Added liniar regression

predict.py

@@ -0,0 +1,55 @@
+#!/usr/bin/python3
+
+import pickle, re, sys
+from nltk.corpus import stopwords
+
+def clear_post(post):
+    post = post.replace('\\n', ' ')
+    post = re.sub(r'(\(|)(http|https|www)[a-zA-Z0-9\.\:\/\_\=\&\;\?\+\-\%]+(\)|)', ' internetlink ', post)
+    post = re.sub(r'[\.\,\/\~]+', ' ', post)
+    post = re.sub(r'(&lt|&gt|\@[a-zA-Z0-9]+)','',post)
+    post = re.sub(r'[\'\(\)\?\*\"\`\;0-9\[\]\:\%\|\–\”\!\=\^]+', '', post)
+    post = re.sub(r'( \- |\-\-+)', ' ', post)
+    post = re.sub(r' +', ' ', post)
+    post = post.rstrip(' ')
+    post = post.split(' ')
+    stop_words = set(stopwords.words('english'))
+    post_no_stop = [w for w in post if not w in stop_words]
+    return post_no_stop
+
+def calc_prob(posts, weights, word_to_index_mapping):
+    for post in posts:
+        d = post.split(' ')
+        y_hat = weights[0]
+        for token in d:
+            try:
+                y_hat += weights[word_to_index_mapping[token]] * post.count(token)
+            except KeyError:
+                y_hat += 0
+        if y_hat > 0.5:
+            print("1")
+        else:
+            print("0")
+
+def main():
+    if len(sys.argv) != 2:
+        print("Expected model")
+        return
+
+    model = str(sys.argv[1])
+
+    posts = []
+    for line in sys.stdin:
+        text, timestap = line.rstrip('\n').split('\t')
+        post = clear_post(text)
+        posts.append(" ".join(post))
+
+    with open(model, 'rb') as f:
+        pickle_list = pickle.load(f)
+
+    weights = pickle_list[0]
+    lowest_loss_weights = pickle_list[1]
+    word_to_index_mapping = pickle_list[2]
+    calc_prob(posts, weights, word_to_index_mapping)
+
+main()

train.py

@@ -1,5 +1,5 @@
 #!/usr/bin/python3
-import re, sys, pickle, nltk, math, random
+import re, sys, pickle, random
 from nltk.corpus import stopwords
 
 def clear_post(post):
@@ -28,6 +28,9 @@ def create_vocabulary_and_documents(in_file, expected_file):
             posts[" ".join(post)] = int(exp)
             for word in post:
                 vocabulary.add(word)
+    with open('data', 'wb') as f:
+        pickle.dump([vocabulary, posts], f)
+    print("data created")
     return vocabulary, posts
 
 def create_mappings(vocabulary):
@@ -47,14 +50,22 @@ def main():
     model = str(sys.argv[1])
     expected_file = str(sys.argv[2])
     in_file = str(sys.argv[3])
-    vocabulary, posts = create_vocabulary_and_documents(in_file, expected_file)
+    try:
+        with open("data", 'rb') as pos:
+            pickle_list = pickle.load(pos)
+        print("data loaded")
+        vocabulary = pickle_list[0]
+        posts = pickle_list[1]
+    except FileNotFoundError:
+        vocabulary, posts = create_vocabulary_and_documents(in_file, expected_file)
+
     word_to_index_mapping, index_to_word_mapping = create_mappings(vocabulary)
 
     weights = []
     for xi in range(0, len(vocabulary) + 1):
         weights.append(random.uniform(-0.01,0.01))
 
-    learning_rate = 0.000001
+    learning_rate = 0.000000001
     loss_sum = 0.0
     loss_sum_counter = 0
     lowest_loss_sum_weights = []
@@ -62,7 +73,7 @@ def main():
 
     print(f"len of vocabulary {len(vocabulary)}")
     # mozna ustawić na bardzo bardzo duzo
-    while True: #loss_sum_counter != 10:
+    while loss_sum_counter != 10000:
         try:
             d, y = random.choice(list(posts.items()))
             y_hat = weights[0]
@@ -71,13 +82,14 @@ def main():
                 # mozna tez cos pomyslec z count aby lepiej dzialalo
                 #print(f"{d.count(word)} : {word}")
                 y_hat += weights[word_to_index_mapping[word]] * tokens.count(word)
+                #print(f"{weights[word_to_index_mapping[word]]} : {word}")
 
             loss = (y_hat - y)**2
             loss_sum += loss
             delta = (y_hat - y) * learning_rate
             if loss_sum_counter % 100 == 0:
-                print(f"{loss_sum /1000} : {loss_sum_counter} : {y_hat} : {delta}")
+                print(f"{loss_sum_counter} : {loss_sum /1000} : {y_hat} : {delta} : {lowest_loss_sum}")
-                loss_sum_counter = 0
+                #loss_sum_counter = 0
                 loss_sum = 0
 
             weights[0] -= delta
@@ -85,12 +97,14 @@ def main():
                 weights[word_to_index_mapping[word]] -= tokens.count(word) * delta
 
             if lowest_loss_sum > loss_sum and loss_sum != 0:
-                print("it happened")
+                print(f"it happened, new lowest_sum {loss_sum}")
                 lowest_loss_sum = loss_sum
                 lowest_loss_sum_weights = weights
 
             loss_sum_counter +=1
         except KeyboardInterrupt:
             break
-    print(lowest_loss_sum_weights)
+    #print(lowest_loss_sum_weights)
+    with open(model, 'wb') as f:
+        pickle.dump([weights, lowest_loss_sum_weights, word_to_index_mapping], f)
 main()