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Christian Walder

15 accepted papers

2025

3D-Prover: Diversity Driven Theorem Proving With Determinantal Point Processes

NeurIPS 2025poster

A key challenge in automated formal reasoning is the intractable search space, which grows exponentially with the depth of the proof. This branching is caused by the large number of candidate proof tactics which can be applied to a given goal. Nonetheless, many of these tactics are semantically simi…

Cited by 0SourcecodeScholar
2024

BAIT: Benchmarking (Embedding) Architectures for Interactive Theorem-Proving

AAAI 2024technical

Artificial Intelligence for Theorem Proving (AITP) has given rise to a plethora of benchmarks and methodologies, particularly in Interactive Theorem Proving (ITP). Research in the area is fragmented, with a diverse set of approaches being spread across several ITP systems. This presents a significan…

2024

Latent Optimal Paths by Gumbel Propagation for Variational Bayesian Dynamic Programming

ICML 2024poster

We propose the stochastic optimal path which solves the classical optimal path problem by a probability-softening solution. This unified approach transforms a wide range of DP problems into directed acyclic graphs in which all paths follow a Gibbs distribution. We show the equivalence of the Gibbs d…

2024

SoundLoCD: An Efficient Conditional Discrete Contrastive Latent Diffusion Model for Text-to-Sound Generation

ICASSP 2024accepted

We present SoundLoCD, a novel text-to-sound generation framework, which incorporates a LoRA-based conditional discrete contrastive latent diffusion model. Unlike recent large-scale sound generation models, our model can be efficiently trained under limited computational resources. The integration of…

Cited by 0SourceScholar
2023

LegendreTron: Uprising Proper Multiclass Loss Learning

ICML 2023poster

Loss functions serve as the foundation of supervised learning and are often chosen prior to model development. To avoid potentially ad hoc choices of losses, statistical decision theory describes a desirable property for losses known as *properness*, which asserts that Bayes' rule is optimal. Recent…

Cited by 0SourcePDFScholar
2023

R-U-SURE? Uncertainty-Aware Code Suggestions By Maximizing Utility Across Random User Intents

ICML 2023poster

Large language models show impressive results at predicting structured text such as code, but also commonly introduce errors and hallucinations in their output. When used to assist software developers, these models may make mistakes that users must go back and fix, or worse, introduce subtle bugs th…

2022

EditVAE: Unsupervised Parts-Aware Controllable 3D Point Cloud Shape Generation

AAAI 2022technical

This paper tackles the problem of parts-aware point cloud generation. Unlike existing works which require the point cloud to be segmented into parts a priori, our parts-aware editing and generation are performed in an unsupervised manner. We achieve this with a simple modification of the Variational…

Cited by 38SourcePDFScholar
2021

TacticZero: Learning to Prove Theorems from Scratch with Deep Reinforcement Learning

NeurIPS 2021poster

We propose a novel approach to interactive theorem-proving (ITP) using deep reinforcement learning. The proposed framework is able to learn proof search strategies as well as tactic and arguments prediction in an end-to-end manner. We formulate the process of ITP as a Markov decision process (MDP) i…

Cited by 48SourcePDFScholar
2020

Quantile Propagation for Wasserstein-Approximate Gaussian Processes

NeurIPS 2020poster

Approximate inference techniques are the cornerstone of probabilistic methods based on Gaussian process priors. Despite this, most work approximately optimizes standard divergence measures such as the Kullback-Leibler (KL) divergence, which lack the basic desiderata for the task at hand, while chief…

2019

Monge blunts Bayes: Hardness Results for Adversarial Training

ICML 2019oral

The last few years have seen a staggering number of empirical studies of the robustness of neural networks in a model of adversarial perturbations of their inputs. Most rely on an adversary which carries out local modifications within prescribed balls. None however has so far questioned the broader…

Cited by 21SourcePDFScholar