Faculty Profiles - MONDEN Akito

MISC - MONDEN Akito

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A Java Class File Recommender System Based on Collaborative Filtering

KAKIMOTO Takeshi, TSUNODA Masateru, OHSUGI Naoki, MONDEN Akito, MATSUMOTO Ken'ichi

IEICE technical report. Dependable computing 104 ( 346 ) 29 - 34 2004.10

Language：Japanese Publisher：一般社団法人電子情報通信学会

Today, most software development platforms provide various software components. However, some software developers are not aware of useful components because extremely large amount of components are provided. This paper propose a system recommending the developers some Java class files by using Collaborative Filtering. Once a developer venters a Java class file which has been developed in ongoing project, the proposed system investigates used Java classes in the entered class file. Next, the system finds some similar class files from already completed class files which made in the past proje...

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協調フィルタリングに基づくソフトウェア機能推薦システム

大杉直樹, 門田暁人, 森崎修司, 松本健一

情報処理学会論文誌 45 ( 1 ) 267 - 278 2004

A support system for software function discovery using histories of function executions

Morisaki, S., Shiraishi, Y., Yamato, M., Monden, A., Matsumoto, K.-I., Torii, K.

Systems and Computers in Japan 35 ( 12 ) 93 - 106 2004

An Application of Collaborative Filtering for Software Reliability Prediction

TSUNODA Masateru, OHSUGI Naoki, MONDEN Akito, MATSUMOTO Ken'ichi

Technical report of IEICE. SS 103 ( 482 ) 19 - 24 2003.11

Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers

Data sets recorded in software development projects often contain a large amount of missing values. It is difficult for multivariate regression models to accurately predict software reliability using such data. To solve this problem, we propose a method to apply Collaborative Filtering for software reliability prediction. In our method, we use Collaborative Filtering to select past software projects similar to a target project and to predict its reliability with selected past projects. We applied our method to actual software projects data to estimate accuracy of prediction. The result of the case study showed that Collaborative Filtering showed better prediction performance than conventional regression models.

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Java クラスファイルからプログラム指紋を抽出する方法の提案

Haruaki Tamada, Yuichiro Kanzaki, Masahide Nakamura, Akito Monden, Ken-ichi Matsumoto

電子情報通信学会技術報告, 情報セキュリティ研究会 ( ISEC2003-29 ) 127 - 133 2003.7

Program Obfuscation by Coding Data and Its Operation

SATO Hirotsugu, MONDEN Akito, MATSUMOTO Ken-ichi

Technical Report of IEICE 102 ( 743 ) 13 - 18 2003.3

Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers

Protecting a program against illegal hacking and manipulations is a crucial problem for the software industry. For this purpose, this paper proposes a systematic method to obfuscate a program by applying a specific transformation to data and operators in the program. The proposed method consists of the following three steps : (1) encode each data (operand) appearing in a given expression, (2) replace operators in the expression, so that the evaluated value of the expression becomes an encoded value, (3) decode the encoded value when required. We present a set of operator transformation rules applied to data encoding based on linear transformation. In the program obtained by the proposed method. the operators are applieddirectly to the encoded data, and thus, the data is observed in the program stack as an "encode" value. Therefore, the proposed method is especially effective for the program hacking based on stack monitoring at run-time. As a rsult, it can be applied effectively to protecting software systems with security-related components, such as decrypt keys, decoding algorithms, authentication.

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The Development of a Software Search Engine for the World Wide Web

KAMEI Toshiyuki, MONDEN Akito, MATUMOTO Ken'ichi

Technical report of IEICE. SS 102 ( 617 ) 59 - 64 2003.1

Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers

Although many software systems had been developed in the world, the knowledge of developments has not been effectively accumulated and reused. 0n the other hand, there are many information sources on the WWW that are useful for software development, such as source codes and their related documents. Some of useful information can be retrieved by the common web search engines, however. these engines do not necessarily contain software itself in the database. Moreover. they do not have a functionality suitable for retrieving software resources. This paper describes the design of a software search engine, which have an ability to crawl the WWW space, to collect and analyze software resources, and to provide them to users. The user of our engine can search software resources using a query including symbols and values in software, such as product metrics. This paper also describes an implementation of a prototype system and an example of retrieval.

