最近几个月在雀魂/天凤平台出现了一款新的AI外挂：大教练（Big Coach）。他的打法和Mortal/Naga风格差异很大，因此十分隐蔽，难以通过解析牌谱的手段发现，但是此AI在天凤/雀魂平台取得了非常华丽的战绩，有大量证据表明，大教练就是基于Mortal代码使用其他数据训练而成，大教练的作者使用这份开源代码训练了一系列模型并以订阅的方式出售盈利，大量不正打人员使用该外挂在天凤/雀魂平台升到了很高的段位（比如十段，魂天），严重影响了正常人的对局。我相信该项目的作者开源代码的目的初衷是促进学习和研究，但是这次开源所导致的外挂泛滥确实严重影响了网络麻将平台对局的公平性，而且大教练的作者使用该代码训练得到的模型进行商用并牟取了大量利润，但并未开源其代码和模型，也没有遵守AGPL3.0协议，这令人痛心疾首。
In recent months, a new AI cheating tool has appeared on the Mahjong Soul (雀魂) and Tenhou (天凤) platforms: Big Coach. Its playing style differs significantly from that of Mortal and Naga, making it highly covert and difficult to detect through replay analysis. However, this AI has achieved extremely impressive results on both Tenhou and Mahjong Soul. There is substantial evidence indicating that Big Coach is based on the Mortal codebase but trained with different data.
The author of Big Coach used this open-source code to train a series of models and sold access to them through a subscription-based model for profit. A large number of dishonest players have used this cheating tool to reach very high ranks on Tenhou and Mahjong Soul (such as 10-dan and Soul Heaven), which has severely affected fair play for normal users.
I believe that the original intention of the open-source author was to promote learning and research. However, the widespread abuse of cheating tools resulting from this release has indeed seriously undermined the fairness of online mahjong platforms. Moreover, the author of Big Coach has used models trained from this code for commercial purposes and gained substantial profits, while neither open-sourcing the code or models nor complying with the AGPL-3.0 license. This is deeply distressing.
最近几个月在雀魂/天凤平台出现了一款新的AI外挂：大教练（Big Coach）。他的打法和Mortal/Naga风格差异很大，因此十分隐蔽，难以通过解析牌谱的手段发现，但是此AI在天凤/雀魂平台取得了非常华丽的战绩，有大量证据表明，大教练就是基于Mortal代码使用其他数据训练而成，大教练的作者使用这份开源代码训练了一系列模型并以订阅的方式出售盈利，大量不正打人员使用该外挂在天凤/雀魂平台升到了很高的段位（比如十段，魂天），严重影响了正常人的对局。我相信该项目的作者开源代码的目的初衷是促进学习和研究，但是这次开源所导致的外挂泛滥确实严重影响了网络麻将平台对局的公平性，而且大教练的作者使用该代码训练得到的模型进行商用并牟取了大量利润，但并未开源其代码和模型，也没有遵守AGPL3.0协议，这令人痛心疾首。
In recent months, a new AI cheating tool has appeared on the Mahjong Soul (雀魂) and Tenhou (天凤) platforms: Big Coach. Its playing style differs significantly from that of Mortal and Naga, making it highly covert and difficult to detect through replay analysis. However, this AI has achieved extremely impressive results on both Tenhou and Mahjong Soul. There is substantial evidence indicating that Big Coach is based on the Mortal codebase but trained with different data.
The author of Big Coach used this open-source code to train a series of models and sold access to them through a subscription-based model for profit. A large number of dishonest players have used this cheating tool to reach very high ranks on Tenhou and Mahjong Soul (such as 10-dan and Soul Heaven), which has severely affected fair play for normal users.
I believe that the original intention of the open-source author was to promote learning and research. However, the widespread abuse of cheating tools resulting from this release has indeed seriously undermined the fairness of online mahjong platforms. Moreover, the author of Big Coach has used models trained from this code for commercial purposes and gained substantial profits, while neither open-sourcing the code or models nor complying with the AGPL-3.0 license. This is deeply distressing.