The scans also showed that the imagery task performed after ayahuasca intake was associated with increased activity in the parahippocampal gyrus, which is involved in retrieval of autobiographical memories and encoding of contextual knowledge, and the frontopolar prefrontal cortex, which is implicated in working memory and imaging future events.
The first idea allows a predictive system to be very accurate and to express complex discriminative decisions; the second idea allows a natural and flexible encoding of background knowledge.
However, constructing such a learning agent currently requires manual encoding of prior domain knowledge; in addition to being a poor model of human acquisition of prior knowledge, manual knowledge-encoding is both time-consuming and error-prone.
The positive correlation between patent applications and the flow of publications suggests that patents and papers encode similar pieces of knowledge, and patents do not crowd out the level of scientific publications [ 16, 17].
Inheritance hierarchies provide a simple encoding of common sense knowledge.
The key issue was not so much the algorithm, but rather the encoding of the necessary knowledge to guide this search.
Given a formal encoding of the background knowledge and a set of examples, an ILP system will derive hypotheses which explain all the positive examples and none, or almost none, of the negative examples.
In particular, given a network encoding our knowledge of signal transduction and a dataset measuring the activation of proteins in this network on various perturbations, one can derive from the network (Boolean) logic models fitted to the data.
They do not involve the costly manual encoding of linguistic or clinical/medical knowledge by experts as required in knowledge-based approaches, nor do they involve equally costly investments in large-scale manual annotation and corpus construction as required for supervised learning.
