Faculty Profiles - OGAWA Kohei

Alignment of the attitude of teleoperators with that of a semi-autonomous android Reviewed

Other Link： https://link.springer.com/article/10.1007/s12369-022-00907-9/fulltext.html

Tomonori Kubota, Kohei Ogawa, Yuichiro Yoshikawa, Hiroshi Ishiguro

Scientific Reports Vol. 12 ( 1 ) 2022.6

Publishing type：Research paper (scientific journal) Publisher：Springer Science and Business Media LLC

Abstract

Studies on social robots that can communicate with humans are increasingly important. In particular, semi-aautonomous robots have shown potential for practical applications in which robot autonomy and human teleoperation are jointly used to accomplish difficult tasks. However, it is unknown how the attitude represented in the autonomous behavior of the robots affects teleoperators. Previous studies reported that when humans play a particular role, their attitudes align with that role. The teleoperators of semi-autonomous robots also play the role given to the robots and may assimilate their autonomous expression. We hypothesized that the attitude of teleoperators may align with that of robots through teleoperation. To verify this, we conducted an experiment with conditions under which a participant operated a part of the body of an android robot that autonomously expressed a preferential attitude toward a painting and a condition under which they did not. Experimental results demonstrated that the preferential attitude of participants who teleoperated the android aligned statistically significantly more with that of the robot in comparison to those who did not teleoperate it, thereby supporting our hypothesis. This finding is novel regarding attitude change in teleoperators of semi-autonomous robots and can support the implementation of effective human-robot collaboration systems.

DOI： 10.1038/s41598-022-13829-3

Identifying Personality Dimensions for Engineering Robot Personalities in Significant Quantities with Small User Groups Reviewed

Other Link： https://www.nature.com/articles/s41598-022-13829-3

Liangyi Luo, Kohei Ogawa, Hiroshi Ishiguro

Robotics Vol. 11 ( 1 ) page： 28 - 28 2022.2

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：MDPI AG

Future service robots mass-produced for practical applications may benefit from having personalities. To engineer robot personalities in significant quantities for practical applications, we need first to identify the personality dimensions on which personality traits can be effectively optimised by minimising the distances between engineering targets and the corresponding robots under construction, since not all personality dimensions are applicable and equally prominent. Whether optimisation is possible on a personality dimension depends on how specific users consider the personalities of a type of robot, especially whether they can provide effective feedback to guide the optimisation of certain traits on a personality dimension. The dimensions may vary from user group to user group since not all people consider a type of trait to be relevant to a type of robot, which our results corroborate. Therefore, we had proposed a test procedure as an engineering tool to identify, with the help of a user group, personality dimensions for engineering robot personalities out of a type of robot knowing its typical usage. It applies to robots that can imitate human behaviour and small user groups with at least eight people. We confirmed its effectiveness in limited-scope tests.

DOI： 10.3390/robotics11010028

Development of simultaneous summarizing technology of multiple sites context for multiple agent tele-operation system

KAWASAKI Kazuyoshi, OGAWA Kohei

Proceedings of the Annual Conference of JSAI Vol. JSAI2022 ( 0 ) page： 2F1GS904 - 2F1GS904 2022

Language：Japanese Publisher：The Japanese Society for Artificial Intelligence

When an operator teleoperates with semi-autonomous conversational robots simultaneously installed at multiple locations, the operator needs to quickly understand the context of the situation to change the operating robot. Therefore, clarifying suitable summarization methods for each typical situation for the use-case of multiple conversational robots provides sufficient conversational services. In this paper, we proposed a summarization method for each situation and researched if operators can understand the context more quickly by the proposed method than the standard method. Firstly, we categorized conversation situations by task-orientation of possible use-case in conversational robots, and then we focused on the "taking out of food" and "chitchat" as a task-oriented and non-task-oriented conversational situation. Finally, we researched the suited summarization method by comparing the proposed method and the common one. As a result, we found that the proposed method suits for focused conversational situations to understand the contents of a conversation.

