# clm_832F29520B67

subject: Preferred Networks (/record/preferred-networks.md)  
predicate: released  
value: Optuna v2.0  
valid_from: 2020-07-29  
valid_to: null  
published: 2020-07-28  
recorded: 2026-11-14  
confidence: 0.70  
status: valid  
assertable: true  
superseded_by: null  
last_updated: 2026-11-14  
cite: AsOf. "Preferred Networks released: Optuna v2.0", as of 2020-07-29. Claim clm_832F29520B67, https://asof.is/claim/clm_832F29520B67, accessed 2026-11-14. Source: https://www.preferred.jp/en/news/pr20200729.  
checked: 2026-11-14 · its source page states the value and the date, as read by an AI model  

> TOKYO – July 29, 2020 – Preferred Networks, Inc. (PFN) today released Optuna v2.0, the second major update of the open-source hyperparameter optimization framework for machine learning

What https://www.preferred.jp/en/news/pr20200729 says, word for word.

## Sources

- https://www.preferred.jp/en/news/pr20200729 (primary, Preferred Networks, published 2020-07-28)

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