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Table 4 Estimation algorithms applicable to optimization criteria in Table 3

From: Sensor models and localization algorithms for sensor networks based on received signal strength

Grid-based x ^ o =arg min x { x ( 1 ) , x ( 2 ) , , x ( L ) } V ( x )
Steepest descent x ^ j o = x ^ j - 1 o - μ k x [ V ( x ) ]
Newton-Raphson x ^ j o = x ^ j - 1 o + μ k ( x [ x T [ V ( x ) ] ] ) - 1 x [ V ( x ) ]