend states for biped robots with point feet.
Sci. China Inf. Sci., August, 2023

Weighted Multiple Context-Free Grammars.
IEICE Trans. Inf. Syst., March, 2023

A heuristic gait template planning and dynamic motion control for biped robots.
Robotica, February, 2023

Characterizing attributed tree translations in terms of macro tree transducers.
Theor. Comput. Sci., 2023

TCNAEC: Advancing Sentence-Level Revision Evaluation Through Diverse Non-Native Academic English Insights.
IEEE Access, 2023

When Is Context-Freeness Distinguishable from Regularity? an Extension of Parikh's Theorem.
Proceedings of the Implementation and Application of Automata, 2023

Data Augmentation for SentRev using Back-Translation of Lexical Bundles.
Proceedings of the 37th Pacific Asia Conference on Language, 2023

Exploiting Paraphrasers and Inverse Paraphrasers: A Novel Approach to Enhance English Writing Fluency through Improved Style Transfer Training Data.
Proceedings of the 2023 7th International Conference on Computer Science and Artificial Intelligence, 2023

Walking Motion Generation of Bipedal Robot Based on Planar Covariation Using Deep Reinforcement Learning.
Proceedings of the Synergetic Cooperation Between Robots and Humans - Proceedings of the CLAWAR 2023 Conference, 2023

Leg Mechanism of a Quadruped Wheeled Robot with a 4-DoF Spherical Parallel Link Mechanism.
Proceedings of the Synergetic Cooperation Between Robots and Humans - Proceedings of the CLAWAR 2023 Conference, 2023

2021
Monopod robot prototype with reaction wheel for hopping and posture stabilisation.
Int. J. Mechatronics Autom., 2021

Solving Rep-tile by Computers: Performance of Solvers and Analyses of Solutions.
CoRR, 2021

A vertical jump optimization strategy for one-legged robot with variable reduction ratio joint.
Proceedings of the 20th IEEE-RAS International Conference on Humanoid Robots, 2021

2020
Placing and scheduling many depth sensors for wide coverage and efficient mapping in versatile legged robots.
Int. J. Robotics Res., 2020

Crawling and foot trajectory modification control for legged robot on uneven terrain.
Int. J. Mechatronics Autom., 2020

Special Issue on Disaster Robotics - ImPACT Tough Robotics Challenge.
Adv. Robotics, 2020

Mechanics of humanoid robot.
Adv. Robotics, 2020

A Low Cognitive Load and Reduced Motion Sickness Inducing Zoom Method Based on Typical Gaze Movement for Master-Slave Teleoperation Systems with HMD.
Proceedings of the 2020 IEEE/SICE International Symposium on System Integration, 2020

Flow Compensation for Hydraulic Direct-Drive System with a Single-rod Cylinder Applied to Biped Humanoid Robot.
Proceedings of the 2020 IEEE International Conference on Robotics and Automation, 2020

Locating Mechanical Switches Using RGB-D Sensor Mounted on a Disaster Response Robot.
Proceedings of the Intelligent Robotics and Industrial Applications using Computer Vision 2020, 2020

2019
WAREC-1 - A Four-Limbed Robot with Advanced Locomotion and Manipulation Capabilities.
Proceedings of the Disaster Robotics - Results from the ImPACT Tough Robotics Challenge, 2019

Quantifying Dynamic Leakage - Complexity Analysis and Model Counting-based Calculation -.
IEICE Trans. Inf. Syst., 2019

On the Compositionality of Dynamic Leakage and Its Application to the Quantification Problem.
CoRR, 2019

Experimental Validation of Hydraulic Interlocking Drive System for Biped Humanoid Robot.
Proceedings of the 2019 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2019

Disaster Response Robot's Autonomous Manipulation of Valves in Disaster Sites Based on Visual Analyses of RGBD Images.
Proceedings of the 2019 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2019

Moving onto High Steps for a Four-limbed Robot with Torso Contact.
Proceedings of the 2019 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2019

Experimental Validation of High-Efficiency Hydraulic Direct-Drive System for a Biped Humanoid Robot - Comparison with Valve-Based Control System.
Proceedings of the International Conference on Robotics and Automation, 2019

Robotic Ankle Mechanism Capable of Kicking While Jumping and Running and Adaptable to Change in Running Speed.
Proceedings of the 19th IEEE-RAS International Conference on Humanoid Robots, 2019

Automatic Estimation of the Position and Orientation of the Drill to Be Grasped and Manipulated by the Disaster Response Robot Based on Analyzing Depth Camera Information.
Proceedings of the Intelligent Robotics and Industrial Applications using Computer Vision 2019, 2019

Graph Compression by Tree Grammars and Direct Evaluation of Regular Path Query.
Proceedings of the IEEE 4th International Conference on Computer and Communication Systems, 2019

2018
Direct Update of XML Documents with Data Values Compressed by Tree Grammars.
IEICE Trans. Inf. Syst., 2018

Counting Algorithms for Recognizable and Algebraic Series.
IEICE Trans. Inf. Syst., 2018

Trunk motion control during the flight phase while hopping considering angular momentum of a humanoid.
Adv. Robotics, 2018

Trajectory Optimization for High-Power Robots with Motor Temperature Constraints.
Proceedings of the Towards Autonomous Robotic Systems - 19th Annual Conference, 2018

Jumping Motion Generation of a Humanoid Robot Utilizing Human-Like Joint Elasticity.
Proceedings of the 2018 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2018

End-effector with a Hook and Two Fingers for the Locomotion and Simple Work of a Four-limbed Robot.
Proceedings of the 2018 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2018

Error Compensation System with Proximity Sensors for Vertical Ladder Climbing of the Robot "WAREC-1".
Proceedings of the 18th IEEE-RAS International Conference on Humanoid Robots, 2018

Downsizing the Motors of a Biped Robot Using a Hydraulic Direct Drive System.
Proceedings of the 18th IEEE-RAS International Conference on Humanoid Robots, 2018

Effects of Biped Humanoid Robot Walking Gaits on Sparse Visual Odometry Algorithms.
Proceedings of the 18th IEEE-RAS International Conference on Humanoid Robots, 2018

Automatic Detection of Valves with Disaster Response Robot on Basis of Depth Camera Information.
Proceedings of the 2018 Digital Image Computing: Techniques and Applications, 2018

2017
Head stabilization in a humanoid robot: models and implementations.
Auton. Robots, 2017

Crawling gait generation method for four-limbed robot based on normalized energy stability margin.
Proceedings of the IEEE International Symposium on Safety, Security and Rescue Robotics, 2017

WAREC-1 - A four-limbed robot having high locomotion ability with versatility in locomotion styles.
Proceedings of the IEEE International Symposium on Safety, Security and Rescue Robotics, 2017

Maximize-perturb-minimize: A fast and effective heuristic to obtain sets of locally optimal robot postures.
Proceedings of the 2017 IEEE International Conference on Robotics and Biomimetics, 2017

Planning and control of stable ladder climbing motion for the four-limbed Robot "WAREC-1".
Proceedings of the 2017 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2017

A four-limbed disaster-response robot having high mobility capabilities in extreme environments.
Proceedings of the 2017 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2017

Angular momentum compensation in yaw direction using upper body based on human running.
Proceedings of the 2017 IEEE International Conference on Robotics and Automation, 2017

SGD for robot motion? The effectiveness of stochastic optimization on a new benchmark for biped locomotion tasks.
Proceedings of the 17th IEEE-RAS International Conference on Humanoid Robotics, 2017

2016
Footstep Planning for Slippery and Slanted Terrain Using Human-Inspired Models.
IEEE Trans. Robotics, 2016

Development of a Humorous Humanoid Robot Capable of Quick-and-Wide Arm Motion.
IEEE Robotics Autom. Lett., 2016

