ゼミナール発表

日時: 11月30日(月)3限 (13:30-15:00)


会場: L1

司会: 諏訪 博彦
平尾 俊貴 1551085: M, 1回目発表 ソフトウェア工学
title:An Empirical Study of Code Review Decision-making based on the Reviewer’s Voting Correctness abstract:Software development projects often use a code review system such as Gerrit and ReviewBoard code review. In such projects, many patches are submitted on a daily basis. Several general reviewers verify the patches and try to reach a consensus through discussion. Finally, core reviewers make a final decision about integrating the patches. However, the discussions needed to make a final decision make time and are costly to conduct. In addition, the validated conclusion by general reviewers is not be always correct. For example, our previous research identified more than approximately 40% of code reviews that had a different outcome than appeared in reviewer’s choices (approval of patch set or not). Thus, understanding those discussion by general reviewers might be difficult for core reviewers. In this paper, to understand the final decision to integrate a patch set or not, we study how the core reviewer reaches a decision from the discussions of general reviewers. We have propose a case study to measure the correctness of the general reviewers’ voting which the core reviewer use in making a decision. From this study, we found that a vote with higher correctness score leads making a final- decision. Also, in a disagreement patch among reviewers, core reviewers are likely to wait a next vote. Furthermore, we suggest when a core reviewer make a final-decision to integrate or not the patch set into a version control system based on the reviewers’ votes and correctness. language of the presentation:Japanese
 
高 尚昊 1551042: M, 1回目発表 インターネット工学
title:Consideration of OpenFlow for effective bandwidth utilization and improvement quality of experience
abstract:A large capacity of traffic and an increase of users can cause a drain problem on network resources. In this presentation, I will introduce a previous study which discusses this problem from both the perspective of the network manager and the users. I consider using OpenFlow for an effective bandwidth utilization and to improve the quality of experience. Finally, I will describe the intended direction of my research.
language of the presentation: Japanese
 
KONAN N'DJABLI CEDRIC ANGE 1551126: M, 1回目発表 ユビキタスコンピューティングシステム
title: Music2feelings, a music recommendation system based on feelings
abstract: Nowadays, we use music in every different activity of our life. To find the suitable music for each situation we need to use music recommendation systems. Many of those systems exist and they are based on many different context. In our research, we aim to recommend music based on users feelings. In this presentation, we will introduce the related research, our proposal and how we achieved the first part of our research.
language of the presentation: English
 
嶋谷 知 1551051: M, 1回目発表 コンピューティング・アーキテクチャ
title: Accelerating light field video compression using HEVC
abstract: There are cameras which deal with light field image with depth information. However there are no products dealing with the light field video. In order to process the video, it is necessary to compress it. Therefore, we use HEVC which is the latest video compression technology. In this presentation, after introducing HEVC, we introduce our proposal for accelerating light field video compression.
language of the presentation: Japanese
 
TUCHIN ANDREI EUGENIYEVICH 1451210: M, 2回目発表 笠原 正治,藤川 和利,笹部 昌弘

title: “A Simple Algorithm of Centralized Flow Management for Data Centers”


abstract: In this work, we consider a core algorithm for the centralized management of data-center flows. We focus on the arbiter, a centralized controller for scheduling data flows in a data center. We propose a table-driven mechanism for resource reservation, in which states of all the links in a data-center network are registered in a table, and its information is updated at new flow-request arriving points. We evaluate the performance of the proposed algorithm by computer simulation, investigating the bit rate of overall transfered data, the flow-allocation rate, and the link utilization, under different flow-size distributions. Numerical results show that the algorithm can achieve high link utilization without collisions. It is also shown that the proposed algorithm can allocate many flows within a small time interval even when the variance of flow-size is large.


language of the presentation: English

 

会場: L2

司会: 河合 紀彦
伏下 晋 1551090: M, 1回目発表 光メディアインタフェース
title: Analysis of ink characteristic for classifying Japanese ink based on spectrum
abstract: It is important to distinguish different types of Japanese ink for calligraphy - related research field. However, it is difficult to figure out types of Japanese ink using RGB-camera because of similar appearance. The purpose of this research is classifying types of Japanese ink according to spectrum transmittance. In this research, we measure three types of Japanese ink of visible-nir spectrum transmittance. In our observation, we confirmed difference appearance of three types of Japanese ink by visible spectrum transmittance.
language of the presentation: Japanese
発表題目: 分光に基づいた墨分類のための特性解析
発表概要: 墨の種類を見分けることは書画等の研究に役立つと言われている. しか し, 墨は見た目では似た質感を持つため既存のRGBカメラによって種類 を判断するのは難しく, そういった手法も確立されていない. そこで本 研究では分光透過率による墨の分類を目的とする. まず, 3 種類の墨の可 視光-近赤外領域での分光透過率を計測する. これによって, 3 種類の墨の 見た目の違いを分光透過率によって定量的に確認した.
 
