Merge branch 'master' of ssh://the-cake-is-a-lie.net:20022/jonas/NLP-LAB

Project/naive_approach/naive_approach.py

@@ -15,6 +15,7 @@ from nltk.corpus import wordnet
 import math
 import pprint
 
+from gensim.models import Word2Vec, KeyedVectors
 
 # # Naive Approach
 table = pd.read_csv('../Tools/emoji_descriptions.csv')
@@ -29,25 +30,25 @@ for index, row in table.iterrows():
 # Helper functions
 #######################
 
-def stemming(messages):
+def stemming(message):
-    stemmed_messages = []
     ps = PorterStemmer()
-    for m in messages:
+    words = word_tokenize(message)
-        words = word_tokenize(m)
+    sm = []
-        sm = []
+    for w in words:
-        for w in words:
+        sm.append(ps.stem(w))
-            sm.append(ps.stem(w))
+    stemmed_message = (" ").join(sm)
-        m = (" ").join(sm)
+    return stemmed_message
-        stemmed_messages.append(m)
-    return stemmed_messages
 
 
 # * compare words to emoji descriptions
-def evaluate_sentence(sentence, description_key = 'description', lang = 'eng', emojis_to_consider="all"):
+def evaluate_sentence(sentence, description_key = 'description', lang = 'eng', emojis_to_consider="all", stem=True):
+    # assumes there is a trained w2v model stored in the same directory!
+    wv = KeyedVectors.load("word2vec.model", mmap='r')
     
+    if (stem):
+        sentence = stemming(sentence)
     tokenized_sentence = word_tokenize(sentence)
     n = len(tokenized_sentence)
-    l = table.shape[0]
     matrix_list = []
     
     for index in tableDict.keys():
@@ -57,20 +58,11 @@ def evaluate_sentence(sentence, description_key = 'description', lang = 'eng', e
         mat = np.zeros(shape=(m,n))
         for i in range(len(emoji_tokens)):
             for j in range(len(tokenized_sentence)):
-                syn1 = wordnet.synsets(emoji_tokens[i],lang=lang)
+                try:
-                if len(syn1) == 0:
+                    val = wv.similarity(emoji_tokens[i], tokenized_sentence[j])
-                    continue
+                except KeyError:
-                w1 = syn1[0]
-                #print(j, tokenized_sentence)
-                syn2 = wordnet.synsets(tokenized_sentence[j], lang=lang)
-                if len(syn2) == 0:
-                    continue
-                w2 = syn2[0]
-                val = w1.wup_similarity(w2)
-                if val is None:
                     continue
                 mat[i,j] = val
-        #print(row['character'], mat)
         matrix_list.append(mat)
             
     return matrix_list
@@ -83,10 +75,13 @@ def evaluate_sentence(sentence, description_key = 'description', lang = 'eng', e
 
 # load and preprocess data
 # emojis_to_consider can be either a list or "all"
-def prepareData(stemming=False):
+def prepareData(stem=True, lower=True):
-    if(stemming):
+    if(stem):
         for index in tableDict.keys():
             tableDict[index][1] = stemming(tableDict[index][1])
+    if(lower):
+        for index in tableDict.keys():
+            tableDict[index][1] = tableDict[index][1].lower()
     
