Kiyohiko Hattori

Kiyohiko Hattori
The University of Electro-Communications | UEC

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75
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81
Citations

Publications

Publications (75)
Article
Full-text available
In recent years, user cooperative traffic forwarding is a popular study topic and broadly seen as one of the important promising technologies to improve energy efficiency (EE) of battery-driven mobile terminal (MT). However, the battery-driven devices always suffer from a problem of limited working time due to battery life. In this paper, we propos...
Conference Paper
Building evacuation simulation provides us with various knowledge and suggestion before a real disaster happens. To date, however, evacuees were often modeled as homogeneous without individual motivation in a large-scale urban simulation model, which is rather different from real human behavior. In this paper, an evacuation simulation model with hu...
Article
Our recently proposed interference-aware channel segregation based dynamic channel assignment (IACS-DCA) forms a channel reuse pattern with low co-channel interference (CCI) in a distributed manner. It has been shown by numerical computation that IACS-DCA forms a stable channel reuse pattern. In this paper, we provide convergence analysis of IACS-D...
Article
Recently, many extensive studies have been conducted on robot control via self-positioning estimation techniques. In the simultaneous localization and mapping (SLAM) method, which is one approach to self-positioning estimation, robots generally use both autonomous position information from internal sensors and observed information on external landm...
Article
This paper proposes a novel method for deploying a wireless mesh network (WMN) using a group of swarm robots equipped with wireless transceivers. The proposed method uses the rough relative positions of the robots estimated by their Radio Signal Strength Indicators (RSSIs) to deploy the WMN. The employed algorithm consists of three parts, namely, (...
Article
This paper propose a novel deployment method of Wireless Mesh Network (WMN) using a group of mobile robots equipped with a wireless transceiver. Our proposed method utilize rough relative positions of the robots estimated by Radio Signal Strength Indicators (RSSI) to deploy WMN. Our algorithm is consist of following two parts; (1) Fully distributed...
Article
To optimize the problem composed of (i) the common components which should be optimized from the viewpoint of all objective functions and (ii) the special components which should be optimized from the viewpoint of one of the objective functions, this paper proposes a new multi-objective optimization method which optimizes not only the common compon...
Article
This paper proposes the evolutionary algorithm (EA) for the uncertain evaluation function in which fitness values change even with the same input. In detail, the proposed method employs the probability model to acquire the appropriate attributes that can drive the good solutions. To investigate the effectiveness of the proposed method, we apply it...
Article
In this paper, we propose an autonomous control method for the movement of distributed nodes in a mobile wireless mesh network. Our approach estimates the mutual position of nodes from the received signal strength indicator (RSSI), and constructs a network using a number of autonomous moving nodes to enable wireless communication. The proposed meth...
Article
In order to quickly reconstruct a wireless communications network destroyed by a disaster, we propose a resilient mobile-mesh-network deployment algorithm to autonomously build a mobile mesh network in a desired area by focusing on wireless base stations with autonomous mobile function. Our proposed method is an adaptive network deployment algorith...
Conference Paper
This paper focuses on cooperation among autonomous rescue agents in dynamic disaster environments, proposes Multiagent-based Artificial Bee Colony (M-ABC) algorithm by improving ABC algorithm without using global information (i.e., local information only), and investigates its effectiveness from the viewpoint of finding victim quickly and efficient...
Article
This paper proposes Multiagent-based Artificial Bee Colony (M-ABC) algorithm by improving ABC al-gorithm for dynamical environments without using global information (i.e., local information only), and investigates its effectiveness on cooperation among rescue agents in dynamic disaster environments, which requires to quickly and efficiently find vi...
Article
We propose a novel algorithm for making dynamic ad-hoc networks using a large number of autonomous small robots, and verified the effectiveness of the proposed algorithm through simulations and actual environment. The algorithm uses only direct communications and their RSSI to repel other robots unlike previous methods using additional sensors. We...
Article
Many researchers focus on robot controlling using self-position estimation. One of the ideas of self-positioning estimation is called SLAM, and this approach could improve accuracy of estimation position with a large number of landmarks; on the other hand, it has a problem of computational complexity increasing exponentially. Dealing with this prob...
Conference Paper
Unlike a synchronous program evolution in the context of evolutionary computation that evolves individuals (i.e., programs) after evaluations of all individuals in each generation, this paper focuses on an asynchronous program evolution that evolves individuals during evaluations of each individual. To tackle this problem, we explore the mechanism...
Conference Paper
Recently, there has been extensive research on robot control using self-position estimation. Simultaneous Localization And Mapping (SLAM) is one approach to self-positioning estimation. In SLAM, robots use both autonomous position information from internal sensors and data from external landmarks. SLAM can improve the accuracy of position estimatio...
