Clustered integer 3SUM via additive combinatorics

TM Chan, M Lewenstein - Proceedings of the forty-seventh annual ACM …, 2015 - dl.acm.org
We present a collection of new results on problems related to 3SUM, including: The first truly
subquadratic algorithm for computing the (min,+) convolution for monotone increasing …

On hardness of jumbled indexing

A Amir, TM Chan, M Lewenstein… - … Colloquium on Automata …, 2014 - Springer
Jumbled indexing is the problem of indexing a text T for queries that ask whether there is a
substring of T matching a pattern represented as a Parikh vector, ie, the vector of frequency …

On approximate jumbled pattern matching in strings

P Burcsi, F Cicalese, G Fici, Z Lipták - Theory of Computing Systems, 2012 - Springer
Given a string s, the Parikh vector of s, denoted p (s), counts the multiplicity of each character
in s. Searching for a match of a Parikh vector q in the text s requires finding a substring t of s …

Efficient indexes for jumbled pattern matching with constant-sized alphabet

T Kociumaka, J Radoszewski, W Rytter - European Symposium on …, 2013 - Springer
We introduce efficient data structures for an indexing problem in non-standard stringology—
jumbled pattern matching. Moosa and Rahman J. Discr. Alg., 2012 gave an index for …

How hard is it to find (honest) witnesses?

I Goldstein, T Kopelowitz, M Lewenstein… - arXiv preprint arXiv …, 2017 - arxiv.org
In recent years much effort was put into developing polynomial-time conditional lower
bounds for algorithms and data structures in both static and dynamic settings. Along these …

[HTML][HTML] On prefix normal words and prefix normal forms

P Burcsi, G Fici, Z Lipták, F Ruskey… - Theoretical Computer …, 2017 - Elsevier
A 1-prefix normal word is a binary word with the property that no factor has more 1s than the
prefix of the same length; a 0-prefix normal word is defined analogously. These words arise …

On prefix normal words

G Fici, Z Lipták - Developments in Language Theory: 15th International …, 2011 - Springer
We present a new class of binary words: the prefix normal words. They are defined by the
property that for any given length k, no factor of length k has more a's than the prefix of the …

Binary jumbled string matching for highly run-length compressible texts

G Badkobeh, G Fici, S Kroon, Z Lipták - Information Processing Letters, 2013 - Elsevier
The Binary Jumbled String Matching Problem is defined as follows: Given a string s over {a,
b} of length n and a query (x, y), with x, y non-negative integers, decide whether s has a …

[HTML][HTML] Algorithms for jumbled indexing, jumbled border and jumbled square on run-length encoded strings

A Amir, A Apostolico, T Hirst, GM Landau… - Theoretical Computer …, 2016 - Elsevier
In this paper we investigate jumbled (Abelian) versions of three classical strings problems. In
all these problems we assume the input string S [1.. n] is given in its run-length format S′[1 …

On lower bounds for the maximum consecutive subsums problem and the (min,+)-convolution

ES Laber, W Bardales… - 2014 IEEE International …, 2014 - ieeexplore.ieee.org
Given a sequence of n numbers, the MAXIMUM CONSECUTIVE SUBSUMS PROBLEM
(MCSP) asks for the maximum consecutive sum of lengths ℓ for each ℓ= 1,…, n. No algorithm …