DOI： 10.11517/pjsai.jsai2022.0_2f1gs904

Report of the Case of Constructing Dialogue Design Patterns for Agent System Based on the Standard Dialogue Structure Reviewed

Yoshimi Tominaga, Hideki Tanaka, Hitoshi Matsubara, Hiroshi Ishiguro, Kohei Ogawa

Transactions of the Japanese Society for Artificial Intelligence Vol. 36 ( 5 ) page： AG21 - F_1 2021.9

Authorship：Last author,　Corresponding author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japanese Society for Artificial Intelligence

To design a dialogue well and easily implement it into an agent dialogue system, we constructed and verified typical dialogue patterns as “ Dialogue Design Patterns ”. To analyze the dialogues, we defined the “ Standard Dialogue Structure ”that represents simple components of dialogues. This is constructed using the“ Turn ”that is one turn-taking between the dialogue participants, the“ Topic ”that is a series of Turns in which a single question is resolved, the“Topic-shift”that is short interaction in which a consensus is built before moving to the next Topic, and the“ Scene ”that puts together each component. We investigated the frequent patterns of dialogue in the Topic. We analyzed the content of each Turn’s utterances on two axes:“convey-receive”and“logical-emotional”. These Turns were labeled on a four-quadrant impression as“ teach ”(logical convey),“ empathy ”(emotional convey),“ survey ” (logical receive), and“ listen ”(emotional receive). We analyzed the frequency of appearance for these labels in the Turns for each Topic using frequent pattern analysis, and we found several typical patterns that order these labels. We named these the patterns and determined their tendency scores. The tendencies of these patterns were categorized into“ information amount ”,“ cooperation ”, and“ balance ”. Finally, we implemented a dialogue scenario created using the Standard Dialogue Structures and Dialogue Design Patterns in our system. In the feasibility study with local government employees, the achievement rate of agent dialogue was more than 50%, and it higher than our previous system. This shows that dialogues based on Dialogue Design Patterns can facilitate agent dialogue. In conclusion, we showed that applying the Standard Dialogue Structure and Dialogue Design Patterns to dialogues in a human-agent dialogue system is a practical and possible way of easily implementing effective dialogues that facilitate interaction even for novices in dialogue design.

DOI： 10.1527/tjsai.36-5_ag21-f

Android Kannon: Transmission with a metaphysical content by a media integrating an android and projection mapping Reviewed

Taniguchi Dai, Ogawa Kohei, Isobe Yumi, Goto Tensho, Ishiguro Hiroshi

Transactions of the Virtual Reality Society of Japan Vol. 26 ( 4 ) page： 288 - 297 2021.9

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：THE VIRTUAL REALITY SOCIETY OF JAPAN

With the development of engineering technology, many attempts have been made to persuade humans using engineering technology. Research on persuasion toward physical purposes using engineering technology has been conducted. For example, about changing attitudes toward purchasing products. On the other hand, for persuasion toward metaphysical purposes such as understanding abstract concepts and religious ideas, no methodology for using engineering technology has been established. This research aimed to realize persuasion toward metaphysical purposes. We focused on persuasion on the peripheral route in the elaboration likelihood model, and targeted transmission of Buddhist Doctrine as a metaphysical content. In order to achieve this, we have developed the media integrating an android and projection mapping. We discussed the relationship between the conventional media for transmission of Buddhist Doctrine and the developed system, and conducted the field experiment to verify the effectiveness of the developed system. As a result of the analysis, it was shown that the developed system could be effective for the transmission of Buddhist Doctrine. In the future, we plan to verify the effectiveness of the developed system outside of the transmission of Buddhism, and the synergistic effects that occur only by integrating an android and projection mapping in laboratory experiments.

DOI： 10.18974/tvrsj.26.4_288

Active Participation in Lectures via a Collaboratively Controlled Robot

Jiro Shimaya, Yuichiro Yoshikawa, Oskar Palinko, Kohei Ogawa, Nobuhiro Jinnai, Hiroshi Ishiguro

International Journal of Social Robotics Vol. 13 ( 4 ) page： 587 - 598 2021.7

Language：English Publishing type：Research paper (scientific journal) Publisher：Springer Science and Business Media B.V.

Information technology, including digital devices, robots, and the internet, is of great interest in the field of education. Many previous studies have focused on improving lecturer–student communication during lectures. In this paper, we describe a new robot-teleoperation system for transferring students’ opinions or questions to the lecturer. Through this system, users can collaboratively choose a message to be uttered by a robot. We report the results of a subjective experiment performed in a controlled lecture-style environment. The results show that participation, as estimated from behavioral and subjective measures, increased in lectures using the proposed system compared with those that did not use the proposed system or employed a reduced version of the proposed system in which the robot was controlled individually (i.e., non-collaboratively).

