Abstract: Systems and methods are provided for management of data item recovery operations based on classification of data items with respect to a target recovery time. Data items may be classified using metadata regarding versioning and other data storage operations performed on the data items, and the timing of those storage operations with respect to the target recovery time (TRT). Each class may be associated with one or more recovery actions. The recovery actions may involve modifying the metadata rather than the underlying data items.

Abstract: Disclosed are various embodiments for interfaces for creating radio-based private networks. In one embodiment, a request is received via an interface to create a radio-based private network for a customer. The request indicates a quantity of wireless devices that will connect to the radio-based private network. A quantity of radio units to serve the radio-based private network is determined based at least in part on the quantity of wireless devices. The radio units are preconfigured to implement a radio access network for the radio-based private network. A shipment is initiated to the customer of the radio units that have been preconfigured. Resources in a cloud provider network are provisioned to function as a core network for the radio-based private network.

Abstract: A computer-implemented method includes receiving a neural network model that includes a tensor operation, dividing the tensor operation into a set of sub-operations, and generating instructions for performing a plurality of sub-operations of the set of sub-operations on respective computing engines of a plurality of computing engines on a same integrated circuit device or on different integrated circuit devices. Each sub-operation of the set of sub-operations generates a portion of a final output of the tensor operation. An inference is made based on a result of a sub-operation of the plurality of sub-operations, or based on results of the plurality of sub-operations.

Abstract: Technologies are provided for distributed network management. An access-point computing device is configured to receive commands that target network devices in different computer networks. When a command is received, the access-point device determines which network is targeted by the command and stores the command in a queue associated with that network. Other computing devices are configured to access the multiple computer networks and to execute commands that target devices in the multiple networks. These other computing devices can be configured to transmit requests for commands to the access-point device. When such a request is received, the access-point device determines which network the request is for, retrieves a command from the queue associated with the computer network, and transmits the command to the requestor. The requestor, upon receipt of the command, executes the command against network device(s) in the computer network and transmits any result back to the first computing device.

Abstract: Techniques for providing a standardized voice user interface (VUI) that enables voice to voice natural language understanding (NLU) processing are described. The standardized VUI may be added to speechlets to enable a customer to interact with a business via server(s) using NLU processing. For example, a first user may initiate a first voice interaction using NLU processing with the server(s) and the system may initiate a second voice interaction using NLU processing between the server(s) and a second user. This enables a customer to initiate a transaction (e.g., request information, place an order, make a reservation, etc.) with the business using the speechlet. Thus, the business may use the speechlet to offer services without requiring additional infrastructure or complicated programming to implement.

Abstract: In one example, an apparatus comprises: a direct memory access (DMA) descriptor queue that stores DMA descriptors, each DMA descriptor including an indirect address; an address translation table that stores an address mapping between indirect addresses and physical addresses; and a DMA engine configured to: fetch a DMA descriptor from the DMA descriptor queue to the address translation table to translate a first indirect address of the DMA descriptor to a first physical address based on the address mapping, and perform a DMA operation based on executing the DMA descriptor to transfer data to or from the first physical address.

Abstract: Described is a system and method that determines character sequences from speech, without determining the words of the speech, and processes the character sequences to determine sentiment data indicative of emotional state of a user that output the speech. The emotional state may then be presented or provided as an output to the user.

Abstract: A light detection and ranging (LIDAR) system that provides a large field-of-view (FOV) includes an angle tolerant birefringent electro-optic shutter, an optical system, and one or more image sensors. The electro-optic shutter includes a birefringent material. The optical system is configured to receive optical pulses that are reflected from an environment and that include a first set of angles. The optical system is configured to compress the first set of angles into a second set of angles below a threshold angle associated with the birefringent material. The electro-optic shutter is configured to receive the optical signals with the second set of angles. The image sensor(s) are configured to generate an image of the environment based on the optical pulses with the second set of angles that pass through the electro-optic shutter.

Abstract: An integrated circuit device includes a packet type detection circuit, a security circuitry, and a configuration circuit. The packet type detection circuit is operable to determine a packet type of a packet based on header portions of the packet. The security circuit is operable to perform security processing of the packet according to a set of security parameters. The configuration circuit operable to determine the set of security parameters based on the packet type of the packet, an identifier associated with the packet, and an index associated with the packet, and provide the set of security parameters to the security circuit.

