Research Activities

Section Research

Interests

Citizen Science, Human Computation, Databases, Web Technologies, Web Services, eCommerce, Web Analytics, Data Analytics, Data Science, (Web) User Profiling, (Web) User Behavior, Explicit User Feedback, Implicit User Feedback, Cognitive Heuristics.

Projects

ARTigo - Social Image Tagging

Art history studies mainly original artworks, but often their reproductions, too. Today, these reproductions exist in substantial electronic repositories certainly amounting to several millions items. What can we do to retrieve these reproductions preferably on the basis of various criteria? As the possibilities of a computerized search of these reproductions are still very limited we allocate keywords, known as metadata. This is a most time-consuming operation and one would need a great number of staff members to do this job. We would appreciate your contribution to this game. However, we don't only want something from you but we offer you as well entertainment and at the same time training as you get to know quite a lot about the paintings shown here. In addition to that, you will be able to work with the descriptions you gave us.

Gugubarra Project and User Profiles

The fundamental idea behind this research area is it to give tools to the owner of a Web portal, that allow him to perform the following tasks:

  • to analyze, to store and to predict the behavior and interest of (registered) visitors of a web site.
  • to group visitor with similar or comparable behavior and/or interest.
  • to offer the visitors personalized E-services based upon the assigned cluster.

Publications

2021

  • Clemens Schefels, Leonard Schlag, Lukas Dreier, Lucas Lincoln, and Markus Steinbach:
    "To Catch Them All: A Generic Approach for Pattern Detection in Time Series Satellite Telemetry Data"
    In: Proceedings of the 16th International Conference on Space Operations (SpaceOps 2021)
    Cape Town, South Africa, Virtual Edition, 3rd-5th of May 2021.
    [online | bibtex]

2018

  • François Bry, Clemens Schefels, and Corina Schemainda:
    "Eine qualitative Analyse der ARTigo-Annotationen"
    In: Computing Art Reader--Einführung in die digitale Kunstgeschichte, arthistoricum.net, 2018
    [online | bibtex]
  • François Bry, Clemens Schefels, and Christoph Wieser:
    "Editorial of a special issue on Human Computation"
    In: Journal it - Information Technology, Volume 60, Issue: 1, pp.1-2, 2018
    [online | bibtex]

2017

  • Martin Bogner, François Bry, Niels Heller, Stephan Leutenmayr, Sebastian Mader, Alexander Pohl, Clemens Schefels, Yingding Wang, and Christoph Wieser:
    "Human Collaboration Reshaped: Applications and Perspectives"
    In: Book "50 Jahre Universitäts-Informatik in München", Chapter 3, pages 47-73, Springer-Verlag, 2017
    [online | bibtex]

2016

  • Clemens Schefels:
    "Eine offene Universität für eine offene Gesellschaft"
    In: oead'news, Volume 2016 - Number 101, OeAD
    [online | pdf | bibtex]
  • Lisa Pettibone, Katrin Vohland, Aletta Bonn, Anett Richter, Wilhelm Bauhus, Birgit Behrisch, Rainer Borcherding, Miriam Brandt, Fran\c{c}ois Bry, Daniel Dörler, Ingrid Elbertse, Falko Glöckler, Claudia Göbel, Susanne Hecker, Florian Heigl, Michael Herdick, Sarah Kiefer, Thekla Kluttig, Elisabeth Kühn, Katarina Kühn, Silke Oldorff, Kristin Oswald, Oliver Röller, Clemens Schefels, Anne Schierenberg, Willi Scholz, Anke Schumann, Andrea Sieber, René Smolarski, Klaus Tochtermann, Wolfgang Wende, and David Ziegler:
    "Citizen Science für alle -- Eine Handreichung für Citizen Science-Beteiligte"
    Research Report,
    GEWISS, 2016
    [pdf | bibtex]

2015

  • François Bry, Corina Schemainda, and Clemens Schefels:
    "A Gaming Ecosystem Crowdsourcing Deep Semantic Annotations"
    Research Report,
    Institute for Informatics, Ludwig-Maximilian University of Munich, 2015
    [pdf | bibtex]

2014

  • Sebastian Mader, Christoph Wieser, François Bry, and Clemens Schefels:
    "BibPad as a Library Service or Crowdsourcing a Library Search Engine"
    In: Book of Abstracts of 6th International Conference on Qualitative and Quantitative Methods in Libraries (QQML2014)
    Istanbul, Turkey, 27th-30th of May 2014
    [pdf | bibtex]

