Victory Day is a holiday that commemorates the Soviet victory over Nazi Germany in 1945. It was first inaugurated in the 15 republics of the Soviet Union following the signing of the German Instrument of Surrender late in the evening on 8 May 1945 (9 May Moscow Time). The Soviet government announced the victory early on 9 May after the signing ceremony in Berlin. Although the official inauguration occurred in 1945, the holiday became a non-labor day only in 1965, and only in certain Soviet republics.
The German Instrument of Surrender was signed twice. An initial document was signed in Reims on 7 May 1945 by Alfred Jodl (chief of staff of the German OKW) for Germany, Walter Bedell Smith, on behalf of the Supreme Commander of the Allied Expeditionary Force, and Ivan Susloparov, on behalf of the Soviet High Command, in the presence of French Major-General François Sevez as the official witness.
Since the Soviet High Command had not agreed to the text of the surrender, and because Susloparov, a relatively low-ranking officer, was not authorized to sign this document, the Soviet Union requested that a second, revised, instrument of surrender be signed in Berlin.
A second surrender ceremony was organized in a surviving manor in the outskirts of Berlin late on 8 May, when it was already 9 May in Moscow due to the difference in time zones.
During the Soviet Union’s existence, 9 May was celebrated throughout it and in the Eastern Bloc. Though the holiday was introduced in many Soviet republics between 1946 and 1950, it became a non-working day only in the Ukrainian SSR in 1963 and the Russian SFSR in 1965
The celebration of Victory Day continued during subsequent years. The war became a topic of great importance in cinema, literature, history lessons at school, the mass media, and the arts. The ritual of the celebration gradually obtained a distinctive character with a number of similar elements: ceremonial meetings, speeches, lectures, receptions and fireworks.
Victory Day in modern Russia has become a celebration in which popular culture plays a central role. The 60th and 70th anniversaries of Victory Day in Russia (2005 and 2015) became the largest popular holidays since the collapse of the Soviet Union.
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But you wouldn’t have a priori estimates on this. And I’m not sure how it would be trained, but I don’t think it would be possible for the training data to be anything that would allow it to perform as well as a PDE solver (unless our understanding of the underlying physics is fundamentally wrong). The training data would either have to be made by a PDE solver or through direct experimental data, which makes it inherently as or less accurate than a PDE solver.
Okay just thinking out loud here, everything I’ve seen so far works as you described, the training data is taken either from reality or generated by a traditional solver. I’m not sure this is a fundamental limitation though, you should be able to create a loss function that asks “how closely does the output satisfy the PDE?” rather than “how closely does the output match the data generated by my solver?”. But anyway you wouldn’t need to improve on the accuracy of the most accurate methods to get something useful, if the NN is super fast and has acceptable accuracy you can use that to do the bulk of your optimization and then use a regular simulation and or reality to check the result and possibly do some fine-tuning.