著者
高野 敦子 平井 誠 北橋 忠宏
出版者
一般社団法人電子情報通信学会
雑誌
電子情報通信学会技術研究報告. NLC, 言語理解とコミュニケーション
巻号頁・発行日
vol.95, no.29, pp.25-32, 1995-05-12
被引用文献数
2 1

我々は,ユーザが自然言語を用いてシステムと対話することによってデータベースから情報を検索するためのユーザフレンドリーなインタフェースの提供を目指している.そのための基礎技術の1つとして,本研究ではユーザの検索文に対する協調的な応答生成手法を提案する.我々は,既に対話一般を対象として,質問文に対して協調的な応答を生成するモデルを提案している.そこで,ユーザの検索文を質問文と捉え,そのモデルをデータベース検索という観点から再構成することによって協調的な応答生成手法を示す.本手法では,検索者の意図を考慮することにより,検索の失敗への対応含めてより検索者の目的に合った応答の実現を図る.また,検索者の意図の実現や心理的要素を考慮して検索者にとって有用な情報を付加した応答を生成する.
著者
高野 敦 松林 三和子 松田 淑男 高野 千尋 小畑 貴稔 森川 洋
出版者
一般社団法人 日本機械学会
雑誌
日本機械学会論文集A編 (ISSN:18848338)
巻号頁・発行日
vol.79, no.801, pp.682-690, 2013 (Released:2013-05-25)
参考文献数
22
被引用文献数
1 1

A high strength bolt fastening system for satellite structures has been developed. This fastening system enables high frictional strength by adopting titanium bolts with high strength and low torque-coefficient, as well as shims with high friction coefficient. Low torque-coefficient of the titanium bolts is achieved by PTFE (Polytetrafluoroethylene) solid-film lubricant, which is coated on the bolts. High friction coefficient of the shim is achieved by surface roughening by etching. To verify the design of the fastening system, long-term preload test, torque-coefficient test and vibration loosening test (Junker's test) were conducted and successfully completed. In addition, the fastening system was applied to a development model of satellite structure and was verified by mechanical environmental tests (static load test, system vibration test and thermal vacuum test). The observation showed no evidence of slip or alignment deviation. Thus, a conventional reamer-bolted-fastening system can be replaced with the developed high strength bolt fastening system that saves manufacturing period of satellites and furthermore enables the satellites to be competitive in terms of cost, delivery and performance.
著者
高野 敦 松林 三和子 松田 淑男 小畑 貴稔 森川 洋
出版者
一般社団法人 日本機械学会
雑誌
日本機械学会論文集A編 (ISSN:18848338)
巻号頁・発行日
vol.79, no.804, pp.1201-1209, 2013 (Released:2013-08-25)
参考文献数
13
被引用文献数
1 2

Long-term measurement and prediction for Ti-6Al-4V and A286 bolts was conducted. It was pointed out that Ti-6Al-4V indicates significant creep behavior and accumulated large creep strain and thus Ti-6Al-4V can not be applied for preloaded bolts. In addition, preload relaxation due to creep of solid-film lubricants for bolts and fastened aluminum parts were also pointed out. Recently, the authors developed a high strength bolted fastening system for satellite structures with PTFE (polytetrafluoroethylene) solid film lubricated Ti-6Al-4V bolts and aluminum threadedand drilled-hole parts. The authors, hence, measured the preload of the fastening system for 253-days, predicted 30-years later preload, and confirmed that the preload reduction was not harmful.
著者
高野 敦子 池奥 渉太 北村 泰彦
出版者
The Japanese Society for Artificial Intelligence
雑誌
人工知能学会論文誌 (ISSN:13460714)
巻号頁・発行日
vol.24, no.3, pp.322-332, 2009
被引用文献数
3 2

Recently, the role of reputation information in on-line discussion groups and review sites has received much attention, and that has spurred a great deal of research on sentiment analysis of web documents. It is well known that collecting sentiment expressions, which tend to be domain-dependent, is useful for sentiment analysis. However, it can be prohibitively costly to manually collect expressions for each domain. The purpose of this paper is to propose an automatic method to acquire sentiment expressions on a specific subject from web documents.<BR> Our approach is based on a characteristic of sentiment expressions that often appear with their sentiment causes and both of them have cause-and-effect relationships. We develop a technique for recognizing cause-and-effect relationships between sentiment expressions and their sentiment causes using the results of dependency structure analysis. The proposed method uses this technique to extract sentiment causes starting from a small set of seed sentiment expressions, and extracts sentiment expressions from a set of sentiment causes. <BR> To evaluate this work, we conducted experiments using discussion board messages about hotels and sweets. The results demonstrate that the proposed method effectively extract diversified sentiment expressions relevant to each domain and possesses adequate precision. Precision is also found to be better for compound sentiment expressions.
著者
船見 祐揮 高野 敦 Funami Yuki Takano Atsushi
出版者
宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)
雑誌
第2回ハイブリッドロケットシンポジウム 講演集 = Proceedings of the 2nd Hybrid Rocket Symposium
巻号頁・発行日
2019-07

