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Towards probabilistic multiclass classification of gamma-ray sources 伽玛射线源的概率多类分类
GI-Jahrestagung Pub Date : 2022-09-21 DOI: 10.18420/inf2022_39
D. Malyshev, Aakash Bhat
{"title":"Towards probabilistic multiclass classification of gamma-ray sources","authors":"D. Malyshev, Aakash Bhat","doi":"10.18420/inf2022_39","DOIUrl":"https://doi.org/10.18420/inf2022_39","url":null,"abstract":"Machine learning algorithms have been used to determine probabilistic classifications of unassociated sources. Often classification into two large classes, such as Galactic and extra-galactic, is considered. However, there are many more physical classes of sources. For example, there are 23 classes in the latest Fermi-LAT 4FGL-DR3 catalog. In this note we subdivide one of the large classes into two subclasses in view of a more general multi-class classification of gamma-ray sources. Each of the three large classes still encompasses several of the physical classes. We compare the performance of classifications into two and three classes. We calculate the receiver operating characteristic curves for two-class classification, where in case of three classes we sum the probabilities of the sub-classes in order to obtain the class probabilities for the two large classes. We also compare precision, recall, and reliability diagrams in the two- and three-class cases.","PeriodicalId":434189,"journal":{"name":"GI-Jahrestagung","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122278669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Radio Galaxy Classification with wGAN-Supported Augmentation 支持wgan增强的射电星系分类
GI-Jahrestagung Pub Date : 2022-06-30 DOI: 10.18420/inf2022_38
J. Kummer, L. Rustige, F. Griese, K. Borras, Marcus Brüggen, P. Connor, F. Gaede, G. Kasieczka, P. Schleper
{"title":"Radio Galaxy Classification with wGAN-Supported Augmentation","authors":"J. Kummer, L. Rustige, F. Griese, K. Borras, Marcus Brüggen, P. Connor, F. Gaede, G. Kasieczka, P. Schleper","doi":"10.18420/inf2022_38","DOIUrl":"https://doi.org/10.18420/inf2022_38","url":null,"abstract":": Novel techniques are indispensable to process the flood of data from the new generation of radio telescopes. In particular, the classification of astronomical sources in images is challenging. Morphological classification of radio galaxies could be automated with deep learning models that require large sets of labelled training data. Here, we demonstrate the use of generative models, specifically Wasserstein GANs (wGAN), to generate artificial data for different classes of radio galaxies. Subsequently, we augment the training data with images from our wGAN. We find that a simple fully-connected neural network for classification can be improved significantly by including generated images into the training set.","PeriodicalId":434189,"journal":{"name":"GI-Jahrestagung","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131124439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Chameleon: A Semi-AutoML framework targeting quick and scalable development and deployment of production-ready ML systems for SMEs 变色龙:一个半自动框架，旨在为中小企业快速、可扩展地开发和部署生产就绪的机器学习系统
GI-Jahrestagung Pub Date : 2021-05-08 DOI: 10.18420/informatik2021-097
J. Otterbach, Thomas Wollmann
{"title":"Chameleon: A Semi-AutoML framework targeting quick and scalable development and deployment of production-ready ML systems for SMEs","authors":"J. Otterbach, Thomas Wollmann","doi":"10.18420/informatik2021-097","DOIUrl":"https://doi.org/10.18420/informatik2021-097","url":null,"abstract":"Developing, scaling, and deploying modern Machine Learning solutions remains challenging for small- and middle-sized enterprises (SMEs). This is due to a high entry barrier of building and maintaining a dedicated IT team as well as the difficulties of real-world data (RWD) compared to standard benchmark data. To address this challenge, we discuss the implementation and concepts of Chameleon, a semi-AutoML framework. The goal of Chameleon is fast and scalable development and deployment of production-ready machine learning systems into the workflow of SMEs. We first discuss the RWD challenges faced by SMEs. After, we outline the central part of the framework which is a model and loss-function zoo with RWD-relevant defaults. Subsequently, we present how one can use a templatable framework in order to automate the experiment iteration cycle, as well as close the gap between development and deployment. Finally, we touch on our testing framework component allowing us to investigate common model failure modes and support best practices of model deployment governance.","PeriodicalId":434189,"journal":{"name":"GI-Jahrestagung","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128593693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Innovation by Information Technology Recombination: How Artificial Intelligence Progressive Web Apps Foster Sustainable Development 信息技术重组的创新:人工智能渐进式网络应用如何促进可持续发展
GI-Jahrestagung Pub Date : 2021-01-01 DOI: 10.18420/informatik2021-114
Philipp Fukas, Oliver Thomas
