User profiles for P. Valiant

Paul Valiant

Associate Professor of Computer Science, Purdue University
Verified email at purdue.edu
Cited by 2787

An automatic inequality prover and instance optimal identity testing

G Valiant, P Valiant - SIAM Journal on Computing, 2017 - SIAM
… c, c and a function f(p, ϵ) on the known distribution p and error parameter ϵ, such that our
tester distinguishes p = q from p − q1 ≥ ϵ using f(p, ϵ) samples with success probability > 2/3, …

Testing symmetric properties of distributions

P Valiant - Proceedings of the fortieth annual ACM symposium on …, 2008 - dl.acm.org
… tions p+, p− that satisfy this indistinguishability condition and where π(p+) is large yet π(p−)
is … shows how we may slightly modify p+, p− into a pair p+, p− whose moments match each …

The power of linear estimators

G Valiant, P Valiant - 2011 IEEE 52nd Annual Symposium on …, 2011 - ieeexplore.ieee.org
𝑃 𝑜𝑖(𝑘) is closely concentrated around 𝑘, we may often easily replace 𝑘-sample testing with
𝑃 … We now consider the distribution of the 𝑖th entry of a 𝑃 𝑜𝑖(𝑘)-sample fingerprint, ℱ(𝑖). …

Estimating the unseen: improved estimators for entropy and other properties

G Valiant, P Valiant - Journal of the ACM (JACM), 2017 - dl.acm.org
We show that a class of statistical properties of distributions, which includes such practically
relevant properties as entropy, the number of distinct elements, and distance metrics …

Estimating the unseen: an n/log (n)-sample estimator for entropy and support size, shown optimal via new CLTs

G Valiant, P Valiant - Proceedings of the forty-third annual ACM …, 2011 - dl.acm.org
… This bound of log k 8k ensures that we will almost never see any element of p + or p − more
than log k times; that is, the portion of the fingerprint below m “captures the whole story”. How…

Optimal algorithms for testing closeness of discrete distributions

SO Chan, I Diakonikolas, P Valiant, G Valiant - … of the twenty-fifth annual ACM …, 2014 - SIAM
… More precisely, given samples from two distributions p and q over an n-element set, we wish
to distinguish whether p = q versus p is at least ε-far from q, in either l1 or l2 distance. Batu …

Incrementally verifiable computation or proofs of knowledge imply time/space efficiency

P Valiant - Theory of Cryptography: Fifth Theory of Cryptography …, 2008 - Springer
… Assume we have a machine P that outputs deceptive pairs (x = (M,s1,s3),p ) for Ti+1 with …
We note that our extractor runs logarithmic factor slower than P . Since the running time of P is …

Implicit regularization for deep neural networks driven by an ornstein-uhlenbeck like process

…, N Gupta, G Valiant, P Valiant - Conference on learning …, 2020 - proceedings.mlr.press
We consider networks, trained via stochastic gradient descent to minimize $\ell_2 $ loss, with
the training labels perturbed by independent noise at each iteration. We characterize the …

Instance optimal learning of discrete distributions

G Valiant, P Valiant - Proceedings of the forty-eighth annual ACM …, 2016 - dl.acm.org
… a distribution p, our algorithm returns a labelled vector whose expected distance from p is …
true unlabeled vector of probabilities of distribution p and simply needs to assign labels—up …

[PDF][PDF] A CLT and tight lower bounds for estimating entropy

G Valiant, P Valiant - Electronic Colloquium on Computational …, 2010 - cs.purdue.edu
We prove two new multivariate central limit theorems; the first relates the sum of independent
distributions to the multivariate Gaussian of corresponding mean and covariance, under …