Practice Set 3

A Machine Learning Specialist is configuring Amazon SageMaker so multiple Data Scientists can access notebooks, train models, and deploy endpoints. To ensure the best operational performance, the Specialist needs to be able to track how often the Scientists are deploying models, GPU and CPU utilization on the deployed SageMaker endpoints, and all errors that are generated when an endpoint is invoked.Which services are integrated with Amazon SageMaker to track this information? (Choose two.) [{"voted_answers": "AD", "vote_count": 7, "is_most_voted": true}, {"voted_answers": "AC", "vote_count": 2, "is_most_voted": false}]

A retail chain has been ingesting purchasing records from its network of 20,000 stores to Amazon S3 using Amazon Kinesis Data Firehose. To support training an improved machine learning model, training records will require new but simple transformations, and some attributes will be combined. The model needs to be retrained daily.Given the large number of stores and the legacy data ingestion, which change will require the LEAST amount of development effort? [{"voted_answers": "D", "vote_count": 4, "is_most_voted": true}]

A Machine Learning Specialist is building a convolutional neural network (CNN) that will classify 10 types of animals. The Specialist has built a series of layers in a neural network that will take an input image of an animal, pass it through a series of convolutional and pooling layers, and then finally pass it through a dense and fully connected layer with 10 nodes. The Specialist would like to get an output from the neural network that is a probability distribution of how likely it is that the input image belongs to each of the 10 classes.Which function will produce the desired output? [{"voted_answers": "C", "vote_count": 4, "is_most_voted": true}]

A Machine Learning Specialist trained a regression model, but the first iteration needs optimizing. The Specialist needs to understand whether the model is more frequently overestimating or underestimating the target.What option can the Specialist use to determine whether it is overestimating or underestimating the target value? [{"voted_answers": "B", "vote_count": 7, "is_most_voted": true}]

A company wants to classify user behavior as either fraudulent or normal. Based on internal research, a Machine Learning Specialist would like to build a binary classifier based on two features: age of account and transaction month. The class distribution for these features is illustrated in the figure provided.Based on this information, which model would have the HIGHEST recall with respect to the fraudulent class? [{"voted_answers": "A", "vote_count": 17, "is_most_voted": true}, {"voted_answers": "C", "vote_count": 13, "is_most_voted": false}]

A Machine Learning Specialist kicks off a hyperparameter tuning job for a tree-based ensemble model using Amazon SageMaker with Area Under the ROC Curve(AUC) as the objective metric. This workflow will eventually be deployed in a pipeline that retrains and tunes hyperparameters each night to model click-through on data that goes stale every 24 hours.With the goal of decreasing the amount of time it takes to train these models, and ultimately to decrease costs, the Specialist wants to reconfigure the input hyperparameter range(s).Which visualization will accomplish this? [{"voted_answers": "D", "vote_count": 13, "is_most_voted": true}, {"voted_answers": "C", "vote_count": 4, "is_most_voted": false}]

A Machine Learning Specialist is creating a new natural language processing application that processes a dataset comprised of 1 million sentences. The aim is to then run Word2Vec to generate embeddings of the sentences and enable different types of predictions.Here is an example from the dataset:"The quck BROWN FOX jumps over the lazy dog.`Which of the following are the operations the Specialist needs to perform to correctly sanitize and prepare the data in a repeatable manner? (Choose three.) [{"voted_answers": "BCF", "vote_count": 5, "is_most_voted": true}, {"voted_answers": "BDF", "vote_count": 3, "is_most_voted": false}]

A company is using Amazon Polly to translate plaintext documents to speech for automated company announcements. However, company acronyms are being mispronounced in the current documents.How should a Machine Learning Specialist address this issue for future documents? [{"voted_answers": "B", "vote_count": 26, "is_most_voted": true}, {"voted_answers": "A", "vote_count": 5, "is_most_voted": false}]

An insurance company is developing a new device for vehicles that uses a camera to observe drivers' behavior and alert them when they appear distracted. The company created approximately 10,000 training images in a controlled environment that a Machine Learning Specialist will use to train and evaluate machine learning models.During the model evaluation, the Specialist notices that the training error rate diminishes faster as the number of epochs increases and the model is not accurately inferring on the unseen test images.Which of the following should be used to resolve this issue? (Choose two.) [{"voted_answers": "BE", "vote_count": 7, "is_most_voted": true}]

When submitting Amazon SageMaker training jobs using one of the built-in algorithms, which common parameters MUST be specified? (Choose three.) [{"voted_answers": "ACF", "vote_count": 17, "is_most_voted": true}, {"voted_answers": "CEF", "vote_count": 14, "is_most_voted": false}, {"voted_answers": "AEF", "vote_count": 3, "is_most_voted": false}, {"voted_answers": "ACD", "vote_count": 2, "is_most_voted": false}, {"voted_answers": "ADE", "vote_count": 1, "is_most_voted": false}, {"voted_answers": "ADF", "vote_count": 1, "is_most_voted": false}]