Takuma Yamaguchi

Mercari, Inc. / Software Engineer / Data Engineer

Takuma Yamaguchi

Mercari, Inc. / Software Engineer / Data Engineer

東京

Takuma Yamaguchi

Mercari, Inc. / Software Engineer / Data Engineer

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Living with Data

機械学習や画像認識・コンピュータビジョンの研究に10年以上携わり、それらに加えオペレーションズリサーチ分野やビッグデータ関連のシステム開発、WEBアプリケーション開発などにも従事。現職、メルカリでは、画像認識を中心とした機械学習技術を積極的に使って、より良いサービスをユーザに届けられるように日々奮闘中。

2016年6月
-
現在

Software Engineer / Data Engineer
現在

2016年6月 -

現在

Bring a better customer experience with the latest technologies in machine learning and computer vision.

Software Engineer / Data Engineer

2016年6月 -

現在

Bring a better customer experience with the latest technologies in machine learning and computer vision.

2012年1月
-
2016年5月

GREE, Inc.

5 years

Engineering Manager / Lead Engineer

2012年1月 - 2016年5月

SNS & Game Data Analysis & Big Data Analysis System Operation (2012-2016): My responsibilities include SNS & game data analysis, big data analysis system operation, developing user tracking system / log collection system / BI tool / recommendation algorithms, and so on. Since the number of SNS & game data is huge like billions records per day, we have created and used on-premise Hadoop based analys

Engineering Manager / Lead Engineer

2012年1月 - 2016年5月

SNS & Game Data Analysis & Big Data Analysis System Operation (2012-2016): My responsibilities include SNS & game data analysis, big data analysis system operation, developing user tracking system / log collection system / BI tool / recommendation algorithms, and so on. Since the number of SNS & game data is huge like billions records per day, we have created and used on-premise Hadoop based analys

2006年4月
-
2012年1月

Research Scientist / Software Engneer

2006年4月 - 2012年1月

Railway Automatic Ticket Gate (2010-2011): The aims of this project are to eliminate illegal passage and to realize supporting system for disability people in a train station. For that purpose, several cameras and an image processing engine are being installed to railway automatic ticket gate. Responsibilities include project management, designing and implementing scene understanding algorithm on CPU and DSP, and making proposal the work to clients.

Research Scientist / Software Engneer

2006年4月 - 2012年1月

Railway Automatic Ticket Gate (2010-2011): The aims of this project are to eliminate illegal passage and to realize supporting system for disability people in a train station. For that purpose, several cameras and an image processing engine are being installed to railway automatic ticket gate. Responsibilities include project management, designing and implementing scene understanding algorithm on CPU and DSP, and making proposal the work to clients.

2010年3月

信州大学

Ph.D. in Engineering

2010年3月

Ph.D. Thesis: Extracting Character Information from Images.

信州大学

Ph.D. in Engineering

2010年3月

Ph.D. Thesis: Extracting Character Information from Images.

Technology Award from Scheduling Society of Japan

2008年2月

Best Paper Award Honorable Mention in 8th IAPR International Workshop on Document Analysis Systems, 2008.

2008年2月

2004年4月
-
2006年3月

Research Scientist / Software Engneer

2004年4月 - 2006年3月

Image and Voice Understanding (2004-2006): Main responsibility was to improve the performances of OCR(Optical Character Recognition) engine and singing voice classification engine. The contributions were reducing computation time for OCR by a coarse-to-fine approach using multiple OCR engines hierarchically, and improving the performance of singing voice classification using a reliability parameter which was measured by my proposed method.

Research Scientist / Software Engneer

2004年4月 - 2006年3月

Image and Voice Understanding (2004-2006): Main responsibility was to improve the performances of OCR(Optical Character Recognition) engine and singing voice classification engine. The contributions were reducing computation time for OCR by a coarse-to-fine approach using multiple OCR engines hierarchically, and improving the performance of singing voice classification using a reliability parameter which was measured by my proposed method.

2004年3月

信州大学

M.S. in Engineering

2004年3月

M.S. Thesis: Character Extraction and Recognition on Natural Scene Images.

信州大学

M.S. in Engineering

2004年3月

M.S. Thesis: Character Extraction and Recognition on Natural Scene Images.

B.S. in Engineering

B.S. Thesis: Extracting Place-Names from Natural Scene.

1998年3月

福岡県立八幡高等学校

1998年3月

福岡県立八幡高等学校

1998年3月


スキルと特徴

Deep Learning

0

TensorFlow

0

Algorithm

0

MySQL

0

HBase

0

Awards and Certifications

Technology Award from Scheduling Society of Japan

2008年2月

Best Paper Award Honorable Mention in 8th IAPR International Workshop on Document Analysis Systems, 2008.

2008年2月


言語

日本語 - ネイティブ, 英語 - ビジネス会話