amend me

1 files changed, 16 insertions, 1 deletions

diff --git a/src/model.py b/src/model.py
index f777b16..47a660c 100644
--- a/src/model.py
+++ b/src/model.py
@@ -6,6 +6,18 @@ class Model:
         for _ in range(epoch):
             theta = theta - alpha * self.gradient(xs, ys)
 
+    def train_against(self, xs, ys, theta, one, alpha, epoch):
+        ys_ally = ys.copy()
+        ys_ally[ys == one] = 0
+        ys_ally[ys != one] = 1
+        return gradient_descent(xs, ys_ally, theta, alpha, epoch)
+
+    def train_thetas(xs, ys, theta, alpha=1, epoch=1000):
+        thetas = []
+        for i in np.unique(ys):
+            thetas.append(train_against(xs, ys, theta, i, alpha, epoch))
+            return thetas
+
     def gradient(self, xs, ys):
         return np.array([self.partial(xs, ys, i) for i in range(len(self.theta))])
 
@@ -18,8 +30,11 @@ class Model:
                 total += temp
                 return total / len(xs)
 
+    def predict(self, x):
+        return 1 if self.hypothesis(x) >= 0.5 else 0
+
     def hypothesis(self, x):
-        return 1 if  self._sigmoid(x.dot(self.theta)) >= 0.5 else 0
+        return self._sigmoid(x.dot(self.theta))
 
     def logloss(self, x, y):
         if y == 1: