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NEW QUESTION: 1
How can you get a neural network to learn about relationships between categories in a categorical feature?
A. Create a hash bucket
B. Create a one-hot column
C. Create a multi-hot column
D. Create an embedding column
Answer: D
Explanation:
There are two problems with one-hot encoding. First, it has high dimensionality, meaning that instead of having just one value, like a continuous feature, it has many values, or dimensions. This makes computation more time-consuming, especially if a feature has a very large number of categories. The second problem is that it doesn't encode any relationships between the categories. They are completely independent from each other, so the network has no way of knowing which ones are similar to each other.
Both of these problems can be solved by representing a categorical feature with an embedding column. The idea is that each category has a smaller vector with, let's say, 5 values in it.
But unlike a one-hot vector, the values are not usually 0. The values are weights, similar to the weights that are used for basic features in a neural network. The difference is that each category has a set of weights (5 of them in this case).
You can think of each value in the embedding vector as a feature of the category. So, if two categories are very similar to each other, then their embedding vectors should be very similar too.
Reference: https://cloudacademy.com/google/introduction-to-google-cloud-machine-learning-engine-course/a-wide-and-deep-model.html

NEW QUESTION: 2
회사 보안 팀은 Amazon S3 버킷에 업로드 된 모든 데이터를 암호화해야 한다고 쿼리합니다. 암호화 키는 가용성이 높아야 하며 회사는 다른 사용자가 다른 암호화 키에 액세스 할 수 있도록 사용자별로 액세스를 제어 할 수 있어야 합니다.
다음 중 어떤 아키텍처가 이러한 요구 사항을 충족합니까? (2 개를 선택하십시오.)
A. AWS KMS 관리 키와 함께 Amazon S3 서버 측 암호화를 사용하고 여러 고객 마스터 키를 생성 한 다음 키 정책을 사용하여 액세스를 제어하십시오.
B. 고객 관리 키와 함께 Amazon S3 서버 측 암호화를 사용하고 고 가용성 모드로 구성된 두 개의 AWS CloudHSM 인스턴스를 사용하여 키를 관리하십시오. Cloud HSM 클라이언트 소프트웨어를 사용하여 생성 된 키에 대한 액세스를 제어하십시오.
C. Amazon S3 관리 키와 함께 Amazon S3 서버 측 암호화를 사용하십시오. Amazon S3가 AWS / S3 마스터 키를 생성하도록 허용하고 IAM을 사용하여 생성 된 데이터 키에 대한 액세스를 제어하십시오.
D. 고객 관리 키와 함께 Amazon S3 서버 측 암호화를 사용하고 고 가용성 모드로 구성된 두 개의 AWS CloudHSM 인스턴스를 사용하여 키를 관리하십시오. IAM을 사용하여 CloudHSM에서 생성 된 키에 대한 액세스를 제어하십시오.
E. 고객 관리 키와 함께 Amazon S3 서버 측 암호화를 사용하고 AWS CloudHSM을 사용하여 키를 관리하십시오. CloudHSM 클라이언트 소프트웨어를 사용하여 생성 된 키에 대한 액세스를 제어하십시오.
Answer: C,E

NEW QUESTION: 3
The information within an IAM policy is described through a series of ______.
A. macros
B. elements
C. classes
D. namespaces
Answer: B
Explanation:
Explanation/Reference:
Explanation:
While creating an IAM policy, it includes many elements that you can use to define or create a poli-cy. The elements that a policy can contain are as follows: Version, Id, Statement, Sid, Effect, Prin-cipal, NotPrincipal, Action, NonAction, Resource, NotResource, Condition, and Supported Data Types.
Reference:
http://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_elements.html