Ongoing and future galaxy surveys, e.g., DESI, Euclid, WFIRST, etc., are going to collect >100M galaxy redshifts and reach sub-percentage accuracy on the cosmological measurements, e.g., Baryon coustic Oscillation, growth rate of large-scale structure, etc. A robust methodology of extracting cosmological information from the galaxy sample is critical while reaching such precision. Our team has been working towards this goal in different aspects, e.g. reducing observation systematics, including statistics of voids, validating theoretical models, constructing covariance matrices, and avoiding informative priors. To this end, we will be able to measure cosmology parameters with an unbiased and precise way.