     #collect the emojis
     lookup = {}

Project/simple_approach/Continous_Learner.ipynb

@@ -40,7 +40,8 @@
     "import simple_twitter_learning as stl\n",
     "import glob\n",
     "import sys\n",
-    "from sklearn.feature_extraction.text import CountVectorizer, TfidfVectorizer, HashingVectorizer"
+    "from sklearn.feature_extraction.text import CountVectorizer, TfidfVectorizer, HashingVectorizer\n",
+    "import pickle"
    ]
   },
   {
@@ -144,7 +145,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "d304cda50752491da1637b292a9367e8",
+       "model_id": "d00ff918ad4d473499b1e91d4dcb8702",
        "version_major": 2,
        "version_minor": 0
       },
@@ -173,7 +174,8 @@
     "               ],\n",
     "               [\n",
     "                   (widgets.BoundedIntText(value=-1,disabled=True,min=-1, max=10), \"k_means_cluster\"),\n",
-    "                   (widgets.BoundedIntText(value=20,disabled=True,min=-1, max=100), \"n_top_emojis\")\n",
+    "                   (widgets.BoundedIntText(value=20,disabled=True,min=-1, max=100), \"n_top_emojis\"),\n",
+    "                   (widgets.Dropdown(options=[\"latest\", \"mean\"], value=\"latest\"), \"label_criteria\")\n",
     "               ],\n",
     "               [\n",
     "                   (widgets.Button(disabled=True),\"load_data\")\n",
@@ -205,6 +207,7 @@
     "               ],\n",
     "               [\n",
     "                   (widgets.Checkbox(value=True),\"use_doc2vec\"),\n",
+    "                   (widgets.Checkbox(value=True),\"d2v_use_pretrained\"),\n",
     "                   (widgets.IntText(value=100),\"d2v_size\"),\n",
     "                   (widgets.IntText(value=8), \"d2v_window\"),\n",
     "                   (widgets.IntSlider(value=5, min=0, max=32), \"d2v_min_count\")\n",
@@ -444,13 +447,16 @@
     "        if lemm_and_stemm:\n",
     "            p_s = progress_indicator(\"stemming progress\")\n",
     "        \n",
+    "        emoji_mean = shown_widgets[\"label_criteria\"].value == \"mean\"\n",
+    "        \n",
     "        sdm = stl.sample_data_manager.generate_and_read(path=shown_widgets[\"root_path\"].value,\n",
     "                                                    n_top_emojis=shown_widgets[\"n_top_emojis\"].value,\n",
     "                                                    file_range=range(r[0], r[1]),\n",
     "                                                    n_kmeans_cluster=shown_widgets[\"k_means_cluster\"].value,\n",
     "                                                    read_progress_callback=p_r.update,\n",
     "                                                    stem_progress_callback=p_s.update if lemm_and_stemm else None,\n",
-    "                                                    apply_stemming = lemm_and_stemm)\n",
+    "                                                    apply_stemming = lemm_and_stemm,\n",
+    "                                                    emoji_mean=emoji_mean)\n",
     "        shown_widgets[\"batch_size\"].max = len(sdm.labels)\n",
     "        \n",
     "        \n",
@@ -558,9 +564,12 @@
     "        # creating the vectorizer\n",
     "        vectorizer = None\n",
     "        if shown_widgets[\"use_doc2vec\"].value:\n",
-    "            vectorizer = stl.skd2v.Doc2VecTransformer(size=shown_widgets[\"d2v_size\"].value,\n",
+    "            if shown_widgets[\"d2v_use_pretrained\"].value:\n",
-    "                                                     window=shown_widgets[\"d2v_window\"].value,\n",
+    "                vectorizer = pickle.load( open( \"doc2VecModel.p\", \"rb\" ) )\n",
-    "                                                     min_count=shown_widgets[\"d2v_min_count\"].value)\n",
+    "            else:\n",
+    "                vectorizer = stl.skd2v.Doc2VecTransformer(size=shown_widgets[\"d2v_size\"].value,\n",
+    "                                                         window=shown_widgets[\"d2v_window\"].value,\n",
+    "                                                         min_count=shown_widgets[\"d2v_min_count\"].value)\n",
     "        else:\n",
     "            vectorizer=TfidfVectorizer(stop_words='english')\n",
     "        \n",

Project/simple_approach/simple_twitter_learning.py

@@ -28,6 +28,8 @@ nltk.download('punkt')
 nltk.download('averaged_perceptron_tagger')
 nltk.download('wordnet')
 
+from keras import losses
+
 # check whether the display function exists:
 try:
     display
@@ -52,7 +54,6 @@ def sent2emoji(sent_arr, custom_target_emojis=None, only_emoticons=True):
 
 # In[3]:
 
-
 SINGLE_LABEL = True
 
 
@@ -161,7 +162,7 @@ def batch_lemm(sentences):
 
 class sample_data_manager(object):
     @staticmethod
-    def generate_and_read(path:str, only_emoticons=True, apply_stemming=True, n_top_emojis=-1, file_range=None, n_kmeans_cluster=-1, read_progress_callback=None, stem_progress_callback=None):
+    def generate_and_read(path:str, only_emoticons=True, apply_stemming=True, n_top_emojis=-1, file_range=None, n_kmeans_cluster=-1, read_progress_callback=None, stem_progress_callback=None, emoji_mean=False):
         """
         generate, read and process train data in one step.
         
