Recommender system and electrical telegraph: what they have in common

1. Step 1. Recommender system — uses — Artificial neural network. Preference models.
2. Step 2. Artificial neural network — is used in — Brain–computer interface. Decoding.
3. Step 3. Brain–computer interface — has part — Amplifier. A bioamplifier.
4. Step 4. Amplifier — is part of — Hearing aid. An amplifier.
5. Step 5. Hearing aid — evolved from — Telephone. The first electric hearing aids were built from telephone components.
6. Step 6. Telephone — evolved from — Electrical telegraph. The telephone grew out of attempts to send several signals over telegraph lines (the “harmonic telegraph”).

Open Evothings