activity
20202026
most citedDoes deep learning model calibration improve performance in class-imbalanced medical image classification?

88 citations · 115 across the 14 of their papers we have counts for

collaborators

14 papers

cs.CV2026

Multi-task Cross-modal Learning for Chest X-ray Image Retrieval

Zhaohui Liang, Sivaramakrishnan Rajaraman, Niccolo Marini +2

CLIP and BiomedCLIP are examples of vision-language foundation models and offer strong cross-modal embeddings; however, they are not optimized for fine-grained medical retrieval ta…

cs.AI2025

Evaluating Strategies for Synthesizing Clinical Notes for Medical Multimodal AI

Niccolo Marini, Zhaohui Liang, Sivaramakrishnan Rajaraman +2

Multimodal (MM) learning is emerging as a promising paradigm in biomedical artificial intelligence (AI) applications, integrating complementary modality, which highlight different…

cs.CV2023

Uncovering the effects of model initialization on deep model generalization: A study with adult and pediatric Chest X-ray images

Sivaramakrishnan Rajaraman, Ghada Zamzmi, Feng Yang +3

Model initialization techniques are vital for improving the performance and reliability of deep learning models in medical computer vision applications. While much literature exist…

cs.CV2023

Semantically Redundant Training Data Removal and Deep Model Classification Performance: A Study with Chest X-rays

Sivaramakrishnan Rajaraman, Ghada Zamzmi, Feng Yang +3

Deep learning (DL) has demonstrated its innate capacity to independently learn hierarchical features from complex and multi-dimensional data. A common understanding is that its per…

eess.IV2023★ 1 cited

Does image resolution impact chest X-ray based fine-grained Tuberculosis-consistent lesion segmentation?

Sivaramakrishnan Rajaraman, Feng Yang, Ghada Zamzmi +2

Deep learning (DL) models are state-of-the-art in segmenting anatomical and disease regions of interest (ROIs) in medical images. Particularly, a large number of DL-based technique…

eess.IV2022

Generalizability of Deep Adult Lung Segmentation Models to the Pediatric Population: A Retrospective Study

Sivaramakrishnan Rajaraman, Feng Yang, Ghada Zamzmi +2

Lung segmentation in chest X-rays (CXRs) is an important prerequisite for improving the specificity of diagnoses of cardiopulmonary diseases in a clinical decision support system.…

eess.IV2022★ 1 cited

Deep ensemble learning for segmenting tuberculosis-consistent manifestations in chest radiographs

Sivaramakrishnan Rajaraman, Feng Yang, Ghada Zamzmi +3

Automated segmentation of tuberculosis (TB)-consistent lesions in chest X-rays (CXRs) using deep learning (DL) methods can help reduce radiologist effort, supplement clinical decis…

eess.IV2021★ 21 cited

A bone suppression model ensemble to improve COVID-19 detection in chest X-rays

Sivaramakrishnan Rajaraman, Gregg Cohen, Lillian Spear +2

Chest X-ray (CXR) is a widely performed radiology examination that helps to detect abnormalities in the tissues and organs in the thoracic cavity. Detecting pulmonary abnormalities…

cs.LG2021★ 88 cited

Does deep learning model calibration improve performance in class-imbalanced medical image classification?

Sivaramakrishnan Rajaraman, Prasanth Ganesan, Sameer Antani

In medical image classification tasks, it is common to find that the number of normal samples far exceeds the number of abnormal samples. In such class-imbalanced situations, relia…

eess.IV2021★ 1 cited

Multi-loss ensemble deep learning for chest X-ray classification

Sivaramakrishnan Rajaraman, Ghada Zamzmi, Sameer Antani

Medical images commonly exhibit multiple abnormalities. Predicting them requires multi-class classifiers whose training and desired reliable performance can be affected by a combin…

eess.IV2021★ 3 cited

Chest X-Ray Bone Suppression for Improving Classification of Tuberculosis-Consistent Findings

Sivaramakrishnan Rajaraman, Ghada Zamzmi, Les Folio +2

Chest X-rays are the most commonly performed diagnostic examination to detect cardiopulmonary abnormalities. However, the presence of bony structures such as ribs and clavicles can…

cs.CV2021

Improved Semantic Segmentation of Tuberculosis-consistent findings in Chest X-rays Using Augmented Training of Modality-specific U-Net Models with Weak Localizations

Sivaramakrishnan Rajaraman, Les Folio, Jane Dimperio +2

Deep learning (DL) has drawn tremendous attention in object localization and recognition for both natural and medical images. U-Net segmentation models have demonstrated superior p…

cs.CV2020

Unified Representation Learning for Efficient Medical Image Analysis

Ghada Zamzmi, Sivaramakrishnan Rajaraman, Sameer Antani

Medical image analysis typically includes several tasks such as enhancement, segmentation, and classification. Traditionally, these tasks are implemented using separate deep learni…

eess.IV2020

Iteratively Pruned Deep Learning Ensembles for COVID-19 Detection in Chest X-rays

Sivaramakrishnan Rajaraman, Jen Siegelman, Philip O. Alderson +3

We demonstrate use of iteratively pruned deep learning model ensembles for detecting pulmonary manifestation of COVID-19 with chest X-rays. This disease is caused by the novel Seve…