Maswali ya Usahihi na Kukumbuka

Majibu na maelezo huonekana unapojibu maswali.

1. Usahihi hujibu swali gani?
   • Kati ya mambo yote chanya, tulikamata ngapi?
   • Kati ya vitu vyote tulivyotabiri chanya, ni vingapi vilikuwa chanya kweli?
   • Je, mtindo huo ni sahihi kwa kiasi gani kwa ujumla?
   • Je, tulipata hasi ngapi za kweli?
2. Kumbuka pia inajulikana kama:
   • Umaalumu
   • Usahihi
   • Usahihi
   • Unyeti (kiwango chanya cha kweli)
3. On a fixed evaluation set, lowering a positive-class decision threshold usually produces which tradeoff?
   • Recall can increase while precision can fall
   • Precision and recall must increase by equal amounts
   • The model necessarily predicts fewer positives
   • Neither metric can ever change
4. Kwa uchunguzi wa uchunguzi wa ugonjwa ambapo kukosa mgonjwa ni mbaya zaidi kuliko kengele ya uwongo, unapaswa kutanguliza:
   • Usahihi wa juu
   • kumbukumbu ya chini
   • Ukumbusho wa hali ya juu
   • Kiwango hasi cha kweli pekee
5. Alama ya F1 inafafanuliwa kama:
   • Maana ya hesabu ya usahihi na kukumbuka
   • Maana ya Harmonic ya usahihi na kukumbuka
   • Jumla ya usahihi na kukumbuka
   • Bidhaa ya usahihi na kukumbuka
6. Why can precision and recall reveal a weakness hidden by high accuracy on a dataset dominated by negatives?
   • They focus on positive predictions and actual positives instead of rewarding a large true-negative count
   • They measure the true-negative rate directly
   • They must both exceed accuracy
   • They guarantee reliability regardless of sample size
7. A classifier has 20 true positives, 5 false positives, and 10 false negatives. Which precision and recall values follow?
   • Precision 2/3; recall 4/5
   • Precision 20/35; recall 20/35
   • Precision 1/4; recall 1/2
   • Precision 4/5; recall 2/3
8. Six of the top ten search results are relevant. What is precision@10 for that result list?
   • 100%
   • 40%
   • 60%
   • 6%