Semantic network of bioinformatics resources (using method 3 and values shown in Figure 7). Node size represents frequency in the corpus; edge thickness represents how similar the two connected nodes are. Node colour is determined by the semantic class of the node: red for Data, green for Data resource, blue for Algorithm and yellow for Application. (A) The scores based on binary weights. (B) The scores based on tf*idf. The image was generated using Cytoscape (see Figure 6 for further details).