In many environments, including credit and online markets, past records about participants are collected, published, and erased after some time. We study the effects of erasing past records on trade and welfare in a dynamic market where each seller's quality follows a Markov process and buyers...

We study soft persistence (existence in subsequent temporal layers of motifs from the initial layer) of motif structures in Triangulated Maximally Filtered Graphs (TMFG) generated from time-varying Kendall correlation matrices computed from stock prices log-returns over rolling windows with...

Merely seventeen years old in the U.S. market, electronic commerce (e-commerce) sales continue to grow rapidly on an annual basis. At the macro level, U.S. e-commerce sales for 2010 totaled $166.5 billion. Although this total is impressive, it represents only 4.28 percent of the total of U.S....