More weather
Watch Ian Witten show how to load a dataset into Weka, and examine it. He explains instances, attributes, and nominal vs numeric attributes.
Key concepts when talking about datasets are instances, attributes, and the class (which is conventionally the last attribute). Attributes can be nominal or numeric (there are also other types). In a classification problem the goal is to produce automatically some kind of model that can determine the class of new instances. These concepts are illustrated using the weather dataset.
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