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Chapter 57: Data Mining with Analysis Services
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transitions between two items (for example, a pair of web pages), with its associated proba-
bility of that transition happening. Select a node to highlight the possible transitions from
that item to its possible successors. The short arrows that don’t connect to a second node
denote a state that can be its own successor.Neural Network
The neural network algorithm is generally slower than others but often handles more com-
plex situations. You build the network using the output of each layer as the input of the
next layer. Each layer accepts inputs that are combined using weighted functions that
determine the output.The Neural Network Viewer presents a list of characteristics (variable/value combinations)
and how those characteristics favor given outcomes. Choose the two outcomes compared
in the Output section at the upper right of Figure 57-5. Leaving the Input section in the
upper-left blank compares characteristics for the entire population. Figure 57-5 displays
the characteristics that affect the buying decisions of adults 32–38 years of age with no
children.FIGURE 57-5
This is a good example of the Neural Network Viewer.c57.indd 1293c57.indd 1293 7/31/2012 10:35:03 AM7/31/2012 10:35:03 AM
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