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Muhammad J. Amjad

dblp:208/0867 · also Muhammad Jehangir Amjad · DBLP profile ↗
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3ranked-venue papers
1as first author
2since 2021 · last 2022
—ORCID · none

Domains — the database's venue-derived domains; a paper can count in several

Computer networks · 2 · 2 since 2021Artificial intelligence and machine learning · 1 · 1 first-author

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Computer architecture, parallel and distributed computing, and storage systems
1 paper
Cloud and datacenter computing · 50% Distributed systems · 50%
Artificial intelligence
1 paper
Probabilistic and Bayesian machine learning · 67% Learning theory · 33%
Interdisciplinary, comprehensive, and emerging computing
1 paper
Computational social science and digital humanities · 100%

Topics — the 4 heaviest of 6, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Cloud and datacenter computing
cloud service management
0.612022
CloudCluster: Unearthing the Functional Structure of a Cloud Service · NSDI 2022
Machine learning › Probabilistic and Bayesian machine learning
causal inference
0.312018
Robust Synthetic Control · J. Mach. Learn. Res. 2018
Machine learning › Learning theory
matrix completion
0.312018
Robust Synthetic Control · J. Mach. Learn. Res. 2018
Machine learning › Probabilistic and Bayesian machine learning › causal inference
synthetic control
0.312018
Robust Synthetic Control · J. Mach. Learn. Res. 2018

Methods — techniques the papers use, named apart from their topics

singular value thresholding · 0.7latent variable model · 0.7bayesian uncertainty quantification · 0.7
YearPublicationVenuePosition
2022 CloudCluster: Unearthing the Functional Structure of a Cloud Service
Weiwu Pang, Sourav Panda, Muhammad J. Amjad, Christophe Diot, Ramesh Govindan
NSDI3
2022 Optimal probing with statistical guarantees for network monitoring at scale
Branislav Kveton, Muhammad J. Amjad, Christophe Diot, Dimitris Konomis, Augustin Soule
Comput. Commun.2
2018 Robust Synthetic Control
abstract
We present a robust generalization of the synthetic control method for comparative case studies. Like the classical method cf. \cite{abadie3}, we present an algorithm to estimate the unobservable counterfactual of a treatment unit. A distinguishing feature of our algorithm is that of de-noising the data matrix via singular value thresholding, which renders our approach robust in multiple facets: it automatically identifies a good subset of donors for the synthetic control, overcomes the challenges of missing data, and continues to work well in settings where covariate information may not be provided. We posit that the setting can be viewed as an instance of the Latent Variable Model and provide the first finite sample analysis (coupled with asymptotic results) for the estimation of the counterfactual. Our algorithm accurately imputes missing entries and filters corrupted observations in producing a consistent estimator of the underlying signal matrix, provided $p = \Omega( T^{-1 + \zeta})$ for some $\zeta > 0$; here, $p$ is the fraction of observed data and $T$ is the time interval of interest. Under the same proportion of observations, we demonstrate that the mean-squared error in our counterfactual estimation scales as $\mathcal{O}(\sigma^2/p + 1/\sqrt{T})$, where $\sigma^2$ is the variance of the inherent noise. Additionally, we introduce a Bayesian framework to quantify the estimation uncertainty. Our experiments, using both synthetic and real-world datasets, demonstrate that our robust generalization yields an improvement over the classical synthetic control method.
Muhammad J. Amjad, Devavrat Shah, Dennis Shen
J. Mach. Learn. Res.1