L’indicateur synthétique mensuel d’activité (ISMA) : une révision.

L’ISMA est un des principaux outils de diagnostic conjoncturel de la Banque de France. Publié chaque mois, il estime la croissance du PIB français pour le prochain trimestre, en se basant sur les données d’enquêtes de la Banque de France.Analyse conjoncturelle, prévision du PIB, étalonnages, données d’enquête.

Pourquoi calculer un indicateur du climat des affaires dans les services ?

L’enquête mensuelle de conjoncture de la Banque de France présente chaque mois un indicateur du climat des affaires dans l’industrie. Un indicateur similaire a été construit pour les services, en appliquant une méthode analogue, à savoir l’extraction d’un facteur d’évolution qui est commun à l’ensemble des questions de l’enquête mensuelle dans les services.Analyse conjoncturelle, données d’enquête, services, interpolation, composantes principales.

Monthly forecasting of French GDP: A revised version of the OPTIM model.

This paper presents a revised version of the model OPTIM, proposed by Irac and Sédillot (2002), used at the Banque de France in order to predict French GDP quarterly growth rate, for the current and next quarters. The model is designed to be used on a monthly basis by integrating monthly economic information through bridge models, for both supply and demand sides of GDP. For each GDP component, bridge equations are specified by using a general-to-specific approach implemented in an automated way by Hoover and Perez (1999) and improved by Krolzig and Hendry (2001). This approach allows to select explanatory variables among a large data set of hard and soft data. The final choice of equations relies on a recursive forecast study, which also helps to assess the forecasting performance of the revised OPTIM model in the prediction of aggregated GDP. This study is based on pseudo real-time forecasts taking publication lags into account. It turns out that the model outperforms benchmark models.GDP forecasting ; Bridge models ; General-to-specific approach

MASCOTTE: Model for AnalySing and foreCasting shOrT TErm developments

MASCOTTE is the new version of the Banque de France's macro-econometric forecasting model. Following the last rebasing of National Accounts (currently at 1995 price), the previous version of the model was simplified, re-specified and re-estimated. The model is essentially used for making macro-economic projections of the French economy over a two-to-three year horizon, which requires an accounting framework as close as possible to the French National Accounts. The main agents are companies, households, general government and the rest of the world. The new version now includes a supply block derived from the explicit optimisation behaviour of companies using a Cobb-Douglas technology under imperfect competition, and a new Wage Setting schedule. Full homogeneity of the nominal side of the model ensures the independence between the nominal equilibrium and the real equilibrium, the latter being only determined in the long run by relative prices. Furthermore, as regards the specification of equations, special attention was paid to the consequences of changes in short-term interest rates.Macro-economic model ; Applied econometrics ; Forecasting ; France

OPTIM : un outil de prévision trimestrielle du PIB de la France.

Le modèle OPTIM permet de prévoir, chaque mois, les taux de croissance du PIB de la France et de ses principales composantes, pour le trimestre en cours et le trimestre suivant. Ce modèle mobilise un large éventail de données macro-économiques mensuelles et de données d’enquête, sélectionnées par une procédure statistique automatique.Prévision, taux de croissance du PIB, modèle d’étalonnage, approche “general-to-specific”.

Why calculate a business sentiment indicator for services?.

Every month, the Banque de France’s Monthly Business Survey provides a business sentiment indicator for industry. A similar indicator has been constructed for services using a comparable method that consists in extracting a factor of change that is common to all the questions in the monthly survey on services.business conditions analysis, survey data, services, interpolation, principal components.

OPTIM: a quarterly forecasting tool for French GDP.

The OPTIM model helps to forecast each month the growth rate of French GDP and its main components for the coincident quarter and the quarter ahead. The model uses a wide range of monthly macroeconomic data and survey data, selected by an automatic statistical procedure.GDP forecasting, bridge model, general-to-specifi c approach (Gets).