{"title":"Innovation by Information Technology Recombination: How Artificial Intelligence Progressive Web Apps Foster Sustainable Development","authors":"Philipp Fukas, Oliver Thomas","doi":"10.18420/informatik2021-114","DOIUrl":"https://doi.org/10.18420/informatik2021-114","url":null,"abstract":"• ACM Digital Library (https://dl.acm.org/) • AIS Electronic Library (https://aisel.aisnet.org/) • EBSCO Host (https://search.ebscohost.com) • Emerald Insight (https://www.emerald.com/insight/) • Google Scholar (https://scholar.google.de/) • IEEE Xplore (https://ieeexplore.ieee.org/Xplore/home.jsp) • Science Direct (https://www.sciencedirect.com/) • Springer Link (https://link.springer.com/) • Web of Science (https://webofscience.com/) • Wiley Online Library (https://onlinelibrary.wiley.com/)","PeriodicalId":434189,"journal":{"name":"GI-Jahrestagung","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122083654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Towards a Flexible Framework for Algorithmic Fairness 一个灵活的算法公平框架
GI-Jahrestagung Pub Date : 2020-10-15 DOI: 10.18420/inf2020_09
P. Hacker, Emil Wiedemann, Meike Zehlike
{"title":"Towards a Flexible Framework for Algorithmic Fairness","authors":"P. Hacker, Emil Wiedemann, Meike Zehlike","doi":"10.18420/inf2020_09","DOIUrl":"https://doi.org/10.18420/inf2020_09","url":null,"abstract":"Increasingly, scholars seek to integrate legal and technological insights to combat bias in AI systems. In recent years, many different definitions for ensuring non-discrimination in algorithmic decision systems have been put forward. In this paper, we first briefly describe the EU law framework covering cases of algorithmic discrimination. Second, we present an algorithm that harnesses optimal transport to provide a flexible framework to interpolate between different fairness definitions. Third, we show that important normative and legal challenges remain for the implementation of algorithmic fairness interventions in real-world scenarios. Overall, the paper seeks to contribute to the quest for flexible technical frameworks that can be adapted to varying legal and normative fairness constraints.","PeriodicalId":434189,"journal":{"name":"GI-Jahrestagung","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128089574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Content-based Recommendations for Radio Stations with Deep Learned Audio Fingerprints 基于内容的深度学习音频指纹广播电台推荐
GI-Jahrestagung Pub Date : 2020-07-15 DOI: 10.18420/inf2020_38
Stefan Langer, Liza Obermeier, André Ebert, Markus Friedrich, Emma Munisamy, Claudia Linnhoff-Popien
{"title":"Content-based Recommendations for Radio Stations with Deep Learned Audio Fingerprints","authors":"Stefan Langer, Liza Obermeier, André Ebert, Markus Friedrich, Emma Munisamy, Claudia Linnhoff-Popien","doi":"10.18420/inf2020_38","DOIUrl":"https://doi.org/10.18420/inf2020_38","url":null,"abstract":"The world of linear radio broadcasting is characterized by a wide variety of stations and played content. That is why finding stations playing the preferred content is a tough task for a potential listener, especially due to the overwhelming number of offered choices. Here, recommender systems usually step in but existing content-based approaches rely on metadata and thus are constrained by the available data quality. Other approaches leverage user behavior data and thus do not exploit any domain-specific knowledge and are furthermore disadvantageous regarding privacy concerns. Therefore, we propose a new pipeline for the generation of audio-based radio station fingerprints relying on audio stream crawling and a Deep Autoencoder. We show that the proposed fingerprints are especially useful for characterizing radio stations by their audio content and thus are an excellent representation for meaningful and reliable radio station recommendations. Furthermore, the proposed modules are part of the HRADIO Communication Platform, which enables hybrid radio features to radio stations. It is released with a flexible open source license and enables especially small- and medium-sized businesses, to provide customized and high quality radio services to potential listeners.","PeriodicalId":434189,"journal":{"name":"GI-Jahrestagung","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127066110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development and Application of KPIs for the Evaluation of the Control Reserve Supply by a Cross-border Renewable Virtual Power Plant 跨境可再生虚拟电厂控制备用供电评价kpi的开发与应用
GI-Jahrestagung Pub Date : 2019-09-23 DOI: 10.18420/inf2019_69
Julia Strahlhoff, A. Liebelt, Stefan Siegl, S. Camal
