Search Results for author: Alessandro Laio

Found 14 papers, 7 papers with code

Mapping of attention mechanisms to a generalized Potts model

no code implementations14 Apr 2023 Riccardo Rende, Federica Gerace, Alessandro Laio, Sebastian Goldt

In MLM, a word is randomly masked in an input sequence, and the network is trained to predict the missing word.

Language Modelling Masked Language Modeling

Optimal transfer protocol by incremental layer defrosting

no code implementations2 Mar 2023 Federica Gerace, Diego Doimo, Stefano Sarao Mannelli, Luca Saglietti, Alessandro Laio

The simplest transfer learning protocol is based on ``freezing" the feature-extractor layers of a network pre-trained on a data-rich source task, and then adapting only the last layers to a data-poor target task.

Transfer Learning

Intrinsic dimension estimation for discrete metrics

no code implementations20 Jul 2022 Iuri Macocco, Aldo Glielmo, Jacopo Grilli, Alessandro Laio

Real world-datasets characterized by discrete features are ubiquitous: from categorical surveys to clinical questionnaires, from unweighted networks to DNA sequences.

Redundant representations help generalization in wide neural networks

1 code implementation7 Jun 2021 Diego Doimo, Aldo Glielmo, Sebastian Goldt, Alessandro Laio

Deep neural networks (DNNs) defy the classical bias-variance trade-off: adding parameters to a DNN that interpolates its training data will typically improve its generalization performance.

Image Classification Learning Theory

Ranking the information content of distance measures

no code implementations30 Apr 2021 Aldo Glielmo, Claudio Zeni, Bingqing Cheng, Gabor Csanyi, Alessandro Laio

Real-world data typically contain a large number of features that are often heterogeneous in nature, relevance, and also units of measure.

Statistically Unbiased Free Energy Estimates from Biased Simulations

no code implementations11 Feb 2021 Matteo Carli, Alessandro Laio

Estimating the free energy in molecular simulation requires, implicitly or explicitly, counting how many times the system is observed in a finite region.

Chemical Physics Soft Condensed Matter Computational Physics

Dynamical Landscape and Multistability of a Climate Model

no code implementations20 Oct 2020 Georgios Margazoglou, Tobias Grafke, Alessandro Laio, Valerio Lucarini

We apply two independent data analysis methodologies to locate stable climate states in an intermediate complexity climate model and analyze their interplay.

Hierarchical nucleation in deep neural networks

1 code implementation NeurIPS 2020 Diego Doimo, Aldo Glielmo, Alessio Ansuini, Alessandro Laio

This process leaves a footprint in the probability density of the output layer where the topography of the peaks allows reconstructing the semantic relationships of the categories.

Intrinsic dimension of data representations in deep neural networks

1 code implementation NeurIPS 2019 Alessio Ansuini, Alessandro Laio, Jakob H. Macke, Davide Zoccolan

We find that, in a trained network, the ID is orders of magnitude smaller than the number of units in each layer.

Data segmentation based on the local intrinsic dimension

1 code implementation27 Feb 2019 Michele Allegra, Elena Facco, Francesco Denti, Alessandro Laio, Antonietta Mira

Here we develop a robust approach to discriminate regions with different local IDs and segment the points accordingly.

Clustering General Classification

Estimating the intrinsic dimension of datasets by a minimal neighborhood information

1 code implementation19 Mar 2018 Elena Facco, Maria d'Errico, Alex Rodriguez, Alessandro Laio

Analyzing large volumes of high-dimensional data is an issue of fundamental importance in data science, molecular simulations and beyond.

Automatic topography of high-dimensional data sets by non-parametric Density Peak clustering

2 code implementations28 Feb 2018 Maria d'Errico, Elena Facco, Alessandro Laio, Alex Rodriguez

The approach is based on an unsupervised extension of Density Peak clustering and a non-parametric density estimator that measures the probability density in the manifold containing the data.

Clustering

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