no code implementations • ICLR 2019 • Xiang Jiang, Mohammad Havaei, Gabriel Chartrand, Hassan Chouaib, Thomas Vincent, Andrew Jesson, Nicolas Chapados, Stan Matwin
Current deep learning based text classification methods are limited by their ability to achieve fast learning and generalization when the data is scarce.
no code implementations • 23 Jun 2024 • Zahra Sadeghi, Stan Matwin
Global sensitivity analysis (GSA) aims to detect influential input factors that lead a model to arrive at a certain decision and is a significant approach for mitigating the computational burden of processing high dimensional data.
no code implementations • 23 Jan 2024 • Ruixin Song, Gabriel Spadon, Ronald Pelot, Stan Matwin, Amilcar Soares
The predicted information provided by these models, in turn, is used as input for risk assessment of NIS spread through transportation networks to evaluate the capability of our solution.
no code implementations • 21 Jan 2024 • Will Taylor-Melanson, Zahra Sadeghi, Stan Matwin
We exploit the Morpho-MNIST causal dataset as a case study for exploring our proposed methods for generating counterfacutl explantions.
1 code implementation • 7 Jan 2024 • Nader Zare, Omid Amini, Aref Sayareh, Mahtab Sarvmaili, Arad Firouzkouhi, Stan Matwin, Amilcar Soares
The RoboCup 2D Soccer Simulation League is a stochastic, partially observable soccer environment in which 24 autonomous agents play on two opposing teams.
no code implementations • 29 Oct 2023 • Gabriel Spadon, Jay Kumar, Derek Eden, Josh van Berkel, Tom Foster, Amilcar Soares, Ronan Fablet, Stan Matwin, Ronald Pelot
To this end, we fuse the spatiotemporal features from the AIS messages with probabilistic features engineered from historical AIS data referring to potential routes and destinations.
1 code implementation • 22 Jul 2023 • Nader Zare, Aref Sayareh, Omid Amini, Mahtab Sarvmaili, Arad Firouzkouhi, Stan Matwin, Amilcar Soares
To conquer the challenges of C++ base codes and provide a powerful baseline for developing machine learning concepts, we introduce Pyrus, the first Python base code for SS2D.
1 code implementation • 27 May 2023 • Aref Sayareh, Nader Zare, Omid Amini, Arad Firouzkouhi, Mahtab Sarvmaili, Stan Matwin
The RoboCup competitions hold various leagues, and the Soccer Simulation 2D League is a major one among them.
no code implementations • 2 Mar 2023 • Noah Barrett, Zahra Sadeghi, Stan Matwin
We also compare optimal SSL solutions found by our evolutionary search mechanism and show the effect of batch size in the pretext task on two visual datasets.
1 code implementation • 12 Jul 2022 • Martha Dais Ferreira, Gabriel Spadon, Amilcar Soares, Stan Matwin
To this end, we leverage the unsupervised nature of cluster analysis to label the trajectory geometry highlighting the changes in the vessel's moving pattern which tends to indicate fishing activity.
1 code implementation • 22 May 2022 • Nader Zare, Arad Firouzkouhi, Omid Amini, Mahtab Sarvmaili, Aref Sayareh, Saba Ramezani Rad, Stan Matwin, Amilcar Soares
Soccer Simulation 2D League is one of the major leagues of RoboCup competitions.
1 code implementation • 27 Apr 2022 • Farshid Varno, Marzie Saghayi, Laya Rafiee Sevyeri, Sharut Gupta, Stan Matwin, Mohammad Havaei
In Federated Learning (FL), a number of clients or devices collaborate to train a model without sharing their data.
no code implementations • 24 Feb 2022 • Gabriel Spadon, Martha D. Ferreira, Amilcar Soares, Stan Matwin
The oceans are a source of an impressive mixture of complex data that could be used to uncover relationships yet to be discovered.
no code implementations • 13 Dec 2021 • Stan Matwin, Aristides Milios, Paweł Prałat, Amilcar Soares, François Théberge
This survey draws a broad-stroke, panoramic picture of the State of the Art (SoTA) of the research in generative methods for the analysis of social media data.
no code implementations • 29 Sep 2021 • William Keith Taylor-Melanson, Martha Dais Ferreira, Stan Matwin
Our experimental results on the addition problem confirm that our combination of orthogonal and scalar gated RNNs are able to outperform both predecessor models on long sequences using only a single RNN cell.
no code implementations • 27 Jun 2021 • Nader Zare, Bruno Brandoli, Mahtab Sarvmaili, Amilcar Soares, Stan Matwin
We designed our model based on Deep Deterministic Policy Gradient, local view maker, and planner.
no code implementations • 16 Jan 2021 • Hamed Jelodar, Rita Orji, Stan Matwin, Swarna Weerasinghe, Oladapo Oyebode, Yongli Wang
Novelty of the approach presented herein is a multitask methodological framework of text data processing, implemented as a pipeline for meaningful emotion detection and analysis, based on the Plutchik/Ekman approach to emotion detection and trend detection.
