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        | What is an attribute test node? |  | Definition 
 
        | An attribute is a feature of an example. In action decisions, the attribute values are the world state. |  | 
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        | What is a classification of a test node? |  | Definition 
 
        | A classification of an example is its final category. In action decisions, the classification is the action to take. |  | 
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        | What are the cases where a decision tree fails to correctly classify data? |  | Definition 
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        | Identify an example's classification |  | Definition 
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        | What is the difference between an attribute and an attribute values? |  | Definition 
 
        | Attribute - texture Attribute value - slimy, soft
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        | Term 
 
        | What is entropy and how does it work? |  | Definition 
 
        | the measure of discord/how messed up (heterogeneity) among a group of elements. By reducing entropy (increasing homogeneity), we reduce the number of times a bucket must be split, resulting in a more shallow tree. |  | 
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        | **What is the difference between entropy and average entropy? |  | Definition 
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        | How do you derive information from an existing decision tree? |  | Definition 
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        | Term 
 
        | Build a decision tree from a set of data |  | Definition 
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