| James William Breen | |
| Honorific Suffix: | BSc (Melb), MBA (Melb), PhD (Melb), AMusA (AMEB), RSA |
| Other Names: | Jim Breen |
| Occupation: | Head of the Department of Digital Systems, Monash University |
| Known For: | WWWJDIC, JMdict, EDICT, KANJIDIC |
| Professor (retired) | |
| Boards: | Japanese Studies Centre, Monash University |
| Spouse: | Julia Breen |
| Children: | 3 |
| Education: | University of Melbourne, Australian Music Examinations Board |
| Alma Mater: | University of Melbourne |
| Thesis Title: | Extraction of neologisms from Japanese corpora |
| Thesis Url: | https://hdl.handle.net/11343/211675 |
| Thesis Year: | 2017 |
| Doctoral Advisor: | Timothy Baldwin |
| Discipline: | Computational Linguistics, Computer Science |
| Sub Discipline: | Digital and Data Communications, Lexicography |
| Workplaces: | Monash University, Chisholm Institute of Technology |
James William Breen (born 1947) is an Australian retired academic, computational linguist and lexicographer. He is best known for creating and maintaining several foundational free resources for Japanese language learning and computational linguistics, including the EDICT/JMDict Japanese–English dictionaries, the KANJIDIC kanji dictionary, and the WWWJDIC online search portal. These resources are considered "reliable and close to comprehensive" and form the backbone of many popular Japanese dictionary applications and websites.[1]
After completing a BSc in mathematics at the University of Melbourne, Breen began his career in 1968 as a trainee programmer for the Australian Postmaster-General's Department.[2] He subsequently worked for the Defence Department and a private consultancy, specialising in systems programming, computer networking, and communications. During this time, he also earned an MBA from the University of Melbourne.[2]
In 1985, Breen moved into academia, assuming position as Principal Lecturer at the Chisholm Institute of Technology. He immediately became Head of the Department of Robotics & Digital Technology (later the Department of Digital Systems).[2] In 1990, Chisholm merged with Monash University, where Breen's position was converted to Associate Professor and later to a fixed-term full Professor while he headed the department. He served as Head of Department for 11 years 6 months, until 1997.[2]
Breen took early retirement from his tenured position in August 2003, but remained affiliated with Monash as an Honorary (later Adjunct) Senior Research Fellow. Until mid-2025, he held this position in the Japanese Studies Centre, where he also served on the board.[3] [4]
Following his retirement, Breen's research interests shifted decisively to computational linguistics. His major project has, for a very long time, been the development and curation of free, open-source Japanese lexical resources.[3] These resources are widely used worldwide, including in the creation of popular language learning tools such as Jisho.org, Rikai, and mobile apps like ImiWa and AEDict.
From December 2000 to June 2001, Breen was a Visiting Professor at the Research Institute for the Languages and Cultures of Asia and Africa (ILCAA) at the Tokyo University of Foreign Studies in Japan.[3]
In 2009, he commenced a part-time PhD in computational linguistics at the University of Melbourne, supervised by Timothy Baldwin. His thesis, "Extraction of neologisms from Japanese corpora," was submitted in 2017.[3]
Breen currently lives in Camberwell, Victoria with his wife, Julia, a Suzuki method music teacher. They have three adult children and grandchildren.[2] An active rower, he is a member and former treasurer of the Hawthorn Rowing Club. He and his wife also maintain a weekend home in Jamieson, Victoria.[2] Breen has been a dedicated user of the Linux operating system since 1994 and is an occasional music reviewer for the Classic Melbourne website.[2]
