Aula 1/Projeto_ML_aula1.ipynb

{"cells":[{"cell_type":"markdown","metadata":{"id":"uOxsWL4fyQ2J"},"source":["# Aula 1 - Classificação: o que é e como funciona?"]},{"cell_type":"markdown","metadata":{"id":"LsoUVpNWyQ2M"},"source":["## 1.1 - Apresentação\n"]},{"cell_type":"markdown","metadata":{"id":"vuZVqaVCyQ2M"},"source":["## 1.2 - Importando os dados"]},{"cell_type":"code","execution_count":null,"metadata":{"id":"EcFx0fP0yQ2N"},"outputs":[],"source":["import pandas as pd"]},{"cell_type":"code","execution_count":null,"metadata":{"id":"jMxgxTXnyQ2O"},"outputs":[],"source":["dados = pd.read_csv('/content/sample_data/Customer-Churn.csv')"]},{"cell_type":"code","execution_count":null,"metadata":{"colab":{"base_uri":"https://localhost:8080/"},"id":"neE16a7wyQ2O","executionInfo":{"status":"ok","timestamp":1652934137465,"user_tz":180,"elapsed":7,"user":{"displayName":"Ana Clara 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\n","4            0     Nao         Nao                2          Sim   \n","\n","  VariasLinhasTelefonicas ServicoDeInternet SegurancaOnline BackupOnline  \\\n","0    SemServicoTelefonico               DSL             Nao          Sim   \n","1                     Nao               DSL             Sim          Nao   \n","2                     Nao               DSL             Sim          Sim   \n","3    SemServicoTelefonico               DSL             Sim          Nao   \n","4                     Nao       FibraOptica             Nao          Nao   \n","\n","  SeguroNoDispositivo SuporteTecnico TVaCabo StreamingDeFilmes TipoDeContrato  \\\n","0                 Nao            Nao     Nao               Nao    Mensalmente   \n","1                 Sim            Nao     Nao               Nao          UmAno   \n","2                 Nao            Nao     Nao               Nao    Mensalmente   \n","3                 Sim            Sim     Nao               Nao          UmAno   \n","4                 Nao            Nao     Nao               Nao    Mensalmente   \n","\n","  PagamentoOnline FormaDePagamento  ContaMensal Churn  \n","0             Sim    ChequeDigital        29.85   Nao  \n","1             Nao      ChequePapel        56.95   Nao  \n","2             Sim      ChequePapel        53.85   Sim  \n","3             Nao    DebitoEmConta        42.30   Nao  \n","4             Sim    ChequeDigital        70.70   Sim  "],"text/html":["\n","  <div id=\"df-d3a10733-9f3b-4484-a6dd-b95154bc1918\">\n","    <div class=\"colab-df-container\">\n","      <div>\n","<style scoped>\n","    .dataframe tbody tr th:only-of-type {\n","        vertical-align: middle;\n","    }\n","\n","    .dataframe tbody tr th {\n","        vertical-align: top;\n","    }\n","\n","    .dataframe thead th {\n","        text-align: right;\n","    }\n","</style>\n","<table border=\"1\" class=\"dataframe\">\n","  <thead>\n","    <tr style=\"text-align: right;\">\n","      <th></th>\n","      <th>Maior65Anos</th>\n","      <th>Conjuge</th>\n","      <th>Dependentes</th>\n","      <th>MesesDeContrato</th>\n","      <th>TelefoneFixo</th>\n","      <th>VariasLinhasTelefonicas</th>\n","      <th>ServicoDeInternet</th>\n","      <th>SegurancaOnline</th>\n","      <th>BackupOnline</th>\n","      <th>SeguroNoDispositivo</th>\n","      <th>SuporteTecnico</th>\n","      <th>TVaCabo</th>\n","      <th>StreamingDeFilmes</th>\n","      <th>TipoDeContrato</th>\n","      <th>PagamentoOnline</th>\n","      <th>FormaDePagamento</th>\n","      <th>ContaMensal</th>\n","      <th>Churn</th>\n","    </tr>\n","  </thead>\n","  <tbody>\n","    <tr>\n","      <th>0</th>\n","      <td>0</td>\n","      <td>Sim</td>\n","      <td>Nao</td>\n","      <td>1</td>\n","      <td>Nao</td>\n","      <td>SemServicoTelefonico</td>\n","      <td>DSL</td>\n","      <td>Nao</td>\n","      <td>Sim</td>\n","      <td>Nao</td>\n","      <td>Nao</td>\n","      <td>Nao</td>\n","      <td>Nao</td>\n","      <td>Mensalmente</td>\n","      <td>Sim</td>\n","      <td>ChequeDigital</td>\n","      <td>29.85</td>\n","      <td>Nao</td>\n","    </tr>\n","    <tr>\n","      <th>1</th>\n","      <td>0</td>\n","      <td>Nao</td>\n","      <td>Nao</td>\n","      <td>34</td>\n","      <td>Sim</td>\n","      <td>Nao</td>\n","      <td>DSL</td>\n","      <td>Sim</td>\n","      <td>Nao</td>\n","      <td>Sim</td>\n","      <td>Nao</td>\n","      <td>Nao</td>\n","      <td>Nao</td>\n","      <td>UmAno</td>\n","      <td>Nao</td>\n","      <td>ChequePapel</td>\n","      <td>56.95</td>\n","      <td>Nao</td>\n","    </tr>\n","    <tr>\n","      <th>2</th>\n","      <td>0</td>\n","      <td>Nao</td>\n","      <td>Nao</td>\n","      <td>2</td>\n","      <td>Sim</td>\n","      <td>Nao</td>\n","      <td>DSL</td>\n","      <td>Sim</td>\n","      <td>Sim</td>\n","      <td>Nao</td>\n","      <td>Nao</td>\n","      <td>Nao</td>\n","      <td>Nao</td>\n","      <td>Mensalmente</td>\n","      <td>Sim</td>\n","      <td>ChequePapel</td>\n","      <td>53.85</td>\n","      <td>Sim</td>\n","    </tr>\n","    <tr>\n","      <th>3</th>\n","      <td>0</td>\n","      <td>Nao</td>\n","      <td>Nao</td>\n","      <td>45</td>\n","      <td>Nao</td>\n","      <td>SemServicoTelefonico</td>\n","      <td>DSL</td>\n","      <td>Sim</td>\n","      <td>Nao</td>\n","      <td>Sim</td>\n","      <td>Sim</td>\n","      <td>Nao</td>\n","      <td>Nao</td>\n","      <td>UmAno</td>\n","      <td>Nao</td>\n","      <td>DebitoEmConta</td>\n","      <td>42.30</td>\n","      <td>Nao</td>\n","    </tr>\n","    <tr>\n","      <th>4</th>\n","      <td>0</td>\n","      <td>Nao</td>\n","      <td>Nao</td>\n","      <td>2</td>\n","      <td>Sim</td>\n","      <td>Nao</td>\n","      <td>FibraOptica</td>\n","      <td>Nao</td>\n","      <td>Nao</td>\n","      <td>Nao</td>\n","      <td>Nao</td>\n","      <td>Nao</td>\n","      <td>Nao</td>\n","      <td>Mensalmente</td>\n","      <td>Sim</td>\n","      <td>ChequeDigital</td>\n","      <td>70.70</td>\n","      <td>Sim</td>\n","    </tr>\n","  </tbody>\n","</table>\n","</div>\n","      <button class=\"colab-df-convert\" onclick=\"convertToInteractive('df-d3a10733-9f3b-4484-a6dd-b95154bc1918')\"\n","              title=\"Convert this dataframe to an interactive table.\"\n","              style=\"display:none;\">\n","        \n","  <svg xmlns=\"http://www.w3.org/2000/svg\" height=\"24px\"viewBox=\"0 0 24 24\"\n","       width=\"24px\">\n","    <path d=\"M0 0h24v24H0V0z\" fill=\"none\"/>\n","    <path d=\"M18.56 5.44l.94 2.06.94-2.06 2.06-.94-2.06-.94-.94-2.06-.94 2.06-2.06.94zm-11 1L8.5 8.5l.94-2.06 2.06-.94-2.06-.94L8.5 2.5l-.94 2.06-2.06.94zm10 10l.94 2.06.94-2.06 2.06-.94-2.06-.94-.94-2.06-.94 2.06-2.06.94z\"/><path d=\"M17.41 7.96l-1.37-1.37c-.4-.4-.92-.59-1.43-.59-.52 0-1.04.2-1.43.59L10.3 9.45l-7.72 7.72c-.78.78-.78 2.05 0 2.83L4 21.41c.39.39.9.59 1.41.59.51 0 1.02-.2 1.41-.59l7.78-7.78 2.81-2.81c.8-.78.8-2.07 0-2.86zM5.41 20L4 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Visit the ' +\n","            '<a target=\"_blank\" href=https://colab.research.google.com/notebooks/data_table.ipynb>data table notebook</a>'\n","            + ' to learn more about interactive tables.';\n","          element.innerHTML = '';\n","          dataTable['output_type'] = 'display_data';\n","          await google.colab.output.renderOutput(dataTable, element);\n","          const docLink = document.createElement('div');\n","          docLink.innerHTML = docLinkHtml;\n","          element.appendChild(docLink);\n","        }\n","      </script>\n","    </div>\n","  </div>\n","  "]},"metadata":{},"execution_count":5}],"source":["dados.head()"]},{"cell_type":"markdown","metadata":{"id":"V8lNCeRnyQ2P"},"source":["## 1.3 - Diferentes Variáveis"]},{"cell_type":"code","execution_count":null,"metadata":{"colab":{"base_uri":"https://localhost:8080/","height":206},"id":"uQLvJoZ0yQ2Q","executionInfo":{"status":"ok","timestamp":1652934137466,"user_tz":180,"elapsed":6,"user":{"displayName":"Ana Clara Mioto","userId":"02280775085590012326"}},"outputId":"eff5207e-82b5-49a1-b6b5-201300929646"},"outputs":[{"output_type":"execute_result","data":{"text/plain":["   Conjuge  Dependentes  TelefoneFixo  PagamentoOnline  Churn\n","0        1            0             0                1      0\n","1        0            0             1                0      0\n","2        0            0             1                1      1\n","3        0            0             0                0      0\n","4        0            0             1                1      1"],"text/html":["\n","  <div id=\"df-090bdde4-39a2-4a91-b942-69bedc4248b1\">\n","    <div class=\"colab-df-container\">\n","      <div>\n","<style scoped>\n","    .dataframe tbody tr 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</tr>\n","    <tr>\n","      <th>3</th>\n","      <td>0</td>\n","      <td>0</td>\n","      <td>0</td>\n","      <td>0</td>\n","      <td>0</td>\n","    </tr>\n","    <tr>\n","      <th>4</th>\n","      <td>0</td>\n","      <td>0</td>\n","      <td>1</td>\n","      <td>1</td>\n","      <td>1</td>\n","    </tr>\n","  </tbody>\n","</table>\n","</div>\n","      <button class=\"colab-df-convert\" onclick=\"convertToInteractive('df-090bdde4-39a2-4a91-b942-69bedc4248b1')\"\n","              title=\"Convert this dataframe to an interactive table.\"\n","              style=\"display:none;\">\n","        \n","  <svg xmlns=\"http://www.w3.org/2000/svg\" height=\"24px\"viewBox=\"0 0 24 24\"\n","       width=\"24px\">\n","    <path d=\"M0 0h24v24H0V0z\" fill=\"none\"/>\n","    <path d=\"M18.56 5.44l.94 2.06.94-2.06 2.06-.94-2.06-.94-.94-2.06-.94 2.06-2.06.94zm-11 1L8.5 8.5l.94-2.06 2.06-.94-2.06-.94L8.5 2.5l-.94 2.06-2.06.94zm10 10l.94 2.06.94-2.06 2.06-.94-2.06-.94-.94-2.06-.94 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Visit the ' +\n","            '<a target=\"_blank\" href=https://colab.research.google.com/notebooks/data_table.ipynb>data table notebook</a>'\n","            + ' to learn more about interactive tables.';\n","          element.innerHTML = '';\n","          dataTable['output_type'] = 'display_data';\n","          await google.colab.output.renderOutput(dataTable, element);\n","          const docLink = document.createElement('div');\n","          docLink.innerHTML = docLinkHtml;\n","          element.appendChild(docLink);\n","        }\n","      </script>\n","    </div>\n","  </div>\n","  "]},"metadata":{},"execution_count":6}],"source":["#modificação de forma manual \n","traducao_dic = {'Sim': 1, \n","                'Nao': 0}\n","\n","dadosmodificados = dados[['Conjuge', 'Dependentes', 'TelefoneFixo', 'PagamentoOnline', 