Questions tagged [online-algorithms]

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View of Multiplicative Weights in contexts of combinatorial optimization, low-regret/online optimization, and entropy-regularized gradient descent?

Also called exponentiated gradient. I understand these are three places where multiplicative weights shows up (i.e. $w_{t+1} = w_{t}e^{- \text{loss}(w_{t})}$ or variations. And I understand a bit ...
• 745
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What are good set size estimation algorithms for small sets (around 10-50 elements)?

I'm trying to implement an online distinct counting algorithm, and I have thousands of small sets of 32 bit IP addresses whose sizes I want to estimate with high accuracy (1-5%). I came across quite ...
• 61
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Online triangle counting

Please consider the following problem. It can (but probably shouldn't) be called offline version of online triangle detection on subgraphs. Given a graph $G$ and a collection $C$ of subsets of ...
• 901
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Is there an online algorithm for solving any P-complete problem?

We can think of the class $NC$ as the class of problems that can be solved in parallel, whereas a $P$-complete problem probably has no parallel solution. My question is: where do online algorithms ...
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