Epic Epoch is a simple script for tracking dramatic changes in the composition of a field over time. It acts in three steps:
- First, the N most frequently occurring entities are selected at each time period,
- A frequency timeline is built for each of the selected terms
- A bump graph shows the evolution of frequency and ranking through time
The variable you are interested in tracking in your database
Size of the Hierarchy:
The number of top entities to consider at each time period
Normalization of frequency count:
Activating this feature will forgo raw frequency count and count in percentages
Note: Clicking on any of the white rectangle dividers within a word’s journey will highlight it’s entire dynamics.
Number of time slices:
Number of time periods in which you want to divide the visualization
Time slices distribution:
Regular will cut into uniform periods of time. On the other hand, homogeneous will divide time frames so they contain the same number of documents
This will allow the time slice distribution to overlap different time periods (particularly useful if you are using homogeneous distribution).