This paper examines whether data from business tendency surveys are useful for forecasting the macro economy (GDP, unemployment, price and wage inflation, interest rates, exchange-rate changes etc.) in the short run. The starting point is a so-called dynamic factor model (DFM), which is used...

Since September 2004, Insee has published the results of its business survey in the services sector on a monthly basis together with a synthetic indicator. This indicator is extracted from both monthly and quarterly balances of opinion derived from the survey. The methodological framework is...

Clustering techniques typically group similar instances underlying individual attributes by supposing that similar instances have similar attributes characteristic. On contrary, clustering similar instances given a specific behavior is framed through supervised learning. For instance, which...

With the development of cognitive information technology and continuous application, human society has also accelerated the development. Cognitive information is widely used in the field of oil and gas, where production forecasts are of great importance to firms and companies. In this article,...