1 code implementation • 28 Aug 2020 • Gabriel Spadon, Shenda Hong, Bruno Brandoli, Stan Matwin, Jose F. Rodrigues-Jr, Jimeng Sun
Time-series forecasting is one of the most active research topics in artificial intelligence.
no code implementations • 23 Aug 2020 • Oladapo Oyebode, Chinenye Ndulue, Dinesh Mulchandani, Banuchitra Suruliraj, Ashfaq Adib, Fidelia Anulika Orji, Evangelos Milios, Stan Matwin, Rita Orji
The COVID-19 pandemic has affected people's lives in many ways.
1 code implementation • SEMEVAL 2020 • Xiaoyu Yang, Stephen Obadinma, Huasha Zhao, Qiong Zhang, Stan Matwin, Xiaodan Zhu
Subtask-1 aims to determine whether a given sentence is a counterfactual statement or not.
no code implementations • 2 Jul 2020 • Farshid Varno, Lucas May Petry, Lisa Di Jorio, Stan Matwin
We empirically show that compared to prevailing fine-tuning practices, FAST learns the target task faster and forgets the source task slower.
no code implementations • 13 Jun 2020 • Fateha Khanam Bappee, Lucas May Petry, Amilcar Soares, Stan Matwin
Finding the factors contributing to criminal activities and their consequences is essential to improve quantitative crime research.
1 code implementation • ICML 2020 • Xiang Jiang, Qicheng Lao, Stan Matwin, Mohammad Havaei
We present an approach for unsupervised domain adaptation---with a strong focus on practical considerations of within-domain class imbalance and between-domain class distribution shift---from a class-conditioned domain alignment perspective.
Ranked #1 on Unsupervised Domain Adaptation on Office-Home (Avg accuracy metric)
no code implementations • 7 Apr 2020 • Lucas May Petry, Amilcar Soares, Vania Bogorny, Bruno Brandoli, Stan Matwin
The global expansion of maritime activities and the development of the Automatic Identification System (AIS) have driven the advances in maritime monitoring systems in the last decade.
1 code implementation • 23 Mar 2020 • Mohammad Etemad, Zahra Etemad, Amilcar Soares, Vania Bogorny, Stan Matwin, Luis Torgo
One of the most critical steps for trajectory data mining is segmentation.
1 code implementation • 23 Mar 2020 • Mohammad Etemad, Nader Zare, Mahtab Sarvmaili, Amilcar Soares, Bruno Brandoli Machado, Stan Matwin
Experimental results show that the proposed method enhanced the performance of VVN by 55. 31 on average for long-distance missions.
no code implementations • 27 Jan 2020 • Riccardo Guidotti, Anna Monreale, Stan Matwin, Dino Pedreschi
We present an approach to explain the decisions of black box models for image classification.
no code implementations • 24 Jan 2020 • Oliver S. Kirsebom, Fabio Frazao, Yvan Simard, Nathalie Roy, Stan Matwin, Samuel Giard
Passive acoustics provides a powerful tool for monitoring the endangered North Atlantic right whale ($Eubalaena$ $glacialis$), but robust detection algorithms are needed to handle diverse and variable acoustic conditions and differences in recording techniques and equipment.
no code implementations • 3 Sep 2019 • Habibeh Naderi, Behrouz Haji Soleimani, Stan Matwin
We use several state-of-the-art embedding techniques including BERT, FastText, and Doc2VecC for the text representation learning and WaveNet and VGG-ish models for audio encoding.
no code implementations • 14 Aug 2019 • Lucas May Petry, Amilcar Soares, Vania Bogorny, Stan Matwin
The worldwide growth of maritime traffic and the development of the Automatic Identification System (AIS) has led to advances in monitoring systems for preventing vessel accidents and detecting illegal activities.
no code implementations • WS 2019 • Sima Sharifirad, Stan Matwin
In addition, we identify ten female figures from different professions and racial backgrounds who have experienced harassment on Twitter.
no code implementations • 30 Jul 2019 • Mark Thomas, Bruce Martin, Katie Kowarski, Briand Gaudet, Stan Matwin
Research into automated systems for detecting and classifying marine mammals in acoustic recordings is expanding internationally due to the necessity to analyze large collections of data for conservation purposes.
no code implementations • 25 May 2019 • Farshid Varno, Behrouz Haji Soleimani, Marzie Saghayi, Lisa Di Jorio, Stan Matwin
Transferring knowledge from one neural network to another has been shown to be helpful for learning tasks with few training examples.
no code implementations • ICLR 2019 • Xiang Jiang, Mohammad Havaei, Farshid Varno, Gabriel Chartrand, Nicolas Chapados, Stan Matwin
Neural networks can learn to extract statistical properties from data, but they seldom make use of structured information from the label space to help representation learning.
no code implementations • 27 Feb 2019 • Sima Sharifirad, Stan Matwin
Sexism is very common in social media and makes the boundaries of freedom tighter for feminist and female users.
