Beyond Two-Point Correlations: Neural Networks Map the Universe
![The study demonstrates a method for assessing the constraining power of a C3NN model by subjecting training maps to phase randomization within their Fourier transforms-a process involving Fast Fourier Transforms (FFT), uniform phase distribution between 0 and [latex]2\pi[/latex], and inverse FFT-effectively testing the model’s reliance on subtle, potentially illusory, correlations within the cosmological data.](https://arxiv.org/html/2602.16768v1/x8.png)
A new framework uses convolutional neural networks to extract richer information from weak lensing data, potentially unlocking more precise measurements of cosmological parameters.
![The study demonstrates a method for assessing the constraining power of a C3NN model by subjecting training maps to phase randomization within their Fourier transforms-a process involving Fast Fourier Transforms (FFT), uniform phase distribution between 0 and [latex]2\pi[/latex], and inverse FFT-effectively testing the model’s reliance on subtle, potentially illusory, correlations within the cosmological data.](https://arxiv.org/html/2602.16768v1/x8.png)
A new framework uses convolutional neural networks to extract richer information from weak lensing data, potentially unlocking more precise measurements of cosmological parameters.
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