Statistical Network Modeling Group

This is website http://www.stats.ox.ac.uk/~snijders/stat_net_mod.htm.

This website contains the announcements of an informal group meeting irregularly in Nuffield College about the topic of statistical models for social networks. Anybody interested is welcome.

Organized by Tom Snijders and Johan Koskinen.

Meetings in TT 2014:

Meetings in HT 2014:
  • Week 0: Tuesday January 14, 2.00-3.30 pm Nuffield College, Conference Room L5.
    We start at this day!

  • Week 2: Tuesday January 28, 2.00-3.30 pm Nuffield College, Conference Room L5.

    Roberto Franzosi, a visitor of the Sociology Group in Nuffield, talked about Quantitative Narrative Analysis (QNA), which can be used also for analyzing networks. His interest is in combining a network approach with Geographical Information Systems (GIS).

    Abstract

    Quantitative Narrative Analysis (QNA) is a computer-assisted approach to narrative based on invariant linguistic properties of narrative. Basically, a narrative clause is structured around the 5 Ws of journalism + H: who, what, when, where, why and how (a jingle already known in classical rhetoric as quis, quid, quando, ubi, cur, quem ad modum, quibus adminiculis). It is the who-what-who combination that makes QNA data amenable to network graphs (dynamic graphs with the addition of the when) while the who-what-where makes possible the use of GIS models (again, dynamic with the addition of when) with data that are basically words. I will illustrate these data visualization problems using QNA data gathered from thousands of newspaper articles on the rise of Italian fascism (1919-1922) and on lynchings of African-Americans in Georgia (1875-1930).

  • Week 4: Tuesday February 11, 2.00-3.30 pm Nuffield College, Conference Room L5.

  • Week 6: Tuesday February 25, 2.00-3.30 pm. Nuffield College, Conference Room L5.
    • No meeting!
    Week 8: Tuesday March 11, 2.00-4.00 pm. Nuffield College, Conference Room L5.

    • Zsófia Boda.
    • Robert Hellpap: "Solidarity in Enmity" in inter-ethnic relations: An implementation of multiplex network analysis with SIENA.
    • Sarah Geven (not yet completely sure).

Meetings in MT 2013:

  • Week 0: Tuesday October 8, 2.00-4.00 pm Nuffield College, Exceptional meeting place: Butler Room (D staircase).
    Discussion about whatever new developments have come up.
    Presentations:
    • Zsófia Boda: Negative ties or 'only' the lack of positive ties? Ethnic segregation in secondary school.
    • András Vörös: Defining multidimensional status measures in school settings.
    • Charlotte Greenan: Stochastic imputation for missing behavior variables (and other experiences from the RAND corporation).
  • Week 2: Tuesday October 22, 2.00-4.00 pm Nuffield College, Conference Room L5.
    Speaker: Robert Hellpap.
  • Week 4: Tuesday November 5.
    No meeting!
  • Week 6: Tuesday November 19, 2.00-4.00 pm Nuffield College, Exceptional meeting place: Clay Room (L staircase)
    James Hollway: presentation/discussion.
  • Week 8: Tuesday December 3, 2.00-4.00 pm Nuffield College, Conference Room L5.
    Presenters: Per Block; Cohen Simson.
Meetings in TT 2013:
There will be meetings in weeks 4 and 8.
  • Week 4: Tuesday May 14, 2.00-4.00 pm Nuffield College, Conference Room L5.
    Presentations by Per Block, Zsofia Boda, Andras Voros, and James Hollway
    (preview and discussion of Sunbelt presentations).
    Discussion about progress of RSiena: content, coding, documentation.
  • Week 8: Tuesday June 11, 2.00-4.00 pm Nuffield College, Conference Room L5.
Meetings in MT 2012:
  • Week 0: Tuesday October 2, 2.00-4.00 pm Nuffield College, Conference Room L5.
    First meeting after the summer break. This will be the last meeting, for some time to come, that Josh Lospinoso is with us. We also shall have a guest from Konstanz, Mark Ortmann. The meeting will be devoted to exchanging our network modeling progress over the summer, and discussing with Mark about his plans.
  • Week 2: Tuesday October 16, 2.00-4.00 pm Nuffield College, Conference Room L5.
    Tom Snijders: using sienaGOF and perhaps other RSiena goodies.
  • Week 4: Tuesday October 30, 2.00-4.00 pm Nuffield College, Conference Room L5.
Meetings in TT 2012:
  • Week 2: Tuesday May 1, 2.00-3.30 pm Nuffield College, Conference Room L5.
    Per Block: Gender-specific influence among adolescents with respect to smoking and drinking behaviour.
    3.45-5.00 pm. RSiena coding session.
  • Week 4: Tuesday May 15, 2.00-3.30 pm Nuffield College, Conference Room L5.
    Gareth Cochrane (Belfast) on the Belfast Youth Development Study.
    3.45-5.00 pm. RSiena coding session.
  • Week 6: Tuesday May 29, 2.00-3.30 pm Nuffield College, Conference Room L5.
    Charlotte Greenan on estimation algorithms (as alternative to Robbins-Monro).
    3.45-5.00 pm. RSiena coding session.
  • Week 8: Tuesday June 12, 2.00-3.30 pm Nuffield College, Conference Room L5.
    Nynke Niezink: Models for co-evolution of networks and behavior for continuous behavior variables, modeled by stochastic differential equations.
    3.45-5.00 pm. RSiena coding session.
Meetings in HT 2012:
  • Week 2: Tuesday January 24, 2.00-3.30 pm Nuffield College, Conference Room L5.
    Charlotte Greenan: Innovation diffusion in social networks.
    3.45-5.00 pm. RSiena coding session: new effects in RSiena, unit testing.
  • Week 4: Tuesday February 7, 2.00-3.30 pm Nuffield College, Conference Room L5.
    András Vörös.
    3.45-5.00 pm. RSiena coding session.
  • Week 6: Tuesday February 21, 2.00-3.30 pm. Nuffield College, Conference Room L5.
    Who will speak is still open - Tom, if nobody else wants to.
    3.45-5.00 pm. RSiena coding session.
  • Week 8: Tuesday March 6, 2.00-3.30 pm. Nuffield College, Conference Room L5.
    2.00-2.45 pm. Free discussion.
    3.45-5.00 pm. RSiena coding session.
Meetings in MT 2011:
  • Week 0: Tuesday October 4, 2.30-4.00 pm Nuffield College, Conference Room L5.
    Johan Koskinen, co-author Sten-Åke Stenberg, Models for multilevel analysis of binary response with peer dependencies.
  • Week 2: Tuesday October 18, 2.30-4.00 pm Nuffield College, Conference Room L5.
    Per Block: Multiple identities in the evolution of small social networks.
  • Week 4: Tuesday November 1, 2.00-3.30 pm Nuffield College, Conference Room L5.
    Griffith Rees: Interval censoring with Cox models for spatial diffusion.
    3.45-5.00 pm. RSiena code session.
  • Week 6: Tuesday November 15, 2.00-3.30 pm. Nuffield College, Conference Room L5.
    Discussion about the practical use of the proposals by Natalie Indlekofer (from her talk at the Nuffield-OII social networks seminar on October 24) for parameter interpretation: Which proposals should mainly be recommended for use in applications of Siena?
    3.45-5.00 pm. RSiena code session.
  • Week 8: Tuesday November 29, 2.00-3.30 pm. Nuffield College, Conference Room L5.
    2.00-2.45 pm. Paulina Preciado (preview of talk to be given later in Manchester).
    2.45-3.30 pm. Natalie Indlekofer (report about work she has been doing in Oxford about expressing influence of individual actors on estimates in actor-oriented models).
    3.45-5.00 pm. RSiena code session.
Meetings in TT 2011:
  • Week 2: No meeting,
    (Note: Tom speaks at the Nuffield Sociology Seminar, Wednesday May 11, 5pm, about Micro mechanisms and macro structures of social networks.)
  • Week 4: Tuesday May 24, 2.30-4.00 pm Nuffield College, Conference Room L5.
    Amber Thomas.
  • Week 6: Tuesday June 7, 2.30-4.00 pm. Nuffield College, Conference Room L5.
    Tom Snijders about models for multiple dependent networks.
  • Week 8:Tuesday June 21, 2.30-4.00 pm. Nuffield College, Conference Room L5.
    Steve Manion about his network study of Wikipedia.
Meetings in HT 2011:
  • Week 2: No meeting,
  • Week 4: (Sunbelt conference)
  • Week 6: Tuesday Februart 22, 2.30-4.00 pm. Nuffield College, Conference Room L5.
    Charlotte Greenan.
  • Week 8.
Meetings in MT 2010:
  • Week 2: Workshop on RSiena programming.
  • Week 4: Tuesday November 2, 4.00-5.30 pm. Nuffield College, Conference Room L5.
    Ainhoa de Federico (University of Toulouse - II Le Mirail) and Clair Bidart (CNRS, Laboratoire d'Economie et de Sociologie du Travail, Aix-en-Provence, France):
    Analysis of personal networks I
  • Week 6: Tuesday November 16, 2.30-4.00 pm . Nuffield College, Conference Room L5.
    Miranda Lubbers
    Analysis of personal networks II
  • Week 8: Tuesday November 30, 2.30-4.00 pm Nuffield College, Conference Room L5.
    Josh Lospinoso. Analysis of relational events and time-stamped network data.
Meetings in TT 2010:
(Names of presenters are not unchangeable; topics to be added.)
  • Week 2: Tuesday May 4, 2.30-4.00 pm. Nuffield College, Meeting Room L5.
    Josh Lospinoso.
  • Week 4: Tuesday May 18, 2.30-4.00 pm. Nuffield College, Meeting Room L5.
    Johan Koskinen.
  • Week 6: Tuesday June 1, 2.00-3.30 pm (changed time!). Nuffield College, Meeting Room L5.
    Ruth Ripley.
  • Week 8: no meeting.

