Idanwo ti o sopọ mọ itọsọna · Lile Ipele

Bayesian Jin Learning adanwo

Explore Bayesian networks, uncertain weights, posterior approximations, Monte Carlo dropout, and confidence calibration on held-out data.

Jẹmọ itọsọna awọn ọnaBayesian Jin Learning
Ibeere 1 ti 8

Bawo ni nẹtiwọọki neural Bayesian ṣe tọju awọn iwuwo rẹ yatọ si ọkan boṣewa?

Awotẹlẹ gbogbo ibeere8 ibeere

Awọn idahun ati awọn alaye han bi o ṣe n mu ibeere naa.

  1. Bawo ni nẹtiwọọki neural Bayesian ṣe tọju awọn iwuwo rẹ yatọ si ọkan boṣewa?
    • O ṣe itọju iwuwo kọọkan bi pinpin iṣeeṣe dipo iye ti o wa titi ẹyọkan
    • O nlo odidi òṣuwọn dipo eleemewa
    • O yọ awọn iwuwo kuro patapata
    • O pin iwuwo kan kọja gbogbo awọn fẹlẹfẹlẹ
  2. What can a Bayesian approach provide that a single fixed-weight network does not directly represent?
    • A guarantee that every confidence score is calibrated
    • A distribution of predictions that reflects uncertainty about model weights
    • A proof that the model will detect every unfamiliar input
    • A way to remove all noise from the data
  3. How can epistemic uncertainty change as relevant, representative training data are added?
    • It is guaranteed to reach zero with any added data
    • It is identical to label noise
    • It may decrease under the chosen model and data assumptions
    • It always increases linearly
  4. Kini idi ti awọn isunmọ bii itọkasi iyatọ tabi MCMC nilo?
    • Nitori awọn nẹtiwọọki nkankikan ko ni iṣẹ ipadanu
    • Nitori awọn GPU ko le ṣe afikun
    • Nitori awọn iwuwo gbọdọ jẹ odidi
    • Nitori ẹhin gangan lori awọn miliọnu awọn iwuwo jẹ aibikita
  5. Kini yiyọkuro Monte Carlo ṣe lati ṣe iṣiro aidaniloju?
    • Ṣe itọju yiyọ kuro lọwọ ni akoko idanwo ati ṣiṣe nẹtiwọọki ni ọpọlọpọ igba, ni lilo itankale awọn abajade
    • Yipada yiyọ kuro ati ọkọ oju irin to gun
    • Yọ gbogbo awọn neuronu kuro patapata
    • Rọpo pipadanu pẹlu ariwo laileto
  6. Itọkasi iyatọ ṣe atunṣe iṣiro ẹhin bi iru iṣoro wo?
    • Iṣoro yiyan
    • Iṣoro iṣapeye ti o dinku iyatọ KL (nipasẹ ELBO)
    • A funfun ID iṣapẹẹrẹ isoro pẹlu ko si ohun to
    • A hardware oniru isoro
  7. How does Bayes’ rule relate a prior, likelihood, and posterior?
    • The posterior is the prior plus the likelihood, without normalization
    • It is the likelihood divided by the prior without normalization
    • The posterior is proportional to the prior times the likelihood
    • It is the fixed point estimate of the most likely weight vector
  8. How does MCMC approximate a Bayesian neural-network posterior?
    • By training a single point estimate with dropout disabled
    • By ranking model outputs with a fixed rule
    • By minimizing an ELBO with a simpler variational family
    • By drawing samples through a Markov chain whose stationary distribution targets the posterior