Ursula Peres Verthein, Ligia Amparo-Santos
[The notion of food culture in the actions of food and nutrition education in Brazilian schools: a critical analysis]
Ciencia & saude coletiva
previous methods analyzing substance political attention make several restrictive assumptions prohibitively costly applied largescale political texts describe topic model legislative speech statistical learning model uses word choices infer topical categories covered set speeches identify topic specific speeches method estimates rather assumes substance topics keywords identify topics hierarchical nesting topics use topic model examine agenda us senate 1997 2004 using new database 118000 speeches 70000000 words congressional record model reveals speech topic categories distinctive meaningfully interrelated richer view democratic agenda dynamics previously possible