Contributo in atti di convegno, 2021, ENG, 10.1109/ICTAI52525.2021.00073

Predicting the next location for trajectories from stolen vehicles

Da Silva Neto J.S.; Coelho Da Silva T.L.; Cruz L.A.; Monteiro de Lira V.; José Antônio F. de Macêdo José A.F.; Magalh R.P.

Federal University of Ceara, Fortaleza, Brazil; Federal University of Ceara, Fortaleza, Brazil; Federal University of Ceara, Fortaleza, Brazil; CNR-ISTI, Pisa, Italy; Federal University of Ceara, Fortaleza, Brazil; Federal University of Ceara, Fortaleza, Brazil; Federal University of Ceara, Fortaleza, Brazil

Neural Networks (NN), although successfully applied to several Artificial Intelligence tasks, are often unnecessarily over-parametrized. In edge/fog computing, this might make their training prohibitive on resource-constrained devices, contrasting with the current trend of decentralizing intelligence from remote data centres to local constrained devices. Therefore, we investigate the problem of training effective NN models on constrained devices having a fixed, potentially small, memory budget. We target techniques that are both resource-efficient and performance effective while enabling significant network compression. Our Dynamic Hard Pruning (DynHP) technique incrementally prunes the network during training, identifying neurons that marginally contribute to the model accuracy. DynHP enables a tunable size reduction of the final neural network and reduces the NN memory occupancy during training. Freed memory is reused by a dynamic batch sizing approach to counterbalance the accuracy degradation caused by the hard pruning strategy, improving its convergence and effectiveness. We assess the performance of DynHP through reproducible experiments on three public datasets, comparing them against reference competitors. Results show that DynHP compresses a NN up to 10 times without significant performance drops (up to 3.5% additional error w.r.t. the competitors), reducing up to 80% the training memory occupancy.

ICTAI 2021 - IEEE 33rd International Conference on Tools with Artificial Intelligence, Washington, DC, USA, 1-3/11/2021

Keywords

Trajactory data, Stolen vehicles, Next location prediction

CNR authors

Monteiro De Lira Vinicius Cezar

CNR institutes

ISTI – Istituto di scienza e tecnologie dell'informazione "Alessandro Faedo"

ID: 465630

Year: 2021

Type: Contributo in atti di convegno

Creation: 2022-03-25 18:35:09.000

Last update: 2022-03-29 13:42:45.000

External IDs

CNR OAI-PMH: oai:it.cnr:prodotti:465630

DOI: 10.1109/ICTAI52525.2021.00073

Scopus: 2-s2.0-85123911686

ISI Web of Science (WOS): 000747482300065