Recently, I want to write something about data in physics

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SUMMARY

The discussion centers on the intersection of machine learning and physics, specifically how data-driven models can replicate or replace traditional mathematical formulas in physics. Participants highlight a program developed at Cornell that successfully extracted equations of motion for a mechanical pendulum using data alone, demonstrating the potential of machine learning in scientific discovery. However, concerns are raised about the inability to explain results derived from machine learning, emphasizing the need for theoretical backing in scientific research. The conversation also touches on the practical applications of such technologies in fields like agriculture.

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  • Understanding of machine learning principles and techniques.
  • Familiarity with data modeling and analysis in scientific contexts.
  • Knowledge of the role of theoretical frameworks in scientific research.
  • Awareness of the applications of machine learning in various industries, including agriculture.
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  • Explore the principles of machine learning in scientific research.
  • Investigate the use of data-driven models in physics, focusing on case studies like the Cornell program.
  • Learn about the limitations of machine learning in deriving scientific theories.
  • Research the impact of machine learning applications in agriculture and other industries.
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Researchers, physicists, data scientists, and anyone interested in the implications of machine learning in scientific discovery and its applications across various fields.

Pring
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Nowadays, the machine learning of computer science is hot. It is based on data, and drove by data. Thus, a question is naturally coming out: the data in physics, and the models of data. I think it is a really empirical way to know how physicists do the same thing as the computer scientists. So could you give some examples about the data in physics or give the links?
 
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Good. Is thee anything we can help you with? A question, perhaps ?

Did you notice your post got an 'advanced' tag, meaning PhD level ?
 
Pring said:
Nowadays, the machine learning of computer science is hot. It is based on data, and drove by data. Thus, a question is naturally coming out: the data in physics, and the models of data. I think it is a really empirical way to know how physicists do the same thing as the computer scientists.
Are you investigating the question, whether the current physics (mathematical formulas) will be once replaced by neutral networks, which predict the outcome of experiments?
 
A.T. said:
Are you investigating the question, whether the current physics (mathematical formulas) will be once replaced by neutral networks, which predict the outcome of experiments?
That's a horror idea! I just think of the key idea 'from data to model' in physics instead of investigating it.
 
There is a fundamental weakness in using machine learning methods in science. Once we discover something we need to be able to explain it but that might not be possible.

Cornell has a program that extracted the equations of motion for a compound mechanical pendulum using lots of data with no knowledge of physics. It worked so they tried it on some cellular data and discovered some behavior in cells never before quantified as an equation. However the biologists said they couldn't publish because they didn't have a theory to explain the result.

https://www.wired.com/2009/04/Newtonai/
 
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jedishrfu said:

If you follow that link deep enough, you discover it spawned a company, which was then bought by an agricultural seed company, which uses it to evaluate hybrid seeds to market to farmers! You may even be eating the results in your next meal.

So it appears there was a use for the program after-all!
 

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