https://www.newyorker.com/magazine/2023/12/11/the-inside-story-of-microsofts-partnership-with-openai
Measuring media ideology: Bias or reality
December 20, 2023https://www.economist.com/united-states/2023/12/14/american-journalism-sounds-much-more-democratic-than-republican American journalism sounds much more Democratic than Republican
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The first step in our analysis was compiling a partisan “dictionary”. We took all speeches in Congress in 2009-22 and broke them up into two-word phrases. We then filtered this list to terms used by large shares of one party’s lawmakers, but rarely by the other’s. The result was a collection of 428 phrases that reliably distinguish Democratic and Republican speeches, such as “unborn baby” versus “reproductive care” or “illegal alien” versus “undocumented immigrant”….Next, we collected 242,000 articles from news websites in 2016-22, and transcripts of 397,000 prime-time tv segments from 2009-22. We calculated an ideological score for each one by comparing the frequencies of terms on our list. For example, a story in which 0.1% of distinct phrases are Republican and 0.05% are Democratic has a conservative slant of 0.05 percentage points, or five per 10,000 phrases.
…Finally, we calculated the average partisan leaning of each news source’s coverage, weighting each story by the share of its content about domestic politics.
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