Article
Recently, many studies have been conducted on robot positioning using self-localization method without GPS. One of the efficient methods is called SLAM, Simultaneous Localization And Mapping. This method can estimate robot position with high accuracy by using both internal sensors such as gyro sensor, rotary encoder, and external sensors such as ca...
Conference Paper
This paper proposes the interactive system that can help humans to understand the trade-off relationship of Pareto optimal solutions (e.g., good products from a certain aspect) in multi-dimensional space. For this purpose, the following two methods are proposed from the viewpoint of the number of evaluation criteria which should be considered by a...
Article
抄録 The paper proposes a novel recommender system which supports users to clarify the most appropriate preference by recommending other categories' items that almost meet the attributes selected by users. Such an advantage is achieved by both the preference ncretization of users and the preference change of users.To investigate the effectiveness of...
Article
This paper focuses on the distributed control of the multiple robots which may be broken and investigates how the robots complete their task by collecting broken robots through the simulation of the large-scale structure assembly. For this purpose, we conduct multiagent simulation for collecting broken robots under the different failure rate of rob...
Article
This paper focuses on distinctive changes of not only the heart rate but also the body movement in REM stage (i.e., light sleep) and Non-REM stage (i.e., deep sleep) and improves our sleep estimation method by employing the feature of such distinctive changes. In particular, the heart rate increases irregularly in REM stage, while the heart rate de...
Article
This paper extends the demand priority-based Genetic Algorithm (namely the demand pri-GA) by employing the cluster-first-route-second method to generate the effective feeder route network consisted of the hub-spoke and loop type networks. For this purpose, we propose the feeder route network optimization method which integrates the demand pri-GA wi...
Conference Paper
This paper evaluates a navigation method of mobility using two autonomous rovers. Our rover system is proposed to apply a JAXA SLIM project, Smart Lander for Investigating Moon. In the SLIM project, the role of rovers is autonomously exploring the target called Marius Hills Hole, which is supposed to exist about 300m away from landing point. To tac...
Conference Paper
when gathering the disaster information at the time of the occurrence of a massive earthquake, we are examining using autonomous robots. This research focuses on the position estimation and mapping technique that are important for autonomous robots to search sufferers, and gathering information. To tackle this issue, we propose a new concept of pos...
Article
This paper proposes a distributed and self-organized method which has the mechanisms of robustness sensor data collection and fault diagnosis for large-scale sensor networks. To cope with complex sensor networks which include (i) an ad-hoc multi-hop communication, (ii) data aggregation, and (iii) high error data rate caused by the a huge number of...
Conference Paper
This paper focuses on distinctive changes of not only the heart rate but also the body movement in REM stage (i.e, light sleep) and Non-REM stage (i.e, deep sleep) and improves our sleep estimation method by employing the feature of such distinctive changes. In particular, the heart rate increases irregularly in REM stage, while the heart rate decr...
Article
This paper explores the multi-objective evolutionary algorithm that can effectively solve a multi-objective problem where an importance of the objective differs each other unlike the conventional problem which concerns each objective evenly. Since such a type of a problem is often found in industrial problems (e.g., logistics network), we propose t...
Conference Paper
This paper focuses on the distributed control of the multiple robots which may be broken and investigates how the robots complete their task by collecting broken robots through the large-scale structure assembly. For this purpose, we conduct simulations of our proposed deadlock avoidance method with collecting broken robots under the different fail...
Conference Paper
This research evaluates a recognition performance of the edge of deep, when searching the hole on the moon's surface using micro rover of two bodies. In order to search a target hole by micro rover, it moves by autonomy, and the rover itself needs to automatic-recognize the edge of deep hole, and it needs to stop without the control from the earth....
Conference Paper
This paper evaluates a straight advancement mobility using two autonomous rovers. Our rover system is considered application in a JAXA SLIM project, Smart Lander for Investigating Moon. In the SLIM project, the roll of the rovers is autonomously exploring the target called Marius Hills Hole, which exists 300m ahead from landing point. To tackle thi...
Article
This paper focuses on an on-board computer (OBC) that evolves computer programs through bit inversion and targets analyzing robustness against bit inversion in registers. We also propose a new method that can change the number of computer programs dynamically. Intensive experiments revealed the following: (1) Correct programs can be maintained even...
Article
This paper focuses on the distributed control of multiple robots that may be broken and investigates recovery capability, which means how robots can complete assembly, when some are broken, through the assembly of a different-scale solar-powered satellite. We thus conduct simulation at different failure rates of robots that use our proposed deadloc...
Conference Paper
This paper focuses on developing human negotiation skills through interactions between a human player and a computer agent, and explores its strategic method towards a human skill improvement in enterprise. For this purpose, we investigate the negotiation skill development through bargaining game played by the player and an agent. Since the acquire...