'Churn']].replace(traducao_dic)\n","dadosmodificados.head()"]},{"cell_type":"code","execution_count":null,"metadata":{"id":"0Dc3-8wayQ2R"},"outputs":[],"source":["#transformação pelo get_dummies\n","dummie_dados = pd.get_dummies(dados.drop(['Conjuge', 'Dependentes', 'TelefoneFixo', 'PagamentoOnline', 'Churn'],\n","                axis=1))\n","\n","#junção dos dados trasformados com os que já tinhamos\n","dados_final = pd.concat([dadosmodificados, dummie_dados], axis=1)"]},{"cell_type":"code","source":["dados_final.head()"],"metadata":{"colab":{"base_uri":"https://localhost:8080/","height":300},"id":"UmQrjUnh08vu","executionInfo":{"status":"ok","timestamp":1652934137860,"user_tz":180,"elapsed":399,"user":{"displayName":"Ana Clara Mioto","userId":"02280775085590012326"}},"outputId":"220aa24f-016c-4f9d-ce34-2928766087d2"},"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["   Conjuge  Dependentes  TelefoneFixo  PagamentoOnline  Churn  Maior65Anos  \\\n","0        1            0             0                1      0            0   \n","1        0            0             1                0      0            0   \n","2        0            0             1                1      1            0   \n","3        0            0             0                0      0            0   \n","4        0            0             1                1      1            0   \n","\n","   MesesDeContrato  ContaMensal  VariasLinhasTelefonicas_Nao  \\\n","0                1        29.85                            0   \n","1               34        56.95                            1   \n","2                2        53.85                            1   \n","3               45        42.30                            0   \n","4                2        70.70                            1   \n","\n","   VariasLinhasTelefonicas_SemServicoTelefonico  ...  StreamingDeFilmes_Nao  \\\n","0                                             1  ...                      1   \n","1                                             0  ...                      1   \n","2                                             0  ...                      1   \n","3                                             1  ...                      1   \n","4                                             0  ...                      1   \n","\n","   StreamingDeFilmes_SemServicoDeInternet  StreamingDeFilmes_Sim  \\\n","0                                       0                      0   \n","1                                       0                      0   \n","2                                       0                      0   \n","3                                       0                      0   \n","4                                       0                      0   \n","\n","   TipoDeContrato_DoisAnos  TipoDeContrato_Mensalmente  TipoDeContrato_UmAno  \\\n","0                        0                           1                     0   \n","1                        0                           0                     1   \n","2                        0                           1                     0   \n","3                        0                           0                     1   \n","4                        0                           1                     0   \n","\n","   FormaDePagamento_CartaoDeCredito  FormaDePagamento_ChequeDigital  \\\n","0                                 0                               1   \n","1                                 0                               0   \n","2                                 0                               0   \n","3                                 