公开(公告)号：US11308281B1

公开(公告)日：2022-04-19

申请号：US16184807

申请日：2018-11-08

Applicant: Amazon Technologies, Inc.

Inventor： Kevin Michael Craft ,  Ameya Karnik ,  Rama Krishna Sandeep Pokkunuri

IPC: G06F40/284 ,  G06F40/30

Abstract: Techniques to be used in natural language understanding (NLU) are described. For example, a NLU service to receive a request to analyze a written or spoken utterance; tokenize the received utterance; generate one or more labels corresponding to a substring of the tokenized received utterance, each of the labels including one or more slot types, by: for each path of a grammar-based finite state transducer (FST) data structure that includes instructions, traversing the path as far as possible for matches from a previous breakpoint, while maintaining i) locations of branching points and snapshots at those branching points and ii) an indication of which paths have been traversed, and recording a result of each path traversal as a generated label; resolve the one or more generated labels into machine-readable values; and output a result is described.

公开(公告)号：US11281857B1

公开(公告)日：2022-03-22

申请号：US16184793

申请日：2018-11-08

Applicant: Amazon Technologies, Inc.

Inventor： Kevin Michael Craft ,  Kalpesh N. Sutaria ,  Rama Krishna Sandeep Pokkunuri ,  Stefano Stefani ,  Bangrui Liu

IPC: G06F40/284 ,  G06N20/00 ,  G06F40/30 ,  G10L15/22

Abstract: Techniques for resolving a label are described. For example, a method of generating one or more labels corresponding to a substring of a tokenized utterance, each of the labels including one or more slot types, resolving the one or more generated labels into machine-readable values by: generating a tree of the generated one or more labels, the graph including a plurality of leaf nodes, wherein each rule of associated with a leaf node references a resolver, and resolving the generated tree from the leaf nodes to a root of the generated tree, by at each node, calling the referenced resolver and passing a result from each resolver to a subsequent resolver of the tree; and outputting a result of the resolving to an entity as dictated by the request is described.

公开(公告)号：US11138374B1

公开(公告)日：2021-10-05

申请号：US16184781

申请日：2018-11-08

Applicant: Amazon Technologies, Inc.

Inventor： Kevin Michael Craft ,  Kalpesh N. Sutaria

IPC: G06F40/284 ,  G10L15/06 ,  G06N20/00 ,  G06F9/448 ,  G10L15/19 ,  G10L15/22

Abstract: Techniques for building slot types and slot type artifacts are described. For example, in some implementations, a natural language understanding (NLU) service is implemented by instructions that upon execution are to cause: receiving a request to build a slot type, the request including an indication of one or more locations storing information need to build a slot type, a slot type being a list of one or more values used to train a machine learning model to recognize a value for a slot; retrieving a slot type definition bundle associated with the request, the slot type definition bundle at least including a slot type definition defining resolution activities for the slot type; building the slot type using the retrieved slot type definition bundle; and storing into the storage slot type artifacts produced from building the slot type to be used during an analysis of an utterance.