Niv Haim


I am an AI/ML researcher at Mobileye, working on ML for autonomous vehicles. I did my Ph.D. at Weizmann Institute of Science, advised by Prof. Michal Irani, where I worked on machine learning and computer vision, and more specifically, Generative AI and understanding memorization in neural networks.


I did my Msc. in theoretical astrophysics, advised by Prof. Boaz Katz, and worked with Prof. Yaron Lipman on Geometric Deep Learning. I received my BSc. in computer science and physics from the Technion (Lapidim excellence program alumnus)


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Publications
Deconstructing Data Reconstruction: Multiclass, Weight Decay and General Losses
Gon Buzaglo*, Niv Haim*, Gilad Yehudai, Gal Vardi, Yakir Oz, Yaniv Nikankin, Michal Irani
NeurIPS 2023
BibTeX / ArXiv / Code / Video
Training set reconstruction from multiclass classifiers and models trained with regression loss with some inriguing observations on the implications of weight decay on reconstructability.
(Earlier version appeared in ICLR Workshop on Trustworthy ML, 2023)
SinFusion: Training Diffusion Models on a Single Image or Video
Yaniv Nikankin*, Niv Haim*, Michal Irani
ICML 2023
BibTeX / ArXiv / Code / Project Page
Diffusion models can be trained on a single image or video, giving rise to diverse video generation and extrapolation.
Reconstructing Training Data from Trained Neural Networks
Niv Haim*, Gal Vardi*, Gilad Yehudai*, Ohad Shamir, Michal Irani
NeurIPS 2022
Oral
BibTeX / ArXiv / Code / Project Page / Video
We show that a large portion of the training data can be reconstructed from the parameters of trained MLP binary classifiers. Our method stems from theoretical results about the implicit bias of neural networks trained with gradient descent
Diverse Generation from a Single Video Made Possible
Niv Haim*, Ben Finestein*, Niv Granot, Assaf Shocher, Shai Bagon, Tali Dekel, Michal Irani
ECCV 2022
BibTeX / ArXiv / Code / Video / Project Page
We generate diverse video samples from a single video using patch-based methods. Our results outperform single-video GANs in visual quality and are orders of magnitude faster to generate
(Extended abstract appeared at AI For Content Creation Workshop @ CVPR, 2022)
From Discrete to Continuous Convolution Layers
Assaf Shocher*, Ben Finestein*, Niv Haim*, Michal Irani
Preprint, 2020
BibTeX / ArXiv
Learning continuous convolution kernels improve translation equivariance and allow test time scales augmentations
clean-usnob Implicit Geometric Regularization for Learning Shapes
Amos Gropp, Lior Yariv, Niv Haim, Matan Atzmon, Yaron Lipman
ICML 2020
BibTeX / ArXiv / Code / Video
Using an "Eikonal regularization" term with implicit neural representation works surprisingly well for modelling complex surfaces
clean-usnob Controlling Neural Level Sets
Matan Atzmon, Niv Haim, Lior Yariv, Ofer Israelov, Haggai Maron, Yaron Lipman
NeurIPS 2019
BibTeX / ArXiv / Code / Poster
Making input points differentiable (w.r.t model parameters), and using it for shape modelling, improved robustness to adversrial examples and more
clean-usnob Surface Networks via General Covers
Niv Haim*, Nimrod Segol*, Heli Ben-Hamu, Haggai Maron, Yaron Lipman
ICCV 2019
BibTeX / ArXiv / Code
Transforming 3D shapes to image representation so we can feed them to off-the-shelf CNNs and do classification, human-parts segmentation and more
Extreme close approaches in hierarchical triple systems with comparable masses
Niv Haim, Boaz Katz
MNRAS 2018
BibTeX / ArXiv / Code
Ever wondered if your hierarchical three-body system will eventually collide? find out by plugging your initial conditions into our analytical prediction formula (that works with high probability)

Recorded Talks
Reconstructing Training Data from Trained Classifiers @ Microsoft Data Science Bond

Introduction to Adversarial Examples @ DL4CV2021

Teaching
Weizmann Institute
of Science
Blog Post: How to Give a Good Student Seminar Presentation

Deep Learning for Computer Vision [Winter 2021, Winter 2022]
Advanced Topics in Computer Vision and Deep Learning [Spring 2020, Spring 2021, Spring 2022, Spring 2023]
Deep Neural Networks - a Hands-On Challenge [Spring 2017]

Miscellaneous
I play the violin [YouTube]

I sometimes write about my travels [blog]



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