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Found 29 papers, 4 papers with code
Optimizing Model Selection for Compound AI Systems
We propose LLMSelector, an efficient framework for model selection in compound systems, which leverages two key empirical insights: (i) end-to-end performance is often monotonic in how well each module performs, with all other modules held fixed, and (ii) per-module performance can be estimated accurately by an LLM.
Unintentional Unalignment: Likelihood Displacement in Direct Preference Optimization
Direct Preference Optimization (DPO) and its variants are increasingly used for aligning language models with human preferences.
Networks of Networks: Complexity Class Principles Applied to Compound AI Systems Design
This work aims to inform future research and practice in the design of compound AI systems.
Bayesian Inference with Deep Weakly Nonlinear Networks
In the restricted case of deep linear networks ($\psi=0$) and noisy data, we show a simple data model for which evidence and generalization error are optimal at zero temperature.
Are More LLM Calls All You Need? Towards Scaling Laws of Compound Inference Systems
Many recent state-of-the-art results in language tasks were achieved using compound systems that perform multiple Language Model (LM) calls and aggregate their responses.
Principled Architecture-aware Scaling of Hyperparameters
However, most designs or optimization methods are agnostic to the choice of network structures, and thus largely ignore the impact of neural architectures on hyperparameters.
Depthwise Hyperparameter Transfer in Residual Networks: Dynamics and Scaling Limit
We provide experiments demonstrating that residual architectures including convolutional ResNets and Vision Transformers trained with this parameterization exhibit transfer of optimal hyperparameters across width and depth on CIFAR-10 and ImageNet.
Les Houches Lectures on Deep Learning at Large & Infinite Width
These lectures, presented at the 2022 Les Houches Summer School on Statistical Physics and Machine Learning, focus on the infinite-width limit and large-width regime of deep neural networks.
Quantitative CLTs in Deep Neural Networks
We study the distribution of a fully connected neural network with random Gaussian weights and biases in which the hidden layer widths are proportional to a large constant $n$.
Principles for Initialization and Architecture Selection in Graph Neural Networks with ReLU Activations
We then prove that using residual aggregation operators, obtained by interpolating a fixed aggregation operator with the identity, provably alleviates oversmoothing at initialization.
Depth Dependence of $μ$P Learning Rates in ReLU MLPs
In this short note we consider random fully connected ReLU networks of width $n$ and depth $L$ equipped with a mean-field weight initialization.
Bayesian Interpolation with Deep Linear Networks
For any training dataset, network depth, and hidden layer widths, we find non-asymptotic expressions for the predictive posterior and Bayesian model evidence in terms of Meijer-G functions, a class of meromorphic special functions of a single complex variable.
Maximal Initial Learning Rates in Deep ReLU Networks
Training a neural network requires choosing a suitable learning rate, which involves a trade-off between speed and effectiveness of convergence.
Deep Architecture Connectivity Matters for Its Convergence: A Fine-Grained Analysis
Advanced deep neural networks (DNNs), designed by either human or AutoML algorithms, are growing increasingly complex.
Random Fully Connected Neural Networks as Perturbatively Solvable Hierarchies
Moreover, we show that network cumulants form a perturbatively solvable hierarchy in powers of $1/n$ in that $k$-th order cumulants in one layer have recursions that depend to leading order in $1/n$ only on $j$-th order cumulants at the previous layer with $j\leq k$.
Ridgeless Interpolation with Shallow ReLU Networks in $1D$ is Nearest Neighbor Curvature Extrapolation and Provably Generalizes on Lipschitz Functions
If the curvature estimates at $x_i$ and $x_{i+1}$ have different signs, then $z(x;\theta)$ must be linear on $(x_i, x_{i+1})$.
Random Neural Networks in the Infinite Width Limit as Gaussian Processes
This article gives a new proof that fully connected neural networks with random weights and biases converge to Gaussian processes in the regime where the input dimension, output dimension, and depth are kept fixed, while the hidden layer widths tend to infinity.
The Principles of Deep Learning Theory
This book develops an effective theory approach to understanding deep neural networks of practical relevance.
Deep ReLU Networks Preserve Expected Length
Assessing the complexity of functions computed by a neural network helps us understand how the network will learn and generalize.
How Data Augmentation affects Optimization for Linear Regression
Our results apply to arbitrary augmentation schemes, revealing complex interactions between learning rates and augmentations even in the convex setting.
Data augmentation as stochastic optimization
We present a theoretical framework recasting data augmentation as stochastic optimization for a sequence of time-varying proxy losses.
Finite Depth and Width Corrections to the Neural Tangent Kernel
Moreover, we prove that for such deep and wide networks, the NTK has a non-trivial evolution during training by showing that the mean of its first SGD update is also exponential in the ratio of network depth to width.
Deep ReLU Networks Have Surprisingly Few Activation Patterns
The success of deep networks has been attributed in part to their expressivity: per parameter, deep networks can approximate a richer class of functions than shallow networks.
Complexity of Linear Regions in Deep Networks
It is well-known that the expressivity of a neural network depends on its architecture, with deeper networks expressing more complex functions.
Products of Many Large Random Matrices and Gradients in Deep Neural Networks
The fluctuations we find can be thought of as a finite temperature correction to the limit in which first the size and then the number of matrices tend to infinity.
How to Start Training: The Effect of Initialization and Architecture
We identify and study two common failure modes for early training in deep ReLU nets.
Which Neural Net Architectures Give Rise To Exploding and Vanishing Gradients?
We give a rigorous analysis of the statistical behavior of gradients in a randomly initialized fully connected network N with ReLU activations.
Approximating Continuous Functions by ReLU Nets of Minimal Width
Specifically, we answer the following question: for a fixed $d_{in}\geq 1,$ what is the minimal width $w$ so that neural nets with ReLU activations, input dimension $d_{in}$, hidden layer widths at most $w,$ and arbitrary depth can approximate any continuous, real-valued function of $d_{in}$ variables arbitrarily well?
Universal Function Approximation by Deep Neural Nets with Bounded Width and ReLU Activations
Our approach to this paper is based on the observation that, due to the convexity of the ReLU activation, ReLU nets are particularly well-suited for representing convex functions.
