Transgressor and detector indices over time and network representations for selected countries.

<p>(A) Transgressor indices of China, Turkey and Iran from Jan 2004 to Jul 2008, derived from exponentially decaying edge weights. Plotted values are averaged over a 7-day window to improve readability. (B) The state of the food alert network on 1 July 2008, focusing on China (CHN). Edges with weight less than 1 are not shown. Arrows point from reporting countries to countries being reported on. Countries reporting on China or countries China reported on (currently none) are placed on the inner circle; countries not reporting directly on China but being connected to direct reporters on China are placed on the outer circle. Shades of red denote countries with high transgressor index; shades of green denote countries with high detector index. Edge thickness scales with the logarithm of the corresponding edge weight. (C) Detector indices of Germany, Italy and the United Kingdom from Jan 2004 to Jul 2008, derived from exponentially decaying edge weights. Plotted values are averaged as above. (D) The state of the food alert network on 1 July 2008, focusing on Germany (DEU). Arrowheads, edge thicknesses, vertex colors and layout as above.