Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Einsatz von Social Networks Analysis im E-Learning

1,252 views

Published on

Ein Bild sagt mehr als 1000 Worte. Ansprechende Visualisierungen von Online-Netzwerken ermöglichen die Darstellung großer Datenmengen und das Erkennen von Zusammenhängen, die sonst vielleicht im Datenmaterial verloren gingen.
Ich erläutere Grundlagen der Social Network Analysis, basierend auf meinem Lernprozess im MOOC „Social Network Analysis“ im Herbst 2014 (Coursera, Univ. of Michigan, Lada Adamic) und stelle Modelle und wichtige Parameter der Social Network Analysis vor sowie erste Erfahrungen mit der Anwendung dieser Visualisierungen auf meine Online-Gruppen.

Published in: Education
  • Sie können Hilfe bekommen bei ⇒ www.WritersHilfe.com ⇐. Erfolg und Grüße!
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
  • DOWNLOAD THE BOOK INTO AVAILABLE FORMAT (New Update) ......................................................................................................................... ......................................................................................................................... Download Full PDF EBOOK here { https://urlzs.com/UABbn } ......................................................................................................................... Download Full EPUB Ebook here { https://urlzs.com/UABbn } ......................................................................................................................... Download Full doc Ebook here { https://urlzs.com/UABbn } ......................................................................................................................... Download PDF EBOOK here { https://urlzs.com/UABbn } ......................................................................................................................... Download EPUB Ebook here { https://urlzs.com/UABbn } ......................................................................................................................... Download doc Ebook here { https://urlzs.com/UABbn } ......................................................................................................................... ......................................................................................................................... ................................................................................................................................... eBook is an electronic version of a traditional print book THE can be read by using a personal computer or by using an eBook reader. (An eBook reader can be a software application for use on a computer such as Microsoft's free Reader application, or a book-sized computer THE is used solely as a reading device such as Nuvomedia's Rocket eBook.) Users can purchase an eBook on diskette or CD, but the most popular method of getting an eBook is to purchase a downloadable file of the eBook (or other reading material) from a Web site (such as Barnes and Noble) to be read from the user's computer or reading device. Generally, an eBook can be downloaded in five minutes or less ......................................................................................................................... .............. Browse by Genre Available eBOOK .............................................................................................................................. Art, Biography, Business, Chick Lit, Children's, Christian, Classics, Comics, Contemporary, CookBOOK, Manga, Memoir, Music, Mystery, Non Fiction, Paranormal, Philosophy, Poetry, Psychology, Religion, Romance, Science, Science Fiction, Self Help, Suspense, Spirituality, Sports, Thriller, Travel, Young Adult, Crime, EBOOK, Fantasy, Fiction, Graphic Novels, Historical Fiction, History, Horror, Humor And Comedy, ......................................................................................................................... ......................................................................................................................... .....BEST SELLER FOR EBOOK RECOMMEND............................................................. ......................................................................................................................... Blowout: Corrupted Democracy, Rogue State Russia, and the Richest, Most Destructive Industry on Earth,-- The Ride of a Lifetime: Lessons Learned from 15 Years as CEO of the Walt Disney Company,-- Call Sign Chaos: Learning to Lead,-- StrengthsFinder 2.0,-- Stillness Is the Key,-- She Said: Breaking the Sexual Harassment Story THE Helped Ignite a Movement,-- Atomic Habits: An Easy & Proven Way to Build Good Habits & Break Bad Ones,-- Everything Is Figureoutable,-- What It Takes: Lessons in the Pursuit of Excellence,-- Rich Dad Poor Dad: What the Rich Teach Their Kids About Money THE the Poor and Middle Class Do Not!,-- The Total Money Makeover: Classic Edition: A Proven Plan for Financial Fitness,-- Shut Up and Listen!: Hard Business Truths THE Will Help You Succeed, ......................................................................................................................... .........................................................................................................................