DOI： 10.1007/s12369-020-00651-y

Using Multiple Robots to Increase Suggestion Persuasiveness in Public Space Reviewed

Marcos Inky Tae, Kohei Ogawa, Yuichiro Yoshikawa, Hiroshi Ishiguro

Applied Sciences Vol. 11 ( 13 ) page： 6080 - 6080 2021.6

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：MDPI AG

Though existing social robots can already be used in a variety of applications, there are technical limitations to their use, especially outside the laboratory, and humans do not fully trust or recognize them. Considering these problems, a method to make humans accept a robot’s suggestion more easily was investigated. An idea called “sequential persuasion” was developed to use multiple robots distant from each other to deliver small messages, rather than a single robot for the entire interaction. To experimentally validate this concept, a field experiment was performed on a university campus. Two bottles of hand sanitizer were placed in one of the entrances to a building, and their usage was observed under three different conditions: no robot, one robot, and three robots. As people passed through the entrance corridor, the robots promoted the usage of the hand sanitizers. After several days of testing, it was found that the usage increased progressively from no robot to one robot to three robots, indicating that the number of robots influenced the behavior of the humans.

DOI： 10.3390/app11136080

Robotic question support system to reduce hesitation for face‐to‐face questions in lectures Reviewed

Jiro Shimaya, Yuichiro Yoshikawa, Kohei Ogawa, Hiroshi Ishiguro

Journal of Computer Assisted Learning Vol. 37 ( 3 ) page： 621 - 631 2021.6

Development and Effectiveness Evaluation of Interactive Voice HMI System Reviewed

Chiharu KATAOKA, Osamu KUKIMOTO, Yuichiro YOSHIKAWA, Kohei OGAWA, Hiroshi ISHIGURO

IEICE Transactions on Information and Systems Vol. E104.D ( 4 ) page： 500 - 507 2021.4

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Institute of Electronics, Information and Communications Engineers (IEICE)

Connected services have been under development in the automotive industry. Meanwhile, the volume of predictive notifications that utilize travel-related data is increasing, and there are concerns that drivers cannot process such an amount of information or do not accept and follow such predictive instructions straightforwardly because the information provided is predicted. In this work, an interactive voice system using two agents is proposed to realize notifications that can easily be accepted by drivers and enhance the reliability of the system by adding contextual information. An experiment was performed using a driving simulator to compare the following three forms of notifications: (1) notification with no contextual information, (2) notification with contextual information using one agent, and (3) notification with contextual information using two agents. The notification content was limited to probable near-miss incidents. The results of the experiment indicate that the driver may decelerate more with the one- and two-agent notification methods than with the conventional notification method. The degree of deceleration depended the number of times the notification was provided and whether there were cars parked on the streets.

DOI： 10.1587/transinf.2020edp7068

What It is Like When Your Colleague is a Philosopher

Standard Dialogue Structure and Frequent Patterns in the Agent Dialogue System Reviewed

Yoshimi Tominaga, Hideki Tanaka, Hiroshi Ishiguro, Kohei Ogawa

Distributed, Ambient and Pervasive Interactions Vol. 12782 LNCS page： 348 - 360 2021

Koyama Tora, Minato Takashi, Ogawa Kohei, Yoshikawa Yuichiro

Journal of the Robotics Society of Japan Vol. 39 ( 1 ) page： 39 - 44 2021

Standard Dialogue Structure and Frequent Patterns in the Agent Dialogue System Reviewed

Yoshimi Tominaga, Hideki Tanaka, Hiroshi Ishiguro, Kohei Ogawa

Distributed, Ambient and Pervasive Interactions 2021 page： 348 - 360 2021

Promoting Student Utterances Using a Robot Assisted Questioning System: Field Experiment in a Lecture for High-School and University Students Reviewed

Shimaya Jiro, Palinko Oskar, Yoshikawa Yuichiro, Jinnai Nobuhiro, Ogawa Kohei, Ishiguro Hiroshi

The Transactions of Human Interface Society Vol. 22 ( 4 ) page： 369 - 380 2020.11

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Human Interface Society

During classroom-type lectures, some students feel difficulty in asking questions, although it is considered to improve the lecture quality and students’ understanding. We propose a system called Robot-Assisted Questioning System (RAQS) that can promote teacher-student communication in the lecture. It allows students to post questions and opinions on an online messaging interface. The messages were sent to a robot to be posed to the teacher, with or without the voting procedure. In this paper, we report a case study of the field experiment in a lecture which was assisted by RAQS. Students found RAQS efficient and useful for improving their communication with the teacher. For the practical use, the results suggest a future improvement of the system to add the function for controlling the number of robot utterance to avoid interference with the teaching process.

DOI： 10.11184/his.22.4_369