Search Results for author: He Jia

Found 6 papers, 3 papers with code

Simulation-Based Inference with Quantile Regression

1 code implementation4 Jan 2024 He Jia

We present Neural Quantile Estimation (NQE), a novel Simulation-Based Inference (SBI) method based on conditional quantile regression.

regression

Beyond Moments: Robustly Learning Affine Transformations with Asymptotically Optimal Error

no code implementations23 Feb 2023 He Jia, Pravesh K . Kothari, Santosh S. Vempala

We present a polynomial-time algorithm for robustly learning an unknown affine transformation of the standard hypercube from samples, an important and well-studied setting for independent component analysis (ICA).

Galaxy Spin Classification I: Z-wise vs S-wise Spirals With Chirality Equivariant Residual Network

1 code implementation9 Oct 2022 He Jia, Hong-Ming Zhu, Ue-Li Pen

The angular momentum of galaxies (galaxy spin) contains rich information about the initial condition of the Universe, yet it is challenging to efficiently measure the spin direction for the tremendous amount of galaxies that are being mapped by the ongoing and forthcoming cosmological surveys.

Data Augmentation

Robustly Learning Mixtures of $k$ Arbitrary Gaussians

no code implementations3 Dec 2020 Ainesh Bakshi, Ilias Diakonikolas, He Jia, Daniel M. Kane, Pravesh K. Kothari, Santosh S. Vempala

We give a polynomial-time algorithm for the problem of robustly estimating a mixture of $k$ arbitrary Gaussians in $\mathbb{R}^d$, for any fixed $k$, in the presence of a constant fraction of arbitrary corruptions.

Clustering Tensor Decomposition

Normalizing Constant Estimation with Gaussianized Bridge Sampling

1 code implementation pproximateinference AABI Symposium 2019 He Jia, Uroš Seljak

Normalizing constant (also called partition function, Bayesian evidence, or marginal likelihood) is one of the central goals of Bayesian inference, yet most of the existing methods are both expensive and inaccurate.

Bayesian Inference

Robustly Clustering a Mixture of Gaussians

no code implementations26 Nov 2019 He Jia, Santosh Vempala

We give an efficient algorithm for robustly clustering of a mixture of two arbitrary Gaussians, a central open problem in the theory of computationally efficient robust estimation, assuming only that the the means of the component Gaussians are well-separated or their covariances are well-separated.

Clustering Position

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