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
  • DOWNLOAD THE BOOK INTO AVAILABLE FORMAT (New Update) ......................................................................................................................... ......................................................................................................................... Download Full PDF EBOOK here { https://urlzs.com/UABbn } ......................................................................................................................... Download Full EPUB Ebook here { https://urlzs.com/UABbn } ......................................................................................................................... Download Full doc Ebook here { https://urlzs.com/UABbn } ......................................................................................................................... Download PDF EBOOK here { https://urlzs.com/UABbn } ......................................................................................................................... Download EPUB Ebook here { https://urlzs.com/UABbn } ......................................................................................................................... Download doc Ebook here { https://urlzs.com/UABbn } ......................................................................................................................... ......................................................................................................................... ................................................................................................................................... eBook is an electronic version of a traditional print book THE can be read by using a personal computer or by using an eBook reader. (An eBook reader can be a software application for use on a computer such as Microsoft's free Reader application, or a book-sized computer THE is used solely as a reading device such as Nuvomedia's Rocket eBook.) Users can purchase an eBook on diskette or CD, but the most popular method of getting an eBook is to purchase a downloadable file of the eBook (or other reading material) from a Web site (such as Barnes and Noble) to be read from the user's computer or reading device. Generally, an eBook can be downloaded in five minutes or less ......................................................................................................................... .............. Browse by Genre Available eBOOK .............................................................................................................................. Art, Biography, Business, Chick Lit, Children's, Christian, Classics, Comics, Contemporary, CookBOOK, Manga, Memoir, Music, Mystery, Non Fiction, Paranormal, Philosophy, Poetry, Psychology, Religion, Romance, Science, Science Fiction, Self Help, Suspense, Spirituality, Sports, Thriller, Travel, Young Adult, Crime, EBOOK, Fantasy, Fiction, Graphic Novels, Historical Fiction, History, Horror, Humor And Comedy, ......................................................................................................................... ......................................................................................................................... .....BEST SELLER FOR EBOOK RECOMMEND............................................................. ......................................................................................................................... Blowout: Corrupted Democracy, Rogue State Russia, and the Richest, Most Destructive Industry on Earth,-- The Ride of a Lifetime: Lessons Learned from 15 Years as CEO of the Walt Disney Company,-- Call Sign Chaos: Learning to Lead,-- StrengthsFinder 2.0,-- Stillness Is the Key,-- She Said: Breaking the Sexual Harassment Story THE Helped Ignite a Movement,-- Atomic Habits: An Easy & Proven Way to Build Good Habits & Break Bad Ones,-- Everything Is Figureoutable,-- What It Takes: Lessons in the Pursuit of Excellence,-- Rich Dad Poor Dad: What the Rich Teach Their Kids About Money THE the Poor and Middle Class Do Not!,-- The Total Money Makeover: Classic Edition: A Proven Plan for Financial Fitness,-- Shut Up and Listen!: Hard Business Truths THE Will Help You Succeed, ......................................................................................................................... .........................................................................................................................
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
  • DOWNLOAD THE BOOK INTO AVAILABLE FORMAT (New Update) ......................................................................................................................... ......................................................................................................................... Download Full PDF EBOOK here { https://urlzs.com/UABbn } ......................................................................................................................... Download Full EPUB Ebook here { https://urlzs.com/UABbn } ......................................................................................................................... Download Full doc Ebook here { https://urlzs.com/UABbn } ......................................................................................................................... Download PDF EBOOK here { https://urlzs.com/UABbn } ......................................................................................................................... Download EPUB Ebook here { https://urlzs.com/UABbn } ......................................................................................................................... Download doc Ebook here { https://urlzs.com/UABbn } ......................................................................................................................... ......................................................................................................................... ................................................................................................................................... eBook is an electronic version of a traditional print book THE can be read by using a personal computer or by using an eBook reader. (An eBook reader can be a software application for use on a computer such as Microsoft's free Reader application, or a book-sized computer THE is used solely as a reading device such as Nuvomedia's Rocket eBook.) Users can purchase an eBook on diskette or CD, but the most popular method of getting an eBook is to purchase a downloadable file of the eBook (or other reading material) from a Web site (such as Barnes and Noble) to be read from the user's computer or