user: What is the answer to life, the universe, and everything?

assistant: 42

user: Without quoting directly from the text give me a summary of what a restricted Boltzmann machine is?

assistant: A restricted Boltzmann machine (RBM) is a category of an artificial neural network invented by Paul Smolensky and popularized by Geoffrey Hinton. RBM's have been useful in various applications within the field of machine learning and can be trained in supervised and unsupervised ways.

RBMS is a restricted variant of Boltzmann machines that constrains their neurons; a pair of nodes from each of the two groups of neurons, visible and hidden forming a bipartite graph. Connection can only be between two groups and not within groups (visible and hidden). This constrained formulation results in the ability to more efficiently train algorithms. 

RBM's can also be integrated into deep learning networks such as deep belief networks with options to fine tune those networks using gradient descent and backpropagation.

user: Who is Laika and why is she famous?

assistant: Laika was one of the first animals in space and the first one to orbit the space. She was sent into the outer space by the Soviet Union. She died of overheating hours into the flight while the spacecraft carrying her was in the orbit.