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Benjamin van Niekerk

3 accepted papers

2025

Unsupervised Word Discovery: Boundary Detection with Clustering vs. Dynamic Programming

ICASSP 2025accepted

We look at the long-standing problem of segmenting unlabeled speech into word-like segments and clustering these into a lexicon. Several previous methods use a scoring model coupled with dynamic programming to find an optimal segmentation. Here we propose a much simpler strategy: we predict word bou…

Cited by 0Source ↗Scholar ↗
2022

A Comparison of Discrete and Soft Speech Units for Improved Voice Conversion

ICASSP 2022accepted

The goal of voice conversion is to transform source speech into a target voice, keeping the content unchanged. In this paper, we focus on self-supervised representation learning for voice conversion. Specifically, we compare discrete and soft speech units as input features. We find that discrete rep…

Cited by 0Source ↗Scholar ↗
2019

Composing Value Functions in Reinforcement Learning

ICML 2019oral

An important property for lifelong-learning agents is the ability to combine existing skills to solve new unseen tasks. In general, however, it is unclear how to compose existing skills in a principled manner. Under the assumption of deterministic dynamics, we prove that optimal value function compo…

Cited by 63Source ↗PDF ↗Scholar ↗