You are given a string s consisting only of letters 'a' and 'b'. In a single step you can remove one palindromic subsequence from s. Return the minimum number of steps to make the given string empty.

A subsequence is an array that can be derived from another array by deleting some or no elements without changing the order of the remaining elements. A sequence seq is arithmetic if seq[i + 1] - ...

Abstract: This paper studies the problem of resilient distributed state estimation for sensor networks subject to location-varying Byzantine cyber-attacks, focusing on the cooperative estimation of a ...

Abstract: Outliers in multivariate sensor signals affect the performance of online change point detection (CPD) algorithms. Data pre-processing to eliminate outliers is a standard solution, but it may ...

*Important notice: This news reports on an unedited version of the paper which has been accepted. and is awaiting final editing. Scientific Reports sometimes publishes preliminary scientific reports ...