Kediska Saxda ah iyo Xusuusashada

Jawaabaha iyo sharraxaadaha waxay soo baxayaan markaad qaadanayso kediska.

1. Su'aasha saxda ah ayaa ka jawaabeysa?
   • Dhammaan wanaagga dhabta ah, imisa ayaanu qabannay?
   • Dhammaan shayyada aan sii saadaalinnay togan, imisa ayaa run ahaantii togan?
   • Intee in le'eg ayuu yahay qaabka guud ahaan?
   • Immisa xumaan oo run ah ayaan helnay?
2. Dib u soo celinta ayaa sidoo kale loo yaqaan:
   • Gaar ahaan
   • Saxnaanta
   • Saxnaanta
   • Dareenka (qiimaha saxda ah ee dhabta ah)
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. Baaritaanka baarista cudurka halka maqnaanshaha bukaan buka ay aad uga xun tahay digniinta beenta ah, waa inaad mudnaanta siisaa:
   • Saxnimo sare
   • Xusuusin hoose
   • Xusuusin sare
   • Qiyaasta xun ee runta ah kaliya
5. Dhibcaha F1 waxaa lagu qeexay sida:
   • Xisaabta macnaha saxnaanta iyo dib u soo celinta
   • Macnaha Harmonic ee saxnaanta iyo dib u soo celinta
   • Wadarta saxnaanta iyo dib u soo celinta
   • Wax soo saarka saxnaanta iyo dib u soo celinta
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%