activity
19942023
most citedExperimental Tests of Factorization in Charmless Non-Leptonic Two-Body B Decays

482 citations · 1.5k across the 17 of their papers we have counts for

collaborators

17 papers

cs.SD2023

Speech collage: code-switched audio generation by collaging monolingual corpora

Amir Hussein, Dorsa Zeinali, Ondřej Klejch +6

Designing effective automatic speech recognition (ASR) systems for Code-Switching (CS) often depends on the availability of the transcribed CS resources. To address data scarcity,…

cs.CL2023

L1-aware Multilingual Mispronunciation Detection Framework

Yassine El Kheir, Shammur Absar Chowdhury, Ahmed Ali

The phonological discrepancies between a speaker's native (L1) and the non-native language (L2) serves as a major factor for mispronunciation. This paper introduces a novel multili…

cs.CL2023★ 1 cited

The complementary roles of non-verbal cues for Robust Pronunciation Assessment

Yassine El Kheir, Shammur Absar Chowdhury, Ahmed Ali

Research on pronunciation assessment systems focuses on utilizing phonetic and phonological aspects of non-native (L2) speech, often neglecting the rich layer of information hidden…

eess.AS2023

MyVoice: Arabic Speech Resource Collaboration Platform

Yousseif Elshahawy, Yassine El Kheir, Shammur Absar Chowdhury +1

We introduce MyVoice, a crowdsourcing platform designed to collect Arabic speech to enhance dialectal speech technologies. This platform offers an opportunity to design large diale…

cs.SD2023

Multi-View Multi-Task Representation Learning for Mispronunciation Detection

Yassine El Kheir, Shammur Absar Chowdhury, Ahmed Ali

The disparity in phonology between learner's native (L1) and target (L2) language poses a significant challenge for mispronunciation detection and diagnosis (MDD) systems. This cha…

cs.CL2023

Multilingual Word Error Rate Estimation: e-WER3

Shammur Absar Chowdhury, Ahmed Ali

The success of the multilingual automatic speech recognition systems empowered many voice-driven applications. However, measuring the performance of such systems remains a major ch…

cs.CL2021★ 1 cited

Balanced End-to-End Monolingual pre-training for Low-Resourced Indic Languages Code-Switching Speech Recognition

Amir Hussein, Shammur Chowdhury, Najim Dehak +1

The success in designing Code-Switching (CS) ASR often depends on the availability of the transcribed CS resources. Such dependency harms the development of ASR in low-resourced la…

cs.CL2021

Towards One Model to Rule All: Multilingual Strategy for Dialectal Code-Switching Arabic ASR

Shammur Absar Chowdhury, Amir Hussein, Ahmed Abdelali +1

With the advent of globalization, there is an increasing demand for multilingual automatic speech recognition (ASR), handling language and dialectal variation of spoken content. Re…

eess.AS2018

Domain Attentive Fusion for End-to-end Dialect Identification with Unknown Target Domain

Suwon Shon, Ahmed Ali, James Glass

End-to-end deep learning language or dialect identification systems operate on the spectrogram or other acoustic feature and directly generate identification scores for each class.…

cs.SD2018★ 10 cited

Convolutional Neural Networks and Language Embeddings for End-to-End Dialect Recognition

Suwon Shon, Ahmed Ali, James Glass

Dialect identification (DID) is a special case of general language identification (LID), but a more challenging problem due to the linguistic similarity between dialects. In this p…

hep-ph2010★ 38 cited

Jets and QCD: A Historical Review of the Discovery of the Quark and Gluon Jets and its Impact on QCD

Ahmed Ali, Gustav Kramer

The observation of quark and gluon jets has played a crucial role in establishing Quantum Chromodynamics [QCD] as the theory of the strong interactions within the Standard Model of…

hep-ph2004★ 51 cited

Implication of the Branching Ratios for the CKM Phenomenology

A. Ali, E. Lunghi, A. Ya. Parkhomenko

We study the implication of the recent measurement by the BELLE collaboration of the averaged branching fraction $\bar B_{exp} [B \to (ρ, ω) γ] = (1.8^{+0.6}_{-0.5} \pm 0.1) \times…

hep-ph1999★ 439 cited

A Comparative Study of the Decays in Standard Model and Supersymmetric Theories

A. Ali, Patricia Ball, L. T. Handoko +1

Using improved theoretical calculations of the decay form factors in the Light Cone-QCD sum rule approach, we investigate the decay rates, dilepton invariant mass spectra and the f…

hep-ph1998★ 482 cited

Experimental Tests of Factorization in Charmless Non-Leptonic Two-Body B Decays

A. Ali, G. Kramer, C. D. Lu

Using a theoretical framework based on the next-to-leading order QCD-improved effective Hamiltonian and a factorization Ansatz for the hadronic matrix elements of the four-quark op…

hep-ph1995★ 150 cited

Photon Energy Spectrum in and Comparison with Data

A. Ali, C. Greub

A comparison of the inclusive photon energy spectrum in the radiative decay $\BGAMAXS$, measured recently by the CLEO collaboration, with the standard model is presented, using a $…

hep-ph1994★ 142 cited

Towards a Model Independent Analysis of Rare Decays

Ahmed Ali, Gian Giudice, Thomas Mannel

We propose to undertake a model-independent analysis of the inclusive decay rates and distributions in the processes \bgamaxs~ and \Bsell ~( or ). We show how measu…

hep-ph1994★ 142 cited

Towards a Model-Independent Analysis of Rare Decays

A. Ali, G. F. Giudice, T. Mannel

Motivated by the experimental accessibility of rare decays in the ongoing and planned experiments, we propose to undertake a model-independent analysis of the inclusive decay r…