Search Results for author: Ram Sriharsha

Found 4 papers, 0 papers with code

Online Changepoint Detection on a Budget

no code implementations11 Jan 2022 Zhaohui Wang, Xiao Lin, Abhinav Mishra, Ram Sriharsha

In this paper, we are interested in changepoint detection algorithms which operate in an online setting in the sense that both its storage requirements and worst-case computational complexity per observation are independent of the number of previous observations.

OnlineSTL: Scaling Time Series Decomposition by 100x

no code implementations19 Jul 2021 Abhinav Mishra, Ram Sriharsha, Sichen Zhong

Decomposing a complex time series into trend, seasonality, and remainder components is an important primitive that facilitates time series anomaly detection, change point detection, and forecasting.

Anomaly Detection Change Point Detection +2

Efficient Algorithms for Estimating the Parameters of Mixed Linear Regression Models

no code implementations12 May 2021 Babak Barazandeh, Ali Ghafelebashi, Meisam Razaviyayn, Ram Sriharsha

When the additive noise in MLR model is Gaussian, Expectation-Maximization (EM) algorithm is a widely-used algorithm for maximum likelihood estimation of MLR parameters.

regression

An Algorithm for Online K-Means Clustering

no code implementations18 Dec 2014 Edo Liberty, Ram Sriharsha, Maxim Sviridenko

We also show that, experimentally, it is not much worse than k-means++ while operating in a strictly more constrained computational model.

Clustering

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