On Stereo Confidence Measures for Global Methods: Evaluation, New Model and Integration into Occupancy Grids.
IEEE Trans. Pattern Anal. Mach. Intell., 2016

Heel-Contact Toe-Off Walking Pattern Generator Based on the Linear Inverted Pendulum.
Int. J. Humanoid Robotics, 2016

Query Rewriting for Nondeterministic Tree Transducers.
IEICE Trans. Inf. Syst., 2016

Determinacy and Subsumption of Single-Valued Bottom-Up Tree Transducers.
IEICE Trans. Inf. Syst., 2016

Trajectory generation for ladder climbing motion with separated path and time planning.
Proceedings of the 2016 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2016

Cat-inspired mechanical design of self-adaptive toes for a legged robot.
Proceedings of the 2016 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2016

Design of four-arm four-crawler disaster response robot OCTOPUS.
Proceedings of the 2016 IEEE International Conference on Robotics and Automation, 2016

Crawling gait for four-limbed robot and simulation on uneven terrain.
Proceedings of the 16th IEEE-RAS International Conference on Humanoid Robots, 2016

Material recognition CNNs and hierarchical planning for biped robot locomotion on slippery terrain.
Proceedings of the 16th IEEE-RAS International Conference on Humanoid Robots, 2016

Friction from vision: A study of algorithmic and human performance with consequences for robot perception and teleoperation.
Proceedings of the 16th IEEE-RAS International Conference on Humanoid Robots, 2016

Path-time independent trajectory planning of ladder climbing with shortest path length for a four-limbed robot.
Proceedings of the 6th IEEE International Conference on Biomedical Robotics and Biomechatronics, 2016

2015
The consistency and absolute consistency problems of XML schema mappings between restricted DTDs.
World Wide Web, 2015

Biped Robot Research at Waseda University.
J. Robotics Netw. Artif. Life, 2015

Intersection of "Tokku" Special Zone, Robots, and the Law: A Case Study on Legal Impacts to Humanoid Robots.
Int. J. Soc. Robotics, 2015

Node Query Preservation for Deterministic Linear Top-Down Tree Transducers.
IEICE Trans. Inf. Syst., 2015

Utilization of Human-Like Pelvic Rotation for Running Robot.
Frontiers Robotics AI, 2015

Investigating the Effect of Relative Cultural Distance on the Acceptance of Robots.
Proceedings of the Social Robotics - 7th International Conference, 2015

A torque limiter for safe joint applied to humanoid robots against falling damage.
Proceedings of the 2015 IEEE International Conference on Robotics and Biomimetics, 2015

Running with lower-body robot that mimics joint stiffness of humans.
Proceedings of the 2015 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2015

Knee joint mechanism that mimics elastic characteristics and bending in human running.
Proceedings of the 2015 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2015

A falling motion control of humanoid robots based on biomechanical evaluation of falling down of humans.
Proceedings of the 15th IEEE-RAS International Conference on Humanoid Robots, 2015

Optimizing energy consumption and preventing slips at the footstep planning level.
Proceedings of the 15th IEEE-RAS International Conference on Humanoid Robots, 2015

2014
Autonomous online generation of a motor representation of the workspace for intelligent whole-body reaching.
Robotics Auton. Syst., 2014

Effect of the "torso protective strategy" for safe falling of a biped humanoid robot.
Proceedings of the 2014 IEEE International Conference on Robotics and Biomimetics, 2014

Uncanny valley, robot and autism: Perception of the uncanniness in an emotional gait.
Proceedings of the 2014 IEEE International Conference on Robotics and Biomimetics, 2014

Emotional gait: Effects on humans' perception of humanoid robots.
Proceedings of the 23rd IEEE International Symposium on Robot and Human Interactive Communication, 2014

