M7 Matrix Add-In - Version 1.0 Forecasting Add-in function for Excel 97/2000. Uses a complex matrix to forecast. Learns firm user defined data and then makes an instant estimate. The matrix artificial intelligence is regarding as much more accurate and reliable than neural networks. The M7 Matrix was developed after 15 years of work. The accuracy is normally out to 9 decimal places. The M7Forecast function is called like any other Excel function, so it can be used in macro's.