Academic degrees

PhD (2014), MSc (2009) and BSc (2007), all in Computer Science and Engineering, from the Instituto Superior Técnico (IST), the engineering school of the University of Lisbon, Portugal.


I am a postdoctoral researcher with Francisco C. Santos and Ana Paiva at INESC-ID Lisboa's GAIPS group. Previously, I was a PhD student with Andreas Wichert at the same institute.

My research is presently funded by a research stimulus (FCT Incentivo) grant, awarded by the Portuguese Fundação para a Ciência e Tecnologia (contract Incentivo/EEI/LA0021/2014).


Journal articles
Sacramento J, Wichert A, van Rossum MCW (2015). Energy efficient sparse connectivity from imbalanced synaptic plasticity rules.
PLOS Computational Biology, to appear.
Rendeiro D, Sacramento J, Wichert A (2014). Taxonomical associative memory.
Cognitive Computation, vol. 6, no. 1, pp. 45-65.
[ abstract ]
Sacramento J, Wichert A (2012). Binary Willshaw learning yields high synaptic capacity for long-term familiarity memory.
Biological Cybernetics, vol. 106, no. 2, pp. 123-133.
[ abstract | pdf | ps.gz ]
Sacramento J, Burnay F, Wichert A (2012). Regarding the temporal requirements of a hierarchical Willshaw network.
Neural Networks, vol. 25, pp. 84-93.
[ abstract | pdf | ps.gz ]
Sacramento J, Wichert A (2011). Tree-like hierarchical associative memory structures.
Neural Networks, vol. 24, no. 2, pp. 143-147.
[ abstract | pdf | ps.gz ]
Poster presentations
Sacramento J, Wichert A, Santos FC, van Rossum MCW (2015). One-class learning in networks.
OCCAM 2015 (upcoming), Osnabrück, Germany.
Sacramento J, van Rossum MCW (2014). Imbalanced synaptic plasticity rules lead to energy efficient connectivity.
Neuroscience 2014, SfN's 44th annual meeting, Washington DC, USA.
[ abstract ]

Talks and public seminars

Efficient storage and retrieval of memories in neural networks (December 2014).
Public PhD thesis defense, Instituto Superior Técnico, Lisbon, Portugal.
Learning with imbalanced plasticity and the information vs. efficiency dilemma (November 2013).
Invited talk, Institute for Adaptive and Neural Computation, School of Informatics, University of Edinburgh, UK.
Synaptic capacities for recognition memory (April 2012).
Invited talk, Institute for Adaptive and Neural Computation, School of Informatics, University of Edinburgh, UK.

Supervised theses

Diogo Rendeiro (2011). Taxonomic associative memory.
MSc thesis, Department of Computer Science and Engineering, Technical University of Lisbon.
Jointly supervised with Andreas Wichert.


I also regularly serve as a teaching assistant at the Department of Computer Science and Engineering of IST, where I have been lecturing practical classes on computer programming and basic algorithms.