Search Results for author: Hafiz Tiomoko Ali

Found 7 papers, 1 papers with code

Deep Neural Network Models Trained With A Fixed Random Classifier Transfer Better Across Domains

no code implementations28 Feb 2024 Hafiz Tiomoko Ali, Umberto Michieli, Ji Joong Moon, Daehyun Kim, Mete Ozay

Inspired by NC properties, we explore in this paper the transferability of DNN models trained with their last layer weight fixed according to ETF.

Fine-Grained Image Classification Transfer Learning

Random matrices in service of ML footprint: ternary random features with no performance loss

2 code implementations ICLR 2022 Hafiz Tiomoko Ali, Zhenyu Liao, Romain Couillet

As a result, for any kernel matrix ${\bf K}$ of the form above, we propose a novel random features technique, called Ternary Random Feature (TRF), that (i) asymptotically yields the same limiting kernel as the original ${\bf K}$ in a spectral sense and (ii) can be computed and stored much more efficiently, by wisely tuning (in a data-dependent manner) the function $\sigma$ and the random vector ${\bf w}$, both taking values in $\{-1, 0, 1\}$.

Quantization

Deciphering and Optimizing Multi-Task Learning: a Random Matrix Approach

no code implementations ICLR 2021 Malik Tiomoko, Hafiz Tiomoko Ali, Romain Couillet

This article provides theoretical insights into the inner workings of multi-task and transfer learning methods, by studying the tractable least-square support vector machine multi-task learning (LS-SVM MTL) method, in the limit of large ($p$) and numerous ($n$) data.

Multi-Task Learning

Latent heterogeneous multilayer community detection

no code implementations16 Jun 2018 Hafiz Tiomoko Ali, Sijia Liu, Yasin Yilmaz, Romain Couillet, Indika Rajapakse, Alfred Hero

We propose a method for simultaneously detecting shared and unshared communities in heterogeneous multilayer weighted and undirected networks.

Community Detection

Coulomb Autoencoders

no code implementations10 Feb 2018 Emanuele Sansone, Hafiz Tiomoko Ali, Sun Jiacheng

Learning the true density in high-dimensional feature spaces is a well-known problem in machine learning.

Spectral community detection in heterogeneous large networks

no code implementations3 Nov 2016 Hafiz Tiomoko Ali, Romain Couillet

The analysis of this equivalent spiked random matrix allows us to improve spectral methods for community detection and assess their performances in the regime under study.

Clustering Community Detection

The Asymptotic Performance of Linear Echo State Neural Networks

no code implementations25 Mar 2016 Romain Couillet, Gilles Wainrib, Harry Sevi, Hafiz Tiomoko Ali

In this article, a study of the mean-square error (MSE) performance of linear echo-state neural networks is performed, both for training and testing tasks.

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