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IBM C7020-230 exam questions and answers | Passtcert

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Share some IBM Certified Application Developer C7020-230 exam questions and answers below.
Which statement best describes the unsupervised learning process when performing clustering on a large data set?

A. The system understands the significance of the data points and a cognitive sub-process clusters the data, removing the need for a human supervisor.

B. A neural network is deployed in unsupervised mode to determine to which cluster a data point belongs.

C. Examples of data points and their associated cluster are fed into the system allowing it to learn and generalize for the rest of the data set.

D. Data points are compared at random and the differences between their features are used to determine whether they belong in the same cluster or not.

Answer: D

What is an approach for integrating a database into an IBM Watson solution?

A. Use the Discovery service to search through candidate queries and surface the ones most relevant to the user input.

B. Use the Document Conversion service to search the database for the entries with the strongest relationship to the user input.

C. Use the intent from the Natural Language Classifier as part of a query.

D. Use the concepts from Natural Language Understanding to search the database for the most relevant documents.

Answer: D

Which IBM Watson service is pre-trained and does not allow for any customization?

A. Natural Language Understanding

B. Speech to Text

C. Discovery

D. Tone Analyzer

Answer: A

A cognitive FAQ widget on a company¡¯s support portal allows users to ask questions related to the company and its products.

Which two IBM Watson services will create this pattern? (Choose two.)

A. Tradeoff Analytics

B. Natural Language Understanding service Semantic Roles API

C. Conversation

D. Discovery

E. Personality Insights

Answer: B,C

A system with a set of classifiers is trained to recognize eight different company logos from images. It is 78% accurate. Without further information, which statement is true?

A. The system has 78% precision and recall.

B. The system has a precision of 78% and a recall of 22%.

C. The system is equally reliable for classifying any one of the eight logo types 78% of the time.

D. The accuracy of the system for any one class cannot be determined.

Answer: C

Which actions depict configuring IBM Watson Discovery service collection?

A. Converting, enriching and normalizing sample data.

B. Switching from a default configuration to a custom configuration using uploaded personal data.

C. Testing which query methods result in accurate answers.

D. Determining how much space must be allocated to an environment.

Answer: A

How can a developer prevent IBM Bluemix from logging data in an API request to an IBM Watson service?

A. Set a header parameter called X-Stop-Training-Watson to true in the HTTP request.

B. Disable training from in the IBM Bluemix dashboard.

C. Pass a parameter called DisableTraining=false in the API request.

D. Set a header parameter called X-Watson-Learning-Opt-Out with the value true in the HTTP request.

Answer: D

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