1 code implementation • 13 Feb 2019 • Duong Nguyen, Oliver S. Kirsebom, Fábio Frazão, Ronan Fablet, Stan Matwin
In this paper, we adapt Recurrent Neural Networks with Stochastic Layers, which are the state-of-the-art for generating text, music and speech, to the problem of acoustic novelty detection.
Ranked #2 on Acoustic Novelty Detection on A3Lab PASCAL CHiME
no code implementations • 4 Feb 2019 • Witold Dzwinel, Rafal Wcislo, Stan Matwin
In the advent of big data era, interactive visualization of large data sets consisting of M*10^5+ high-dimensional feature vectors of length N (N ~ 10^3+), is an indispensable tool for data exploratory analysis.
no code implementations • 28 Jan 2019 • Sima Sharifirad, Borna Jafarpour, Stan Matwin
While sexism has been considered as a category of hateful speech in the literature, there is no comprehensive definition and category of sexism attracting natural language processing techniques.
no code implementations • 28 Dec 2018 • Xuan Liu, Xiaoguang Wang, Stan Matwin
To tackle this problem, we apply the Knowledge Distillation technique to distill Deep Neural Networks into decision trees in order to attain good performance and interpretability simultaneously.
no code implementations • WS 2018 • Sima Sharifirad, Borna Jafarpour, Stan Matwin
In our text generation approach, we generate new tweets by replacing words using data acquired from ConceptNet relations in order to increase the size of our training set, this method is very helpful with frustratingly small datasets, preserves the label and increases diversity.
1 code implementation • 9 Aug 2018 • Mohammad Etemad, Amilcar Soares Junior, Stan Matwin
Since the number of features that may be used to predict a user transportation mode can be substantial, finding a subset of features that maximizes a performance measure is worth investigating.
no code implementations • 3 Jun 2018 • Xiang Jiang, Mohammad Havaei, Gabriel Chartrand, Hassan Chouaib, Thomas Vincent, Andrew Jesson, Nicolas Chapados, Stan Matwin
Based on the Model-Agnostic Meta-Learning framework (MAML), we introduce the Attentive Task-Agnostic Meta-Learning (ATAML) algorithm for text classification.
no code implementations • SEMEVAL 2018 • Habibeh Naderi, Behrouz Haji Soleimani, Saif Mohammad, Svetlana Kiritchenko, Stan Matwin
In this paper, we propose a regression system to infer the emotion intensity of a tweet.
no code implementations • 12 Mar 2018 • Fateha Khanam Bappee, Amilcar Soares Junior, Stan Matwin
Our study aims to build a machine learning model for crime prediction using geospatial features for different categories of crime.
no code implementations • 25 Feb 2018 • Ahmad Pesaranghader, Ali Pesaranghader, Stan Matwin, Marina Sokolova
Due to recent technical and scientific advances, we have a wealth of information hidden in unstructured text data such as offline/online narratives, research articles, and clinical reports.
no code implementations • 2 Feb 2018 • Xuan Liu, Xiaoguang Wang, Stan Matwin
We attempt to address this challenge by proposing a technique called CNN-INTE to interpret deep Convolutional Neural Networks (CNN) via meta-learning.
no code implementations • 7 May 2017 • Xiang Jiang, Erico N de Souza, Ahmad Pesaranghader, Baifan Hu, Daniel L. Silver, Stan Matwin
Understanding and discovering knowledge from GPS (Global Positioning System) traces of human activities is an essential topic in mobility-based urban computing.
no code implementations • 24 Feb 2017 • Marina Sokolova, Vera Sazonova, Kanyi Huang, Rudraneel Chakraboty, Stan Matwin
In fully automated studies, we tested two approaches: unsupervised statistical analysis, and supervised text classification based on distributed word representation.
no code implementations • 16 Feb 2017 • Aaron Gerow, Mingyang Zhou, Stan Matwin, Feng Shi
Reflexive regular equivalence can also use the structure of transitivities -- in a network sense -- the contribution of which is controlled by the algorithm's only free-parameter, $\alpha$.
no code implementations • 8 Aug 2016 • Marina Sokolova, Kanyi Huang, Stan Matwin, Joshua Ramisch, Vera Sazonova, Renee Black, Chris Orwa, Sidney Ochieng, Nanjira Sambuli
The tremendous growth of social media content on the Internet has inspired the development of the text analytics to understand and solve real-life problems.