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Mahyar Najibi

20 accepted papers

2025

CtrlSynth: Controllable Image Text Synthesis for Data-Efficient Multimodal Learning

ICML 2025poster

Pretraining robust vision or multimodal foundation models (e.g., CLIP) relies on large-scale datasets that may be noisy, potentially misaligned, and have long-tail distributions. Previous works have shown promising results in augmenting datasets by generating synthetic samples. However, they only su…

Cited by 2SourcePDFScholar
2025

QuantSpec: Self-Speculative Decoding with Hierarchical Quantized KV Cache

ICML 2025poster

Large Language Models (LLMs) are increasingly being deployed on edge devices for long-context settings, creating a growing need for fast and efficient long-context inference. In these scenarios, the Key-Value (KV) cache is the primary bottleneck in terms of both GPU memory and latency, as the full K…

Cited by 0SourcePDFScholar
2025

SeedLM: Compressing LLM Weights into Seeds of Pseudo-Random Generators

ICLR 2025poster

Large Language Models (LLMs) have transformed natural language processing, but face significant challenges in widespread deployment due to their high runtime cost. In this paper, we introduce SeedLM, a novel post-training compression method that uses seeds of a pseudo-random generator to encode and…

Cited by 0SourcePDFScholar
2025

Speculative Streaming: Efficient and Scalable Speculative Decoding with Multi-Stream Attention

EMNLP 2025

Speculative decoding is a prominent technique for accelerating LLM inference by leveraging an auxiliary draft model, but its effectiveness is limited by the autoregressive nature of draft generation, where acceptance rates depend on the draft model’s size. Scaling the draft model improves acceptance

Cited by 0SourcePDFScholar
2024

Superposition Prompting: Improving and Accelerating Retrieval-Augmented Generation

ICML 2024poster

Despite the successes of large language models (LLMs), they exhibit significant drawbacks, particularly when processing long contexts. Their inference cost scales quadratically with respect to sequence length, making it expensive for deployment in some real-world text processing applications, such a…

2023

3D Human Keypoints Estimation From Point Clouds in the Wild Without Human Labels

CVPR 2023poster

Training a 3D human keypoint detector from point clouds in a supervised manner requires large volumes of high quality labels. While it is relatively easy to capture large amounts of human point clouds, annotating 3D keypoints is expensive, subjective, error prone and especially difficult for long-ta…

Cited by 17SourcePDFScholar
2023

GINA-3D: Learning To Generate Implicit Neural Assets in the Wild

CVPR 2023poster

Modeling the 3D world from sensor data for simulation is a scalable way of developing testing and validation environments for robotic learning problems such as autonomous driving. However, manually creating or re-creating real-world-like environments is difficult, expensive, and not scalable. Recent…

Cited by 21SourcePDFScholar
2023

Unsupervised 3D Perception with 2D Vision-Language Distillation for Autonomous Driving

ICCV 2023poster

Closed-set 3D perception models trained on only a pre-defined set of object categories can be inadequate for safety critical applications such as autonomous driving where new object types can be encountered after deployment. In this paper, we present a multi-modal auto labeling pipeline capable of g…

Cited by 31PDFScholar
2022

Improving the Intra-Class Long-Tail in 3D Detection via Rare Example Mining

ECCV 2022poster

"Continued improvements in deep learning architectures have steadily advanced the overall performance of 3D object detectors to levels on par with humans for certain tasks and datasets, where the overall performance is mostly driven by common examples. However, even the best performing models suffer…

Cited by 36SourcePDFScholar
2022

Motion Inspired Unsupervised Perception and Prediction in Autonomous Driving

ECCV 2022poster

"Learning-based perception and prediction modules in modern autonomous driving systems typically rely on expensive human annotation and are designed to perceive only a handful of predefined object categories. This closed-set paradigm is insufficient for the safety-critical autonomous driving task, w…

Cited by 68SourcePDFScholar
2021

Offboard 3D Object Detection From Point Cloud Sequences

CVPR 2021poster

While current 3D object recognition research mostly focuses on the real-time, onboard scenario, there are many offboard use cases of perception that are largely under-explored, such as using machines to automatically generate high-quality 3D labels. Existing 3D object detectors fail to satisfy the h…

Cited by 226PDFScholar
2021

Revisiting 3D Object Detection From an Egocentric Perspective

NeurIPS 2021poster

3D object detection is a key module for safety-critical robotics applications such as autonomous driving. For these applications, we care most about how the detections affect the ego-agent’s behavior and safety (the egocentric perspective). Intuitively, we seek more accurate descriptions of object g…

Cited by 28SourcePDFScholar
2020

DOPS: Learning to Detect 3D Objects and Predict Their 3D Shapes

CVPR 2020poster

We propose DOPS, a fast single-stage 3D object detection method for LIDAR data. Previous methods often make domain-specific design decisions, for example projecting points into a bird-eye view image in autonomous driving scenarios. In contrast, we propose a general-purpose method that works on both…

Cited by 72PDFScholar
2019

Adversarial training for free!

NeurIPS 2019poster

Adversarial training, in which a network is trained on adversarial examples, is one of the few defenses against adversarial attacks that withstands strong attacks. Unfortunately, the high cost of generating strong adversarial examples makes standard adversarial training impractical on large-scale pr…

Cited by 1720SourcePDFScholar
2018

Poison Frogs! Targeted Clean-Label Poisoning Attacks on Neural Networks

NeurIPS 2018poster

Data poisoning is an attack on machine learning models wherein the attacker adds examples to the training set to manipulate the behavior of the model at test time. This paper explores poisoning attacks on neural nets. The proposed attacks use ``clean-labels''; they don't require the attacker to have…