Search Results for author: Calton Pu

Found 20 papers, 5 papers with code

Continuously Reliable Detection of New-Normal Misinformation: Semantic Masking and Contrastive Smoothing in High-Density Latent Regions

no code implementations19 Jan 2023 Abhijit Suprem, Joao Eduardo Ferreira, Calton Pu

Toxic misinformation campaigns have caused significant societal harm, e. g., affecting elections and COVID-19 information awareness.

Misinformation

Time-Aware Datasets are Adaptive Knowledgebases for the New Normal

no code implementations22 Nov 2022 Abhijit Suprem, Sanjyot Vaidya, Joao Eduardo Ferreira, Calton Pu

Recent advances in text classification and knowledge capture in language models have relied on availability of large-scale text datasets.

Misinformation text-classification +1

ATEAM: Knowledge Integration from Federated Datasets for Vehicle Feature Extraction using Annotation Team of Experts

no code implementations16 Nov 2022 Abhijit Suprem, Purva Singh, Suma Cherkadi, Sanjyot Vaidya, Joao Eduardo Ferreira, Calton Pu

We evaluate ATEAM and KID for vehicle recognition problems and show that our integrated dataset can help off-the-shelf models achieve excellent accuracy on VMMR and vehicle re-id with no changes to model architectures.

EdnaML: A Declarative API and Framework for Reproducible Deep Learning

no code implementations13 Nov 2022 Abhijit Suprem, Sanjyot Vaidya, Avinash Venugopal, Joao Eduardo Ferreira, Calton Pu

We present several examples of ML pipelines with EdnaML, including a large-scale fake news labeling and classification system with six sub-pipelines managed by EdnaML.

Constructive Interpretability with CoLabel: Corroborative Integration, Complementary Features, and Collaborative Learning

no code implementations20 May 2022 Abhijit Suprem, Sanjyot Vaidya, Suma Cherkadi, Purva Singh, Joao Eduardo Ferreira, Calton Pu

CoLabel performs VMMR with a composite of interpretable features such as vehicle color, type, and make, all based on interpretable annotations of the ground truth labels.

Bias Detection

MiDAS: Multi-integrated Domain Adaptive Supervision for Fake News Detection

no code implementations19 May 2022 Abhijit Suprem, Calton Pu

Given a set of fake news models trained on multiple domains, we propose an adaptive decision module to select the best-fit model for a new sample.

Domain Adaptation Fake News Detection +2

Evaluating Generalizability of Fine-Tuned Models for Fake News Detection

1 code implementation15 May 2022 Abhijit Suprem, Calton Pu

However, on some subsets of unseen data that overlap with training data, models have higher accuracy.

Fake News Detection Misinformation

Challenges and Opportunities in Rapid Epidemic Information Propagation with Live Knowledge Aggregation from Social Media

no code implementations9 Nov 2020 Calton Pu, Abhijit Suprem, Rodrigo Alves Lima

We describe the EDNA/LITMUS tools that implement EBKA, integrating social media such as Twitter and Facebook with authoritative sources such as WHO and CDC, creating and updating live knowledge on the COVID-19 pandemic.

Misinformation

EDNA-COVID: A Large-Scale Covid-19 Dataset Collected with the EDNA Streaming Toolkit

1 code implementation6 Oct 2020 Abhijit Suprem, Calton Pu

To address this, we present (i) the EDNA streaming toolkit for consuming and processing streaming data, and (ii) EDNA-Covid, a multilingual, large-scale dataset of coronavirus-related tweets collected with EDNA since January 25, 2020.

Social and Information Networks

ODIN: Automated Drift Detection and Recovery in Video Analytics

no code implementations9 Sep 2020 Abhijit Suprem, Joy Arulraj, Calton Pu, Joao Ferreira

In this paper, we present a visual data analytics system, called ODIN, that automatically detects and recovers from drift.

Model Selection

Small, Accurate, and Fast Vehicle Re-ID on the Edge: the SAFR Approach

no code implementations24 Jan 2020 Abhijit Suprem, Calton Pu, Joao Eduardo Ferreira

We propose a Small, Accurate, and Fast Re-ID (SAFR) design for flexible vehicle re-id under a variety of compute environments such as cloud, mobile, edge, or embedded devices by only changing the re-id model backbone.

Model Compression

EventMapper: Detecting Real-World Physical Events Using Corroborative and Probabilistic Sources

1 code implementation23 Jan 2020 Abhijit Suprem, Calton Pu

EventMapper integrates high-latency, high-accuracy corroborative sources such as physical sensors with low-latency, noisy probabilistic sources such as social media streams to deliver real-time, global event recognition.

BIG-bench Machine Learning Event Detection +1

Robust, Extensible, and Fast: Teamed Classifiers for Vehicle Tracking and Vehicle Re-ID in Multi-Camera Networks

no code implementations9 Dec 2019 Abhijit Suprem, Rodrigo Alves Lima, Bruno Padilha, Joao Eduardo Ferreira, Calton Pu

Current frameworks for management are designed for multi-camera networks in a closed dataset environment where there is limited variability in cameras and characteristics of the surveillance environment are well known.

Attribute Management +4

Event Detection in Noisy Streaming Data with Combination of Corroborative and Probabilistic Sources

no code implementations21 Nov 2019 Abhijit Suprem, Calton Pu

The ubiquity of social networks and human sensors in the field provides a tremendous amount of real-time, live data about true physical events from around the world.

Event Detection

Concept Drift Adaptive Physical Event Detection for Social Media Streams

no code implementations17 Sep 2019 Abhijit Suprem, Aibek Musaev, Calton Pu

Our application has high performance: using classifiers trained in 2014, achieving event detection accuracy of 0. 988, compared to 0. 762 for static approaches.

BIG-bench Machine Learning Event Detection

ASSED -- A Framework for Identifying Physical Events through Adaptive Social Sensor Data Filtering

no code implementations17 Sep 2019 Abhijit Suprem, Calton Pu

Specifically, ASSED is a framework to support continuous filter generation and updates with machine learning using streaming data from high-confidence sources (physical and annotated sensors) and social networks.

Event Detection

Differentially Private Model Publishing for Deep Learning

no code implementations3 Apr 2019 Lei Yu, Ling Liu, Calton Pu, Mehmet Emre Gursoy, Stacey Truex

However, when the training datasets are crowdsourced from individuals and contain sensitive information, the model parameters may encode private information and bear the risks of privacy leakage.

A Comparative Measurement Study of Deep Learning as a Service Framework

1 code implementation29 Oct 2018 Yanzhao Wu, Ling Liu, Calton Pu, Wenqi Cao, Semih Sahin, Wenqi Wei, Qi Zhang

Big data powered Deep Learning (DL) and its applications have blossomed in recent years, fueled by three technological trends: a large amount of digitized data openly accessible, a growing number of DL software frameworks in open source and commercial markets, and a selection of affordable parallel computing hardware devices.

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