Conference Paper
When exploring the planet surfaces such as the Moon or Mars by a rover, it is very important for a rover to move toward the target direction accurately. With the small-sized satellite mission which is recently paid attention, operating time of rover is restricted by both the capacity of electric power and the problem of heat radiation due to its we...
Article
This paper explores the collective adaptive agent that adapts to a group in contrast with the individual adaptive agent that adapts to a single user. For this purpose, this paper starts by defining the collective adaptive situation through an analysis of the subject experiments in the playing card game, Barnga, and investigates the factors that lea...
Conference Paper
This paper introduces the smartphone based intelligent compact rover which was developed for the competition called ARLISS (A Rocket Launch for International Student Satellites). The rover makes decisions by the information from their sensor, and move to given goal point. In particular, we focus on detection of ruts, reconnection of Bluetooth and t...
Conference Paper
This paper considers the moon surface experiment which used cooperation of two sets of micro rovers. Two sets of micro rover get mutual spatial relationship using a two-dimensional marker. After acquiring spatial relationship, the parent rover sends direction command to the child rover so that it may move in the direction of a target. Experimental...
Article
This paper focuses on developing human skills through interaction between a human player and a computer agent, and explores its strategic method through experiments on the bargaining games where human players negotiate with computer agents. Specifically, human players negotiate with three types of agents: (a) strong/weak attitude agents making aggr...
Article
Full-text available
Two-dimensional (2D) communication is a novel physical communication form that utilizes the surface as a communication medium to provide both data and power transmission service to the sensor devices placed on the surface's top. In previous works, we developed 2D communication systems that utilize separated channels for data and power transmission....
Conference Paper
This paper investigates the effectiveness of our proposed OBC (On-Board Computer) loaded in UNITEC-1, which is developed by the several Japanese universities and will be launched to Venus as the piggyback of the JAXA's satellite named "AKATSUKI" (Planet-C) in 2010. Unlike the conventional approaches that employ the shielded devices, multiplex logic...
Conference Paper
This research focuses on the effect of education difference on the symbol acquisition for the artifacts, and develops the communication model that a human teaches the symbols to the artifacts, who do not have the pre-defined words. As the first milestone of our approach, this paper investigates the two kinds of the communication model, (a) the educ...
Conference Paper
This research focuses on the effect of education difference on the symbol acquisition for the artifacts, and develops the communication model that a human teaches the symbols to the artifacts, who do not have the pre-defined words. As the first milestone of our approach, this paper investigates the two kinds of the communication model, (a) the educ...
Conference Paper
This paper proposes the hybrid Indicator-based Directionalbiased Evolutionary Algorithm (hIDEA) and verifies its effectiveness through the simulations of the multi-objective 0/1 knapsack problem. Although the conventional Multi-objective Optimization Evolutionary Algorithms (MOEAs) regard the weights of all objective functions as equally, hIDEA bia...
Conference Paper
This paper focuses on care plans of aged persons in care houses and addresses the trade-off relationship between care plans for efficient workloads of care workers and those for different lifestyle of aged persons. To tackle this issue, this paper proposes Indicator-based Directional-biased Evolutionary Algorithm (IDEA). Through intensive simulatio...
Conference Paper
This paper proposes the extended version of Exemplar-based Learning Classifier System (ECS) called DMR-ECS which introduces the basis function for the dynamic matching selection in ECS. In comparison with our previous match selection in ECS, the proposed dynamic match selection in DMR-ECS can control an appropriate range of the match selection auto...
Article
This paper proposes the sleep stage estimation method that can provide an accurate estimation for each person without connecting any devices to human's body. In particular, our method learns the appropriate multiple band-pass filters to extract the specific wave pattern of heartbeat, which is required to estimate the sleep stage. For an accurate es...
Conference Paper
This paper improves an accuracy rate of the sleep stage estimation towards the care support information system for aged persons. In particular, our proposed method learns the appropriate multiple band-pass filters that extract the specific wave pattern of heartbeat to estimate the sleep stage. Through the intensive human subject experiments, the fo...
Article
This paper investigates how to design the limit of failure rate and the adjust number of robots in the distribution control of the multiple robots which may be broken through the simulation of space solar power satellite assembly. For this purpose, we conduct simulations with changing the failure rate of robots that employ our proposed deadlock avo...
Article
A lot of indoor measurement methods that can be used in the indoor space where the GPS system cannot be used are proposed. However, there methods have a lot of issue at the view point of the cost and the positional estimation accuracy. Additionally, there methods cannot take a direction which is important information for the location depend service...
Conference Paper
This paper focuses on an autonomy of computer agents and explores its architecture that can generate its objective by itself without being provided by humans. For this purpose, we propose the agent architecture that has the auto-associate memory as the internal factor and the resource limitation as the external factor for generating the objectives...
