Takes an event data set containing of dates and CUSIPs which have to correspond
to a press data frame compiled by the function newswire_segmenter_folder.
An R data frame which contains the column of the event_data plus three columns for the baseline announcements
(positive, neutral, and negative) and three columns for the impression offsetting announcements (positive, neutral, and negative).
Arguments
event_data
An R data that contains three columns which have to be labeled "date_announced", "cusip", and "ID".
The date_announced column contains the dates of the events for which impression offsetting is calculated.
The cusip column contains the 8-digit cusip of the companies for which impression offsetting is calculated.
The ID column should contain a unique ID that identifies the specific event.
press_data_categorized
An R data frame with each row representing one 'newswire' article. The columns indicate the title, text,
'newswire', date, and weekday. It should be the outcome of newswire_segmenter in which both
the argument sentiment and text_clustering have been set to TRUE.