Search Results for author: Houshang Darabi

Found 14 papers, 6 papers with code

Improving Time Series Classification Algorithms Using Octave-Convolutional Layers

no code implementations28 Sep 2021 Samuel Harford, Fazle Karim, Houshang Darabi

In this paper, we experimentally show that by substituting convolutions with OctConv, we significantly improve accuracy for time series classification tasks for most of the benchmark datasets.

Classification Time Series +2

Masking Neural Networks Using Reachability Graphs to Predict Process Events

no code implementations1 Aug 2021 Julian Theis, Houshang Darabi

This paper proposes an approach to further interlock the process model of Decay Replay Mining with its neural network for next event prediction.

Adversarial Attacks on Multivariate Time Series

no code implementations31 Mar 2020 Samuel Harford, Fazle Karim, Houshang Darabi

Classification models for the multivariate time series have gained significant importance in the research community, but not much research has been done on generating adversarial samples for these models.

Classification Dynamic Time Warping +4

Adversarial System Variant Approximation to Quantify Process Model Generalization

2 code implementations26 Mar 2020 Julian Theis, Houshang Darabi

Sequence Generative Adversarial Networks are trained on the variants contained in an event log with the intention to approximate the underlying variant distribution of the system behavior.

Generative Adversarial Network

A Computer-Aided System for Determining the Application Range of a Warfarin Clinical Dosing Algorithm Using Support Vector Machines with a Polynomial Kernel Function

no code implementations21 Mar 2019 Ashkan Sharabiani, Adam Bress, William Galanter, Rezvan Nazempour, Houshang Darabi

Using a sample of 4, 237 patients, we have proposed a companion classification model to one of the most popular dosing algorithms (International Warfarin Pharmacogenetics Consortium (IWPC) clinical model), which identifies the appropriate cohort of patients for applying this model.

General Classification

Decay Replay Mining to Predict Next Process Events

1 code implementation12 Mar 2019 Julian Theis, Houshang Darabi

Recent methods have proposed deep learning techniques such as recurrent neural networks, developed on raw event logs, to predict the next event from a process state.

Insights into LSTM Fully Convolutional Networks for Time Series Classification

4 code implementations27 Feb 2019 Fazle Karim, Somshubra Majumdar, Houshang Darabi

In this paper, we perform a series of ablation tests (3627 experiments) on LSTM-FCN and ALSTM-FCN to provide a better understanding of the model and each of its sub-module.

Classification General Classification +3

Adversarial Attacks on Time Series

2 code implementations27 Feb 2019 Fazle Karim, Somshubra Majumdar, Houshang Darabi

In this paper, we propose utilizing an adversarial transformation network (ATN) on a distilled model to attack various time series classification models.

Classification Dynamic Time Warping +4

Behavioral Petri Net Mining and Automated Analysis for Human-Computer Interaction Recommendations in Multi-Application Environments

no code implementations23 Feb 2019 Julian Theis, Houshang Darabi

Based on users' behavior logs tracked by a Java application suitable for multi-application and multi-instance environments, we demonstrate the applicability for a specific task in a common Windows environment utilizing realistic simulated behaviors of users.

LSTM Fully Convolutional Networks for Time Series Classification

9 code implementations8 Sep 2017 Fazle Karim, Somshubra Majumdar, Houshang Darabi, Shun Chen

We propose the augmentation of fully convolutional networks with long short term memory recurrent neural network (LSTM RNN) sub-modules for time series classification.

General Classification Outlier Detection +3

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