Search Results for author: Ori Katz

Found 15 papers, 5 papers with code

Representation Learning via Variational Bayesian Networks

no code implementations28 Jun 2023 Oren Barkan, Avi Caciularu, Idan Rejwan, Ori Katz, Jonathan Weill, Itzik Malkiel, Noam Koenigstein

We present Variational Bayesian Network (VBN) - a novel Bayesian entity representation learning model that utilizes hierarchical and relational side information and is particularly useful for modeling entities in the ``long-tail'', where the data is scarce.

Bayesian Inference Representation Learning

Grad-SAM: Explaining Transformers via Gradient Self-Attention Maps

no code implementations23 Apr 2022 Oren Barkan, Edan Hauon, Avi Caciularu, Ori Katz, Itzik Malkiel, Omri Armstrong, Noam Koenigstein

Transformer-based language models significantly advanced the state-of-the-art in many linguistic tasks.

Cold Item Integration in Deep Hybrid Recommenders via Tunable Stochastic Gates

no code implementations12 Dec 2021 Oren Barkan, Roy Hirsch, Ori Katz, Avi Caciularu, Jonathan Weill, Noam Koenigstein

Next, we propose a novel hybrid recommendation algorithm that bridges these two conflicting objectives and enables a harmonized balance between preserving high accuracy for warm items while effectively promoting completely cold items.

Collaborative Filtering

Discovery of Single Independent Latent Variable

1 code implementation12 Oct 2021 Uri Shaham, Jonathan Svirsky, Ori Katz, Ronen Talmon

Latent variable discovery is a central problem in data analysis with a broad range of applications in applied science.

Image Generation Voice Cloning

GAM: Explainable Visual Similarity and Classification via Gradient Activation Maps

no code implementations2 Sep 2021 Oren Barkan, Omri Armstrong, Amir Hertz, Avi Caciularu, Ori Katz, Itzik Malkiel, Noam Koenigstein

The algorithmic advantages of GAM are explained in detail, and validated empirically, where it is shown that GAM outperforms its alternatives across various tasks and datasets.

Classification

Spectral Flow on the Manifold of SPD Matrices for Multimodal Data Processing

1 code implementation17 Sep 2020 Ori Katz, Roy R. Lederman, Ronen Talmon

Our approach combines manifold learning, which is a class of nonlinear data-driven dimension reduction methods, with the well-known Riemannian geometry of symmetric and positive-definite (SPD) matrices.

Dimensionality Reduction

Guidestar-free image-guided wavefront-shaping

no code implementations8 Jul 2020 Tomer Yeminy, Ori Katz

Optical imaging through scattering media is a fundamental challenge in many applications.

Neural Attentive Multiview Machines

no code implementations18 Feb 2020 Oren Barkan, Ori Katz, Noam Koenigstein

An important problem in multiview representation learning is finding the optimal combination of views with respect to the specific task at hand.

Representation Learning

Attentive Item2Vec: Neural Attentive User Representations

no code implementations15 Feb 2020 Oren Barkan, Avi Caciularu, Ori Katz, Noam Koenigstein

However, it is possible that a certain early movie may become suddenly more relevant in the presence of a popular sequel movie.

Recommendation Systems

Scalable Attentive Sentence-Pair Modeling via Distilled Sentence Embedding

1 code implementation14 Aug 2019 Oren Barkan, Noam Razin, Itzik Malkiel, Ori Katz, Avi Caciularu, Noam Koenigstein

In this paper, we introduce Distilled Sentence Embedding (DSE) - a model that is based on knowledge distillation from cross-attentive models, focusing on sentence-pair tasks.

Knowledge Distillation Natural Language Understanding +4

Diffusion-based nonlinear filtering for multimodal data fusion with application to sleep stage assessment

no code implementations13 Jan 2017 Ori Katz, Ronen Talmon, Yu-Lun Lo, Hau-Tieng Wu

We show that without prior knowledge on the different modalities and on the measured system, our method gives rise to a data-driven representation that is well correlated with the underlying sleep process and is robust to noise and sensor-specific effects.

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