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[General] DASCA SDS Exam Simulator Free, SDS Discount

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【General】 DASCA SDS Exam Simulator Free, SDS Discount

Posted at 10 hour before      View:12 | Replies:1        Print      Only Author   [Copy Link] 1#
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DASCA Senior Data Scientist Sample Questions (Q29-Q34):NEW QUESTION # 29
Which of the following is an example of NLP?
  • A. Finding which text documents are about similar topics
  • B. Using Twitter to assess public sentiment
  • C. All of the above
  • D. Both A and C
  • E. Flagging e-mails as spam
Answer: C
Explanation:
Natural Language Processing (NLP) is the field of machine learning that deals with human language understanding and generation. Applications include:
Option A (Spam detection): NLP techniques classify emails based on text patterns and context.
Option B (Sentiment analysis on Twitter): NLP models analyze textual data to extract emotions, opinions, and trends.
Option C (Topic modeling): NLP clustering and probabilistic models (e.g., LDA) classify documents by semantic similarity.
Since all are valid NLP applications, the correct answer is Option E (All of the above).
Reference:
DASCA Data Scientist Knowledge Framework (DSKF) - Applications of Machine Learning: NLP in Real- World Use Cases.

NEW QUESTION # 30
Which of the following is the common evolutionary algorithm of neural networks?
  • A. Evolution strategy
  • B. All of the above
  • C. Genetic programming
  • D. Genetic algorithm
Answer: B
Explanation:
Evolutionary algorithms are optimization techniques inspired by natural selection. They are often applied in neural network optimization for evolving architectures, weights, or hyperparameters.
Genetic Algorithm (Option A): Uses selection, crossover, and mutation to evolve neural network parameters.
Genetic Programming (Option B): Evolves computer programs or expressions; can be applied to evolve neural network structures.
Evolution Strategy (Option C): Focuses on optimization using mutation and adaptation of parameters.
Since all are used as evolutionary approaches in neural networks, the correct answer is Option D (All of the above).
Reference:
DASCA Data Scientist Knowledge Framework (DSKF) - Neural Networks: Evolutionary Algorithms in Machine Learning.

NEW QUESTION # 31
Which of the following is FALSE for Social Network Analysis (SNA)?
  • A. Social Network Analysis (SNA) is an example of trend analysis
  • B. Social Network Analysis (SNA) is an example of graph analysis
  • C. None of the above
  • D. SNA characterizes networked structures in terms of nodes and the ties or edges that connect them
  • E. SNA is used to investigate social structures and relationships across social networks
Answer: A
Explanation:
Social Network Analysis (SNA) is a powerful analytical method that applies graph theory to study relationships among entities (people, organizations, computers, etc.).
Option A: Correct. SNA is indeed an example of graph analysis because it models entities as nodes and their relationships as edges/ties.
Option B: FALSE. SNA is not an example of trend analysis. Trend analysis focuses on temporal patterns (time series), while SNA is structural and relational.
Option C: Correct. SNA investigates structures such as communities, influencers, and information diffusion in networks.
Option D: Correct. The characterization of nodes and edges is central to SNA.
Option E: Incorrect, since we've identified Option B as false.
Thus, the false statement is Option B.
Reference:
DASCA Data Scientist Knowledge Framework (DSKF) - Analytics: Graph Analysis & Social Network Analysis.

NEW QUESTION # 32
Which of the following is NOT an example of the applications of neural networks?
  • A. Character recognition
  • B. Stock market prediction
  • C. None of the above
  • D. Image compression
  • E. Traveling salesman's problem
Answer: E
Explanation:
Neural networks have been widely applied in various domains:
Option A (Character recognition): Correct application - neural networks are highly effective for OCR (Optical Character Recognition).
Option B (Stock market prediction): Correct application - neural networks are used to model time-series and nonlinear patterns in finance.
Option D (Image compression): Correct application - neural nets (autoencoders) are used for dimensionality reduction and compression.
Option C (Traveling salesman's problem): NOT a typical neural network application. This is a combinatorial optimization problem usually solved with heuristics, dynamic programming, or optimization algorithms (not standard neural networks).
Thus, the correct answer is Option C (Traveling salesman's problem).
Reference:
DASCA Data Scientist Knowledge Framework (DSKF) - Machine Learning Applications of Neural Networks.

NEW QUESTION # 33
What is Scrum?
  • A. Agile is a subset of Scrum
  • B. Scrum and Agile are the same
  • C. Scrum is a subset of Agile
  • D. None of the above
Answer: C
Explanation:
Scrum is a framework used to implement Agile principles. Agile itself is the overarching philosophy or mindset, while Scrum is one of the most popular frameworks that apply Agile values in practice.
Option A (Correct): Scrum is indeed a subset of Agile. Agile defines the principles (from the Agile Manifesto), and Scrum provides the structure (roles, artifacts, ceremonies).
Option B: Incorrect. Agile is broader and not a subset of Scrum.
Option C: Incorrect. Scrum and Agile are not the same; Agile is the philosophy, Scrum is a methodology under Agile.
Option D: Incorrect because Option A is valid.
Thus, the correct answer is Option A: Scrum is a subset of Agile.
Reference:
DASCA Data Scientist Knowledge Framework (DSKF) - Agile and Scrum in Data Science Projects.

NEW QUESTION # 34
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Posted at 7 hour before        Only Author  2#
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