@@ -175,7 +176,7 @@ class sample_data_manager(object):
         @return: sample_data_manager object
         """
         sdm = sample_data_manager(path)
-        sdm.read_files(file_index_range=range(sdm.n_files) if file_range is None else file_range, only_emoticons=only_emoticons, progress_callback=read_progress_callback)
+        sdm.read_files(file_index_range=range(sdm.n_files) if file_range is None else file_range, only_emoticons=only_emoticons, progress_callback=read_progress_callback, emoji_mean=emoji_mean)
         if apply_stemming:
             sdm.apply_stemming_and_lemmatization(progress_callback=stem_progress_callback)
         
@@ -239,7 +240,7 @@ class sample_data_manager(object):
                 # so far filtering for the latest emoji. TODO: maybe there are also better approaches
                 labels_i = emoji2sent([latest(e) for e in emojis_i], only_emoticons=only_emoticons )
             else:
-                labels_i = np.array([np.mean(emoji2sent(e, only_emoticons=only_emoticons), axis=0) for e in emojis_i])
+                labels_i = np.array([np.mean(emoji2sent(e, only_emoticons=only_emoticons), axis=0).tolist() for e in emojis_i])
 
             # and filter out all samples we have no label for:
             wrong_labels = np.isnan(np.linalg.norm(labels_i, axis=1))
@@ -431,7 +432,7 @@ class pipeline_manager(object):
         return pm
     
     @staticmethod
-    def create_keras_pipeline_with_vectorizer(vectorizer, layers, sdm:sample_data_manager, loss=None, optimizer=None):
+    def create_keras_pipeline_with_vectorizer(vectorizer, layers, sdm:sample_data_manager, loss=None, optimizer=None, fit_vectorizer=True):
         '''
         creates pipeline with vectorizer and keras classifier
         
@@ -447,11 +448,12 @@ class pipeline_manager(object):
         from keras.models import Sequential
         from keras.layers import Dense
         
-        if sdm.X is None:
+        if fit_vectorizer:
-            sdm.create_train_test_split()
+            if sdm.X is None:
-        
+                sdm.create_train_test_split()
-        vec_train = vectorizer.fit_transform(sdm.X)
+
-        vec_test = vectorizer.transform(sdm.Xt)
+            vec_train = vectorizer.fit_transform(sdm.X)
+            vec_test = vectorizer.transform(sdm.Xt)
         # creating keras model:
         model=Sequential()
         
@@ -578,7 +580,7 @@ class pipeline_manager(object):
         """fitting the pipeline"""
         self.pipeline.fit(X,y)
     
-    def predict(self,X, use_stemming=True, use_lemmatization=True):
+    def predict(self,X, use_stemming=False, use_lemmatization=False):
         """predict"""
         if use_stemming:
             X = np.array(batch_stem(X))
@@ -608,7 +610,7 @@ class trainer(object):
         self.sdm = sdm
         self.pm = pm
     
-    def fit(self, max_size=10000, disabled_fit_steps=['vectorizer'], keras_batch_fitting_layer=['keras_model'], batch_size=None, n_epochs=1, progress_callback=None):
+    def fit(self, max_size=1000000, disabled_fit_steps=['vectorizer'], keras_batch_fitting_layer=['keras_model'], batch_size=None, n_epochs=1, progress_callback=None):
         """
         fitting data in the pipeline. Because we don't want to refit the vectorizer, the pipeline models containing the vectorizer have to be named explicitly
         
@@ -641,7 +643,12 @@ class trainer(object):
                 named_steps[k].fit = lambda X, y: named_steps[k].train_on_batch(to_dense_if_sparse(X), y) # ← why has keras no sparse support on batch progressing!?!?!
             
         if batch_size is None:
-            self.pm.fit(X = self.sdm.X[:max_size], y = self.sdm.y[:max_size])
+            for e in range(n_epochs):
+                print("epoch", e)
+                self.pm.fit(X = self.sdm.X[:max_size], y = self.sdm.y[:max_size])
+                pred, yt = self.test()
+                mean_squared_error = ((pred - yt)**2).mean(axis=0)
+                print("#" + str(e) + ": validation loss: ", mean_squared_error, "scalar: ", np.mean(mean_squared_error))
         else:
             n = len(self.sdm.X) // batch_size
             for i in range(n_epochs):