Abstract: Techniques for implementing instance local boots in a cloud provider network via auxiliary domains are described. An auxiliary compute instance is launched and attached to a local storage device of the computing device. The auxiliary compute instance can pre-warm a boot volume by fetching its data from a remote system and storing the boot volume to the local storage device. The auxiliary compute instance is terminated, and a user compute device is launched into the same slot and connected to the local storage device. The user compute device utilizes the pre-warmed boot volume for launch.

Abstract: Disclosed are various embodiments for scheduling use of heterogeneous frequency schemes for radio-based networks. In one embodiment, a first frequency scheme is selected instead of a second frequency scheme based at least in part on the first frequency scheme being capable of meeting a quality-of-service requirement associated with a wireless device or an application executed in the wireless device. A radio-based network is configured to provide service to the wireless device in a geographic area using the first frequency scheme instead of the second frequency scheme.

Abstract: In a network device, unidirectional port aggregation can be used by aggregating corresponding ports that represent a single underlay next hop. A common layer 2 address (e.g., Media Access Control (MAC) address) can be shared across aggregated destination network devices to allow these network devices to accept traffic forwarded over the unidirectional multi-destination bond port. Port aggregations (e.g., “bonds”, “trunks”, etc.) are controlled by dynamic route updates propagating through a network of devices. Dynamic route updates can be implemented as part of routing protocols. The route updates can be interpreted by the network switches as including a port aggregation signal. Policy may be applied to these route updates to adjust the behavior of the port aggregation mechanism. The resulting port aggregation is installed in the forwarding table of network devices so that the corresponding prefixes resolve to the underlay next hop representing the aggregated port.

Abstract: Techniques for at least the generation of a chatbot built from a custom vocabulary and to use runtime hints during inference are described. In some examples, the generation of the chatbot includes receiving a request to build a chatbot using a bot definition and a custom vocabulary, wherein the chatbot is to use runtime hints during usage; building the chatbot from the bot definition and custom vocabulary by at least: generating automatic speech recognition (ASR) artifacts to be used in decoding audio input into the chatbot into text for at least one other component of the chatbot to use in determining a next act to be performed, the ASR artifacts including artifacts that use the custom vocabulary and artifacts that do not use the custom vocabulary, and storing the ASR artifacts.

Abstract: Technologies directed to interleaved phased array antennas are described. One apparatus includes a support structure, a first phased array antenna, and a second phased array antenna. The first array antenna includes a first set of antenna elements disposed on a surface of the support structure. The first set of antenna elements is located within a perimeter of a first circular area. The second antenna includes a second set of antenna elements. The second set of antenna elements is located within a perimeter of a second circular area. The second circular area partially overlaps the first circular area. The majority of the second set of antenna elements are located outside the perimeter of the first circular area. A majority of the second set of antenna elements are located in the second circular area in the area not overlapped by the first circular area.

Abstract: A compute channel having a compute pipeline of compute stages can be configured using a configuration pipeline with a control table and a datapath table. The control table stores control entries corresponding to respective microoperations, and each control entry includes control information for the compute channel. A datapath table stores datapath configuration entries corresponding to respective microoperations, and each datapath configuration entry has a datapath configuration that includes computational circuit block configurations to configure respective computational circuit blocks in the compute pipeline of the compute channel. Control logic can issue a microoperation to the compute channel by configuring the compute channel according to the control information of the microoperation obtained from the control table, and by inputting the datapath configuration of the microoperation obtained from the datapath table into the configuration pipeline of the compute channel.

Abstract: A sensor head transitions between a retracted and extended state. While retracted, sensors are covered. While extended, the sensors are exposed and may be used to acquire sensor data about the physical space. A force applied by a user, or a received command, may initiate transition. For example, a user may press on the sensor head to initiate retraction or extension. A motor provides a force to move the sensor head and generate haptic feedback, while a position encoder determines a displacement of the sensor head due to an external force being applied. Different applications of force by the user to the sensor head may result in different operations by the device. For example, a short push may retract the sensor head and disable the sensors for a specified time interval. In comparison a long push may retract the sensor head and disable the sensors until a specified clock time.

Abstract: Systems and methods are disclosed for wheel wear monitoring systems for shuttles powered by linear synchronous motors. An example system may include a first rail segment that forms a first side of the track, the first rail segment having a first aperture, a second rail segment that forms a second side of the track, the second rail segment having a second aperture, and a first camera disposed adjacent to the first aperture. The system may include a second camera disposed adjacent to the second aperture, and a controller configured to determine a first set of images of a first wheel of the shuttle using the first camera, determine a second set of images of a second wheel of the shuttle using the second camera, and determine a wear status of the first wheel based at least in part on the first set of images.

Abstract: Techniques for adaptive network connectivity in a cloud provider network are described. A managed networking service obtains metadata associated with an application deployed in the cloud provider network and uses the metadata to construct a graph including application components and network components. Network flows are identified from the metadata and used to construct flow metadata that is linked to paths of the graph. The flow metadata is further enhanced with capability information for the network components on the path. The graph can be efficiently analyzed to identify alternative, superior networking configurations for the application.

Abstract: Anomalous interactions with a website or other system may be detected based on the types of characteristics associated with previous anomalous interactions, independent of the values associated with those characteristics. Historical data is used to determine characteristics of interactions, each characteristic having a type and a value. For historical interactions in which a set of characteristic values are associated with a potentially anomalous interaction, the characteristic types are analyzed in subsequent interactions. If values for those characteristic types occur at a frequency greater than a threshold frequency for a set of subsequent interactions, this may indicate that the interactions are anomalous. Use of the characteristic types for this purpose, rather than historical characteristic values, enables anomalous interactions to be detected independent of the characteristic values associated with the interactions.

