We’ve recently fixed a small bug in the scoring system, and you may notice that some scores are higher than they used to be. Scores are calculated as floating-point values, but displayed as integers in the web interface. To this point the decimal part of the score has been truncated, so that all scores were effectively rounded down to the next lowest integer. From now on we will use the more customary rounding rules, so that partial scores equal to and above .5 will be rounded up. If you compare the results of a search done now to those of the same search before the change, you can expect about half of the scores to be one higher.
As we continue our research on quantifying the literary significance of allusions, scores may change again, and perhaps significantly. We will post notice and explanations of any such changes here. If for any reason you need access to a previous version of the software in order to replicate older results, please just let us know and we can help you. Every version of Tesserae, once published on our web site, is archived and can be retrieved.