activity
20222026
most citedMISO Wireless Localization in The Presence of Reconfigurable Intelligent Surface

3 citations · 6 across the 13 of their papers we have counts for

collaborators

15 papers

cs.CV2026

Kernel-Based Steering of CLIP with Vision-Language Model Preferences

Sajjad Ghiasvand, Haniyeh Ehsani Oskouie, Sina Mansouri +3

Large vision-language models (VLMs) can judge visual similarity, but their judgments are not directly available as compact image embeddings for efficient comparison. We study how t…

cs.CV2026

Low-Rank Prompt Learning for Vision-Language Models with Fixed-Token Bases

Tanvir Muntakim Tonoy, Sajjad Ghiasvand, Mahnoosh Alizadeh +1

Prompt learning adapts CLIP to downstream recognition by replacing hand-written templates with learned continuous context vectors, which in Context Optimization (CoOp) form a dense…

cs.CV2026

ZOMP: Zeroth-Order Multi-Modal Prompt Tuning for Vision-Language Models

Sajjad Ghiasvand, Yifan Yang, Mahnoosh Alizadeh +1

Prompt tuning adapts vision--language models with few trainable parameters, but computing their gradients still requires backpropagation through frozen encoders. We introduce ZOMP,…

cs.CL2026

GRASP: Reinforcing Language Model Anonymizers with Group Relative Policy Optimization

Sajjad Ghiasvand, Nader Sehatbakhsh

Large language models can infer sensitive personal attributes, such as age, location, and occupation, from ordinary text, turning everyday writing into a privacy risk. Adversarial…

cs.CL2026

Can MLLMs Critique Like Humans? Evaluating Open-Ended Aesthetic Reasoning in Multimodal Large Language Models

Sajjad Ghiasvand, Maryam Amirizaniani, Haniyeh Ehsani Oskouie +2

Open-ended aesthetic critique is a challenge for multimodal large language models (MLLMs): it has no single correct answer, and most aesthetic evaluation measures models against nu…

cs.LG2026

REALM: Reliable Expertise-Aware Language Model Fine-Tuning from Noisy Annotations

Sajjad Ghiasvand, Mark Beliaev, Mahnoosh Alizadeh +1

Supervised fine-tuning of large language models relies on human-annotated data, yet annotation pipelines routinely involve multiple crowdworkers of heterogeneous expertise. Standar…

cs.CV2026

MMLoP: Multi-Modal Low-Rank Prompting for Efficient Vision-Language Adaptation

Sajjad Ghiasvand, Haniyeh Ehsani Oskouie, Mahnoosh Alizadeh +1

Prompt learning has become a dominant paradigm for adapting vision-language models (VLMs) such as CLIP to downstream tasks without modifying pretrained weights. While extending pro…

cs.LG2025

MI-to-Mid Distilled Compression (M2M-DC): An Hybrid-Information-Guided-Block Pruning with Progressive Inner Slicing Approach to Model Compression

Lionel Levine, Haniyeh Ehsani Oskouie, Sajjad Ghiasvand +1

We introduce MI-to-Mid Distilled Compression (M2M-DC), a two-scale, shape-safe compression framework that interleaves information-guided block pruning with progressive inner slicin…

cs.CV2025

pFedMMA: Personalized Federated Fine-Tuning with Multi-Modal Adapter for Vision-Language Models

Sajjad Ghiasvand, Mahnoosh Alizadeh, Ramtin Pedarsani

Vision-Language Models (VLMs) like CLIP have demonstrated remarkable generalization in zero- and few-shot settings, but adapting them efficiently to decentralized, heterogeneous da…

cs.LG2025

Few-Shot Adversarial Low-Rank Fine-Tuning of Vision-Language Models

Sajjad Ghiasvand, Haniyeh Ehsani Oskouie, Mahnoosh Alizadeh +1

Vision-Language Models (VLMs) such as CLIP have shown remarkable performance in cross-modal tasks through large-scale contrastive pre-training. To adapt these large transformer-bas…

cs.LG2025

Decentralized Low-Rank Fine-Tuning of Large Language Models

Sajjad Ghiasvand, Mahnoosh Alizadeh, Ramtin Pedarsani

While parameter-efficient fine-tuning (PEFT) techniques like Low-Rank Adaptation (LoRA) offer computationally efficient adaptations of Large Language Models (LLMs), their practical…

cs.LG2024★ 2 cited

Communication-Efficient and Tensorized Federated Fine-Tuning of Large Language Models

Sajjad Ghiasvand, Yifan Yang, Zhiyu Xue +3

Parameter-efficient fine-tuning (PEFT) methods typically assume that Large Language Models (LLMs) are trained on data from a single device or client. However, real-world scenarios…

cs.LG2024

Exploring Cross-model Neuronal Correlations in the Context of Predicting Model Performance and Generalizability

Haniyeh Ehsani Oskouie, Sajjad Ghiasvand, Lionel Levine +1

As Artificial Intelligence (AI) models are increasingly integrated into critical systems, the need for a robust framework to establish the trustworthiness of AI is increasingly par…

cs.LG2024★ 1 cited

Robust Decentralized Learning with Local Updates and Gradient Tracking

Sajjad Ghiasvand, Amirhossein Reisizadeh, Mahnoosh Alizadeh +1

As distributed learning applications such as Federated Learning, the Internet of Things (IoT), and Edge Computing grow, it is critical to address the shortcomings of such technolog…

eess.SP2022★ 3 cited

MISO Wireless Localization in The Presence of Reconfigurable Intelligent Surface

Sajjad Ghiasvand, Arash Nasri, Ali H. Abdollahi Bafghi +1

Reconfigurable Intelligent Surface (RIS) plays a pivotal role in the sixth generation networks to enhance communication rate and localization accuracy. In this letter, we propose a…