第2回ハイブリッドロケットシンポジウム(2019年7月11日-12日. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)), 相模原市, 神奈川県
著者
高野敦
出版者
日経BP社
雑誌
日経ものづくり (ISSN:13492772)
巻号頁・発行日
no.604, pp.91-96, 2005-01
被引用文献数
1

昨日までは安全だったはずのフロントハブが一転して強度不足に—。2004年11月,三菱ふそうトラック・バス(本社東京)は新しく策定したハブの安全基準を発表した。この新基準では,これまで安全と判断していた「F型」フロントハブが一部の車種で強度不足となり,同社は該当する約1万9500台の大型車を同年12月にリコールした*1。 ハブとは,車軸とホイールを連結するための部品。
著者
高野 敦 森永 洋次 井上 登志夫
出版者
一般社団法人 日本機械学会
雑誌
日本機械学会論文集A編 (ISSN:18848338)
巻号頁・発行日
vol.79, no.800, pp.455-462, 2013 (Released:2013-04-25)
参考文献数
15

Methods of evaluating the one-sided tolerance limit (A- and B-basis values) of unbalanced sample sets are derived. The A- and B-basis values are statistically calculated numbers that respectively indicate that at least 99 and 90 percent of the population is expected to equal or exceed the statistically calculated value with a confidence of 95 percent, and they are often used as strength tolerance limits in aerospace designs. The A- and B-basis values tend to be underestimated when the sample size is small and the conventional methods are used. Our novel methods improve the basis values by combining multiple sample sets from normally (Gaussian) distributed populations. We extended analysis of variance (ANOVA) to evaluate the A- and B-basis values by using non-central t-distribution under the condition of equality of variances. In addition, we derive coefficients for the basis values under the condition of non-equality of variances by using a Monte-Carlo method. Numerical examples show that both methods, i.e., equality and non-equality of variance cases, increase the A- and B-basis values.
著者
當間 愛晃 遠藤 聡志 岡崎 威生 石原 洋 宮城 渉 大城 翔 植木 宏 高野 敦伸 稲荷 幹夫 比嘉 徹
出版者
一般社団法人電子情報通信学会
雑誌
電子情報通信学会技術研究報告. KBSE, 知能ソフトウェア工学 (ISSN:09135685)
巻号頁・発行日
vol.105, no.652, pp.19-24, 2006-03-06
被引用文献数
1

電子マネーユーザに対し購買履歴に基づいたマーケティングを行うための基礎データとなる特徴抽出を行い,ユーザをクラスタリングする方法について検討を行う.特に,ユーザプロファイルおよび購買履歴情報に対し自己組織化マップや協調フィルタリング等を適用したクラスタリング抽出のために検討した事項や,抽出結果について報告を行う.
著者
高野 敦子 池奥 渉太 北村 泰彦
出版者
一般社団法人 人工知能学会
雑誌
人工知能学会論文誌 (ISSN:13460714)
巻号頁・発行日
vol.24, no.3, pp.322-332, 2009 (Released:2009-04-16)
参考文献数
11
被引用文献数
2

Recently, the role of reputation information in on-line discussion groups and review sites has received much attention, and that has spurred a great deal of research on sentiment analysis of web documents. It is well known that collecting sentiment expressions, which tend to be domain-dependent, is useful for sentiment analysis. However, it can be prohibitively costly to manually collect expressions for each domain. The purpose of this paper is to propose an automatic method to acquire sentiment expressions on a specific subject from web documents. Our approach is based on a characteristic of sentiment expressions that often appear with their sentiment causes and both of them have cause-and-effect relationships. We develop a technique for recognizing cause-and-effect relationships between sentiment expressions and their sentiment causes using the results of dependency structure analysis. The proposed method uses this technique to extract sentiment causes starting from a small set of seed sentiment expressions, and extracts sentiment expressions from a set of sentiment causes. To evaluate this work, we conducted experiments using discussion board messages about hotels and sweets. The results demonstrate that the proposed method effectively extract diversified sentiment expressions relevant to each domain and possesses adequate precision. Precision is also found to be better for compound sentiment expressions.