Week 2 of our media bias/slant ratings, based on our new-and-improved version 1.2 classifier, shows some consistencies and variances from our 1/16 – 20 report of last week.
NOTE: Net content favoring the Republican Party in Chart 2 is portrayed in red; net content favoring the Democratic Party is shown in blue.
CBS and NBC’s party slant ratings, in comparison to last week’s, actually flipped in both cases. This is not altogether surprising, given that content under analysis for those 2 networks is relatively light, and that the nightly news shows we evaluate for both are “straight” news programs. In contrast, the party alignments of Fox, CNN, ABC, and MSNBC remained consistent, week-to-week.
As noted last Monday, our transcript coverage varies by network, program, and date. Correspondingly, our rating confidence is directly proportional to the amount of transcript text available for classification.The exact amount of coverage per network is shown in the table to the right, but we have graphically indicated depth-of-coverage in Chart 1 by way of color shading. For example, the bars representing the slant ratings for both NBC and CBS were purposely made lighter to reflect the relatively small transcript coverage for those particular networks.
Mediate Metrics’ slant measurement system is currently focused on weekday transcripts from the national nightly news programs on the 3 major broadcast networks (ABC, CBS, and NBC), along with programming aired from 5 PM until 11 PM eastern time on top 3 cable news channels (CNN, Fox, and MSNBC). Compared to last week, coverage under analysis is significantly improved for ABC and NBC, but has decreased for CBS.
For those new to our site, the numerical slant ratings supporting the Chart 1 emanate from a custom text analysis “classifier,” built to extract statements of political slant from TV news transcripts. (For more on the underlying technology, see our post on Text Analytics Basics at: http://wp.me/p1MQsU-at.) We have trained our classifier to interpret political slant quite conservatively, conforming to strict guidelines for the sake of consistency and objectivity. As such, the ratings we present may be perceived as under-reporting the absolute slant of the actual content under review, but the appropriate way to view our ratings is as relative to similar programming.
To properly evaluate editorial content, we have concluded that the Republican presidential primaries and candidates are subject to intense scrutiny. Related news content tends to be disproportionately negative, and often times does not contain a clear inter-party comparison — an element we consider a crucial condition for the proper evaluation of political slant. As such, we have excluded statements about the Republican Presidential primaries and candidates from our slant ratings at this juncture, unless parallel references to the Democratic party are mentioned in parallel.
We’ll publish slant ratings by program for the same January 23 – 27 time period tomorrow.