AWS Snowball User Guide
n-gram transformation Amazon Machine Learning: A transformation that aids in text string analysis.
An n-gram transformation takes a text variable as input and outputs strings by
sliding a window of size n words, where n is specified by the user, over the text,
and outputting every string of words of size n and all smaller sizes. For example,
specifying the n-gram transformation with window size =2 returns all the two-
word combinations and all of the single words.
node Amazon Elasticsearch Service (Amazon ES) (p. 111): An Elasticsearch instance. A
node can be either a data instance or a dedicated master instance.
See Also dedicated master node.
NoEcho A property of AWS CloudFormation (p. 116) parameters that prevent the
otherwise default reporting of names and values of a template parameter.
Declaring the NoEcho property causes the parameter value to be masked with
asterisks in the report by the cfn-describe-stacks command.
NoSQL Nonrelational database systems that are highly available, scalable, and optimized
for high performance. Instead of the relational model, NoSQL databases (like
Amazon DynamoDB (p. 110)) use alternate models for data management, such
as key–value pairs or document storage.
null object A null object is one whose version ID is null. Amazon S3 (p. 113) adds a null
object to a bucket (p. 122) when versioning (p. 158) for that bucket is
suspended. It is possible to have only one null object for each key in a bucket.
number of passes The number of times that you allow Amazon Machine Learning to use the same
data records to train a machine learning model.
O
Numbers and Symbols (p. 108) | A (p. 108) | B (p. 121) | C (p. 122) | D (p. 126) | E (p. 129) | F (p. 132) |
G (p. 133) | H (p. 134) | I (p. 135) | J (p. 137) | K (p. 137) | L (p. 138) | M (p. 139) | N (p. 141) | O (p. 142)
| P (p. 143) | Q (p. 146) | R (p. 146) | S (p. 149) | T (p. 155) | U (p. 157) | V (p. 158) | W (p. 159) | X, Y,
Z (p. 159)
object Amazon Simple Storage Service (Amazon S3) (p. 113): The fundamental entity
type stored in Amazon S3. Objects consist of object data and metadata. The data
portion is opaque to Amazon S3.
Amazon CloudFront (p. 110): Any entity that can be served either over HTTP or
a version of RTMP.
observation Amazon Machine Learning: A single instance of data that Amazon Machine
Learning (Amazon ML) uses to either train a machine learning model how to
predict or to generate a prediction. Each row in an Amazon ML input data file is
an observation.
On-Demand Instance An Amazon EC2 (p. 111) pricing option that charges you for compute capacity
by the hour with no long-term commitment.
operation An API function. Also called an action.
optimistic locking A strategy to ensure that an item that you want to update has not been modified
by others before you perform the update. For Amazon DynamoDB (p. 110),
optimistic locking support is provided by the AWS SDKs.
organization AWS Organizations (p. 119): An entity that you create to consolidate and
manage your AWS accounts. An organization has one master account along with
zero or more member accounts.
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