森下 睦 1551107: M, 1回目発表 知能コミュニケーション
title: Parser Self-Training for Syntax-Based Machine Translation
abstract: In syntax-based machine translation, it is known that the accuracy of parsing greatly affects the translation accuracy. Self-training, which uses parser output as training data, is one method to improve the parser accuracy. However, because parsing errors cause noisy data to be mixed with the training data, automatically generated parse trees do not always contribute to improving accuracy. We propose a method for selecting self-training data by performing syntax-based machine translation using a variety of parse trees, using automatic evaluation metrics to select which translation is better, and using that translation's parse tree for parser self-training. Our self-trained parsers improve a state-of-the-art translation system in two language pairs.
language of the presentation: Japanese
 
REN HU 1551130: M, 1回目発表 インタラクティブメディア設計学
title: *** A Study on Realistic Rendering of Augmented Reality for Museums ***
abstract: *** The museum is a place for sharing knowledge and information, which is beyond merely displaying artifacts.Currently, it is possible to obtain information while staying at home, including the information from a museum. However, detailed information can not be obtained from the Internet. Some information is only perceptible by appreciating actual exhibits.Exhibitions should engage its viewers with emotional impact (e.g. excitement), and promote the observation and reflection. The exhibition must promote comprehension of a phenomenon beyond the exhibition itself.In some cases, curators cannot present real artifacts.In these situations, curators can use images, panels and posters to complement the exhibition.To evaluate how much state-of-art realistic rendering can improve museum visitors’ interests and comprehension of the exhibit. ***
language of the presentation: *** Japanese ***
 
萩原 康平 1551078: M, 1回目発表 環境知能学
title:In the Passenger Seat: Investigating Ride Comfort Measures in Autonomous Cars
abstract: The prospect of driverless cars wide-scale deployment is imminent owing to the advances in robotics, computational power, communications, and sensor technologies. This promises highway fatality reductions and improvements in traffic and fuel efficiency. Our understanding of the effects arising from commuting in autonomous cars is still limited. The novel concept of the loss of driver controllability is introduced here. It requires a reassessment of vehicleユs comfort criteria. In this review paper, traditional comfort measures are examined and autonomous passenger awareness factors are proposed. We categorize path-planning methods in light of the offered factors. The objective of the review presented in this article is to highlight the gap in path planning from a passenger comfort perspective and propose some research solutions. It is expected that this investigation will generate more research interest and bring innovative solutions into this field.
language of the presentation: Japanese
 
石川 葉子 1551008: M, 1回目発表 知能コミュニケーション
title: Response Generation Based on the Emotional State
abstract: For people can become more familiar with dialog system, it is important to generate response based on system’s emotional state. This research utilizing emotion to add system personality. In OCC theory, emotions are defined by mental states, like intention or desire. By using this theory, we aim to model emotions and to implement dialog system that changed the response based on emotional state.
language of the presentation: Japanese
発表題目: 感情状態に基づく返答文の生成
発表概要: 人と円滑なコミュニケーションを行う親しみやすい対話システムの実現のため、個人性の付与というアプローチが注目されている。本研究では、個人性の表現として感情に注目し、システム自身が生起した感情に基づいた返答文生成を目指す。OCC theoryでは、信念や願望といった心的状態により人間の感情を分類している。この理論を参考に、感情のモデル化と、生起した感情によって返答文を生成する対話システムの構築を目標とする。
 

会場: L3

司会: 爲井 智也
CHEN RONGXIU 1551122: M, 1回目発表 数理情報学

title: *** Mathematical interpretation of neural polarization***

abstract: *** Neurons in a developing stage changes morphology dramatically.
In the first phase, a neuron has circular shape or several protrusions called as neurite. Neurites are similar in length in this phase, nevertheless, one of the neurites elongates longer than others in the following phase. This longest neurite becomes axon and the others become dendrite in future. We call this symmetry breaking process ”neural polarization”, which is important for neurons to decide neurite functions.
The goal of this work is to construct a quantitative mathematical model, and to elucidate the mechanism of neural symmetry breaking by using the mathematical model.

***

Japanese

タイトル: *** 神経極化数理モテル ***

研究概要: *** 発達過程の神経細胞か形態の極性を生み出す。第一段階ては、ニューロンは、神経突起と呼はれるいくつかの円形 のような部分を持っている。神経突起か似ているにもかかわらす、次の段階て、神経突起の一つは、他のものより 長く伸ひる。この最長の神経突起か軸索となり、ほかの突起か、将来的には樹状突起になる。私たちは、この対称 性を壊す神経フロセスを「神経極化」と呼んている。 この対称性破壊の過程は、神経細胞か樹状突起と軸索という突起の機能分離をするために重要てある。 神経細胞か極化する原理を数理モテルて表現することか本研究の目的てある。

