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An Overview of the Different Variables Used in the PCA Analysis in 2008 and 2010
| The digital field of production | ||
|---|---|---|
| 2008 | 2010 | |
| Economic capital | The number of users/viewers/readers | The number of users/viewers/readers |
| + the original media platform (newspaper, television news bulletins) | ||
| Journalistic capital | The number of journalists | The number of journalists |
| The amount of exclusive news stories/own production | The amount of exclusive news stories/own production | |
| External quotes (shovel-ware) | External quotes (shovel-ware) | |
| Internal quotes | Internal quotes | |
| Amount of stories from news agencies | Amount of stories from news agencies | |
| Subject areas | Subject areas | |
| + The original media platform (newspaper, television news bulletins) | ||
The Three Principal Component Analysis of the Field of News
| Component 1 | Component 2 | Component 3 | Component 4 | |
|---|---|---|---|---|
| 2008 Online media | ||||
| Eigenvalue | 2.88 | 1.74 | 0.93 | 0.43 |
| Explained variance (%) | 48.0 | 29.1 | 15.5 | 7.2 |
| Coordinates of active variables | ||||
| Original production | −0.524 | 0.769 | −0.321 | −0.172 |
| Internal shovel-ware | −0.576 | −0.645 | 0.498 | 0.051 |
| External shovel-ware | 0.878 | 0.334 | 0.310 | −0.125 |
| News agency articles | 0.575 | −0.467 | −0.606 | 0.290 |
| Users 2008 | 0.770 | 0.452 | 0.327 | 0.301 |
| Journalists 2008 | −0.760 | 0.449 | 0.076 | 0.460 |
| 2010 Online media | ||||
| Eigenvalue | 2.98 | 2.27 | 0.72 | 0.03 |
| Explained variance (%) | 49.7 | 37.8 | 12.0 | 0.4 |
| Coordinates of active variables | ||||
| Original production | 0.869 | 0.414 | 0.262 | −0.067 |
| Internal shovel-ware | −0.025 | 0.985 | 0.131 | 0.110 |
| External shovel-ware | 0.514 | −0.777 | −0.357 | 0.066 |
| News agency articles | −0.997 | −0.024 | 0.054 | −0.046 |
| Users 2010 | 0.447 | −0.624 | 0.640 | 0.028 |
| Journalists 2010 | 0.876 | 0.365 | −0.312 | −0.036 |
| 2010 with parent media | ||||
| Eigenvalue | 3.85 | 1.26 | 0.57 | 0.34 |
| Explained variance (%) | 61.6 | 21.2 | 9.6 | 5.6 |
| Coordinates of active variables | ||||
| Original production | −0.967 | −0.003 | 0.017 | 0.245 |
| Internal shovel-ware | 0.532 | −0.606 | 0.591 | 0.016 |
| External shovel-ware | 0.414 | 0.834 | 0.289 | −0.220 |
| News agency articles | 0.851 | −0.326 | −0.355 | −0.188 |
| Users 2010 | 0.834 | 0.318 | 0.000 | 0.423 |
| Journalists 2010 | −0.941 | 0.015 | 0.122 | −0.134 |