Question: What machine has the same name as another machine created by Ludwig Boltzmann?

Context:
Boltzmann machine
A Boltzmann machine is a type of stochastic recurrent neural network (and Markov Random Field).
Boltzmann Medal
The Boltzmann Medal (or Boltzmann Award) is the most important prize awarded to physicists that obtain new results concerning statistical mechanics; it is named after the celebrated physicist Ludwig Boltzmann.
 The Boltzmann Medal is awarded once every three years by the "Commission on Statistical Physics of the International Union of Pure and Applied Physics", during the STATPHYS conference.
Ludwig Boltzmann Gesellschaft
The Ludwig Boltzmann Gesellschaft (LBG) is an Austrian network of specialized research institutes that are not part of a university.
 It was founded in 1961 and named after physicist Ludwig Boltzmann.
 In 1999, the Ludwig Boltzmann Gesellschaft comprised 131 institutes in the fields of medicine, humanities and social sciences.
 After 2006, the number of institutes was greatly reduced.
Boltzmann constant
The Boltzmann constant ("k" or k ), which is named after Ludwig Boltzmann, is a physical constant relating the average kinetic energy of particles in a gas with the temperature of the gas.
 It is the gas constant R divided by the Avogadro constant "N" :
Boltzmann equation
The Boltzmann equation or Boltzmann transport equation (BTE) describes the statistical behaviour of a thermodynamic system not in a state of equilibrium, devised by Ludwig Boltzmann in 1872.
Ludwig Boltzmann Prize
The Ludwig Boltzmann Prize is awarded by the Austrian Physical Society and honors outstanding achievements in theoretical physics.
 It is named after the famous Austrian physicist Ludwig Boltzmann.
Ludwig Boltzmann Institut für Menschenrechte
The Ludwig Boltzmann Institute of Human Rights (German: Ludwig Boltzmann Institut für Menschenrechte, BIM) is a Vienna-based research institute affiliated with the Austrian Ludwig Boltzmann Gesellschaft, that specializes in the area of human rights.
Stefan–Boltzmann constant
The Stefan–Boltzmann constant (also Stefan's constant), a physical constant denoted by the Greek letter "σ" (sigma), is the constant of proportionality in the Stefan–Boltzmann law: "the total intensity radiated over all wavelengths increases as the temperature increases", of a black body which is proportional to the fourth power of the thermodynamic temperature.
 The theory of thermal radiation lays down the theory of quantum mechanics, by using physics to relate to molecular, atomic and sub-atomic levels.
 Slovenian physicist Josef Stefan formulated the constant in 1879, and it was later derived in 1884 by Austrian physicist Ludwig Boltzmann.
 The equation can also be derived from Planck's Law, by integrating over all wavelengths at a given temperature, which will represent a small flat black body box.
 "The amount of thermal radiation emitted increases rapidly and the principal frequency of the radiation becomes higher with increasing temperatures".
 The Stefan–Boltzmann constant can be used to measure the amount of heat that is emitted by a blackbody, which absorbs all of the radiant energy that hits it, and will emit all the radiant energy.
 Furthermore, the Stefan–Boltzmann constant allows for temperature (K) to be converted to units for intensity (W m), which is power per unit area.
Ludwig Boltzmann Institute for Neo-Latin Studies
The Ludwig Boltzmann Institute for Neo-Latin Studies (LBI) (German: "Ludwig Boltzmann Institut für Neulateinische Studien" ) in Innsbruck is a research institute of the Austrian Ludwig Boltzmann Gesellschaft.
 Partner organizations of the LBI are the University of Innsbruck, the University of Freiburg, the Austrian National Library in Vienna, and the Pontificio Comitato di Scienze Storiche in Rome.
Ludwig Boltzmann
Ludwig Eduard Boltzmann (February 20, 1844 – September 5, 1906) was an Austrian physicist and philosopher whose greatest achievement was in the development of statistical mechanics, which explains and predicts how the properties of atoms (such as mass, charge, and structure) determine the physical properties of matter (such as viscosity, thermal conductivity, and diffusion).

Answer: Boltzmann machine