Information Systems

The most popular indices currently in use today, such as those developed by the National Association of Realtors, measure the median home prices nationally and in a given region. But is median price the best way to measure the trend in home prices? W. P. Carey real estate professor Karl Guntermann and research associate Alex Horenstein have developed a new index for Arizona — this one based on repeat sales.

Passwords are "the dirty little secret" of the computer-security industry, says Arvind Krishna, a software security expert. The use — and misuse – of passwords illuminates a cyber-security conundrum: is it about the user, or the data? Industry experts like Krishna study the plethora of security screw-ups for clues. Krishna favors centralizing identity management — he mentions passports as a real-world example — but much work and deep thinking must be done before such a concept can become workable in the cyber-security world.

Keyword searches can be a waste of valuable time, affecting productivity in a company with an extensive database. New research from an information systems professor at W. P. Carey School of Business has come up with a better idea for document storage and retrieval: dynamic visual hierarchies that tap the human searcher's ability to recognize information, rather than recall it.

An information systems researcher at the W. P. Carey School of Business is testing a new search engine that understands natural language questions — a system which, beyond its practical utility for the average Web searcher, has critical implications for homeland security agencies and artificial intelligence research.