reading device. Generally, an eBook can be downloaded in five minutes or less ......................................................................................................................... .............. Browse by Genre Available eBOOK .............................................................................................................................. Art, Biography, Business, Chick Lit, Children's, Christian, Classics, Comics, Contemporary, CookBOOK, Manga, Memoir, Music, Mystery, Non Fiction, Paranormal, Philosophy, Poetry, Psychology, Religion, Romance, Science, Science Fiction, Self Help, Suspense, Spirituality, Sports, Thriller, Travel, Young Adult, Crime, EBOOK, Fantasy, Fiction, Graphic Novels, Historical Fiction, History, Horror, Humor And Comedy, ......................................................................................................................... ......................................................................................................................... .....BEST SELLER FOR EBOOK RECOMMEND............................................................. ......................................................................................................................... Blowout: Corrupted Democracy, Rogue State Russia, and the Richest, Most Destructive Industry on Earth,-- The Ride of a Lifetime: Lessons Learned from 15 Years as CEO of the Walt Disney Company,-- Call Sign Chaos: Learning to Lead,-- StrengthsFinder 2.0,-- Stillness Is the Key,-- She Said: Breaking the Sexual Harassment Story THE Helped Ignite a Movement,-- Atomic Habits: An Easy & Proven Way to Build Good Habits & Break Bad Ones,-- Everything Is Figureoutable,-- What It Takes: Lessons in the Pursuit of Excellence,-- Rich Dad Poor Dad: What the Rich Teach Their Kids About Money THE the Poor and Middle Class Do Not!,-- The Total Money Makeover: Classic Edition: A Proven Plan for Financial Fitness,-- Shut Up and Listen!: Hard Business Truths THE Will Help You Succeed, ......................................................................................................................... .........................................................................................................................
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
  • DOWNLOAD THE BOOK INTO AVAILABLE FORMAT (New Update) ......................................................................................................................... ......................................................................................................................... Download Full PDF EBOOK here { https://urlzs.com/UABbn } ......................................................................................................................... Download Full EPUB Ebook here { https://urlzs.com/UABbn } ......................................................................................................................... Download Full doc Ebook here { https://urlzs.com/UABbn } ......................................................................................................................... Download PDF EBOOK here { https://urlzs.com/UABbn } ......................................................................................................................... Download EPUB Ebook here { https://urlzs.com/UABbn } ......................................................................................................................... Download doc Ebook here { https://urlzs.com/UABbn } ......................................................................................................................... ......................................................................................................................... ................................................................................................................................... eBook is an electronic version of a traditional print book THE can be read by using a personal computer or by using an eBook reader. (An eBook reader can be a software application for use on a computer such as Microsoft's free Reader application, or a book-sized computer THE is used solely as a reading device such as Nuvomedia's Rocket eBook.) Users can purchase an eBook on diskette or CD, but the most popular method of getting an eBook is to purchase a downloadable file of the eBook (or other reading material) from a Web site (such as Barnes and Noble) to be read from the user's computer or reading device. Generally, an eBook can be downloaded in five minutes or less ......................................................................................................................... .............. Browse by Genre Available eBOOK .............................................................................................................................. Art, Biography, Business, Chick Lit, Children's, Christian, Classics, Comics, Contemporary, CookBOOK, Manga, Memoir, Music, Mystery, Non Fiction, Paranormal, Philosophy, Poetry, Psychology, Religion, Romance, Science, Science Fiction, Self Help, Suspense, Spirituality, Sports, Thriller, Travel, Young Adult, Crime, EBOOK, Fantasy, Fiction, Graphic Novels, Historical Fiction, History, Horror, Humor And Comedy, ......................................................................................................................... ......................................................................................................................... .....BEST SELLER FOR EBOOK RECOMMEND............................................................. ......................................................................................................................... Blowout: Corrupted Democracy, Rogue State Russia, and the Richest, Most Destructive Industry on Earth,-- The Ride of a Lifetime: Lessons Learned from 15 Years as CEO of the Walt Disney Company,-- Call Sign Chaos: Learning to Lead,-- StrengthsFinder 2.0,-- Stillness Is the Key,-- She Said: Breaking the Sexual Harassment Story THE Helped Ignite a Movement,-- Atomic Habits: An Easy & Proven Way to Build Good Habits & Break Bad Ones,-- Everything Is Figureoutable,-- What It Takes: Lessons in the Pursuit of Excellence,-- Rich Dad Poor Dad: What the Rich Teach Their Kids About Money THE the Poor and Middle Class Do Not!,-- The Total Money Makeover: Classic Edition: A Proven Plan for Financial Fitness,-- Shut Up and Listen!: Hard Business Truths THE Will Help You Succeed, ......................................................................................................................... .........................................................................................................................
