After S8's initial proposal for a node describing belief propagation on March 14, 2020, on March 17, S4 proposed an improvement to the node which added more description explaining important aspects of the process. This interaction showed how students can work together to better refine and develop a concept they learned.

On the same day that S4 made their proposal to improve S8's node, S4 also made two more child nodes of this node that further explored this concept. This shows how people can build off of explanations that other people have proposed to further expand the information.

University of Michigan - Ann Arbor

In order to understand Bayesian networks, individuals have collaborated together to create nodes about related concepts.

On March 14, 2020, S8 explained gave a general overview of belief propagation and gave a simple overview of its definition and connection to Bayesian networks. However, this general overview was likely not sufficient enough to fully understand the significance of this concept. 3 days after the initial proposal, on March 17, S4 then added more information on the details of the process, allowing for node to have more cohesive information. On the same day, S4 then made two more child nodes relating to this concept. With the addition of the new proposals, the presentation of belief propagation became more cohesive and better organized specific details pertaining to this topic.

An interesting point to note is that on the same day S8 created the node on belief propagation, they also created a child node that contained a picture showcasing with belief propagation, but did not include an explanation. However, almost 8 days later,  on March 22, S8 proposed an improvement to add a description explaining the steps in the image. Although not confirmed, it could be possible that S4's proposal on S8's node, prompted them to reassess their learning and presentation of the information and therefore want to improve their node to be more informative.

1Cademy Nodes for Bayesian Networks Analysis

Belief Propagation Nodes Student-Student Collaboration Analysis

S4 was able to improve S8's initial node by editing their proposed explanation and adding more detail to it. This allowed the information to be updated to be more cohesive and a better descriptive explanation of the concept. The system allowed for students to help others through editing their nodes and also helped improve the information so that other students can learn from these nodes more effectively.

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