Search Results for author: Lyudmila Mihaylova

Found 17 papers, 4 papers with code

Out-of-distribution Object Detection through Bayesian Uncertainty Estimation

no code implementations29 Oct 2023 Tianhao Zhang, Shenglin Wang, Nidhal Bouaynaya, Radu Calinescu, Lyudmila Mihaylova

The superior performance of object detectors is often established under the condition that the test samples are in the same distribution as the training data.

Object object-detection +1

Scalable Learning With a Structural Recurrent Neural Network for Short-Term Traffic Prediction

1 code implementation3 Mar 2021 Youngjoo Kim, Peng Wang, Lyudmila Mihaylova

With the real traffic speed data measured in the city of Santander, we demonstrate the proposed SRNN outperforms the image-based approaches using the capsule network (CapsNet) by 14. 1% and the convolutional neural network (CNN) by 5. 87%, respectively, in terms of root mean squared error (RMSE).

Semantic Similarity Semantic Textual Similarity +3

Variational Bayesian inference of hidden stochastic processes with unknown parameters

no code implementations2 Nov 2019 Komlan Atitey, Pavel Loskot, Lyudmila Mihaylova

Estimating hidden processes from non-linear noisy observations is particularly difficult when the parameters of these processes are not known.

Bayesian Inference Time Series +1

Structural Recurrent Neural Network for Traffic Speed Prediction

1 code implementation18 Feb 2019 Youngjoo Kim, Peng Wang, Lyudmila Mihaylova

We use a graph of a vehicular road network with recurrent neural networks (RNNs) to infer the interaction between adjacent road segments as well as the temporal dynamics.

Time Series Time Series Analysis +1

Uncertainty propagation in neural networks for sparse coding

no code implementations29 Nov 2018 Danil Kuzin, Olga Isupova, Lyudmila Mihaylova

A novel method to propagate uncertainty through the soft-thresholding nonlinearity is proposed in this paper.

Bayesian Inference

A Capsule Network for Traffic Speed Prediction in Complex Road Networks

1 code implementation23 Jul 2018 Youngjoo Kim, Peng Wang, Yifei Zhu, Lyudmila Mihaylova

Traffic flow data from induction loop sensors are essentially a time series, which is also spatially related to traffic in different road segments.

Time Series Time Series Forecasting

Spatio-Temporal Structured Sparse Regression with Hierarchical Gaussian Process Priors

no code implementations15 Jul 2018 Danil Kuzin, Olga Isupova, Lyudmila Mihaylova

This paper introduces a new sparse spatio-temporal structured Gaussian process regression framework for online and offline Bayesian inference.

Bayesian Inference EEG +3

Ensemble Kalman Filtering for Online Gaussian Process Regression and Learning

no code implementations9 Jul 2018 Danil Kuzin, Le Yang, Olga Isupova, Lyudmila Mihaylova

The ensemble Kalman filter reduces the computational complexity required to obtain predictions with Gaussian processes preserving the accuracy level of these predictions.

Gaussian Processes regression

Structured Sparse Modelling with Hierarchical GP

no code implementations27 Apr 2017 Danil Kuzin, Olga Isupova, Lyudmila Mihaylova

In this paper a new Bayesian model for sparse linear regression with a spatio-temporal structure is proposed.

regression

Learning Methods for Dynamic Topic Modeling in Automated Behaviour Analysis

no code implementations2 Nov 2016 Olga Isupova, Danil Kuzin, Lyudmila Mihaylova

Semi-supervised and unsupervised systems provide operators with invaluable support and can tremendously reduce the operators load.

Dynamic Topic Modeling

Dynamic Hierarchical Dirichlet Process for Abnormal Behaviour Detection in Video

1 code implementation27 Jun 2016 Olga Isupova, Danil Kuzin, Lyudmila Mihaylova

The proposed method is compared with the method based on the non- dynamic Hierarchical Dirichlet Process, for which we also derive the online Gibbs sampler and the abnormality measure.

Decision Making

Anomaly detection in video with Bayesian nonparametrics

no code implementations27 Jun 2016 Olga Isupova, Danil Kuzin, Lyudmila Mihaylova

A novel dynamic Bayesian nonparametric topic model for anomaly detection in video is proposed in this paper.

Anomaly Detection Decision Making +1

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