ARIMA model
Definition
An autoregressive integrated moving average statistical model widely used in the analysis and forecasting of complex time series. This mathematical tool structurally combines autoregressive processes and moving average components, applying a differencing step to transform non-stationary data into stationary data, facilitating the prediction of economic, meteorological, or financial trends.
Bilingual Equivalents
- ARIMA model
- Time series model
Grammatical & Source Details
| Inflection Type | Technical masculine acronym, structurally fixed within scientific registers. |
| Formation | Acronym formed from Autoregressive Integrated Moving Average, stabilized globally across analytical fields. |
| Spelling / Pronunciation | [ə.ˈriː.mə] |
| Source | International Encyclopedia of Statistical Science and Econometric Metrics |
Contextual Usage Examples
RO: Analistul financiar a configurat un model ARIMA pentru a anticipa evoluția indicelui bursier în următoarele luni.
EN: The financial analyst configured an ARIMA model to anticipate the stock index evolution in the following months.
RO: O calibrare corectă a parametrilor unui model ARIMA necesită o serie temporală lungă și fără date lipsă.
EN: A proper calibration of an ARIMA model's parameters requires a long time series without missing data.
RO: Cercetătorul a comparat acuratețea algoritmului ARIMA cu cea a rețelelor neuronale moderne pentru prognoza meteo.
EN: The researcher compared the accuracy of the ARIMA algorithm with that of modern neural networks for weather forecasting.
Idioms & Phrases
Model ARIMA sezonier / Seasonal ARIMA (SARIMA)
RO: Extensie a modelului standard concepută structural pentru a capta și analiza fluctuațiile periodice repetitive din date.
EN: An extension of the standard model structurally designed to capture and analyze repetitive periodic fluctuations in data.
Ordin de diferențiere ARIMA / ARIMA differencing order
RO: Parametru matematic care indică de câte ori trebuie scăzute valorile succesive pentru a elimina trendul.
EN: A mathematical parameter indicating how many times successive values must be subtracted to eliminate the trend.
Prognoză prin model ARIMA / ARIMA forecasting
RO: Proces computațional de extrapolare a datelor viitoare pe baza corelațiilor istorice identificate de model.
EN: A computational process of extrapolating future data based on historical correlations identified by the model.
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