|  APR 1993

Treasury Bond Yields: A Neural Net Analysis Approach by John Kean

Treasury Bond Yields: A Neural Net Analysis Approach by John Kean In this article, STOCKS & COMMODITIES contributor John Kean uses a neural network to look for predictable patterns between Treasury bond yields and two of the driving forces behind the bond market, inflation and government deficits. Treasury bond yields are one of the most closely watched financial statistics. Aside from bond traders, those in the stock, commodities and foreign exchange markets know that moves in the Treasury bonds often set off intermarket waves that spread out like a stone thrown into a pond. Besides the financial markets, the health of the economy as a whole is heavily affected by the level of long-term interest rates, all of which closely track Treasury bond yields. Most people think of mortgage rates when they think about long-term rates and the economy. But this is a prosaic consideration and pales certainly when compared with the long-term competitive repercussions of hindering industrial investment with high borrowing rates relative to other nations. In this article, I will examine using a form of artificial intelligence, called neural net analysis, in Treasury bond yield prediction. I will look at forecasting bonds from two standpoints: first, predicting month-end Treasury bond yields for trading purposes, one month ahead, and second, predicting changes in Treasury bond real yields (meaning yield minus inflation), 10 months ahead. NEURAL NETS The concept behind neural networks was originally brought forth almost 50 years ago and had its origin in studies of the mechanisms by which the brain learns. Over the years, the neural network concept went through periods of favor and disfavor with researchers, based on both perceptions of its promise and available hardware power. There has been a resurgence of interest in this field over the last decade, and neural nets are now being applied in many fields including medicine, banking, general business, engineering and science. This approach gives results that are superior to conventional methods of statistical analysis and pattern recognition. The type of neural network discussed here is a software imitation of the brain's learning process. The basic learning unit of the brain is the neuron, of which there are many varieties. When neurons are activated, they interact with each other by releasing electrochemical packets across the synaptic gaps between them, altering the internal activity level of the neurons. The learning process comes about through the modification of these connections between neurons.

by John Kean