Meetings in HT 2010:

  • Week 2: Tuesday January 26, 2.30-4.00 pm. Nuffield College, Meeting Room L5.
    Tom Snijders: Models for dynamics of non-directed networks.
    This will be mainly about Section 3 of the paper Actor-Based Models for Network Dynamics (recently submitted).
  • Week 4: Tuesday February 9, 2.30-4.00 pm. Nuffield College, Meeting Room L5.
    Paulina Preciado Lopez: Distance matters: exploratory analysis of the distance dependency of adolescent friendship dynamics.
  • Week 6: Tuesday February 23, 2.30-4.00 pm. Nuffield College, Meeting Room L5.
    Krista Gile: Inference for Hidden Populations Based on Network Sampling
  • Week 8: Tuesday March 9, 2.30-4.00 pm. Nuffield College, Meeting Room L5.
    Josh Lospinoso: Assessing and correcting parametrizations for time heterogeneity in stochastic actor-based models.
Meetings held in MT 2009:
  • Week 0: Tuesday October 6, 2.30-4.00 pm. Nuffield College, Meeting Room L5.
    Peng Wang (University of Melbourne): the design and source code of PNet.
  • Week 2: Tuesday October 20, 2.30-4.00 pm. Nuffield College, Meeting Room L5.
    Philippa Pattison (University of Melbourne): Some thoughts on specifying and estimating exponential random graph models for large networks.
  • Week 4: Tuesday November 3, 2.30-4.00 pm. Nuffield College, Meeting Room L5.
    Issues related to Network-Based Respondent-Driven Sampling.
    Part 1: Amber Tomas: sensitivity of estimators to network and sampling features;
    Part 2: Krista Gile: a new estimator based on a network model.
  • Week 6: Tuesday November 17.
    Statistical Network Modeling : this was a full-day workshop starting 9.00.
    Nuffield College, Seminar Room.
    The programme can be seen here.
  • Week 8: Tuesday December 1, 2.30-4.00 pm. Nuffield College, Meeting Room L5.
    Viviana Amati: Estimation in Actor-Oriented Network Models by Simulated Generalized Method of Moments.

Meetings held in TT 2009:

  • Week 2: Monday May 4, 3.30-5.00 pm. Nuffield College, Meeting Room L5.
    Johan Koskinen: Extreme actors in ERGMs - towards a model-based centrality measure?
    This talk is based on tech report MelNet_Techreport_08_05.pdf.
  • Week 4: Tuesday May 19, 2.30-4.00 pm. Nuffield College, Meeting Room L5.
    The meeting will start with the discussion about Johan's paper (see above), for which we had no time on May 4.
    Next in this meeting, Bernie Hogan will talk about Real-time network layouts, community detection and alter sampling in personal interviews: Strategies and techniques using the Facebook API.
    A related working paper is A Comparison of On and Offline Networks through the Facebook API. This talk and discussion will be about data collection methods rather than statistical modeling issue, but the organizers like to have a broad definition of this group.
  • Week 6: Tuesday June 2, 2.30-4.00 pm. Nuffield College, Meeting Room L5.
    There will be three topics:
    1. Bridge sampling to estimate likelihood ratios in ERGMs and/or stochastic actor-oriented dynamic networks models (Krista Gile);
    2. Modeling settings and meeting opportunities in stochastic actor-oriented dynamic networks models (Tom Snijders);
    3. Social diffusion models (Griff Rees).