Which broad area of data mining applications analyzes data, forming rules to distinguish between defined classes?

_____ is a variation of chip design, where signals are sent via light rather than electricity.

A. Laser integration B. Chrome chip design C. Carbon nanotube technology D. Optical computing E. Photon insertion technique

Financial ratios are only useful when they are compared to other ratios. All of the following are useful means of examining relative performance except

a. Aggregate economy b. Industries c. Competitors d. Historical performance e. All of the above are relevant comparison measures for financial ratios