3 papers · 1 filter
Barely Monotone (min,+)-Convolution in Truly Subquadratic Time
MohammadTaghi Hajiaghayi, Danny Mittal, Saeed Seddighin
The (min,+)-convolution of two sequences A and B of length n is the sequence C with C[k] = min_{i+j=k} (A[i]+B[j]). For bounded inputs, whose entries are integers in {0,...,O(n)},…
Matroid Algorithms Under Size-Sensitive Independence Oracles
Kiarash Banihashem, MohammadTaghi Hajiaghayi, Mahdi JafariRaviz +1
The standard oracle model for matroid algorithms assumes that each independence query can be answered in constant time, regardless of the size of the queried set. While this abstra…
Beating Competitive Ratio 4 for Graphic Matroid Secretary
Kiarash Banihashem, MohammadTaghi Hajiaghayi, Dariusz R. Kowalski +3
One of the classic problems in online decision-making is the *secretary problem* where to goal is to maximize the probability of choosing the largest number from a randomly ordered…