Recommender systems have been widely used by online stores to suggest items of interest to users. These systems often identify a subset of items from a much larger set that best matches the user's interest. A key concern with existing approaches is over-specialization, which results in returning...

Understanding the relationship between itineraries displayed on an air travel website’s shopping screens and the website’s market share has never been so important nowadays. This paper presents an approach to measure ‘screen quality’, that is, the overall desirability of itineraries...