Article
This paper investigates the effectiveness of our proposed deadlock avoidance method through the space solar power satellite assembling simulation which is extended into the real-valued environment. For this purpose, we conduct the simulations in following three cases: (i) the discrete environment where the movement of each robot is based on the sam...
Article
Recently, the service of cellular phone which is dependent on the location is spreading widely. Various techniques are suggested for the location estimation in indoor, however, indoor location estimation techniques have many subjects with a cost and an aspect of the accuracy. To deal with these subjects, we propose a quite new hybrid indoor locatio...
Conference Paper
This paper explores the collective adaptive agent that adapts to agroup in contrast with the individual adaptive agent that adapts to a single user. For this purpose, this paper starts by defining the collective adaptive situation through an analysis of the subject experiments in the playing card game, Barnga, and investigates the factors that lead...
Conference Paper
This paper extends Exemplar-based Learning Classifier System (ECS) by introducing the basis function for dynamic generalization of exemplars. In comparison with the previous our match selection, the proposal dynamic match selection is enable to (1) extract exemplars that cover each space of problem, and (2) control appropriate range of the match se...
Article
This paper focuses on the generalization of exemplars (i.e., good rules) in the reinforcement learning framework and proposes Exemplar Generalization in Reinforcement Learning (EGRL) that extracts usual exemplars from a lot of exemplars provided as a prior knowledge and generalizes them by deleting unnecessary exemplars (some exemplars overlap) as...
Conference Paper
Tierra-based space CPU has a novel architecture which evolves computer programs through the bit inversion of the instructions as a mutation. This paper investigates the effectiveness of Tierra-based space CPU through the bit inversion of the registers in addition to the instructions in order to consider the more realistic situation. Intensive simul...
Conference Paper
This paper proposes the sleep stage estimation method that can provide more accurate estimation than the conventional method and is robust to bad condition of humans without connecting any devices to human's body. Our proposed method can extract the specific wave pattern required to estimate the sleep stage from heart beat data. Through the intensi...
Article
This paper proposes the optimization method which extends Pittsburg-style Learning Classifier System (LCS) for Pacific Ocean route. In detail, the following extensions are introduced: (1) the unrealistic route deletion, (2) the route integration, and (3) the route rest time minimization and the anchor order change. To investigate the effectiveness...
Article
The positional estimate system which is represented in GPS is applied from the convenience to various fields, and to be used as a navigation system for pedestrians in recent years. However, GPS has a weak point that it is not possible to use in indoors such as underground stations, buildings, etc. This is because GPS needs a radio wave from GPS spa...
Article
This paper explores the agent model that call learn symbols including an adjective in addition to a noun for advanced communication and investigates the relationship between the symbol understanding and the embodiment of an agent. Intensive simulations result on the naming game has revealed the following implications: (1) the effectiveness of using...
Article
In this paper, we propose a robustness data collection and fault detection method for large-scale sensor networks, which consist of ten thousand sensor nodes. The sensor network has some special features as multihop communication, data aggregation, and high error data rate caused by the huge number of nodes. To tackle this issue, we propose a distr...
Article
Full-text available
Wireless mesh networks (WMNs) are gaining significant momentum as a promising technology for the next-coming state-of-the-art wireless networking. Among many factors, the performance of WMNs would be largely affected by the properness of the deployed routing protocols and the efficient usage of wireless resources. Routing protocols are required to...
Article
This paper proposes a new method that can diagnose nodes which consist of a large scale structure system including intermitted fault and analyzes its capability through simulations for comparisons between our method and Adaptive DSD, one of on-line distributed diagnosis methods. Our method based on ideas of a disconnecter and token node. The discon...
Article
This paper analyzes the capabilities of two methods that specify a failure area in a large-scale space structure: (1) the adjoining module decision (AMD) method proposed by our previous research; and (2) a Byzantine-based decision (BBD) method which is a general method in the context of a distributed processing approach. In this paper, we investiga...
Article
River systems are expected to have a great potential to transport cargoes especially under disaster conditions. In Hanshin Earthquake disaster occurred in 1995, ship transport of relief goods by rivers worked effectively. Furthermore the alternative routes other than transportation on land under disaster circumstances are required strongly. The shi...
Article
This paper proposes the method for speeding up the assembling of the large-scale structure by distributing the multiple robots over the large-scale structure uniformly . For this purpose, this method introduces the following two functions: (i) the destination map which estimates how the robots are distributed on the large-scale structure; and (ii)...
Article
Full-text available
A space solar power satellite (SSPS) has some difficult problems which other type of satellite does not have. One of problems is difficulty of fault diagnosis. SSPS is a huge satellite; therefore it is hard to specify a failure area when failure occurres. To address this issue, we proposed three methods[1] (i.e. self-module decision method, adjoini...

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