On the same dataset from the previous question, suppose you train a classifier that achieves the following behavior. of those documents that are actually spam, the classifier is accurate on 95% of them. of those documents that are really ham, the classifier is accurate on 50% of them. what is the precision of this system at detecting spam?

When paul realizes no one is coming to the rwandan refugees, he tells them there is only one way for them to get . what is it?

The process of rocks breaking down and becoming other rocks

The controlled use of fire by hominids: (a) limited the expansion of hominids into certain environments, such as dry grasslands. (b) decreased the amount of food energy available in the hominid diet. (c) contributed to geographical expansion and food production techniques in positive ways. (d) has been shown to contribute little to the digestive process of hominids.