INTERTALKER: an experimental automatic interpretation system using conceptual representation. - Kaichiro Hatazaki; Jun Noguchi; Akitoshi Okumura; Kazunaga Yoshida; Takao Watanabe (ICSLP, 1992)

Integrating Knowledge Bases and Statistics in MT. - Kevin Knight; Ishwar Chander; Matthew Haines; Vasileios Hatzivassiloglou; Eduard H. Hovy; Masayo Iida; Steve K. Luk; Akitoshi Okumura; Richard Whitney; Kenji Yamada (AMTA, 1994)

Lexicon-to-Ontology Concept Association Using a Bilingual Dictionary. - Akitoshi Okumura; Eduard H. Hovy (AMTA, 1994)

Symmetric Pattern Matching Analysis for English Coordinate Structures. - Akitoshi Okumura; Kazunori Muraki (ANLP, 1994)

Building Japanese-English Dictionary based on Ontology for Machine Translation. - Akitoshi Okumura; Eduard H. Hovy (HLT, 1994)

Information Retrieval System for TREC3. - Kenji Satoh; Akitoshi Okumura; Kiyoshi Yamabana (TREC, 1994)

Improvements on Query Term Expansion and Ranking Formula. - Kenji Satoh; Susumu Akamine; Akitoshi Okumura (TREC, 1995)

Adaptable Information Clipping Service Supported by Evolving User Profile and Multiple Ontologies. - Takahiro Ikeda; Akitoshi Okumura; Kazunori Muraki (HCI (1), 1997)

Information Retrieval Supported by Rich and Redundant Indices. - Kenji Satoh; Susumu Akamine; Kazunori Muraki; Akitoshi Okumura (HCI (2), 1997)

Query Term Expansion based on Paragraphs of the Relevant Documents. - Kai Ishikawa; Kenji Satoh; Akitoshi Okumura (TREC, 1997)

Information Classification and Navigation Based on 5W1H of the Target Information. - Takahiro Ikeda; Akitoshi Okumura; Kazunori Muraki (COLING-ACL, 1998)

Ad Hoc Retrieval Experiments Using WordNet and Automatically Constructed Thesauri. - Rila Mandala; Takenobu Tokunaga; Hozumi Tanaka; Akitoshi Okumura; Kenji Satoh (TREC, 1998)

Documentation Know-How Sharing by Automatic Process Tracking. - Kenji Satoh; Akitoshi Okumura (IUI, 1999)

Cross Language Information Retrieval Based on Comparable Corpora. - Satoshi Nakazawa; Takayoshi Ochiai; Kenji Satoh; Akitoshi Okumura (NTCIR, 1999)

An automatic interpretation system for travel conversation. - Takao Watanabe; Akitoshi Okumura; Shinsuke Sakai; Kiyoshi Yamabana; Shinichi Doi; Ken Hanazawa (INTERSPEECH, 2000)

Evaluating Automatic Text Summarization with Summary Results by the Experienced and the Inexperienced. - Kai Ishikawa; Shinichi Ando; Akitoshi Okumura (NLPRS, 2001)

Hybrid Text Summarization Method based on the TF Method and the Lead Method. - Kai Ishikawa; Shinichi Ando; Akitoshi Okumura (NTCIR, 2001)

Automatic Interpretation System Integrating Free-Style Sentence Translation and Parallel Text Based Translation. - Takahiro Ikeda; Shinichi Ando; Kenji Satoh; Akitoshi Okumura (Speech-to-Speech Translation@ACL, 2002)

Topic Detection Based on Dialogue History. - Takayuki Nakata; Takahiro Ikeda; Shinichi Ando; Akitoshi Okumura (Speech-to-Speech Translation@ACL, 2002)

Topic Detection Based on Dialogue History. - Takayuki Nakata; Shinichi Ando; Akitoshi Okumura (COLING, 2002)

An Automatic Speech Translation System on PDAs for Travel Conversation. - Ryosuke Isotani; Kiyoshi Yamabana; Shinichi Ando; Ken Hanazawa; Shin-ya Ishikawa; Tadashi Emori; Ken-ichi Iso; Hiroaki Hattori; Akitoshi Okumura; Takao Watanabe (ICMI, 2002)

