# clm_05E815813DAF

subject: Preferred Networks (/record/preferred-networks.md)  
predicate: released  
value: ChainerX  
valid_from: 2018-12-03  
valid_to: null  
published: 2018-12-02  
recorded: 2026-11-14  
confidence: 0.70  
status: valid  
assertable: true  
superseded_by: null  
last_updated: 2026-11-14  
cite: AsOf. "Preferred Networks released: ChainerX", as of 2018-12-03. Claim clm_05E815813DAF, https://asof.is/claim/clm_05E815813DAF, accessed 2026-11-14. Source: https://www.preferred.jp/en/news/pr20181203-1.  
checked: 2026-11-14 · its source page states the value and the date, as read by an AI model  

> Dec. 3, 2018, Tokyo Japan – Preferred Networks, Inc. (“PFN”, Head Office: Tokyo, President & CEO: Toru Nishikawa) releases ChainerX, a C++ implementation of automatic differentiation of N-dimensional arrays for the Chainer™ v6 open source deep learning framework.

What https://www.preferred.jp/en/news/pr20181203-1 says, word for word.

## Sources

- https://www.preferred.jp/en/news/pr20181203-1 (primary, Preferred Networks, published 2018-12-02)

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