On some fine-grained questions in algorithms and complexity

VV Williams - Proceedings of the international congress of …, 2018 - World Scientific
In recent years, a new “fine-grained” theory of computational hardness has been developed,
based on “fine-grained reductions” that focus on exact running times for problems …

Recent advances in fully dynamic graph algorithms–a quick reference guide

K Hanauer, M Henzinger, C Schulz - ACM Journal of Experimental …, 2022 - dl.acm.org
In recent years, significant advances have been made in the design and analysis of fully
dynamic algorithms. However, these theoretical results have received very little attention …

Edit distance cannot be computed in strongly subquadratic time (unless SETH is false)

A Backurs, P Indyk - Proceedings of the forty-seventh annual ACM …, 2015 - dl.acm.org
The edit distance (aka the Levenshtein distance) between two strings is defined as the
minimum number of insertions, deletions or substitutions of symbols needed to transform …

Unifying and strengthening hardness for dynamic problems via the online matrix-vector multiplication conjecture

M Henzinger, S Krinninger, D Nanongkai… - Proceedings of the forty …, 2015 - dl.acm.org
Consider the following Online Boolean Matrix-Vector Multiplication problem: We are given
an nxn matrix M and will receive n column-vectors of size n, denoted by v1,..., vn, one by …

[PDF][PDF] Computational problems in formal argumentation and their complexity

W Dvorák, PE Dunne - JOURNAL OF APPLIED LOGICS …, 2017 - livrepository.liverpool.ac.uk
Wolfgang Dvorák, Paul E. Dunne abstract. In this chapter we give an overview of the core
computational problems arising in formal argumentation together with a complexity analysis …

Tight hardness results for LCS and other sequence similarity measures

A Abboud, A Backurs… - 2015 IEEE 56th Annual …, 2015 - ieeexplore.ieee.org
Two important similarity measures between sequences are the longest common
subsequence (LCS) and the dynamic time war** distance (DTWD). The computations of …

Why walking the dog takes time: Frechet distance has no strongly subquadratic algorithms unless SETH fails

K Bringmann - 2014 IEEE 55th Annual Symposium on …, 2014 - ieeexplore.ieee.org
The Fréchet distance is a well-studied and very popular measure of similarity of two curves.
Many variants and extensions have been studied since Alt and Godau introduced this …

Quadratic conditional lower bounds for string problems and dynamic time war**

K Bringmann, M Künnemann - 2015 IEEE 56th Annual …, 2015 - ieeexplore.ieee.org
Classic similarity measures of strings are longest common subsequence and Levenshtein
distance (ie, The classic edit distance). A classic similarity measure of curves is dynamic …

Algorithm and hardness for dynamic attention maintenance in large language models

J Brand, Z Song, T Zhou - arxiv preprint arxiv:2304.02207, 2023 - arxiv.org
Large language models (LLMs) have made fundamental changes in human life. The
attention scheme is one of the key components over all the LLMs, such as BERT, GPT-1 …

Approximation and fixed parameter subquadratic algorithms for radius and diameter in sparse graphs

A Abboud, VV Williams, J Wang - Proceedings of the twenty-seventh annual …, 2016 - SIAM
The radius and diameter are fundamental graph parameters, with several natural definitions
for directed graphs. Each definition is well-motivated in a variety of applications. All versions …