def __init__(self, dirName):
        """
        Args:
            dirName (string): directory where to load the corpus
        """
        self.lines = {}
        self.conversations = []

        MOVIE_LINES_FIELDS = ["lineID","characterID","movieID","character","text"]
        MOVIE_CONVERSATIONS_FIELDS = ["character1ID","character2ID","movieID","utteranceIDs"]

        dirName = "/usr/share/dragonfire/deepconv/"
        self.lines = self.loadLines(os.path.join(dirName, "movie_lines.txt"), MOVIE_LINES_FIELDS)
        self.conversations = self.loadConversations(os.path.join(dirName, "movie_conversations.txt"), MOVIE_CONVERSATIONS_FIELDS)

        # TODO: Cleaner program (merge copy-paste) !!