Many factors, such as reference catalogue, reduction technique and print formats were left up to the individual institutions.
In factor analysis, the researcher makes the assumption that an underlying causal model exists, whereas PCA is simply a variable reduction technique.
These are the intended results of some lithic reduction techniques, and are very desirable for opportunistic tool use that does not require retouching or sharpening.
However, Tycho-2 is much larger and a bit more precise, because a more advanced reduction technique was used.
The most effective clutter reduction technique is pulse-Doppler radar.
Chivers uses local porcelain clay bodies and fires using reduction techniques.
Some of the details, like the aluminum body structure, noise reduction technology & reduction technique, draw on the CRH3C.
The bipolar reduction technique is typified by its use of wedge initiation.
There are however, some differences in the lithic reduction techniques seen in each assemblage.
Obtaining those models requires an external algorithm which is often non-trivial and subject of many polygon reduction techniques.