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
  • Be the first to like this

Einsatz von Social Networks Analysis im E-Learning

  1. 1. WS: Einsatz von Social Network Analysis ! ! 11.3.2015 ! Jutta Pauschenwein ZML-Innovative Lernszenarien FH JOANNEUM
  2. 2. 2
  3. 3. Trainingsgruppe - nach 10 Tagen 3
  4. 4. Agenda • Definitionen und Begriffe der Social Network Analysis • Visualisierungssoftware • Daten • Visualisierung von Online-Gruppen 4
  5. 5. 5 Coursera MOOC: 8 Wochen, Herbst 2014
  6. 6. ! Warum SNA? ! • Verstehen durch Visualisieren Definitionen • Netzwerk: Set von verbunden Knoten (sozial: durch Beziehungen verbunden) • Knoten: Personen, Orte … (nodes, actors, sites, vertices) • Verbindungen: Beziehungen (edges, ties, relations) • Netzwerke können als Graphen dargestellt werden 6
  7. 7. Fragen, Betrachtungsweisen Zur Netzwerkstruktur • Sind die Knoten miteinander verbunden? Wie weit sind sie voneinander entfernt? Sind einige Knoten wichtiger als andere? Gibt es im Netzwerk Communities? Formen von Netzwerken • Zufallsgenerierte oder bevorzugte Verbindungen, Kleine-Welt- Netzwerke 7
  8. 8. • Verbindungen im Netzwerk sind gerichtet/orientiert oder un-gerichtet • Die Verbindung kann ein „Gewicht“ haben. • Ein Knoten kann mehrere Verbindungen haben - Grad (degree) A kommuniziert mit B A kommuniziert mit B und umgekehrt A kommuniziert 4mal mit B Verbindungen 8 Kommunikation einer Studierendengruppe auf google+ 4 Tage
  9. 9. Erdős-Rényi Graph • einfaches Netzwerkmodell mit fixer Knotenanzahl • Annahme 1: Knoten verbinden sich zufällig • Annahme 2: Netzwerk ist ungerichtet • Annahme 3: N Knoten, M Verbindungen, p Wahrscheinlichkeit, dass sich zwei Knoten verbinden • es erscheinen keine „Hubs“ (sehr gut verbundene Knoten), aber „Giant Component“ 9
  10. 10. reale Netzwerke wachsen Erweiterungen des Erdős-Rényi Ansatzes • wachsende Netzwerke, etwa das WWW, Citation Network Modelle • Random Preferential: neue Knoten verbinden sich lieber mit gut vernetzten Knoten • Introduction Model: Knoten werden einander „vorgestellt“ • Static Geographic Model: Knoten verbinden sich mit den Nachbarn der mit ihnen verbundenen Knoten 10
  11. 11. Barabasi-Albert Modell • jeder Knoten verbindet sich mit anderen Knoten mit einer gewissen Wahrscheinlichkeit abhängig von seinem Grad (wie viele Verbindungen der Knoten selbst hat) • der Prozess startet mit einer Anfangskonfiguration • jeder neue Knoten kommt mit einer Möglichkeit von m Verbindungen zum Netzwerk 11
  12. 12. Zentralität / Centrality Welche Rolle spielen die Knoten im Netzwerk? wichtiger Parameter: average shortest path ! ! ! ! Freeman’s formula for centralization 12
  13. 13. 13 Degree Centrality - Grad-Zentralität Knoten mit hoher Grad-Zentralität sind aktive Player im Netzwerk, gut vernetzt
  14. 14. 14 Betweeness Centrality - Betweeness- Zentralität „Broker“ - über diesen Knoten läuft alle Kommunikation links nach rechts und umgekehrt Fällt dieser Knoten aus dem Netzwerk, bricht die Verbindung zusammen
  15. 15. 15 Closeness - Nähe Die Entfernung dieses Knoten zu allen anderen - es reicht nahe einem gut vernetzten Knoten (Hub) zu sein
  16. 16. 16 Eigenvector Centrality - Eigenvektor- Zentralität Ein Knoten ist umso wichtiger, je wichtiger seine Nachbarn sind.
