Spring 2017

The department runs both a research seminar series with external speakers, as well as a more informal research colloqium that aims to bring together researchers across Edge Hill University.

Research Seminar

Transportation management: On the interplay between optimization and equilibrium problems

Dr Ovidiu Bagdasar, Senior Lecturer in Mathematics, College of Engineering and Technology, Department of Electronics, Computing and Mathematics, University of Derby
Thursday 15th of March 2018, 13.00pm, TechHub Board Room

A dilemma often facing motorists is to choose which route should be taken to realise the fastest (i.e. shortest) journey time. The route choices between an origin and destination might typically be a direct main road, a shorter route through narrow side streets in residential areas, or a longer but (potentially) faster journey using a nearby motorway or ring-road. In the absence of effective traffic control measures, an approximate equilibrium travel time results between the routes available. However, this may not be optimal, as faster overall journey times may have resulted had car drivers allocated themselves differently between the routes. In what has become known as the Braess Paradox, this difference between equilibrium and optimal travel times can lead to the decidedly counter-intuitive result, that additions to road capacity, typically through road construction, lead to slower – not faster – car journey times. Here a transportation model where journey time is the only criteria for route choice is solved by dynamic programming, genetic algorithms and numerical or analytical techniques. Results show close links between solutions of certain (discrete and continuous) optimization and equilibrium problems. The effects induced by closing certain road segments are also investigated.

Research Colloquium

Events, Meta-Knowledge and Extremism – The Adventures of a Text Miner

Dr Raheel Nawaz, School of Computing, Mathematics and Digital Technologies, Manchester Metropolitan University
Thursday 30th of March 2017, 12.30pm, TechHub Lecture Theatre

Part-1: An introduction to event extraction followed by an introduction to meta-knowledge – what is a textual event? How can it de described and extracted? Why is this useful? What is meta-knowledge? Why is it useful?

Part-2: Brief introduction to mining extremist/radical/hate speech. How to identify extremist/radical/hate speech? How to characterise it? How to extract it? Why is it useful?

Can computers understand text? Text mining methods for machine translation, word sense disambiguation and document classification.

Georgios Kontonatsios, Department of Computer Science
Wednesday 25th of January 2017, 1pm, TechHub Meeting Room

Text mining is an emerging field of artificial intelligence that deals with computer processing and understanding of natural language. In this talk, we will cover intelligent text mining approaches that employ rule-based and machine learning methods to make sense of natural language encoded in text. Specifically, we will discuss machine translation methods that are able to translate terms across languages, word sense disambiguation techniques that identify the correct meaning of ambiguous words and text classification methods that determine the topic a given document. Finally, deep learning representation techniques will be introduced that have the potential to further improve the performance of text mining algorithms.

Detecting and Recognising Objects: My Practice in Imagery

Dr Huaizhong Zhang
Wednesday 8th22nd of February 2017, 2pm, TechHub Meeting Room

Object detection, tracking and recognition in images are key problems in computer vision. A variety of techniques have been involved into this scientific domain, particularly variational and stochastic aspects. Referring to my previous studies and activities, this talk provides the audience with a balanced treatment between the theory and practice of relevant methods in the area.
Emphasis on the following points:

  • Statistical based methods for boundary finding
  • Graph based ROI detection in medical images
  • Level sets and PDE for image segmentation
  • Deformable modelling for object detection and reconstruction
  • Deep learning based object recognition and tracking

Data analytics for understanding population movement

Isa Inuwa Dutse, Department of Computer Science
Wednesday 8th of March 2017, 2pm, TechHub Meeting Room

Social media is now an indispensable space that support complex networks and interactions of various users via popular public sites such as Twitter and Facebook. Focus of this talk is on the use of social media data toward understanding aspects of humans livea as discuss in social media space. Consequently, the focus will be on how to explore the social media data pertaining population movement, appropriate method to use and the applicability of text mining related techniques will be presented.

Understanding the impact of introducing climate modelling to a community of users

Pradeep Hewage, Department of Computer Science
Wednesday 29th of March 2017, 2pm, TechHub Meeting Room

Non-predictive or inaccurate weather forecasting can severely impact the farmer’s ability to engage in activities like ploughing, fertilising, cultivating, and others; resulting in a direct impact on the resources that a farmer requires to carry out these operations. This research aims to configure a numerical weather prediction system called Weather and Research Forecasting (WRF) model based on other external parameters and the historical data to obtain an operational, costumes, and more accurate weather prediction system for the farmers. This research requires the combination of the predictive data from WRF output, historical data, physics data from sensor devices which are located across field systems, and farm data to get an intelligent and reactive output for an award-winning precision farming service provider. These data will be collated and used to train a neural network to identify emergent patterns for the purposes of making future predictions, and thereby decisions, informed by historical events.

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