@conference {326, title = {Neural-Symbolic Learning and Reasoning: Contributions and Challenges}, booktitle = {AAAI 2015 Spring Symposium on Knowledge Representation and Reasoning: Integrating Symbolic and Neural Approaches. Technical Report SS-15-03, AAAI Press, Palo Alto}, year = {2015}, publisher = {AAAI Press}, organization = {AAAI Press}, author = {Artur S. d{\textquoteright}Avila Garcez and Tarek R. Besold and Luc De Raedt and Peter F{\"o}ldiak and Pascal Hitzler and Thomas Icard and Kai-Uwe K{\"u}hnberger and Lu{\'\i}s C. Lamb and Riisto Miikkulainen and Daniel L. Silver} }