Hacker News new | past | comments | ask | show | jobs | submit login

It's not a simplification. It's information theory. It's not about one-to-one encodings (eg, bit 14 is whether you live in Arizona or not -- such a scheme would be ridiculous), but rather the amount of information that a discriminator reveals.

For instance, knowing that a person lives in the US reveals a little under 5 bits of information (there are a little over 2^28 people living in the US, according to Google). The entropy is just a measure of the amount of information that gives us in narrowing down a population; not an exact encoding.

*Edit - s/science/theory/i




Consider applying for YC's Fall 2025 batch! Applications are open till Aug 4

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact

Search: