I recently started at a new postdoc position in the IAS Research Centre for Life, Mind and Society at the University of the Basque Country, funded by a postdoc grant from this university.
I will be working with Ezequiel Di Paolo in my postdoc project ‘Information Theory and Maximum Entropy Modelling in Embodied Organisms’.
Last week I defended my PhD dissertation entitled ‘Interaction Dynamics and Autonomy in Cognitive Systems’. It was a beautiful and intense experience for closing four years of work. The thesis was examined by Ricard Solé, Ezequiel di Paolo and Seth Bullock, which provided several points of discussion for a rich and stimulating debate about the contributions of the dissertation and lines of further development.
I should thank Manuel Bedia, Xabier Barandiaran and Francisco Serón for their extraordinary work as supervisors and collaborators, as well as many other people that has supported the work developed in this dissertation.
The complete dissertation can be freely downloaded from here:
Also, you can check the video of the defence and the slides of the presentation:
Some time ago I published a paper with Arnau Monterde, Antonio Calleja-López, Xabier Barandiaran y John Postill about collective identities in the 15M and related networked movements. We argue that the 15M movement in Spain demands conceptual and methodological innovations. Its rapid emergence, endurance, diversity, multifaceted development and adaptive capacity, posit numerous theoretical and methodological challenges. We show how the use of structural and dynamic analysis of interaction networks (in combination with qualitative data) is a valuable tool to track the shape and change of what we term the ‘systemic dimension’ of collective identities in network-movements. We show how the 15M movement displays a specific form of systemic collective identity we call ‘multitudinous identity’ , characterized by social transversality and internal heterogeneity, as well as a transient and distributed leadership driven by action initiatives. Our approach attends to the role of distributed interaction and transient leadership at a mesoscale level of organizational dynamics, which may contribute to contemporary discussions of collective identity in network-movements.
Monterde, A., Calleja-López, A., Aguilera, M., Barandiaran, X. E., & Postill, J. (2015). Multitudinous identities: a qualitative and network analysis of the 15M collective identity. Information, Communication and Society, doi: 10.1080/1369118X.2015.1043315
It’s been some time since I started to develop a model of relational in a robot’s oscillatory neural controller. For a couple of years I have been intermittently working in a simulated agent in a behavioural preference task controlled by a homeostatic oscillator network, in which the relational variable that is kept constant is the phase relation between one oscillator and its surroundings.
During the last year I have been working in different results around this model, and some of the first results are already published in this paper in PLOS ONE. In this paper (written together with Xabier Barandiaran, Manuel Bedia and Paco Serón), we analyse long-range correlations in the form of 1/f noise and self-organized criticality in the agent’s behaviour, and its relation with synaptic plasticity and sensorimotor coupling. We show that the emergence of self-organized criticality and 1/ƒ noise in our model is the result of three simultaneous conditions: a) non-linear interaction dynamics capable of generating stable collective patterns, b) internal plastic mechanisms modulating the sensorimotor flows, and c) strong sensorimotor coupling with the environment that induces transient metastable neurodynamic regimes. When one of these conditions is not met, a robust critical regime is unable to emerge.
I just came back from attending to the ANN SONIC Conference at Los Angeles. I was invited together with Javier Toret by Manuel Castells to present some of the results we have been developing during the last year at the DatAnalysis15M research network.
We presented an analysis of how new large-scale models of social/political organization that have emerged during the last years around the Spanish 15M movement. We described two different types of large-scale organization: a first phase where crowds learn to strategically use social media and other digital tools to modulate collective action, massive emotional contagion and focus of swarm attention; and a second phase where some parts of the network start developing a strong functional specialization (e.g. the PAH network focused on foreclosure evictions, Marea Verde focused in public education, etc.), creating a ecosystem which gives place to the emerge of a long-term robust network organization based on transient moments synchronization, in a similar way of how the dynamic core hypothesis suggest neural self-organization works.
You can see here the slides of our presentation here.
Together with Manuel Bedia, Xabier Barandiaran and Bruno Santos I just published in Frontiers in Computational Neuroscience a paper entitled ‘The situated HKB model: how sensorimotor spatial coupling can alter oscillatory brain dynamics’. This paper explores the role of a situated and embodied interaction with the world in the patterns of neural oscillation. This is explored in what we call the situated HKB model: a robotic model that performs a gradient climbing task and whose “brain” is modeled by the HKB equation. With this model we can precisely quantify and qualitatively describe how the properties of the system, when studied in coupled conditions, radically change in a manner that cannot be deduced from the decoupled ‘brain’ alone.
Aguilera, M, Bedia, M.G., Santos, B.A., Barandiaran, X.E. (2013). The Situated HKB Model: how sensorimotor spatial coupling can alter oscillatory brain dynamics. Frontiers in Computational Neuroscience 7 (2013): 117. doi:10.3389/fncom.2013.00117.
I just got back from the 12th European Conference on Artificial Life, where a presented two different contributions. As well, I attended to some very interesting contributions. One of them was the ‘Artificial Life in Massive Data Flow‘ workshop, where there was presented a very interesting perspective about analyzing huge amounts of data with vast number of dimensions from a complex systems perspective, beyond the simplifications of ‘Big Data’ perspectives.
My first contribution, Quantifying Political Self-Organization in Social Media. Fractal patterns in the Spanish 15M movement on Twitter, with Ignacion Morer, Xabier Barandiaran and Manuel Bedia, was based in the work we have been doing with the Datanalysis15M research network. We have tried to quantify the levels of political self-organization in Twitter data related with the 15M movement by characterizing bursts of self-organized criticality.
The second contribution, Analysis of ultrastability in small dynamical recurrent neural networks, with Eduardo Izquierdo and Randall Beer, is a very interesting research line Eduardo is developing exploring some issues about implementing Ashby’s Ultrastability in a biologically plausible way. I had the opportunity to collaborate with him for this paper during my research visit at Indiana University.