Abstract: Methods, systems, and computer-readable media for unified search and navigation for cloud-based services are disclosed. A unified search system receives textual input entered using a search interface. The search interface is displayed in a user interface concurrently with a management console for a cloud provider network. Based (at least in part) on the textual input, the system performs a search using one or more indexes usable to determine service names and descriptive information for the services. The system generates search results comprising a portion of the service names and a portion of the descriptive information. The search results are displayed using a search results overlay that is displayed concurrently with at least a portion of the management console. The system receives additional input entered using the overlay and comprising a selection of a particular search result. Responsive to the selection, additional information associated with the particular search result is displayed.

Abstract: An agent running on an IoT device of a client's network may receive a default password from a provider network and use the received default password to determine whether the password assigned to the IoT device has been changed from the default password to a different one. The agent may retrieve a salt string, a hashing algorithm, and a hashed string from a password database of the IoT device, combine the salt string with the received default password to generate a salted default password, and apply the hashing algorithm to the salted default password to generate a new hashed string. The agent may then compare the new hashed string to the hashed string retrieved from the password database. If they match, then the agent sends an indication to the provider network that the default password is still assigned to the IoT device.

Abstract: Techniques for using establishing a communication session using a third-party (3P) communications service are described. When a request is received to integrate the 3P service with a first-party (1P) service, a username and password associated with the 3P service are sent to it, and a contact list associated with the 3P service is received in return. When a user of a first device sends a request to communicate with a recipient, if the recipient is represented in the 3P contact list, the system sends a request to the second communication system to establish a communication session.

Abstract: A neural text-to-speech system may be configured to emphasize words. Applying emphasis where appropriate enables the TTS system to better reproduce prosodic characteristics of human speech. Emphasis may make the resulting synthesized speech more understandable and engaging than synthesized speech lacking emphasis. Emphasis may be manually annotated to, and/or predicted from, a source text (e.g., a book). In some implementations, the system may use a generative model such as a variational autoencoder to generate word acoustic embeddings indicating how emphasis is to be reflected in the synthesized speech. A phoneme encoder of the TTS system may process phonemes to generate phoneme embeddings. A decoder may process the word acoustic embeddings and the phoneme embeddings to generate spectrogram data representing the synthesized speech.

Abstract: Methods and apparatus for portable network interfaces to manage authentication and license enforcement. A system may include a plurality of resource instances including a producer instance configured to implement a network-accessible service, and an authentication coordinator. The coordinator may assign an interface record to the service, wherein the interface record comprises an IP address and a set of security properties. The coordinator may configure the security properties to allow a client to request an attachment of the interface record to a selected resource instance, such that the selected resource instance is enabled to transmit network messages from the IP address using one or more physical network interfaces of the selected resource instance. The producer resource instance initiates authentication operations for the service, including at least one authentication operation based on the IP address of the interface record.

Abstract: Techniques for configuring a speech processing system with a privacy mode that is associated with the identity of a user that activated the privacy mode are described. A user may speak an indication to have the speech processing system activate a privacy mode. When such an indication is detected by the speech processing system, the speech processing system determines an identity of the user, determines a unique system identifier associated with the user, and generates a privacy mode flag. The speech processing system then associates the privacy mode flag with the user's unique system identifier. The privacy mode flag indicates to components of the speech processing system that any data related to processing of the user's utterances should not be sent to long term storage, thus causing various components of the system to delete data once the respective component is finished processing with respect to an utterance of the user.

Abstract: A system can be configured to provide an advertiser budget control system designed to work within the confines of a privacy preserving content delivery environment intended to reduce or eliminate third-party cookies. This system uses a control system, a PID controller and duty cycle, to control budget delivery to place content within a browser. The control system can be used to stably deliver budget with real-time delivery rate updates while also preventing over-spending of budget.

Abstract: A feature deployment service of a provider network may deploy feature processing units (FPUs) to implement data processing features at both a provider network and edge devices. The use of FPUs may allow a client to use new features at the edge, without delays due to compliance/testing or software upgrades. An FPU includes a model and compute logic that are used to implement a data processing feature. A feature processing service deploys the FPU to an FPU engine at the provider network and also deploys the FPU to edge devices of the client's network that each include an edge FPU engine. The FPU engine at the provider network and the edge FPU engine at each edge device conform to a common specification/API, allowing deployment and use of the same FPU/data processing features at both the cloud and the edge.

Abstract: The present disclosure generally relates to systems and methods for initiating secure network connections at a first computing device without blocking operation of a real-time processor that handles latency-sensitive input/output (I/O) operations. In some implementation examples, the real-time processor obtains a request to establish a secure connection with a second computing device over a network. The real-time processor can enqueue into an inter-processor queue a request for performing a cryptographic operation. An additional processor can obtain the request and perform the cryptographic operation. After completing the cryptographic operation, the additional processor can enqueue information indicating the cryptographic operation is completed into the inter-processor queue. The real-time processor can obtain the information from the inter-processor queue and use the information to establish the secure connection with the second computing device.

Abstract: In networks, some communication links may be provided as part of a network overlay. Technologies are disclosed for monitoring/analyzing targeted networks (e.g., network overlays) using probe packets sent from outside of the targeted networks/overlays. The probe packets are configured to include a stack of headers, including indications of UDP source ports, which are respectively examined in order at network devices in the targeted network to determine a routing scheme to utilize to route the packet.