1–4 Nov 2022
Rutgers University
US/Eastern timezone

A boosted kNN regressor with 66 million parameters

4 Nov 2022, 12:10
20m
202ABC (Rutgers University)

202ABC

Rutgers University

Livingston Student Center

Speaker

Tommaso Dorigo (Universita e INFN, Padova (IT))

Description

We develop a nearest neighbor algorithm for regressor for the problem of estimating the energy of multi-TeV muons in a high-granularity calorimeter, exploiting the pattern of soft photon deposits around the muon track. The algorithm is heavily overparametrized by assigning weights and biases to the training events. Parameters are learnt by batch gradient descent. The performance compares favourably with that of xgdboost and a neural network, although CPU consumption is orders of magnitude larger.

Primary author

Tommaso Dorigo (Universita e INFN, Padova (IT))

Presentation materials