The seller behavior and selling strategies in electronic marketplaces have not been well studied in literature. In this dissertation, we classify sellers into new sellers and experienced sellers according to their feedback scores. We find that new sellers have higher listing error rates, lower...

Medical cost has received increasing interest recently in Biostatistics and public health. Statistical analysis and inference of life time medical cost have been challenging by the fact that the survival times are censored on some study subjects and their subsequent cost are unknown. Huang...