Search Results for author: Joel Janek Dabrowski

Found 11 papers, 2 papers with code

A Neural Emulator for Uncertainty Estimation of Fire Propagation

no code implementations10 May 2023 Andrew Bolt, Conrad Sanderson, Joel Janek Dabrowski, Carolyn Huston, Petra Kuhnert

When compared to a related neural model (emulator) which was employed to generate probability maps via ensembles of emulated fires, the proposed approach produces competitive Jaccard similarity scores while being approximately an order of magnitude faster.

Fruit Picker Activity Recognition with Wearable Sensors and Machine Learning

no code implementations20 Apr 2023 Joel Janek Dabrowski, Ashfaqur Rahman

For farmers and managers, the knowledge of when a picker bag is emptied is important for managing harvesting bins more effectively to minimise the time the picked fruit is left out in the heat (resulting in reduced shelf life).

Human Activity Recognition Time Series

An operational framework to automatically evaluate the quality of weather observations from third-party stations

no code implementations5 Dec 2022 Quanxi Shao, Ming Li, Joel Janek Dabrowski, Shuvo Bakar, Ashfaqur Rahman, Andrea Powell, Brent Henderson

With increasing number of crowdsourced private automatic weather stations (called TPAWS) established to fill the gap of official network and obtain local weather information for various purposes, the data quality is a major concern in promoting their usage.

Bayesian Physics Informed Neural Networks for Data Assimilation and Spatio-Temporal Modelling of Wildfires

1 code implementation2 Dec 2022 Joel Janek Dabrowski, Daniel Edward Pagendam, James Hilton, Conrad Sanderson, Daniel MacKinlay, Carolyn Huston, Andrew Bolt, Petra Kuhnert

We show that popular optimisation cost functions used in the literature can result in PINNs that fail to maintain temporal continuity in modelled fire-fronts when there are extreme changes in exogenous forcing variables such as wind direction.

Uncertainty Quantification

A Spatio-Temporal Neural Network Forecasting Approach for Emulation of Firefront Models

no code implementations17 Jun 2022 Andrew Bolt, Carolyn Huston, Petra Kuhnert, Joel Janek Dabrowski, James Hilton, Conrad Sanderson

We propose a dedicated spatio-temporal neural network based framework for model emulation, able to capture the complex behaviour of fire spread models.

Data Augmentation

An Emulation Framework for Fire Front Spread

no code implementations23 Mar 2022 Andrew Bolt, Joel Janek Dabrowski, Carolyn Huston, Petra Kuhnert

Empirical observations of bushfire spread can be used to estimate fire response under certain conditions.

Deep Learning and Statistical Models for Time-Critical Pedestrian Behaviour Prediction

no code implementations26 Feb 2020 Joel Janek Dabrowski, Johan Pieter de Villiers, Ashfaqur Rahman, Conrad Beyers

We show that, though the neural network model achieves an accuracy of 80%, it requires long sequences to achieve this (100 samples or more).

Sequence-to-Sequence Imputation of Missing Sensor Data

no code implementations25 Feb 2020 Joel Janek Dabrowski, Ashfaqur Rahman

Although the sequence-to-sequence (encoder-decoder) model is considered the state-of-the-art in deep learning sequence models, there is little research into using this model for recovering missing sensor data.

Imputation

ForecastNet: A Time-Variant Deep Feed-Forward Neural Network Architecture for Multi-Step-Ahead Time-Series Forecasting

1 code implementation11 Feb 2020 Joel Janek Dabrowski, Yifan Zhang, Ashfaqur Rahman

Recurrent and convolutional neural networks are the most common architectures used for time series forecasting in deep learning literature.

Time Series Time Series Forecasting

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