yanachen questions

• How to group by one column in rdd in pyspark?
• Why the auc is so different from logistic regression of sklearn and R
• How to save TextVectorization to disk in tensorflow?
• What is the input of tf.losses.log_loss(labels, predictions) in tensorflow?
• How to conditionally scale values in Keras Lambda layer?
• Does the np.nan in numpy array occupy memory?
• What is the mechanism of using param 'scale_pos_weight' in xgboost?
• how to convert logits to probability in binary classification in tensorflow?
• Why the types are all string while load csv to pyspark dataframe?
• How to change date format in hive?

yanachen answers