We want to run plsa on a collection of n documents with a fixed number of topics k where the vocabulary size is m. what is the number of parameters that plsa tries to estimate? consider each p(w|θj) or πd, j as a separate parameter.
a. mnk
b. mk
c. mk+nk
d. nk

Will give ! what are the advantages and disadvantages of nuclear power? check all that apply. one advantage of nuclear energy is that it does not produce carbon dioxide emissions. storage of nuclear waste is a short-term problem associated with nuclear energy. the problem with uranium mining is that a large quantity of uranium must be extracted to meet energy needs because the energy release from uranium fission is so low. safe operation of a nuclear power plant can be jeopardized by a human mistake.

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains

Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic