Search Results for author: Caleb Koch

Found 4 papers, 0 papers with code

Properly Learning Decision Trees with Queries Is NP-Hard

no code implementations9 Jul 2023 Caleb Koch, Carmen Strassle, Li-Yang Tan

We prove that it is NP-hard to properly PAC learn decision trees with queries, resolving a longstanding open problem in learning theory (Bshouty 1993; Guijarro-Lavin-Raghavan 1999; Mehta-Raghavan 2002; Feldman 2016).

Learning Theory

Superpolynomial Lower Bounds for Decision Tree Learning and Testing

no code implementations12 Oct 2022 Caleb Koch, Carmen Strassle, Li-Yang Tan

We establish new hardness results for decision tree optimization problems, adding to a line of work that dates back to Hyafil and Rivest in 1976.

PAC learning

A Query-Optimal Algorithm for Finding Counterfactuals

no code implementations14 Jul 2022 Guy Blanc, Caleb Koch, Jane Lange, Li-Yang Tan

Here $S(f)$ is the sensitivity of $f$, a discrete analogue of the Lipschitz constant, and $\Delta_f(x^\star)$ is the distance from $x^\star$ to its nearest counterfactuals.

counterfactual

Hyperprofile-based Computation Offloading for Mobile Edge Networks

no code implementations28 Jul 2017 Andrew Crutcher, Caleb Koch, Kyle Coleman, Jon Patman, Flavio Esposito, Prasad Calyam

We compute features for a "hyperprofile" and position nodes based on the predicted costs of offloading a particular task.

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