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コードクローンに基づくレガシーソフトウェアの品質の分析

門田暁人, 佐藤慎一, 神谷年洋, 松本健一

情報処理学会論文誌 44 ( 8 ) 2178 - 2188 2003

潜在コーディング規則違反を原因とするフォールトの検出支援方法の提案

松村知子, 門田暁人, 松本健一

情報処理学会論文誌 44 ( 4 ) 1070 - 1082 2003

視線・マウス併用型インタフェースのドラッグ＆ドロップ操作への適用

大和正武, 神代和範, 門田暁人, 松本健一

情報処理学会論文誌 44 ( 1 ) 166 - 175 2003

生物学実験支援のための視線インタフェース

門田暁人, 松矢明宏, 大和正武, 松本健一

情報処理学会論文誌 44 ( 8 ) 2266 - 2269 2003

命令コードの実行時置き換えによるプログラムの解析防止

Yuichiro Kanzaki, Akito Monden, Masahide Nakamura, Ken-ichi Matsumoto

信学技報, 情報セキュリティ研究会 ISEC2002-98 ( 511 ) 13 - 19 2002.12

Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers

In this paper, we present a new method to protect software against illegal acts of hacking. The key idea is to add a mechanism of self-modifying codes to the original binary program, so that the original program becomes hard to be analyzed. In the binary program obtained by the proposed method, the original code fragments we want to protect are camouflaged by dummy instructions. Then, the binary program autonomously retrieves the original code fragments within a certain period of execution, by replacing the dummy instructions with the original ones. Since the dummy instructions are completely different from the original ones, code hacking fails if the dummy instructions are read as they are. Moreover, the dummy instructions are scattered over the program, therefore, they are hard to be identified. As a result, the proposed method helps to construct highly invulnerable software without special hardware.

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A Method for Program Code Inspection Using Bug Report

MATSUMURA Tomoko, MONDEN Akito, MATSUMOTO Ken-ichi

Technical report of IEICE. SS 101 ( 628 ) 1 - 8 2002.1

Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers

Thorough an ongoing process of maintaining large legacy software, a number of "implicit coding rules", which are never described in specification documents or design documents, are unexpectedly generated as software becomes more complicated than it used be. Violating such rules cause fault injection. This paper proposes a method for automatically detecting and informing code fragments that violate implicit coding rules. In this method, patterns of typical code violating rules are derived from past bug reports. The patterns are described by a pattern description language, and, a potential faulty code fragments are extracted by a pattern matching technique. The result of a case study showed that 30% of faults in a large legacy system were due to the violation of implicit coding rules, 82% of these faults were descriptable by the pattern language, and, all these faults were extracted by the proposed method.

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Quantitative Analysis of Cloned Code on Legacy Software

NAKAE Daikai, KAMIYA Toshihiro, MONDEN Akito, KATO Hiroshi, SATO Shin-ichi, INOUE Katsuro

Technical report of IEICE. SS 100 ( 570 ) 57 - 64 2001.1

Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers

This paper shows the results of both quantitative analysis and qualitative analysis about the nature of cloned code on large legacy software. We defined some cloned code metrics, and then quantitatively analyzed the relation among the metrics and module's age, the number of bugs, etc. We also looked over the source code in order to qualitatively analyze the nature of cloned code. As the results, we found that new modules have more cloned code than old modules, more than half of cloned code were found between modules whose age are within 30 days difference, and the modules that have cloned code have fewer bugs (per line) than the modules that do not have cloned code, etc.

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Other Link： http://hdl.handle.net/11094/26715

Electronic Intellectual Properties and Social Infrastructure. A Digital Watermarking Method for Java Class Files.