2013

2012

2011

2010

2009

2006

1998

Invited Talks

Review, Editor, and Conference Organisation

  • Review and session co-chair: The 16th International Conference on Space Operations (SpaceOps), Virtual Edition, 3rd of MAy - 5th of May 2021.
  • Review: Journal of Human Computation (HCj), 2019.
  • Editor: Journal it - Information Technology, Special Issue on Human Computation, Volume 60, Issue: 1, 2018.
  • Review: Journal of Intelligent Information Systems (JIIS), 2017.
  • Review: International Journal of Web Information Systems (IJWIS), 2014.
  • Program Committee: The Second International Conference on Data Analytics (DATA ANALYTICS 2013),
    Porto, Portugal, 29th of September - 3rd of October 2013.
  • Program Committee: The First International Conference on Building and Exploring Web Based Environments (WEB 2013),
    Seville, Spain, 27th of January - 1st of February 2013.
  • Program Committee: The Second International Conference on Advanced Collaborative Networks, Systems and Applications (COLLA 2012),
    Venice, Italy, 24th-29th of June 2012.
  • Program Committee and Local Organization: 3rd International Conference on Objects and Databases (ICOODB2010)
    Frankfurt/Main, Germany, 28th-30th of September 2010.
  • Review: 17th European Conference on Information Systems (ECIS2009)
    Verona, Italy, 8th-10th of June 2009.

Teaching Activities

Section Teaching

Lectures, Courses, Exercises

Technical University of Munich (external)

  • Master Practical Course "Resource Forecasting for Satellite Operations Using Multivariate Time Series Data" (2020/2021)
  • Master Practical Course "On-The-Fly Pattern Recognition for Satellite Time Series Data" (2019)

Ludwig Maximilian University of Munich (teaching assistant)

  • Master-Seminar "Citizien Science" (2016/2017)
  • Master Practical Course "Data Analysis with Python" (2016/2017)
  • Programmierung und Modellierung (2016)
  • Softwareentwicklungspraktikum "Python mit dem Raspberry Pi" (2015/2016, 2016)
  • Master-Praktikum "Serious Games" (2015)
  • Softwareentwicklungspraktikum "Urban Games with a Purpose" (2014/2015)
  • Human Computation (2014)
  • Logic and Discrete Structures (2014, 2015)
  • Introduction to Programming (EiP) (2013/2014)

Goethe-University Frankfurt (teaching assistant)

  • Database Systems I (2011/2012, 2009/2010, 2007/2008)
    Slides: Organizational Issues, MySQL, DB2 [ pdf ] (in German)
  • Database Systems II (2010/2011, 2008)
    Slides: Query Execution Path [ pdf ] (in German)
  • Seminar "Information Systems--Web-Technologies for E-Commerce" (2012, 2011, 2010/2011, 2009/2010, 2009, 2008/2009, 2008)
  • Principles of E-Commerce I--Business and Technology (PoE1) (2009)
    Slides: Web-Analytics, Web 2.0 [ pdf ] (in German)
  • Principles of E-Commerce II--E-Services and Business Models for the Web (PoE2) (2008/2009)
    Slides: Web-Analytics, Web 2.0 [ pdf ] (in German)
  • Fundamentals of Programming 2 (PRG-2) (2009, 2008, 2007)

Supervised Theses (Diploma, Master, Bachelor)

2017

  • Daniel Bauersachs: Interactive Association Rule Exploration (BA)
  • Luis Wankmueller: Style Recognition in Paintings using Deep Learning (BA)
  • Matthias Moosburger: Colour Labelling of Art Images Using Colour Palette Recognition (BA)
  • Iris Teske: Crossover - eine (spielende) Einführung in die ARTigo Spiele (BA)
  • Giuliana Dehn: Designing an Interface for Citizen Science Platforms Ensuring a Good User Experience (BA)
  • Tobias Tänzel: Measuring Similarity of Artworks Using Multidimensional Data (MA)

