Kedis ku xidhan hagaha · Dhexdhexaad Heerka

Astaamaha Lag ee Kediska Saadaasha Wakhtiga Taxanaha ah

Dhis muuqaalada dib-u-dhac ku yimid wakhtiga saxda ah, ogow khataraha daadinta oo dooro kala qaybsanaan ansaxinta oo u eeg isticmaalka saadaalinta mustaqbalka.

Wadooyinka haga ee la xidhiidhaTilmaamaha Lag ee Saadaasha Taxanaha Wakhtiga
Su'aal 1 ee 8

To forecast y_t before time t, which lag feature is temporally valid?

Horudhac su'aal kasta8 su'aalo

Jawaabaha iyo sharraxaadaha waxay soo baxayaan markaad qaadanayso kediska.

  1. To forecast y_t before time t, which lag feature is temporally valid?
    • y_(t-1)
    • y_(t+1)
    • The realized value y_t
    • The average of all observations through the test period
  2. Where should a trailing seven-day mean end when predicting the next day's value?
    • At the target day including its actual value
    • At the last fully observed day before the target
    • At the end of the full evaluation dataset
    • At the future forecast horizon
  3. Why can a random split give an unrealistic time-series evaluation?
    • It removes all seasonal structure
    • It makes every lag feature missing
    • Future rows may train a model evaluated on earlier periods
    • Waxay dammaanad qaadaysaa in safafka imtixaanku ka horreeyaan safafka tababarka
  4. Goorma ayaa tilmaanta fasaxa la qorsheeyay u yahay sifa saadaasha ansax ah?
    • Mar kasta oo saxsanaanta moodelku soo hagaagto
    • Kaliya ka dib marka fasaxu dhaco
    • Marka la xisaabiyo iyadoo la isticmaalayo natiijada imtixaanada
    • Marka macluumaadka kalandarka la yaqaan waqtiga saadaasha
  5. Maxay tahay sababta kala qaybsanaanta ansaxinta ay ku jirto farqiga?
    • Si saadaasha saadaasha looga dhigo random
    • Calaamadaha dib u dhaca ama daaqadaha is dulsaaran ayaa haddii kale ka gudbi kara xadka
    • Si loo hubiyo in dhammaan sifooyinka la jaangooyey laba jeer
    • Si loo kordhiyo xogta tababarka iyadoo la eegayo mustaqbalka
  6. Sidee bay tahay in miisaan-qaadista ama tix-raacu ay ku habboon tahay muddada-xilliyeedka-waqtiga-xaqiijinta?
    • Kaliya on set imtixaanka u dambeeya
    • Hal mar dhammaan taariikhaha ka hor inta aan la kala bixin
    • Tababar kasta laalaab kaliya
    • Si gooni ah muuqaal kasta oo shakhsi ah ka dib saadaasha
  7. Nidaamkee ayaa si isdaba joog ah u dhalinaya saadaalin dhowr tallaabo ah?
    • Ka saar dhammaan astaamaha dib u dhaca saadaasha kowaad kadib
    • Isticmaal kaliya qiyamka dhabta ah ee mustaqbalka talaabo kasta
    • U tababar nooc gaar ah fasal kasta oo bartilmaameed ah
    • Ku quudi saadaasha hore sifada saadaasha dambe
  8. Muxuu dib u soo saari karaa qiimeyn la isku halayn karo?
    • Macluumaadka laga heli karo asal kasta oo saadaasha ah iyo caddaynta dib-u-tabinta loogu talagalay
    • Kaliya matrix muujinta kama dambaysta ah kadib marka dhammaan xogta la ururiyo
    • Nidaam random ah ee bartilmaameedyada taariikhiga ah
    • Habka saxda ah ee tababarka oo keliya