Cluster-based stability evaluation in time series data sets

G Klassen, M Tatusch, S Conrad - Applied Intelligence, 2023 - Springer
In modern data analysis, time is often considered just another feature. Yet time has a special
role that is regularly overlooked. Procedures are usually only designed for time-independent …

Detection of causally anomalous time-series

M Apte, S Vaishampayan, GK Palshikar - International Journal of Data …, 2021 - Springer
Many complex and important real-life applications, such as surveillance, monitoring and
fraud detection, need to identify entire time-series, from a given collection, as anomalous. In …

Fuzzy clustering stability evaluation of time series

G Klassen, M Tatusch, L Himmelspach… - … Conference on Information …, 2020 - Springer
The discovery of knowledge by analyzing time series is an important field of research. In this
paper we investigate multiple multivariate time series, because we assume a higher …

[PDF][PDF] Towards Extracting Causal Graph Structures from TradeData and Smart Financial Portfolio Risk Management.

P Ravivanpong, T Riedel, P Stock - EDBT/ICDT Workshops, 2022 - ceur-ws.org
Risk managers of asset management companies monitor portfolio risk metrics such as the
Value at Risk in order to analyze and to communicate the risks timely to portfolio managers …

[PDF][PDF] How is your team spirit? Cluster over-time stability evaluation

M Tatusch, G Klassen, M Bravidor… - … conference on machine …, 2020 - researchgate.net
Clustering of time series data is a major part of data mining. In this paper, we consider
multiple multivariate time series and the clustering of their data points per timestamp. One of …

Behave or be detected! Identifying outlier sequences by their group cohesion

M Tatusch, G Klassen, S Conrad - … Conference on Big Data Analytics and …, 2020 - Springer
Since the amount of sequentially recorded data is constantly increasing, the analysis of time
series (TS), and especially the identification of anomalous points and subsequences, is …

Loners stand out. Identification of anomalous subsequences based on group performance

M Tatusch, G Klassen, S Conrad - … 2020, Foshan, China, November 12–14 …, 2020 - Springer
Time series analysis is a part of data mining and nowadays an important field of research
due to the increasing amount of data that is recorded sequentially by various systems …

Clustering of time series regarding their over-time stability

G Klassen, M Tatusch, S Conrad - 2020 IEEE Symposium …, 2020 - ieeexplore.ieee.org
The clustering of time series data is still a challenging task. There are different approaches
which consider either multiple time series or a single one. While some interpret the whole …

Alone We Can Do So Little; Together We Cannot Be Detected

S Korlakov, G Klassen, M Bravidor, S Conrad - Engineering Proceedings, 2022 - mdpi.com
It is no longer possible to imagine our everyday life without time series data. This includes,
for example, market developments, COVID-19 cases, electricity prices, and other data from a …

[PDF][PDF] Alone We Can Do So Little; Together We Cannot Be Detected. Eng. Proc. 2022, 18, 3

S Korlakov, G Klassen, M Bravidor, S Conrad - 2022 - researchgate.net
It is no longer possible to imagine our everyday life without time series data. This includes,
for example, market developments, COVID-19 cases, electricity prices, and other data from a …