How Selection Mechanisms Transform State Space Models

Written by serialization | Published 2024/12/15
Tech Story Tags: deep-learning | transformer-architecture | mamba-model | ai-sequence-modeling | genomics-ai-solutions | latent-state-ai-models | hyena-architecture | tensor-shape-in-ai-algorithms

TLDR Selective mechanisms enhance State Space Models (SSMs) by introducing input-dependent parameters, transitioning them from time-invariant to time-varying systems. This allows SSMs to efficiently process tasks requiring content-aware dynamics, like Selective Copying and associative recall, though with trade-offs in efficiency.via the TL;DR App

Authors:

(1) Albert Gu, Machine Learning Department, Carnegie Mellon University and with equal contribution;

(2) Tri Dao, Department of Computer Science, Princeton University and with equal contribution.

Table of Links

Abstract and 1 Introduction

2 State Space Models

3 Selective State Space Models and 3.1 Motivation: Selection as a Means of Compression

3.2 Improving SSMs with Selection

3.3 Efficient Implementation of Selective SSMs

3.4 A Simplified SSM Architecture

3.5 Properties of Selection Mechanisms

3.6 Additional Model Details

4 Empirical Evaluation and 4.1 Synthetic Tasks

4.2 Language Modeling

4.3 DNA Modeling

4.4 Audio Modeling and Generation

4.5 Speed and Memory Benchmarks

4.6 Model Ablations

5 Discussion

6 Conclusion and References

A Discussion: Selection Mechanism

B Related Work

C Mechanics of Selective SSMs

D Hardware-aware Algorithm For Selective SSMs

E Experimental Details and Additional Results

3.2 Improving SSMs with Selection

One method of incorporating a selection mechanism into models is by letting their parameters that affect interactions along the sequence (e.g. the recurrent dynamics of an RNN or the convolution kernel of a CNN) be input-dependent.

This paper is available on arxiv under CC BY 4.0 DEED license.


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Published by HackerNoon on 2024/12/15