SENG $281$ FINAL EXAM $2022$ Fall Semester

$12$ January $2023$ at $9$:$00$ am; $60$ minutes; $100$ points.

ATTENTION: Answer all questions yourself without using a cellphone, notebook, textbook, Internet access, or help from someone else. Answer all questions on the answer sheet; any writing on the questn sheet will not be graded. Carefully read each question, plan your answer, and then clearly express yourself; keep your answer brief but to the point. Answer all questions in sequence and English on

Q$1.(20$ p$)$ Consider the following example dataset with three attributes as presented in the table on the right: Savings $($low$,$ medium, high$),$ Assets $($low$,$ medium, high$),$ Income $($numerical value$),$ and a binary class label Credit risk $($good$,$ bad$).$ Construct a decision tree heuristically $($as we did in class$)$ to decide on the Credit Risk of an applicant.

Q$2.(10$ p$)$ Define each of the following in one sentence:

$\backslash$table$[[$Customer$,$Savings,Assets,Income $(51000$s$),$Credit risk$],[1,$Medium,Hegh,$75,$Good$],[2,$Low,Low,$50,$Bad$],[3,$High,Medium,$25,$Bad$],[4,$Medium,Medium,$50,$Good$],[5,$Low,Medum,$100,$Cood$],[6,$High,Hgh$,25,$Good$],[7,$Low,Low,$25,$Bad$],[8,$Medium,Medium,$75,$Good$]]$

KDD

DM

Centrality

Eigenvector Centrality

PageRank