Search Results for author: Ali Javed

Found 4 papers, 0 papers with code

SOMTimeS: Self Organizing Maps for Time Series Clustering and its Application to Serious Illness Conversations

no code implementations26 Aug 2021 Ali Javed, Donna M. Rizzo, Byung Suk Lee, Robert Gramling

We showed that for similar accuracy, the speed-up achieved for SOMTimeS and K-means was 1. 8x on average; however, rates varied between 1x and 18x depending on the dataset.

Clustering Dynamic Time Warping +2

Deepfakes Generation and Detection: State-of-the-art, open challenges, countermeasures, and way forward

no code implementations25 Feb 2021 Momina Masood, Marriam Nawaz, Khalid Mahmood Malik, Ali Javed, Aun Irtaza

Easy access to audio-visual content on social media, combined with the availability of modern tools such as Tensorflow or Keras, open-source trained models, and economical computing infrastructure, and the rapid evolution of deep-learning (DL) methods, especially Generative Adversarial Networks (GAN), have made it possible to generate deepfakes to disseminate disinformation, revenge porn, financial frauds, hoaxes, and to disrupt government functioning.

DeepFake Detection Face Swapping

A Benchmark Study on Time Series Clustering

no code implementations20 Apr 2020 Ali Javed, Byung Suk Lee, Dona M. Rizzo

This paper presents the first time series clustering benchmark utilizing all time series datasets currently available in the University of California Riverside (UCR) archive -- the state of the art repository of time series data.

Clustering Dynamic Time Warping +2

Analysis of Hydrological and Suspended Sediment Events from Mad River Watershed using Multivariate Time Series Clustering

no code implementations28 Nov 2019 Ali Javed, Scott D. Hamshaw, Donna M. Rizzo, Byung Suk Lee

Additionally, using available meteorological data associated with storm events, we examine the characteristics of computational clusters of storm events in the study watersheds and identify the features driving the clustering approach.

Clustering Time Series +1

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