| Types of Data Analyzed/Mined in the past 12 months: (95 voters) | |
| table data fixed num of columns (76) |  80.0% |
| time series (43) |  45.3% |
| text free-form (36) |  37.9% |
| itemsets / transactions (27) |  28.4% |
| anonymized data (18) |  18.9% |
| XML data (14) |  14.7% |
| web content (13) |  13.7% |
| social network data (12) |  12.6% |
| images / video (12) |  12.6% |
| spatial data 2D 3D (9) |  9.5% |
| other (9) |  9.5% |
| web clickstream (8) |  8.4% |
| email (8) |  8.4% |
| music / audio (7) |  7.4% |
Comparing with the last year's KDnuggets Poll: Data Types Analyzed / Mined (Sep 2008), we see that the top 5 categories are unchanged.
However, comparing the relative growth (% voters who analyzed this data type 2009 relative to 2008), we see increases for almost every data type.
The biggest increases are for
- music / audio , 696% up
- other, 412% up
- XML data 165% up
- images / video, 127.4% up
- social network data, 51.6% up
- email, 51.6% up
- web clickstream, 51.6% up