{"title":"Development and Application of KPIs for the Evaluation of the Control Reserve Supply by a Cross-border Renewable Virtual Power Plant","authors":"Julia Strahlhoff, A. Liebelt, Stefan Siegl, S. Camal","doi":"10.18420/inf2019_69","DOIUrl":"https://doi.org/10.18420/inf2019_69","url":null,"abstract":"In an increasingly decentralised energy system with a rising share of fluctuating renewable energy sources, such as wind energy and photovoltaics (PV), the importance of virtual power plants (VPP) for the provision of ancillary services is growing. Transmission system operators (TSOs) impose stringent requirements on the reliability and accurate controllability of power plants that are susceptible to qualify for control reserve provision. It needs to be discussed whether these requirements have to evolve to enable the participation of renewables in control reserve markets. As part of the REstable research project, an innovative ICT infrastructure was set up for linking German and French wind and PV farms in a transnational VPP. Key performance indicators (KPIs) derived from technical requirements of the German TSOs are proposed and applied to quantify the quality of control reserve provision by the VPP in physical field tests","PeriodicalId":434189,"journal":{"name":"GI-Jahrestagung","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131910894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Modellierung erweiterter Beziehungen zwischen dem Start und dem Ende von Aktivitäten in Geschäftsprozessen 创建基于业务过程的扩展关系
GI-Jahrestagung Pub Date : 2019-09-01 DOI: 10.18420/inf2019_ws38
T. Bauer
{"title":"Modellierung erweiterter Beziehungen zwischen dem Start und dem Ende von Aktivitäten in Geschäftsprozessen","authors":"T. Bauer","doi":"10.18420/inf2019_ws38","DOIUrl":"https://doi.org/10.18420/inf2019_ws38","url":null,"abstract":"Der Kontrollfluss eines Geschaftsprozesses (GP) definiert die zulassigen Ausfuhrungsreihenfolgen von Aktivitaten. Dieser bezieht sich heutzutage jedoch ausschlieslich auf gesamte Aktivitaten. Dies soll erweitert werden: Die Verwendung einzelner Start- und Endeereignisse von Aktivitaten bei der Kontrollfluss-Modellierung ermoglicht zusatzliche Ausfuhrungsreihenfolgen. Kann beispielsweise festgelegt werden, dass das Ende der Akt. A vor dem Ende der Akt. B erfolgen muss, so erhoht dies die Flexibilitat in einem Process-aware Information System (PAIS), weil die Akt. B fruher gestartet werden kann, als bei einer klassischen Sequenzkante. In diesem Beitrag werden entsprechende Praxisbeispiele vorgestellt und daraus Anforderungen an die Modellierung von GP abgeleitet. Auserdem wird diskutiert, wie diese Abhangigkeiten in einem \u0000GP-Modellierungswerkzeug graphisch dargestellt werden konnen.","PeriodicalId":434189,"journal":{"name":"GI-Jahrestagung","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134024935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influences in Forecast Errors for Wind and Photovoltaic Power: A Study on Machine Learning Models 风电和光伏发电预测误差的影响:基于机器学习模型的研究
GI-Jahrestagung Pub Date : 2019-05-31 DOI: 10.18420/inf2019_74
Jens Schreiber, Artjom Buschin, B. Sick
{"title":"Influences in Forecast Errors for Wind and Photovoltaic Power: A Study on Machine Learning Models","authors":"Jens Schreiber, Artjom Buschin, B. Sick","doi":"10.18420/inf2019_74","DOIUrl":"https://doi.org/10.18420/inf2019_74","url":null,"abstract":"Despite the increasing importance of forecasts of renewable energy, current planning studies only address a general estimate of the forecast quality to be expected and selected forecast horizons. \u0000However, these estimates allow only a limited and highly uncertain use in the planning of electric power distribution. More reliable planning processes require considerably more information about future forecast quality. \u0000In this article, we present an in-depth analysis and comparison of influencing factors regarding uncertainty in wind and photovoltaic power forecasts, based on four different machine learning (ML) models. \u0000In our analysis, we found substantial differences in uncertainty depending on ML models, data coverage, and seasonal patterns that have to be considered in future planning studies.","PeriodicalId":434189,"journal":{"name":"GI-Jahrestagung","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123827042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Die Blockchain im Spannungsfeld der Grundsätze der Datenschutzgrundverordnung 隐私隐私原则在边上的干扰
GI-Jahrestagung Pub Date : 2017-09-28 DOI: 10.18420/in2017_105
Ninja Marnau
{"title":"Die Blockchain im Spannungsfeld der Grundsätze der Datenschutzgrundverordnung","authors":"Ninja Marnau","doi":"10.18420/in2017_105","DOIUrl":"https://doi.org/10.18420/in2017_105","url":null,"abstract":"Blockchain-Technologie und auf ihr basierende Smart Contracts erleben aktuell grose Aufmerksamkeit. Egal ob Finanztransaktionen, eHealth oder eGovernment, fur zahlreiche Anwendungsfelder wird der Einsatz von Blockchain-Technologie vorgeschlagen. In jungster Zeit mehren sich jedoch auch kritische Stimmen, die die kryptographischen und Konsens-Prinzipien dieser Technologie fur unvereinbar mit der Verarbeitung personenbezogener Daten und somit den Grundsatzen des Datenschutzrechts halten. Ziel dieses Beitrags ist es, die Eignung verschiedener Blockchain-Technologien fur die Erfullung der Grundsatze der Verarbeitung personenbezogener Daten gemas Artikel 5 der EU Datenschutzgrundverordnung wie u.a. Rechenschaftspflicht, Speicherbegrenzung und Betroffenenrechten zu analysieren.","PeriodicalId":434189,"journal":{"name":"GI-Jahrestagung","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114065557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
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