assignments:assignment1
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assignments:assignment1 [2016/08/24 16:11] asa [Your Report] |
assignments:assignment1 [2016/08/27 17:19] asa |
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| * $c_r = c(+1, -1)$, which is the reject cost (the cost of a false negative) | * $c_r = c(+1, -1)$, which is the reject cost (the cost of a false negative) | ||
| * $c_a = c(-1, +1)$, which is the accept cost (the cost of a false positive). | * $c_a = c(-1, +1)$, which is the accept cost (the cost of a false positive). | ||
| + | |||
| + | **Incorporating the cost matrix into computing the error:** (clarification 8/27 at 5:19 pm) | ||
| + | |||
| + | The regular error | ||
| + | $$E(h) = \frac{1}{N}\sum_{i=1}^N I(h(\mathbf{x}_i) \neq y_i)$$ | ||
| + | is now replaced with: | ||
| + | $$E_{cost}(h) = \frac{1}{N}\sum_{i=1}^N c(y_i, h(\mathbf{x}_i)) \cdot I(h(\mathbf{x}_i) \neq y_i)$$ | ||
| With these definitions, answer the following: | With these definitions, answer the following: | ||
assignments/assignment1.txt ยท Last modified: 2016/08/31 19:07 by asa
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