0                               0   \n","4                                 0                               1   \n","\n","   FormaDePagamento_ChequePapel  FormaDePagamento_DebitoEmConta  \n","0                             0                               0  \n","1       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?"],"metadata":{"id":"1Btl3Wct4CoN"},"execution_count":null,"outputs":[]},{"cell_type":"markdown","source":["Novos pares de informações = ($Xmaria$, $ymaria$)"],"metadata":{"id":"n4nyxwPFTncE"}},{"cell_type":"markdown","source":["## Balanceamento dos dados"],"metadata":{"id":"zCcuXt0FZfNe"}},{"cell_type":"code","source":["#variável target está desbalanceada\n","import seaborn as sns\n","%matplotlib inline\n","ax = sns.countplot(x='Churn', data=dados_final)"],"metadata":{"id":"PZ98-642QERQ","executionInfo":{"status":"ok","timestamp":1652934138347,"user_tz":180,"elapsed":490,"user":{"displayName":"Ana Clara Mioto","userId":"02280775085590012326"}},"outputId":"effcd349-a5cd-4d6b-a40f-48819638ce70","colab":{"base_uri":"https://localhost:8080/"}},"execution_count":null,"outputs":[{"output_type":"display_data","data":{"text/plain":["<Figure size 432x288 with 1 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Clara Mioto","userId":"02280775085590012326"}},"outputId":"05e18b50-1db7-4ba9-b26f-0991fa0ff739"},"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["0    5174\n","1    1869\n","Name: Churn, dtype: int64"]},"metadata":{},"execution_count":14}]},{"cell_type":"code","source":["#biblioteca para balancear os dados utilizando over_sampling\n","from imblearn.over_sampling import SMOTE"],"metadata":{"id":"TcFY4SXuZyIO"},"execution_count":null,"outputs":[]},{"cell_type":"code","source":["#dividindo os dados em caracteristicas e target\n","X = dados_final.drop('Churn', axis = 1)\n","y = dados_final['Churn']"],"metadata":{"id":"0-I2aDVhQUdu"},"execution_count":null,"outputs":[]},{"cell_type":"code","source":["smt = SMOTE(random_state=123)\n","X, y = smt.fit_resample(X, y)"],"metadata":{"id":"5lIY03boZyBN"},"execution_count":null,"outputs":[]},{"cell_type":"code","source":["#junção dos dados balanceados\n","dados_final = pd.concat([X, y], axis=1)"],"metadata":{"id":"bnlqzLVUZl0u"},"execution_count":null,"outputs":[]},{"cell_type":"code","source":["#verificação 1 - junção dos dados\n","dados_final.head(2)"],"metadata":{"colab":{"base_uri":"https://localhost:8080/"},"id":"GQj3bEEOZ42e","executionInfo":{"status":"ok","timestamp":1652934139284,"user_tz":180,"elapsed":10,"user":{"displayName":"Ana Clara Mioto","userId":"02280775085590012326"}},"outputId":"a0caee8f-cfa7-4c10-9260-a3e3dcd92857"},"execution_count":null,"outputs":[{"output_type":"execute_result","data":{"text/plain":["   Conjuge  Dependentes  TelefoneFixo  PagamentoOnline  Maior65Anos  \\\n","0        1            0             0                1            0   \n","1        0            0             1                0            0   \n","\n","   MesesDeContrato  ContaMensal  VariasLinhasTelefonicas_Nao  \\\n","0                1        29.85                            0   \n","1               34        56.95                            1   \n","\n","   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\n"},"metadata":{"needs_background":"light"}}]},{"cell_type":"code","source":["dados_final.Churn.value_counts()"],"metadata":{"id":"Zx0HYHd3RGl7","executionInfo":{"status":"ok","timestamp":1652934139732,"user_tz":180,"elapsed":15,"user":{"displayName":"Ana 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