** Particle beam

** Particle displacement, a measurement of distance of the movement of a particle in a medium as it transmits a wave ( represented in mathematics by the lower-case Greek letter ξ )

** Particle aggregation, direct mutual attraction between particles ( atoms or molecules ) via van der Waals forces or chemical bonding

** F9 Experimental Particle Physics

** Tom Foster, Bill Foster's nephew, a student at MIT, worked to crack the Pym Particle code and become the new Goliath after his uncle's death.

** Standalone Particle System

** Particle Beam Treatment System

** – Keith Mason is appointed as the new head of the Particle Physics and Astronomy Research Council in the UK.

** the Particle number in thermodynamics

** Interference filter

** Dichroic filter

** Electronic filter, an electronic circuit which processes signals, for example to remove unwanted frequency components

** Digital filter, a system that performs mathematical operations to reduce or enhance certain aspects of a signal

** Analogue filter, a basic building block of signal processing much used in electronics, see Passive analogue filter development

** Email filter

** Internet filter

** Affective filter, an impediment to learning or acquisition caused by negative emotional (" affective ") responses to one's environment.

** Cabin pollen filter added.

** DSL filter, also known as a POTS filter

** Kalman filter

** QuarkXPress 6. 1 ( 2004 )-First version with Excel Import filter.

** Jive filter, an English-to -" Jive " automatic translation program

** nops: filter out redundant modifies

** Subtractive synthesis, a method of creating a sound by removing harmonics, characterised by the application of an audio filter to an audio signal

** Pass band or Passband, the range of frequencies that can pass through an electronic filter without being attenuated

** SAW filter, a type of electronic filter

** In the case of narrow-band bandpass filters, the Q determines the-3dB bandwidth but also the degree of rejection of frequencies far removed from the center frequency ; if these two requirements are in conflict then a staggered-tuning bandpass filter may be needed.

** For high-pass and low-pass ( as well as band-pass filters far from the center frequency ), the required rejection may determine the slope of attenuation needed, and thus the " order " of the filter.

** Chebyshev filter – slight peaking / ripple in the passband before the corner ; Q > 0. 7071 for 2nd-order filters

** Butterworth filter – flattest amplitude response ; Q = 0. 7071 for 2nd-order filters

Laser Particle Counters are an effective way to measure filter effectiveness, medical grade can test for particles as small as 0. 3 micrometres.

* Particle filter

The Kalman filter and the Particle filter are two examples of popular Bayesian control components.

* Particle filter

# REDIRECT Particle filter

Result of particle filtering ( red line ) based on observed data generated from the blue line (: Image: Particle filter example. png | Larger version )

Particle filters are usually used to estimate Bayesian models in which the latent variables are connected in a Markov chain — similar to a hidden Markov model ( HMM ), but typically where the state space of the latent variables is continuous rather than discrete, and not sufficiently restricted to make exact inference tractable ( as, for example, in a linear dynamical system, where the state space of the latent variables is restricted to Gaussian distributions and hence exact inference can be done efficiently using a Kalman filter ).

* Particle filter

* Particle filter

*: Image: Particle filter example small. png for a smaller image for thumbnails in an article

* Particle filter

* Particle filter: useful for sampling the underlying state-space distribution of nonlinear and non-Gaussian processes.

* Sampling Importance Resampling ( SIR ) filters ( Particle filter / weighted Bootstrap ; with general and Kalman implementations )

* Particle filter, a sequential Monte Carlo ( SMC ) based technique, which models the PDF using a set of discrete points

# REDIRECT Particle filter # Sampling Importance Resampling ( SIR )

# REDIRECT Particle filter