id	keyword
american_scientific_journal-1458	volatility
american_scientific_journal-1458	model
american_scientific_journal-1458	journal
american_scientific_journal-1458	series
american_scientific_journal-1458	returns
american_scientific_journal-1458	stock
american_scientific_journal-1458	garch
american_scientific_journal-1458	garch(1,1
american_scientific_journal-1458	market