Events and Meetings

The Data Science and Statistics group organises internal meetings, frequently in the form of seminars, with the aim of presenting and discussing ongoing research of its members. Seminars are mainly in the domain (but not limited to) statistics, data mining, machine learning, bioinformatics, mathematical modeling, and optimization.

The meetings’ and seminars’ schedule is also available as an ics feed.

The calendar below reports the schedule of the future and past DSS meetings and seminars.

Events

DSS Business Meeting

Agenda: Business Meetings are for Assist./Assoc./Professors only.

Efficient Management and Analysis of Mobility Data in the Era of Big Data
Seminar
Panagiotis Tampakis (IMADA, SDU)
Thu 30 Sep 2021 at 14:15 IMADA Seminar Room Abstract Permalink

During the last years, the production of enormous volumes of location-aware data, caused by the proliferation of GPS-enabled devices, has posed new challenges in terms of storage, querying, analytics and knowledge extraction from such data. These challenges have become even greater in the era of Big Data, where traditional centralized techniques are not enough to deal with this kind of datasets. A special case of location-aware data, that has attracted a lot of attention by researchers worldwide, are mobility data. In this presentation, we are going to focus on methods for the efficient management and analysis of mobility data. More specifically, we are going to focus on join processing, cluster analysis and predictive analytics, with an ultimate goal to provide the audience a brief overview around the domain mobility data analysis in the era of Big Data.

Mission planning for autonomous drone flight

During the seminar I will be talking about what led me to this PhD position and about the project I am working on. The project aims to develop an autonomous solution for infrastructure inspection. You will be also able to hear more about autonomous robotics and challenges we face when developing autonomous robots.

Digitization projects make cultural heritage data sustainably available and it is up to us to create something new out of it
Seminar
Jakob Kusnick, Stefan Jänicke (IMADA, SDU)
Tue 17 Nov 2020 at 14:15 IMADA Conference Room (Ø18-509-2) Abstract Permalink

Jakob Kusnick is a new PhD student for „Visualization for Digital Humanities“ and will introduce himself by a short overview of his past experience in an interdisciplinary digitization project at the Musical Instrument Museum of Leipzig University in Germany and his research on the edge between musicology and visualization. Together with his supervisor Stefan Jänicke, he will present their expectations for their upcoming research project „InTaVia“ which aims to draw together tangible and intangible assets of European heritage to enable their mutual contextualization.

DSS Business Meeting

Agenda: Business Meetings are for Assist./Assoc./Professors only.

Machine learning for image improvement in real estate
Seminar
Juan Francisco Marín Vega (IMADA, SDU)
Tue 11 Feb 2020 at 14:15 IMADA Methods Lab Abstract Permalink

DSS Christmas Party

Agenda: Networking, problem solving

Conditional marginal expected shortfall
Seminar
Nguyen Khanh Le Ho (IMADA, SDU)
Tue 03 Dec 2019 at 14:15 IMADA Methods Lab Abstract Permalink

A Digital Humanities analysis of religious change in Denmark
Seminar
Niels Reeh (Institut for Historie, SDU)
Tue 19 Nov 2019 at 14:15 IMADA Methods Lab Abstract Permalink

In recent years, new digital technology as well as the the emergence of digital archives have opened up new possibilities in the Religious Studies as well as the Humanities in general. This pilot project proposes a Digital Humanities analysis of religious change and development i Denmark. This project that currently is being developed, will seek to employ digital lexica, sentiments analysis as well as other digital tools in order to analyse historical patterns and shifts within the Danish religious landscape.

Group Lunch

Agenda: TBD

Location Based Social Networks: Recommendation Generation for the Users
Seminar
Pinar Karagöz (Middle East Technical University)
Thu 05 Sep 2019 at 14:15 IMADA seminar room Abstract Permalink

Increasing use of social media and mobile devices lead to the accumulation of more evidence about where people go, what kind of paths they follow, where they are, etc. This evolution led to Location Based Social Networks (LBSN) enabling sharing locations and commenting of locations. Such data that can be obtained from LBSNs enable extraction of patterns about different dimensions of locations and the interaction between people and locations. In this talk, I will focus on generating recommendations for LSBN users, especially context-aware recommendation by using random walk. Additionally, I will talk about recommendations for a group of LBSN users, especially tour recommendations.

Local Intrinsic Dimensionality II: Multivariate Analysis and Distributional Support
Seminar
Michael E. Houle (National Institute of Informatics, Japan)
Tue 16 Jul 2019 at 14:15 IMADA seminar room Abstract Permalink

Researchers have long considered the analysis of similarity applications in terms of the intrinsic dimensionality (ID) of the data. This presentation is concerned with a generalization of a discrete measure of ID, the expansion dimension, to the case of smooth functions in general, and distance distributions in particular. A local model of the ID of smooth functions is first proposed and then explained within the well-established statistical framework of extreme value theory (EVT). Moreover, it is shown that under appropriate smoothness conditions, the cumulative distribution function of a distance distribution can be completely characterized by an equivalent notion of data discriminability. As the local ID model makes no assumptions on the nature of the function (or distribution) other than continuous differentiability, its generality makes it ideally suited for the learning tasks that often arise in data mining, machine learning, and other AI applications that depend on the interplay of similarity measures and feature representations. An extension of the local ID model to a multivariate form will also be presented, that can account for the contributions of different distributional components towards the intrinsic dimensionality of the entire feature set, or equivalently towards the discriminability of distance measures defined in terms of these feature combinations. The talk will conclude with a discussion of recent applications of local ID to deep learning.

Density-Based Methods for Data Analysis: Some Recent Developments and Future Perspectives
Seminar
Ricardo J. G. B. Campello (University of Newcastle)
Tue 11 Jun 2019 at 14:15 DIAS conference room Abstract Permalink

Non-parametric density estimates are a useful tool for tackling different problems in statistical learning and data mining, most noticeably in the unsupervised and semi-supervised learning scenarios. In this talk, I elaborate on HDBSCAN, a density-based framework for hierarchical and partitioning clustering, outlier detection, and data visualisation. Since its introduction in 2015, HDBSCAN has gained increasing attention from both researchers and practitioners in data mining, with computationally efficient third-party implementations already available in major open-source software distributions such as R/CRAN and Python/SciKit-learn, as well as successful real-world applications reported in different fields. I will discuss the core HDBSCAN* algorithm and its interpretation from a non-parametric modelling perspective as well as from the perspective of graph theory. I will also discuss post-processing routines to perform hierarchy simplification, cluster evaluation, optimal cluster selection, visualisation, and outlier detection. Finally, I briefly survey a number of unsupervised and semi-supervised extensions of the HDBSCAN* framework currently under development along with students and collaborators, as well as some topics for future research.

Seminar
Group Meeting
Georgios Kaiafas (University of Luxembourg)
Thu 23 May 2019 at 13:00 IMADA Methods Lab Abstract Permalink

research presentation

Seminar

Yuri Goegebeur: research presentation

Group Lunch

Agenda: TBD

DSS Social Gathering

Agenda: Networking, problem solving

Group Lunch

Agenda: TBD

Seminar

Sangramsing Nathusing Kayte: Overview on NLP-related research

Group Lunch

Agenda: TBD

Seminar

Peter Schneider-Kamp: Research Issues with Drones

Group Lunch

Agenda: TBD

Seminar

Jonatan Møller Gøttcke, Class Imbalance and Probabilistic Learning in k-Nearest-Neighbor Classification

Group Lunch

Agenda: TBD

Group Meeting

Agenda: TBD