2016

  • Alexander Fischer-Brandies: Explaining Outliers in ARTigo (BA)
  • Frederic Sautter: Association Rule Generation and Evaluation of Interestingness Measures for Artwork Tags (BA)
  • Sebastian Rühl: Event Detection in ARTigo Data (BA)
  • Tien Duc Nguyen: Explorative Cluster Analysis of Artworks for the ARTigo Analytics Center (BA)
  • Martin Bogner: Conception and Implementation of a Collaborative Data Science Platform (MT)
  • Anke Regner: ARTime - spielend Kunstwerke datieren (MT)

2015

  • Franz Siglmüller: Advanced User Interface for Artwork Search Result Presentation (BT)

2014

  • Corina Schemainda: Qualitative Analysis of the ARTigo Gaming Ecosystem (BT)
  • Florian Hoidn: The Analytics Center: Devising a Citizen Science Data Mining Tool for the ARTigo Image Tagging Project (BT)

2012

  • Joanna Pieper, Mitra Shamloo: Ähnlichkeitsgraphen und wichtige Nutzer einer Web-Community (BT)
  • Ines Weimer: Die Qual der Wahl - Welche Faktoren motivieren Web-Shop Kunden zur Bewertung von Produkten (BT)

2011

  • Christian Schöneberger: Integration von Mouse-Tracking-Daten in die Web Analytics Software Gugubarra (BT)
  • Sven Eschenberg: Erfassung von Mausinteraktion auf Webseiten zur Bildung impliziter Nutzerprofile (DT)
  • Elzbieta Sibilska: Eine Fallstudie über explizites Feedback von Web Seiten Besucher (BT)
  • Elzbieta Kunas: Erweiterung impliziter Web Nutzerprofile mit Hilfe von Eye Tracking (BT)

2010

  • Wahid Solaimankhel: Explizites User Feedback für Gugubarra 3.0 (BT)
  • Nevin Polat: Eine Facebook Applikation für den Einsatz im Social Media Marketing (DT)
  • Piotr Pioro: Vorhersage von Web User Interessen mit Hilfe von neuronalen Netzen und Support Vector Machinen (DT)

2008

  • Jia Jia-Kern: Analyse von datenschutzrechtlichen Fragen bezüglich Benutzerprofilbildung im Internet (BT)
  • Matthias Neumann: Freunde finden über Netzwerkgrenzen - Vergleich der Benutzer-Profildaten verschiedener sozialer Netze (BT)
  • Farid Fadavi Husseini: Kundenprofile in CRM & Mobile Geschäftsprozesse für SAP und Black Berry (DT)
  • Sascha Lambert: Userprofilbildung mit Tagging (DT)

2007

  • Yi-Chin Huang: Analysis of AJAX Techniques for Building Interest Profiles on Website Users (DT)

Arduino

Section Arduino

Distance Sensor (HC-SR04)

Layout

circuit diagram circuit board

Source-code

          
#define trig 13
#define echo 12
#define led_grd 8
#define led_blue 9
#define led_green 10
#define led_red 11
#define led_board 13
#define speed false

void setup() {
  Serial.begin(9600);
  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);
  pinMode(led_red, OUTPUT);
  pinMode(led_green, OUTPUT);
  pinMode(led_blue, OUTPUT);
  pinMode(led_grd, OUTPUT);
  digitalWrite(led_grd, LOW);
}

long span, distance, tmp;
int led;

void loop() {
  delayMicroseconds(20);
  digitalWrite(trig, HIGH);
  delayMicroseconds(2);
  digitalWrite(trig, LOW);

  span = pulseIn(echo, HIGH);
  distance = (span / 2) / 29.1;

  if (tmp != distance) {
    digitalWrite(led, LOW);
    digitalWrite(led_board, HIGH);

    if (distance <= 10) led = led_red;
    if (distance > 10) led = led_green;
    if (distance >= 200) led = led_blue;
    if (distance < tmp)
      Serial.println(String("Approaching:  ") += (String(distance) += " cm"));
    if (distance > tmp)
      Serial.println(String("Disappearing: ") += (String(distance) += " cm"));
    # object-speed without signal runtime
    if (speed)
      Serial.println(String("Speed: ") += String(abs(distance - tmp) * 2) += " cm/sec" );
    tmp = distance;
  }

  digitalWrite(led, HIGH);

  if (!speed && distance <= 20 && distance > 3) {
    delay(distance * 12.5);
    digitalWrite(led, LOW);
    delay(distance * 12.5);
  } else delay(480);

  digitalWrite(led_board, LOW);
}