One challenge is having enough training data. Another is that the training data needs to be free of contamination. For a model trained up till 1900, there needs to be no information from after 1900 that leaks into the data. Some metadata might have that kind of leakage. While it’s not possible to have zero leakage - there’s a shadow of the future on past data because what we store is a function of what we care about - it’s possible to have a very low level of leakage, sufficient for this to be interesting.
ВСУ запустили «Фламинго» вглубь России. В Москве заявили, что это британские ракеты с украинскими шильдиками16:45
，更多细节参见同城约会
Жители Санкт-Петербурга устроили «крысогон»17:52。heLLoword翻译官方下载对此有专业解读
中央生态环保督察通报天津部分地区生态保护和修复治理短板明显