13.4 A 7ns-access-time 25μW/MHz 128kb SRAM for low-power fast wake-up MCU in 65nm CMOS with 27fA/b retention current.
Proceedings of the 2014 IEEE International Conference on Solid-State Circuits Conference, 2014

On the formulation, performance and design choices of Cost-Curve Occupancy Grids for stereo-vision based 3D reconstruction.
Proceedings of the 2014 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2014

Running model and hopping robot using pelvic movement and leg elasticity.
Proceedings of the 2014 IEEE International Conference on Robotics and Automation, 2014

Bipedal humanoid robot that makes humans laugh with use of the method of comedy and affects their psychological state actively.
Proceedings of the 2014 IEEE International Conference on Robotics and Automation, 2014

Leg with rotational joint that mimics elastic characteristics of human leg in running stance phase.
Proceedings of the 14th IEEE-RAS International Conference on Humanoid Robots, 2014

Bio-inspired falling motion control for a biped humanoid robot.
Proceedings of the 14th IEEE-RAS International Conference on Humanoid Robots, 2014

Gait planning for biped locomotion on slippery terrain.
Proceedings of the 14th IEEE-RAS International Conference on Humanoid Robots, 2014

Heel-contact toe-off walking model based on the Linear Inverted Pendulum.
Proceedings of the 5th IEEE RAS/EMBS International Conference on Biomedical Robotics and Biomechatronics, 2014

2013
Cross-cultural study on human-robot greeting interaction: acceptance and discomfort by Egyptians and Japanese.
Paladyn J. Behav. Robotics, 2013

A Comparison between Two Force-Position Controllers with Gravity Compensation Simulated on a Humanoid Arm.
J. Robotics, 2013

Cross-Cultural Perspectives on Emotion Expressive Humanoid Robotic Head: Recognition of Facial Expressions and Symbols.
Int. J. Soc. Robotics, 2013

Generation of humanoid Robot's Facial Expressions for Context-Aware Communication.
Int. J. Humanoid Robotics, 2013

Deciding Schema <i>k</i>-Secrecy for XML Databases.
IEICE Trans. Inf. Syst., 2013

XPath Satisfiability with Parent Axes or Qualifiers Is Tractable under Many of Real-World DTDs.
Proceedings of the 14th International Symposium on Database Programming Languages (DBPL 2013), 2013

Walking stabilization based on gait analysis for biped humanoid robot.
Adv. Robotics, 2013

Hybrid gait pattern generator capable of rapid and dynamically consistent pattern regeneration.
Proceedings of the 10th International Conference on Ubiquitous Robots and Ambient Intelligence, 2013

Emotional gait generation method based on emotion mental model - Preliminary experiment with happiness and sadness.
Proceedings of the 10th International Conference on Ubiquitous Robots and Ambient Intelligence, 2013

Comparison of bipedal humanoid walking with human being using inertial measurement units and force-torque sensors.
Proceedings of the 2013 IEEE/SICE International Symposium on System Integration, 2013

Towards dynamically consistent real-time gait pattern generation for full-size humanoid robots.
Proceedings of the IEEE International Conference on Robotics and Biomimetics, 2013

Perception of emotion and emotional intensity in humanoid robots gait.
Proceedings of the IEEE International Conference on Robotics and Biomimetics, 2013

Human-humanoid robot social interaction: Laughter.
Proceedings of the IEEE International Conference on Robotics and Biomimetics, 2013

Towards culture-specific robot customisation: A study on greeting interaction with Egyptians.
Proceedings of the IEEE International Symposium on Robot and Human Interactive Communication, 2013

Conveying emotion intensity with bio-inspired expressive walking - Experiments with sadness and happiness.
Proceedings of the IEEE International Symposium on Robot and Human Interactive Communication, 2013

Integrating the whole cost-curve of stereo into occupancy grids.
Proceedings of the 2013 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2013

