Search Results for author: Spandan Senapati

Found 3 papers, 1 papers with code

Optimal Multiclass U-Calibration Error and Beyond

no code implementations28 May 2024 Haipeng Luo, Spandan Senapati, Vatsal Sharan

We consider the problem of online multiclass U-calibration, where a forecaster aims to make sequential distributional predictions over $K$ classes with low U-calibration error, that is, low regret with respect to all bounded proper losses simultaneously.

Online Convex Optimization with Switching Cost and Delayed Gradients

no code implementations18 Oct 2023 Spandan Senapati, Rahul Vaze

In addition, we show that the competitive ratio of any online algorithm is $\max\{\Omega(L), \Omega(\frac{L}{\sqrt{\mu}})\}$ in the limited information setting when the switching cost is quadratic.

Sharpened Lazy Incremental Quasi-Newton Method

1 code implementation26 May 2023 Aakash Lahoti, Spandan Senapati, Ketan Rajawat, Alec Koppel

Specifically, they exhibit a superlinear rate with $O(d^2)$ cost in contrast to the linear rate of first-order methods with $O(d)$ cost and the quadratic rate of second-order methods with $O(d^3)$ cost.

Second-order methods

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