***

 
松浦 亮太 1551102: M, 1回目発表 ロボティクス
title: Lifelogging using a human-tracking mobile robot
abstract: In environments where humans and service robots are coexisting, the robot's actions should be comfortable to the user. To provide comfortable robot services, the robot needs to learn the appropriate actions by understanding the human behavior and the semantics of the space from actual human-robot interaction. In this study, we propose a system which collects data using a human-tracking mobile robot and summarizes the human-robot interaction by doing lifelogging.
language of the presentation: Japanese
発表題目: 人追従ロボットによるライフログ収集に関する研究
発表概要: 人共存環境で利用するサービスロボットは,ユーザにとって快適に動作することが重要である.快適なロボットサービスを実現するためには,人とロボットのインタラクションを実際に観察しながら,人の行動や空間に関する意味を理解し適切なインタラクションを習得する必要がある.本研究では,その第一歩として人を追従しながら移動するロボットを用いて様々なデータを収集するシステムを提案し,人とロボットのインタラクションに関するライフログを収集する.
 
堀本 悠司 1551097: M, 1回目発表 生体医用画像
title: Reducing inter-operator variability in semi-automated measurement of femoral anteversion angle
abstract: The accurate measurement of femoral anteversion angle plays an important role in the treatment of the total hip arthroplasty and the femoral fracture. The conventional method sets a femoral neck range and slice the femoral neck range every 1mm and demands a center of gravity position of each slice. Furthermore, each center of gravity position fitting line and the line decides a neck axis. I measure the angle between the neck axis and the table plane, and the angle is anteversion. However, as for the method for measurement, femoral neck range is vague by a gauger. In this study, I give improvement to law conventionally to get rid of the vagueness by the gauger. It is the system which can perform the measurement anteversion angle semiautomatically. This system needs several points of initial search positions in a femoral neck. And search for the femoral neck smallest cross section and set a neck range quantitatively from the position. The system using this femoral neck range. I measure the femoral anteversion angle with the system and inspect the effectiveness of the suggestion system by the time required with the rose by the gauger.
language of the presentation: Japanese
発表題目: 大腿骨前捻角半自動計測法における操作者による影響低減方法の検討
発表概要: 大腿骨前捻角の正確な測定は人工股関節置換術や大腿骨骨折の治療などにおいて重要な役割を果たしている.従来法として大腿骨頚部を1mm間隔でスライスし,各スライスの重心位置に直線当てはめを行うことで頚部軸を決定し,頚部軸と大腿骨のテーブルトップ平面との角度を求めることで前捻角の測定を行う方法が存在する.しかし,測定者によって大腿骨頚部の範囲設定が曖昧なものである.本研究では測定者間の曖昧さを無くすために従来法を改良し,半自動的に測定が行える前捻角測定システムを開発する.提案法では,まず大腿骨頚部に初期探索位置を入力した上で大腿骨頚部の最小断面積となる面を自動探索し,その位置から頚部範囲を設定する.その頚部範囲を利用し従来法に則った処理を自動的に行い,前捻角測定を行う.提案法による前捻角の測定を行い,測定者によるばらつき,所要時間などにより提案法の有用性を検証する.
 
横山 直己 1551118: M, 1回目発表 計算システムズ生物学
title:The gene expression analysis of Euglena Gracilis abstract:Euglena is about 0.05mm about single-celled organisms that are photosynthesis like the plant. And it is also a flagellate that move around like animals. Now, this Euglena has attracted attention as an organism that is industrially valuable in the following two points. First, it is the point of property producing a substance serving as biofuels. Second, it has become possible to be applied to food by its rich nutrients. However, there are situations that analysis for the use of the Euglena industrially has not progressed so much. Therefore, the purpose of this study is to analyze whether the Euglena is adapted to the environment changes, and how it varied the gene expression by the data obtained from the next-generation sequencing.
 
角間 大輔 1551030: M, 1回目発表 ロボティクス
title: Navigation of the robot that has prior knowledge of the floor map
abstract: Currently, there are many approaches for navigation which uses the robotic environment map created by the robot. These approaches assume that the map was already obtained, and thus the robot needs to generate the map beforehand. In this study, we consider the navigation method, which uses a floor map of a target facility in place of the robotic map. Since the given floor map enables a robot to localize, generation of the robotic map is omitted. Since the correspondence between the floor and robotic maps is obtained, the place is designated by its name and the logging data is accessed through the geography.
language of the presentation: Japanese
発表題目: 環境地図を事前知識としたロボットのナビゲーション
発表概要: 近年,ロボットが作成した環境地図を用いてナビゲーションを行う手法が盛んに研究されている.これらの手法では環境地図をロボットが持っているという前提があり,ロボットを動かす前に環境地図を作る必要がある.本研究では,施設のフロアマップなどを利用するロボットのナビゲーション手法を考察する.与えられたフロアマップによってロボットの自己位置推定ができることで,環境地図を作成する手間が軽減される.さらに移動中に作成された環境地図とフロアマップとの対応がとれるため,フロアマップに示されたテキスト情 報との関連づけや、マップをキーとしたデータアクセスが可能となる.