code: def __init__(self):
      self.string_cols1 = [
          "text_tokens",
          "hashtags",  # Tweet Features
          "tweet_id",  #
          "present_media",  #
          "present_links",  #
          "present_domains",  #
          "tweet_type",  #
          "language",  #
      ]
      self.int_cols1 = [
          "tweet_timestamp",
      ]
      self.string_cols2 = [
          "engaged_with_user_id",
      ]
      self.int_cols2 = [
          "engaged_with_user_follower_count",  # Engaged With User Features
          "engaged_with_user_following_count",  #
      ]
      self.bool_cols1 = [
          "engaged_with_user_is_verified",  #
      ]
      self.int_cols3 = [
          "engaged_with_user_account_creation",
      ]
      self.string_cols3 = [
          "enaging_user_id",
      ]
      self.int_cols4 = [
          "enaging_user_follower_count",  # Engaging User Features
          "enaging_user_following_count",  #
      ]
      self.bool_cols2 = [
          "enaging_user_is_verified",
      ]
      self.int_cols5 = [
          "enaging_user_account_creation",
      ]
      self.bool_cols3 = [
          "engagee_follows_engager",  # Engagement Features
      ]
      self.float_cols = [
          "reply_timestamp",  # Target Reply
          "retweet_timestamp",  # Target Retweet
          "retweet_with_comment_timestamp",  # Target Retweet with comment
          "like_timestamp",  # Target Like
      ]
  
      # After some conversion
      self.int_cols6 = [
          "tweet_timestamp",
          "engaged_with_user_follower_count",  # Engaged With User Features
          "engaged_with_user_following_count",  #
          "engaged_with_user_account_creation",
          "enaging_user_follower_count",  # Engaging User Features
          "enaging_user_following_count",  #
          "enaging_user_account_creation",
      ]
  
file_path: BigDL/python/friesian/example/wnd/recsys2021/valid_to_parquet.py
imports: import os
  from time import time
  from argparse import ArgumentParser
  from bigdl.orca import init_orca_context, stop_orca_context
  from bigdl.friesian.feature import FeatureTable
  from bigdl.dllib.utils.log4Error import *
label_desc: Use image node_id 1 to create a new RecsysSchema object  with example: obj = RecsysSchema()