Table 3 Lyric descriptors identified by robust regression (Huber M regressor).
From: Author Correction: Song lyrics have become simpler and more repetitive over the last five decades
Genre | |||||
|---|---|---|---|---|---|
Pop | Rock | Rap | Country | R&B | |
1 | Unique rhyme words\(^{Rh}\) | Repeated line ratio\(^{L}\) | Ratio verses to sections\(^{S}\) | Punctuation ratio\(^{L}\) | Repeated line ratio\(^{L}\) |
2 | Repeated line ratio\(^{L}\) | Title occurrences\(^{S}\) | Unique rhyme words\(^{Rh}\) | Compression ratio\(^{D}\) | Difficult words\(^{Re}\) |
3 | Ratio chorus to sections\(^{S}\) | Number of verses\(^{S}\) | Ratio chorus to sections\(^{S}\) | Tris legomenon ratio\(^{L}\) | Blank line count\(^{L}\) |
4 | Dot count\(^{L}\) | Avg. token length\(^{L}\) | Repeated line ratio\(^{L}\) | Avg. token length\(^{L}\) | Unique rhyme words\(^{Rh}\) |
5 | Ratio verses to sections\(^{S}\) | Difficult words\(^{Re}\) | Dot count\(^{L}\) | Blank line count\(^{L}\) | Parenthesis count\(^{L}\) |
6 | Title occurrences\(^{S}\) | Dot count\(^{L}\) | Difficult words\(^{Re}\) | Summer’s S\(^{D}\) | Positive emotion\(^{E}\) |
7 | Avg. token length\(^{L}\) | Ratio chorus to sections\(^{S}\) | Exclamation mark count\(^{L}\) | Unique rhyme words\(^{Rh}\) | Rhyme percent\(^{Rh}\) |
8 | Parenthesis count\(^{L}\) | Unique rhyme words\(^{Rh}\) | Hyphen count\(^{L}\) | Positive emotion\(^{E}\) | Summer’s S\(^{D}\) |
9 | Pronoun frequency\(^{L}\) | Dis legomenon ratio\(^{L}\) | Summer’s S\(^{D}\) | Ratio verses to sections\(^{S}\) | Dot count\(^{L}\) |
10 | Exclamation mark count\(^{L}\) | Two verses at least one chorus\(^{S}\) | MTLD\(^{D}\) | Number of couplets\(^{Rh}\) | Anger\(^{E}\) |
