Estimate vectors from their imprecise sums

I am attempting to approximate specific values of 3 2 - D vectors, $x_1$, $x_2$, and also $x_3$. I have actually made numerous, inaccurate dimensions of their amounts. As an example:

$2x_3 \approx [ 1.157, -73.111]$

$x_2 + x_3 \approx [ 25.184, -55.829]$

$x_2 + 2x_3 \approx [ 26.407, -86.504]$

$2x_1 + x_2 + 3x_3 \approx [ 76.085, -96.201]$

(several, several comparable formulas)

Each dimension has some level of arbitrary mistake. I do not recognize the circulation of these mistakes, so think whatever mistake circulation you such as.

What is an excellent way to approximate the values of these 3 vectors?

Presently I'm approximating my vectors by picking 3 of these dimensions which separate $x_1$, $x_2$, or $x_3$. This overlooks a great deal of details, and also usually leaves me with significant mistake in my price quotes. I'm wishing there is a far better manner in which makes use of even more details from the added dimensions.

Various other details:

I have the specific restraint that the 3 vectors create a triangular:

$x_1 + x_2 + x_3 = 0$ (I could need to turn the indicator of among the vectors to make this real)

Generally, this triangular is close to equilateral, yet not specifically equilateral.

(This inquiry emerged throughout a photo handling trouble in speculative physics. Apologies if this is off - subject, yet it appears extra mathematics than physics to me.)

2022-06-07 14:35:25
Source Share
Answers: 1

If the dimension mistakes were generally dispersed, the linear least squares approach would certainly be your ideal method to make use of duplicated dimensions, an outcome going back to Gauss.

If you intend to specifically enforce the triangular equal rights, after that what you have are 4 scalar unknowns and also greater than 4 straight formulas (though you've just revealed 8 formulas, counting the vector parts, probably you have much more that can be adduced). When making the very same dimension over and also over, the faster way is to balance the outcome and also make use of that. If various dimensions have various varieties of reps, you can make up this with a weighted least squares approach.

The keynote is to pick the 4 unknowns so regarding decrease the (weighted?) amount of squares mistakes in suitable the dimensions.

2022-06-07 14:56:07