258 citations · 564 across the 11 of their papers we have counts for
12 papers
Which Similarity-Sensitive Entropy (Sentropy)?
Phuc Nguyen, Josiah Couch, Rahul Bansal +5
Shannon entropy is not the only entropy that is relevant to machine-learning datasets, nor possibly even the most important one. Traditional entropies such as Shannon entropy captu…
X-Factor: Quality Is a Dataset-Intrinsic Property
Josiah Couch, Miao Li, Rima Arnaout +1
In the universal quest to optimize machine-learning classifiers, three factors -- model architecture, dataset size, and class balance -- have been shown to influence test-time perf…
Beyond Size and Class Balance: Alpha as a New Dataset Quality Metric for Deep Learning
Josiah Couch, Rima Arnaout, Ramy Arnaout
In deep learning, achieving high performance on image classification tasks requires diverse training sets. However, the current best practice$\unicode{x2013}$maximizing dataset siz…
Scaling Monte-Carlo-Based Inference on Antibody and TCR Repertoires
Josiah Couch, Rohit Arora, Jasper Braun +5
Previously, it has been shown that maximum-entropy models of immune-repertoire sequence can be used to determine a person's vaccination status. However, this approach has the drawb…
One-half reflected entropy is not a lower bound for entanglement of purification
Josiah Couch, Phuc Nguyen, Sarah Racz +2
In recent work, Akers et al. proved that the entanglement of purification is bounded below by half of the -Rényi reflected entropy for all ,…
Circuit Complexity in Topological Quantum Field Theory
Josiah Couch, Yale Fan, Sanjit Shashi
Quantum circuit complexity has played a central role in recent advances in holography and many-body physics. Within quantum field theory, it has typically been studied in a Lorentz…
Complexity of Mixed States in QFT and Holography
Elena Caceres, Shira Chapman, Josiah D. Couch +3
We study the complexity of Gaussian mixed states in a free scalar field theory using the 'purification complexity'. The latter is defined as the lowest value of the circuit complex…
The Speed of Quantum Information Spreading in Chaotic Systems
Josiah Couch, Stefan Eccles, Phuc Nguyen +2
We present a general theory of quantum information propagation in chaotic quantum many-body systems. The generic expectation in such systems is that quantum information does not pr…
Holographic Purification Complexity
Elena Cáceres, Josiah Couch, Stefan Eccles +1
We study holographic subregion complexity, and its possible connection to purification complexity suggested recently by Agón et al. In particular, we study the conjecture that subr…
Holographic Complexity and Volume
Josiah Couch, Stefan Eccles, Ted Jacobson +1
The previously proposed "Complexity=Volume" or CV-duality is probed and developed in several directions. We show that the apparent lack of universality for large and small black ho…
Holographic complexity and non-commutative gauge theory
Josiah Couch, Stefan Eccles, Willy Fischler +1
We study the holographic complexity of noncommutative field theories. The four-dimensional noncommutative super Yang-Mills theory with Moyal algebra along two of th…
Noether charge, black hole volume, and complexity
Josiah Couch, Willy Fischler, Phuc H. Nguyen
In this paper, we study the physical significance of the thermodynamic volumes of AdS black holes using the Noether charge formalism of Iyer and Wald. After applying this formalism…