This paper provides a solution for robust speech detection that can be applied across a variety of tasks. The solution is based on an algorithm that performs non-parametric estimation of the background noise spectrum using minimum statistics of the smoothed short-time Fourier transform (STFT). It will be shown that the new algorithm can operate effectively under varying signal-to-noise ratios. ...

Language and channel variations are two important concerns currently affecting practical automatic language and speaker recognition performance. To address these challenges, a corpus of speech was collected from 100 bilingual speakers in each of three foreign languages (Arabic-English, KoreanEnglish, and Spanish-English). The recordings were made in highly controlled conditions using multiple m...

Roughly speaking, clustering evolving networks aims at detecting structurally dense subgroups in networks that evolve over time. This implies that the subgroups we seek for also evolve, which results in many additional tasks compared to clustering static networks. We discuss these additional tasks and difficulties resulting thereof and present an overview on current approaches to solve these pr...

A computational complexity gap, captured in the definition of one-way functions, is a necessary and sufficient condition for much of modern cryptography. Loosely speaking, one-way functions are functions that are easy to compute but hard to invert (in an average-case sense). The existence of one-way functions implies that P is different than NP , which means that such a complexity gap is only w...

This study presents results from sentence-completion and grammaticality-judgment tasks with 7 German-speaking agrammatic aphasics and 7 age-matched control subjects examining tense and subject-verb agreement marking. For both experimental tasks, we found that the aphasics achieved high correctness scores for agreement, while tense marking was severely impaired. To account for the observed tense...

We present a Chinese-speaking patient, SJ, who makes phonological errors across all tasks involving oral production. Detailed analyses of the errors across different tasks reveal that the patterns are very similar for reading, oral picture naming, and repetition tasks, which are also comparable to the error patterns of the phonological buffer deficit cases reported in the literature. The nature...

The objective of this study is to establish the effects of age, gender, and education and to provide preliminary normative data for letter and category fluency tasks in the Egyptian Arabic-speaking population. We evaluated 139 cognitively healthy volunteers aged 20-93 by adapting the letter and category verbal fluency tasks for the Egyptian population. On the letter fluency task, mean number of...