New shank mechanism for humanoid robot mimicking human-like walking in horizontal and frontal plane.
Proceedings of the 2013 IEEE International Conference on Robotics and Automation, 2013

Impression survey of the emotion expression humanoid robot with mental model based dynamic emotions.
Proceedings of the 2013 IEEE International Conference on Robotics and Automation, 2013

Shoes-wearable foot mechanism mimicking characteristics of human's foot arch and skin.
Proceedings of the 2013 IEEE International Conference on Robotics and Automation, 2013

Reaching for the unreachable: integration of locomotion and whole-body movements for extended visually guided reaching.
Proceedings of the 13th IEEE-RAS International Conference on Humanoid Robots, 2013

Improving the human-robot interaction through emotive movements: a special case: walking.
Proceedings of the ACM/IEEE International Conference on Human-Robot Interaction, 2013

The influences of emotional intensity for happiness and sadness on walking.
Proceedings of the 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2013

2012
Decidability of the Security against Inference Attacks Using a Functional Dependency on XML Databases.
IEICE Trans. Inf. Syst., 2012

XPath satisfiability with downward and sibling axes is tractable under most of real-world DTDs.
Proceedings of the Twelfth International Workshop on Web Information and Data Management, 2012

A Cross-Cultural Study on Generation of Culture Dependent Facial Expressions of Humanoid Social Robot.
Proceedings of the Social Robotics - 4th International Conference, 2012

Head stabilization based on a feedback error learning in a humanoid robot.
Proceedings of the 21st IEEE International Symposium on Robot and Human Interactive Communication, 2012

A robotic implementation of a bio-inspired head motion stabilization model on a humanoid platform.
Proceedings of the 2012 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2012

Development of expressive robotic head for bipedal humanoid robot.
Proceedings of the 2012 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2012

Realization of biped walking on soft ground with stabilization control based on gait analysis.
Proceedings of the 2012 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2012

Biped walking stabilization based on gait analysis.
Proceedings of the IEEE International Conference on Robotics and Automation, 2012

Development of facial expressions generator for emotion expressive humanoid robot.
Proceedings of the 12th IEEE-RAS International Conference on Humanoid Robots (Humanoids 2012), Osaka, Japan, November 29, 2012

2011
Disturbance Compensation Control for a Biped Vehicle.
Adv. Robotics, 2011

The inevitability of the bio-molecules: five nitrogenous bases and twenty amino acids.
Artif. Life Robotics, 2011

Learning task space control through goal directed exploration.
Proceedings of the 2011 IEEE International Conference on Robotics and Biomimetics, 2011

Stretched knee walking with novel inverse kinematics for humanoid robots.
Proceedings of the 2011 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2011

Realization of quick turn of biped humanoid robot by using slipping motion with both feet.
Proceedings of the IEEE International Conference on Robotics and Automation, 2011

A method for the calculation of the effective Center of Mass of humanoid robots.
Proceedings of the 11th IEEE-RAS International Conference on Humanoid Robots (Humanoids 2011), 2011

Validity of Positive XPath Queries with Wildcard in the Presence of DTDs.
Proceedings of the Database Programming Languages, 2011

2010
Radiosynthesis and biological evaluation of carbon-11-labeled N-((S)-1-((S)-1-methylpiperidin-2-yl)ethyl)acetamide derivatives as a potential radioligands for glycine transporter 1.
NeuroImage, 2010

Specific metabolites in the medial prefrontal cortex are associated with the neurocognitive deficits in schizophrenia: A preliminary study.
NeuroImage, 2010

PET studies in conscious monkeys of carbon-11-labeled N-((S)-1-((S)-1-methylpiperidin-2-yl)ethyl)acetamide derivatives as a potential radioligands for glycine transporter 1.
NeuroImage, 2010

Integration of emotion expression and visual tracking locomotion based on Vestibulo-Ocular Reflex.
Proceedings of the 19th IEEE International Conference on Robot and Human Interactive Communication, 2010