  17. 17. Communities finden Was macht eine Community / Substruktur aus? • Es gibt viele Verbindungen innerhalb der Community • Jede/r andere ist nur ein paar Hops entfernt • Knoten derselben Community sind stark miteinander verbunden Auffinden von Communities ist schwierig, Anzahl der Communities unbekannt, kleine / große Communities • minimum cut: vorgeschriebene Anzahl von Gruppen, die möglichst wenig miteinander verbunden sind • hierarchisches Clustern: Clustern nach gewissen Eigenschaften • betweennes Clustering: Verbindungen mit höchster Betweenness werden gelöscht 17
  18. 18. 18 Problem: wann hört man auf, Verbindungen zu löschen? ! => Modularität - Vergleich, wie viele Verbindungen es innerhalb / außerhalb der Community gibt ! In einem Netzwerk wachsen die Verbindungen innerhalb eine Community, während sie zu Knoten außerhalb abnehmen http://spark-public.s3.amazonaws.com/sna/other/guess/betweennessclust.html
  19. 19. 19 3 Communities meiner FB-Freunde
  20. 20. Visualisierungssoftware Netlogo! • programmable modeling environment for simulating natural and social phenomena • Free, open source - cross-platform: runs on Mac, Windows, Linux, et al • https://ccl.northwestern.edu/netlogo Gephi! • interactive visualization and exploration platform for networks and complex systems, dynamic and hierarchical graphs. • Runs on Windows, Linux and Mac OS X. Gephi is open-source and free. • http://gephi.github.io/ 20
  21. 21. Visualisierung von Online- Gruppen: Daten Berufsbegleitend Studierende WS 14/15 4 Tage im November 2014 Google+ Händische Zuordnung 21 „Knoten“-Tabelle „Verbindungen“-Tabelle
  22. 22. „Nur“ vier Tage: Kommunikationsverhalten einzelner und der Gruppe Eine Person ist aktiver als die Lehrenden vorzeigen mit gephi 22
  23. 23. Visualisierung von Online- Gruppen Berufsbegleitend Studierende WS 14/15 3 Wochen Online-Sozialisierung Moodle - Interaktion: wer antwortet wem Interaktionen mit sich selbst wurden gelöscht 23 Knotengröße gemäß Grad / Degree ! Farbe gemäß Betweenness
  24. 24. Gleiche Gruppe Gesamter Austausch während eines Semesters 24 Knotengröße gemäß Grad / Degree ! Farbe gemäß Betweenness vorzeigen mit gephi
  25. 25. Gleiche Gruppe Gesamter Austausch während eines Semesters 25 4 Communities
  26. 26. Visualisierung von Online- Gruppen Trainingskurs 14/15 1 Semester Moodle - Interaktion: wer antwortet wem Interaktionen mit sich selbst wurden gelöscht 26 Knotengröße gemäß Grad / Degree ! Farbe gemäß Betweenness 2 Communities
  27. 27. Mein Fazit • Die SNA gibt mit eine neue Einsicht in meine Online- Gruppen (Broker, Communities), die ich allerdings noch nicht ganz verstehe …. • SNA hat ein großes Potential, ist jedoch auch recht komplex • Mit dem aktuellen Datenmaterial: weitere Beschäftigung mit den Optionen von Gephi • Zukunft: weitere Beschäftigung mit der Datengenerierung (etwa cope15 MOOC, Twitter, Facebook, Google+) 27

×