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Fig. 2 | Cybersecurity

Fig. 2

From: Evaluation indicators for open-source software: a review

Fig. 2

This is the correlation between the indicators evaluated above. The color of one node represents the out-degree of the node, and the size of one node represents the in-degree of the node. Out-degree indicates the number of edges connected from a node. In-degree indicates the number of edges attached to a node. The color of the node transforms from dark pink to white and even to green. The heavier the pink of the node, the lower its in-degree. And, the heavier the green of the node, the higher its in-degree. What’s more, the larger the size of the node, the higher its out-degree. There are also different colors of edges, such as yellow, orange, and blue. The color of the edge depends on the weight of the correlation of two nodes. If the correlation is a positive impact, the color of the edge is a warm color; Otherwise, the color is a cold color

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