ARTICLE SYNOPSIS ...Using Fuzzy Logic in Expert Systems by James F. Derry Stock market followers assess the market environment with numerous technical indicators. For the most part, these indicators are rarely definitively bullish or bearish. It is rare that an indicator can be considered to have ""crisp"" values, such as true or false. More accurately, a technical indicator is considered --as the term might imply--to be an indication of a situation, not a black-or-white statement of some fact. Artificial intelligence researchers deal with this lack of a clear-cut conclusion with the concept of fuzzy logic. Fuzzy ...