Search Results for author: Ibrahim Jubran

Found 15 papers, 3 papers with code

Newton-PnP: Real-time Visual Navigation for Autonomous Toy-Drones

no code implementations5 Mar 2022 Ibrahim Jubran, Fares Fares, Yuval Alfassi, Firas Ayoub, Dan Feldman

The Perspective-n-Point problem aims to estimate the relative pose between a calibrated monocular camera and a known 3D model, by aligning pairs of 2D captured image points to their corresponding 3D points in the model.

Visual Navigation

Introduction to Coresets: Approximated Mean

no code implementations4 Nov 2021 Alaa Maalouf, Ibrahim Jubran, Dan Feldman

The survey may help guide new researchers unfamiliar with the field, and introduce them to the very basic foundations of coresets, through a simple, yet fundamental, problem.

Unsupervised High-Fidelity Facial Texture Generation and Reconstruction

no code implementations10 Oct 2021 Ron Slossberg, Ibrahim Jubran, Ron Kimmel

In this paper, we propose a novel unified pipeline for both tasks, generation of both geometry and texture, and recovery of high-fidelity texture.

Image Generation Texture Synthesis +2

Coresets for Decision Trees of Signals

1 code implementation NeurIPS 2021 Ibrahim Jubran, Ernesto Evgeniy Sanches Shayda, Ilan Newman, Dan Feldman

Its regression or classification loss to a given matrix $D$ of $N$ entries (labels) is the sum of squared differences over every label in $D$ and its assigned label by $t$.

Provably Approximated ICP

no code implementations10 Jan 2021 Ibrahim Jubran, Alaa Maalouf, Ron Kimmel, Dan Feldman

A harder version is the \emph{registration problem}, where the correspondence is unknown, and the minimum is also over all possible correspondence functions from $P$ to $Q$.

Provably Approximated Point Cloud Registration

no code implementations ICCV 2021 Ibrahim Jubran, Alaa Maalouf, Ron Kimmel, Dan Feldman

A harder version is the registration problem, where the correspondence is unknown, and the minimum is also over all possible correspondence functions from P to Q. Algorithms such as the Iterative Closest Point (ICP) and its variants were suggested for these problems, but none yield a provable non-trivial approximation for the global optimum.

Point Cloud Registration

Faster PAC Learning and Smaller Coresets via Smoothed Analysis

no code implementations9 Jun 2020 Alaa Maalouf, Ibrahim Jubran, Murad Tukan, Dan Feldman

PAC-learning usually aims to compute a small subset ($\varepsilon$-sample/net) from $n$ items, that provably approximates a given loss function for every query (model, classifier, hypothesis) from a given set of queries, up to an additive error $\varepsilon\in(0, 1)$.

PAC learning

Sets Clustering

no code implementations ICML 2020 Ibrahim Jubran, Murad Tukan, Alaa Maalouf, Dan Feldman

The input to the \emph{sets-$k$-means} problem is an integer $k\geq 1$ and a set $\mathcal{P}=\{P_1,\cdots, P_n\}$ of sets in $\mathbb{R}^d$.

Clustering Document Classification

Introduction to Coresets: Accurate Coresets

no code implementations19 Oct 2019 Ibrahim Jubran, Alaa Maalouf, Dan Feldman

A coreset (or core-set) of an input set is its small summation, such that solving a problem on the coreset as its input, provably yields the same result as solving the same problem on the original (full) set, for a given family of problems (models, classifiers, loss functions).

Math

Fast and Accurate Least-Mean-Squares Solvers

1 code implementation NeurIPS 2019 Alaa Maalouf, Ibrahim Jubran, Dan Feldman

Least-mean squares (LMS) solvers such as Linear / Ridge / Lasso-Regression, SVD and Elastic-Net not only solve fundamental machine learning problems, but are also the building blocks in a variety of other methods, such as decision trees and matrix factorizations.

Data Summarization

Provable Approximations for Constrained $\ell_p$ Regression

no code implementations27 Feb 2019 Ibrahim Jubran, David Cohn, Dan Feldman

The $\ell_p$ linear regression problem is to minimize $f(x)=||Ax-b||_p$ over $x\in\mathbb{R}^d$, where $A\in\mathbb{R}^{n\times d}$, $b\in \mathbb{R}^n$, and $p>0$.

regression

Aligning Points to Lines: Provable Approximations

no code implementations23 Jul 2018 Ibrahim Jubran, Dan Feldman

This problem is non-trivial even if $z=1$ and the matching $\pi$ is given.

Generic Coreset for Scalable Learning of Monotonic Kernels: Logistic Regression, Sigmoid and more

no code implementations21 Feb 2018 Elad Tolochinsky, Ibrahim Jubran, Dan Feldman

Coreset (or core-set) is a small weighted \emph{subset} $Q$ of an input set $P$ with respect to a given \emph{monotonic} function $f:\mathbb{R}\to\mathbb{R}$ that \emph{provably} approximates its fitting loss $\sum_{p\in P}f(p\cdot x)$ to \emph{any} given $x\in\mathbb{R}^d$.

regression

CoBe -- Coded Beacons for Localization, Object Tracking, and SLAM Augmentation

1 code implementation18 Aug 2017 Roman Rabinovich, Ibrahim Jubran, Aaron Wetzler, Ron Kimmel

This paper presents a novel beacon light coding protocol, which enables fast and accurate identification of the beacons in an image.

Object Tracking Simultaneous Localization and Mapping

Coresets for Kinematic Data: From Theorems to Real-Time Systems

no code implementations30 Nov 2015 Soliman Nasser, Ibrahim Jubran, Dan Feldman

By maintaining such a coreset for kinematic (moving) set of $n$ points, we can run pose-estimation algorithms, such as Kabsch or PnP, on the small coresets, instead of the $n$ points, in real-time using weak devices, while obtaining the same results.

Pose Estimation

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