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DTSA 5505 - Data Mining Methods (Study Cards) Actual 2026/2027 Questions And Correct Answers

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DTSA 5505 - Data Mining Methods (Study Cards) Actual 2026/2027 Questions And Correct Answers

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DTSA 5505 - Data Mining Methods
(Study Cards)
Zero-chance - ANS-Add 1 to every case (Laplacian correction)

A consumer bikes twice each week. What type of temporal sample is this? - ANS-Cyclic

accuracy - ANS-sensitivity * (pos/pos+neg) + specificity *(neg/pos+neg)

Application Domains of Data Mining - ANS-Healthcare, Business Intelligence,
Earth/surroundings, medical discovery, industry AI

Apriori Algorithm - ANS-A speedy method of finding common itemsets, which additionally entails
pruning non-common objects and self-becoming a member of of okay-itemsets most effective if
their first (k-1) items are the same.

Association Rules - ANS-Association regulations specify a relation among attributes that
appears extra frequently than expected if the attributes were impartial.

Backpropagation - ANS-category error => weight adjustment

Bayes' Theorem - ANS-The probability of an occasion occurring based upon different event
chances.

Bayesian Belief Networks - ANS-A records mining method this is used to deliver advanced
know-how based structures to remedy real-international problems. Involves the conditional
dependency of variables and normally consists of a conditional chance desk.

Bi-Clustering - ANS-Cluster each items and attributes

demanding situations of anomaly detection - ANS-Normal vs. Bizarre, performance (latency,
scalability), interpretability

Classification - ANS-categorical elegance labels (e.G. Fraud detection)

Classification-based totally Methods for Anomaly Detection - ANS-Supervised Learning,
Challenges: Class imbalance, New Patterns

Clustering-based Methods for Anomaly Detection - ANS-Unsupervised Learning, Generalizable
to one-of-a-kind applications (Clustering Method, Similarity Measure)

, Collective Anomaly - ANS-group of items deviate from the norm), structural courting amongst
objects, awesome object (organization of associated items)

Collective outlier - ANS-When a collection of objects vary from the relaxation

Confidence - ANS-P(Ylessons (the observations) with instructions acquired with the aid of a few
extra correct system, or from a extra correct source (the reference)

Constraint-based totally Clustering - ANS-Benefits: involves targeted mining, area know-how,
and efficiency (e.G. Objects can include sales in precise place/time/category); Distance features
encompass weighted attributes and boundaries

Contextual Anomaly - ANS-Context capabilities (behavior features; e.G. Similar climate
conditions) , Identifying context (frequent patterns), Detecting anomaly within context

Contextual outlier - ANS-When an object differs in a context

Correlation policies - ANS-Measure of dependent/correlated events: carry(A,B) = P(A U B) /
P(A)P(B)

Data Fusion - ANS-multi-modal records

Decision Tree Induction - ANS-Basic set of rules: Attribute choice, characteristic break up

Key houses: pinnacle-down, recursive (divide-and-overcome, grasping)

deep neural network (DNN) - ANS-Refers to a neural network with multiple hidden layer (e.G.
Convolutional neural community)

DENCLUE - ANS-Influence function, universal density

Density-Based Clustering - ANS-Local clusters with high density (e.G. DBSCAN-connected
dense community, DENCLUE - sum of nearby impact features).

Key capabilities: arbitrary cluster space, noise-tolerant, unmarried experiment, adjustable
density parameters

Ensemble - ANS-Combined use of more than one models, Bagging (same weights, majority
vote casting, training set has random sample with substitute), Boosting (weighted votes)

Example of spatial temporal anomaly? - ANS-Remote sensing statistics

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