(cosmology:) dark age, reionization, first star (cosmology:) dark ages, reionization, first stars 1 Cosmology 1 Cosmology observations 1 Data mining 1 Data set 1 Interferometers 1 Lower frequencies 1 Methods:statistical 1 Network-based framework 1 Neural networks 1 Power spectrum 1 Power-spectra 1 Radio interferometers 1 Reionization 1 Synthetic datasets 1 Thermal noise 1 cosmology: observations 1 methods: statistical 1