Trainable Automatic Text Summarization Using Segmentation of Sentence. - Kai Ishikawa; Shinichi Ando; Shinichi Doi; Akitoshi Okumura (NTCIR, 2002)

A Speech Translation System with Mobile Wireless Clients. - Kiyoshi Yamabana; Ken Hanazawa; Ryosuke Isotani; Seiya Osada; Akitoshi Okumura; Takao Watanabe (ACL (Companion), 2003)

Speech-activated text retrieval system for multimodal cellular phones. - Shin-ya Ishikawa; Takahiro Ikeda; Kiyokazu Miki; Fumihiro Adachi; Ryosuke Isotani; Ken-ichi Iso; Akitoshi Okumura (ICASSP (1), 2004)

An HMM-based Text Segmentation Method Using Variational Bayes Approach and Its Application to LVCSR for Broadcast News. - Takafumi Koshinaka; Ken-ichi Iso; Akitoshi Okumura (ICASSP (1), 2005)

Speech-Activated Text Retrieval System for Cellular Phones with Web Browsing Capability. - Takahiro Ikeda; Shin-ya Ishikawa; Kiyokazu Miki; Fumihiro Adachi; Ryosuke Isotani; Kenji Satoh; Akitoshi Okumura (PACLIC, 2005)

Parallel LVCSR Algorithm for Cellphone-Oriented Multicore Processors. - Shin-ya Ishikawa; Kiyoshi Yamabana; Ryosuke Isotani; Akitoshi Okumura (ICASSP (1), 2006)

A User Interface-Level Integration Method for Multiple Automatic Speech Translation Systems. - Seiya Osada; Kiyoshi Yamabana; Ken Hanazawa; Akitoshi Okumura (PACLIC, 2006)

Multimedia Blog Creation System using Dialogue with Intelligent Robot. - Akitoshi Okumura; Takahiro Ikeda; Toshihiro Nishizawa; Shinichi Ando; Fumihiro Adachi (ACL, 2007)

Open-vocabulary spoken-document retrieval based on query expansion using related web documents. - Makoto Terao; Takafumi Koshinaka; Shinichi Ando; Ryosuke Isotani; Akitoshi Okumura (INTERSPEECH, 2008)

Identity Confirmation to Issue Tickets Using Face Recognition. - Akitoshi Okumura; Susumu Handa; Takamichi Hoshino; Yugo Nishiyama (HCI (26), 2016)

Identity Verification of Ticket Holders at Large-scale Events Using Face Recognition. - Akitoshi Okumura; Takamichi Hoshino; Susumu Handa; Yugo Nishiyama; Masahiro Tabuchi (J. Inf. Process., 2017)

Identity Verification for Attendees of Large-scale Events Using Face Recognition of Selfies Taken with Smartphone Cameras. - Akitoshi Okumura; Takamichi Hoshino; Susumu Handa; Eiko Yamada; Masahiro Tabuchi (J. Inf. Process., 2018)

Identity Verification Using Face Recognition for Artificial-Intelligence Electronic Forms with Speech Interaction. - Akitoshi Okumura; Shuji Komeiji; Motohiko Sakaguchi; Masahiro Tabuchi; Hiroaki Hattori (HCI (29), 2019)

Identity Verification Using Face Recognition Improved by Managing Check-in Behavior of Event Attendees. - Akitoshi Okumura; Susumu Handa; Takamichi Hoshino; Naoki Tokunaga; Masami Kanda (JSAI, 2019)

Improving Face Recognition for Identity Verification by Managing Facial Directions and Eye Contact of Event Attendees. - Akitoshi Okumura; Susumu Handa; Takamichi Hoshino; Naoki Tokunaga; Masami Kanda (J. Inf. Process., 2020)

WISDOM-DX: An Automatic DX Assessment System Using a QA System Based on Web Data. - Kai Ishikawa; Akitoshi Okumura; Dai Kusui; Noriyoshi Ichinose; Kentaro Torisawa; Kiyonori Ohtake (J. Inf. Process., 2023)

Development of the WISDOM-DX Recommendation System for Enhancing DX Talent Development. - Akitoshi Okumura; Noriyoshi Ichinose; Hirona Yasuda; Dai Kusui; Kai Ishikawa; Kentaro Torisawa; Kiyonori Ohtake (HCI (62), 2025)