Using GPUs to improve system performance in visual servo systems.
Proceedings of the 2010 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2010

Real-time virtual haptization of an object surface measured by a high-speed projector-camera system.
Proceedings of the 2010 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2010

A study of function of foot's medial longitudinal arch using biped humanoid robot.
Proceedings of the 2010 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2010

Realization of biped walking on uneven terrain by new foot mechanism capable of detecting ground surface.
Proceedings of the IEEE International Conference on Robotics and Automation, 2010

Avoidance behavior from external forces for biped vehicle.
Proceedings of the IEEE International Conference on Robotics and Automation, 2010

2009
Verification of the Security against Inference Attacks on XML Databases.
IEICE Trans. Inf. Syst., 2009

Terrain-adaptive control with small landing impact force for biped vehicle.
Proceedings of the 2009 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2009

A Tractable Subclass of DTDs for XPath Satisfiability with Sibling Axes.
Proceedings of the Database Programming Languages, 2009

2008
Biped Landing Pattern Modification Method and Walking Experiments in Outdoor Environment.
J. Robotics Mechatronics, 2008

Swizzle Movement for Biped Walking Robot Having Passive Wheels.
J. Robotics Mechatronics, 2008

2007
Experimental Stiffness Measurement of WL-16RII Biped Walking Vehicle During Walking Operation.
J. Robotics Mechatronics, 2007

Optimization Design of a Stewart Platform Type Leg Mechanism for Biped Walking Vehicle.
Proceedings of the Robotics Research - The 13th International Symposium, 2007

Unknown disturbance compensation control for a biped walking vehicle.
Proceedings of the 2007 IEEE/RSJ International Conference on Intelligent Robots and Systems, October 29, 2007

Development of a Biped Locomotor with the Double Stage Linear Actuator.
Proceedings of the 2007 IEEE International Conference on Robotics and Automation, 2007

New Foot System Adaptable to Convex and Concave Surface.
Proceedings of the 2007 IEEE International Conference on Robotics and Automation, 2007

2006
New Biped Foot System Adaptable to Uneven Terrain.
J. Robotics Mechatronics, 2006

Walking Pattern Generation of a Biped Walking Vehicle Using a Dynamic Human Model.
Proceedings of the 2006 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2006

Landing Pattern Modification Method with Predictive Attitude and Compliance Control to Deal with Uneven Terrain.
Proceedings of the 2006 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2006

A Fall Avoidance Foot Mechanism for a Biped Locomotor.
Proceedings of the 2006 IEEE International Conference on Robotics and Automation, 2006

Biped Landing Pattern Modification Method with Nonlinear Compliance Control.
Proceedings of the 2006 IEEE International Conference on Robotics and Automation, 2006

2005
Walking up and down stairs carrying a human by a biped locomotor with parallel mechanism.
Proceedings of the 2005 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2005

Development of foot system of biped walking robot capable of maintaining four-point contact.
Proceedings of the 2005 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2005

Walking Control Method of Biped Locomotors on Inclined Plane.
Proceedings of the 2005 IEEE International Conference on Robotics and Automation, 2005

Realization by Biped Leg-wheeled Robot of Biped Walking and Wheel-driven Locomotion.
Proceedings of the 2005 IEEE International Conference on Robotics and Automation, 2005

Schema update operations preserving the expressive power in XML databases.
Proceedings of the 21st International Conference on Data Engineering Workshops, 2005

2004
Support torque reduction mechanism for biped locomotor with parallel mechanism.
Proceedings of the 2004 IEEE/RSJ International Conference on Intelligent Robots and Systems, Sendai, Japan, September 28, 2004

1998
Performance evaluation of word phrase and noun category language models for broadcast news speech recognition.
Proceedings of the 5th International Conference on Spoken Language Processing, Incorporating The 7th Australian International Speech Science and Technology Conference, Sydney Convention Centre, Sydney, Australia, 30th November, 1998


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