পদ্ধতির তুলনা করুন
নির্বাচিত পদ্ধতিগুলো পাশাপাশি পর্যালোচনা করুন; যে সারিগুলোয় পার্থক্য আছে সেগুলো চিহ্নিত করা হয়।
| এনসেম্বল কালম্যান ফিল্টার× | Particle Filter (Sequential Monte Carlo)× | |
|---|---|---|
| ক্ষেত্র≠ | ডেটা সংযোজন | বেইসীয় |
| পরিবার≠ | Regression model | Bayesian methods |
| উদ্ভবের বছর≠ | 1994 | 1993 |
| প্রবর্তক≠ | Geir Evensen | Gordon, Salmond & Smith |
| ধরন≠ | Sequential Monte Carlo data assimilation filter | Sequential Monte Carlo estimator |
| মৌলিক উৎস≠ | Evensen, G. (1994). Sequential data assimilation with a nonlinear quasi-geostrophic model using Monte Carlo methods to forecast error statistics. Journal of Geophysical Research, 99(C5), 10143–10162. DOI ↗ | Gordon, N. J., Salmond, D. J., & Smith, A. F. M. (1993). Novel approach to nonlinear/non-Gaussian Bayesian state estimation. IEE Proceedings F (Radar and Signal Processing), 140(2), 107–113. DOI ↗ |
| অপর নাম≠ | EnKF, Monte Carlo Kalman Filter, Stochastic Ensemble Filter, Topluluk Kalman Filtresi | SMC, sequential Monte Carlo, bootstrap filter, condensation algorithm |
| সম্পর্কিত≠ | 3 | 4 |
| সারসংক্ষেপ≠ | The Ensemble Kalman Filter (EnKF) is a sequential Monte Carlo data assimilation algorithm introduced by Geir Evensen in 1994. It extends the classical Kalman filter to high-dimensional, nonlinear dynamical systems by representing the forecast error covariance through a finite ensemble of model realizations rather than propagating a full covariance matrix. Each ensemble member evolves through the nonlinear model, and observations are assimilated by computing a sample-based Kalman gain, making the method computationally tractable for large geophysical models. | The particle filter, introduced by Gordon, Salmond, and Smith in 1993, is a sequential Monte Carlo algorithm that approximates the Bayesian filtering distribution for nonlinear and non-Gaussian state-space models. Rather than tracking a single best estimate, it maintains a cloud of N weighted random samples — particles — that collectively represent the full posterior distribution of a hidden state at each point in time as new observations arrive. |
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