門田暁人, 松本健一, 飯田元, 井上克郎, 鳥居宏次

情報処理学会論文誌 41 ( 11 ) 3001 - 3009 2000.11

A Digital Watermarking Method for Java Class Files

門田暁人, 松本健一, 飯田元, 井上克郎, 鳥居宏次

2000.11

Language：Japanese Publisher：情報処理学会

本論文では，盗用の疑いのあるJavaプログラムの発見を容易にすることを目的として，プログラム著作者の署名等を電子透かしとしてJavaクラスファイルに挿入する方法，および，取り出す方法を提案する．提案方法は，透かしを挿入してもプログラムの実行効率が変わらず，ツールによる透かしの取り出しの自動化が可能であり，ツールを公開した場合にも透かしの上書き攻撃を回避できるという特徴を持つ．透かしの耐性を実験により評価した結果，obfuscatorと呼ばれるプログラムの難読化ツールによる攻撃後も電子透かしは消えないこと，および，逆コンパイル，再コンパイルによる攻撃に対しても半数以上の透かしは消えないことが確認された．; The aim of this paper is to easily identifyan illegal Java program containing a stolen class file.This paper proposes a method for encoding and decoding a digital watermark,such as a program developer's copyright notation, into/from Java class files.Characteristics of the proposed method are:Execution efficiency of the target program is not reduced by watermarkencoding,watermark decoding can be automated,and, an overwriting attack is prevented even if a watermark encoding toolis distributed in the public.The result of the experiment to evaluate our method showed thatall the watermarks embedded in class files survived an obfuscator attack,and also showed thatmore than half of watermarks survived a decompile-recompile attack.

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Visualizing Users' Function - execution History of Software to Support Function Discovery

Shiraishi Yumi, Morisaki Shuuji, Monden Akito, Matsumoto Ken-ichi, Inoue Katsuro

IPSJ SIG Notes 2000 ( 97 ) 13 - 18 2000.10

Language：Japanese Publisher：Information Processing Society of Japan (IPSJ)

We are conducting a research on sharing usage knowledge of software functions according as the functions that are needed by users who use the same software for similar purpose are similar. In this paper, we propose a visualization method of histories of function executions collected in long period. The proposed method enables users to identify functions that are unaware of by them. We evaluated the proposed method adapting the method to MS Word and PowerPoint. Experimental result shows that all subjects can discover functions unaware and that the 34.5 functions out of discovered functions of PowerPoint are useful for the subjects.

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Other Link： http://id.nii.ac.jp/1001/00042327/

Sharing Usage Knowledge for Application Software Using Function Execution History

MORISAKI Shuuji, MONDEN Akito, MATSUMOTO Ken-ichi, INOUE Katsuro, TORII Koji

Transactions of Information Processing Society of Japan 41 ( 10 ) 2770 - 2781 2000.10

Language：Japanese Publisher：Information Processing Society of Japan (IPSJ)

Most of software, especially application software provides us with various functions. Since the acquisition cost of the use knowledge of a function is large, the number of functions actually used is limited. This paper proposes system that shares a functional execution history among users for the purpose of making small acquisition cost of the use knowledge of the function which software offers. The proposed system can collect functional execution histories from users automatically through computer network. It also provides a mechanism for exchanging the use knowledge of a function among users by sharing functional execution histories. Four subjects were able to acquire use knowledge among five persons as a result of the evaluation experiment for Microsoft Word 2000. Efficiency of novice work improved by knowledge acquisition. The use knowledge could be acquired also about the function in which an expert does not know.

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Other Link： http://id.nii.ac.jp/1001/00012162/

Visualizing Users' Function-execution History of Software to Support Function Discovery

SHIRAISHI Yumi, MORISAKI Shuuji, MONDEN Akito, MATSUMOTO Ken-ichi, INOUE Katsuro

Technical report of IEICE. Multimedia and virtual environment 100 ( 357 ) 13 - 18 2000.10

Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers

We are conducting a research on sharing usage knowledge of software functions according as the functions that are needed by users who use the same software for similar purpose are similar. In this paper, we propose a visualization method of histories of function executions collected in long period. The proposed method enables users to identify functions that are unaware of by them. We evaluated the proposed method adapting the method to MS Word and PowerPoint. Experimental result shows that all subjects can discover functions unaware and that the 34. 5 functions out of discovered functions of PowerPoint are useful for the subjects.

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利用情報を用いたソフトウェアコンポーネントの検索

古賀健太郎, 門田暁人, 飯田元, 松本健一, 井上克郎

情報処理学会全国大会講演論文集 61st ( 1 ) 1.309-1.310 2000.10

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