Abstract: A system includes an obsolete cache-line vector having a plurality of memory elements, wherein each memory element has a one-to-one correspondence to a cache line entry of a cache memory. The vector can capture cache line errors that occur at different times from an error detection logic associated with the cache memory. A counter can be coupled to the obsolete cache-line vector for tracking how many of the memory elements in the vector are activated. When a predetermined threshold is reached, a threshold comparator can release a trigger for further analysis. An error events logger can be used to track all of the errors that occurred. The error events logger can also use a time stamp, which can assist the RAS system in analyzing a correlation between the errors, such as patterns that occur and time differences between the errors.

Abstract: Techniques for identifying synchronization errors between audio and video are described herein. Audio portions in audio for media content may be identified based at least in part on a sound level associated with first respective segments of the audio portions. A subset of the audio portions may be selected based at least in part on a duration associated with the audio portions. For a segment of the subset a first number of frames in the audio and a second number of frames in the video for the segment may be determined. A determination may be made that the segment includes a conversation segment based at least in part on the first number of frames, the second number of frames, and a first threshold. A synchronization error may be identified in the conversation segment based on a difference between the audio and the video of the conversation segment.

Abstract: Some implementations include methods for replacing advertisements that have been inserted into a manifest associated with live streaming and may include receiving a request for a manifest from a player to enable a user to watch a live stream of an event. The request may be received at a first time when the live stream is already in progress. The manifest may be generated to include content fragments associated with the live event and advertisements based on first set of selection criteria. The manifest may be sent to the player to enable the user to watch the live stream. A seek back request may be received from the player to enable the user to watch the live stream at a second time earlier than the first time. The manifest may be updated to replace at least one advertisement with a replacement advertisement selected based on second set of selection criteria.

Abstract: A peripheral device may implement storage virtualization for non-volatile storage devices connected to the peripheral device. A host system connected to the peripheral device may host one or multiple virtual machines. The peripheral device may implement different virtual interfaces for the virtual machines or the host system that present a storage partition at a non-volatile storage device to the virtual machine or host system for storage. Access requests from the virtual machines or host system are directed to the respective virtual interface at the peripheral device. The peripheral device may perform data encryption or decryption, or may perform throttling of access requests. The peripheral device may generate and send physical access requests to perform the access requests received via the virtual interfaces to the non-volatile storage devices. Completion of the access requests may be indicated to the virtual machines via the virtual interfaces.

Abstract: Custom policies are definable for use in a system that enforces policies. A user, for example, may author a policy using a policy language and transmit the system through an application programming interface call. The custom policies may specify conditions for computing environment attestations that are provided with requests to the system. When a custom policy applies to a request, the system may determine whether information in the attestation is sufficient for the request to be fulfilled.

Abstract: A method to synchronize tags between two databases comprises receiving a first command to add a tag to a resource in a first database, the tag comprising a key value pair that defines an access privilege associated with the resource. A determination is made that the tag satisfies validation criteria associated with a second database. The tag is stored in the first database, and an entry for the tag is added to a synchronization table, wherein the entry lacks a synchronized flag. A synchronization process is performed between the first database and the second database. A determination is made that the entry of the synchronization table lacks the synchronized flag. A copy of the tag is then written to the second database, and the synchronized flag for the entry in the synchronization table is set.

Abstract: Queries that reference materialized views may be rewritten to compensate for stale materialized views. A query may be received that references a materialized view. A determination may be made as to whether the materialized view is stale. For a stale materialized view, the query may be rewritten to generate a query plan that obtains changes made to base tables for the materialized view not included in the stale materialized view and considers the change(s) when generating a result for the query from the materialized view. The rewritten query may then be performed to provide a result as if the materialized view were up-to-date.

Abstract: A reliability map is generated by superimposing or associating populations or other intrinsic data is superimposed or associated with a geographic map of a region, which is divided into a grid having cells of uniform size. Densities of towns, cities or other geospatial areas are determined and assigned to cells of the grid, which have sizes corresponding to minimum dimensions of a corridor required for travel by an aerial vehicle. When a mission requiring travel from an origin to a destination within the region is identified, one or more paths of a safe route between the origin and the destination are selected based on the reliability map. The safe route is selected to avoid areas of high population density or locations of critical infrastructure such as schools, hospitals or public safety buildings.

Abstract: An image is processed to determine semantic data about what is depicted in that image. The semantic data provides information about location in the image and semantic category of an object depicted within the image. The semantic categories may include “background”, “face”, “text”, “clothing”, “exercise”, and so forth. The semantic data may then be used to facilitate distribution of image data while limiting the information shared. For example, the semantic data may indicate the placement and position of a user exercising in first video data. Using the semantic data, second video data may be produced that obscures or replaces parts of the image that do not depict the user exercising. The second video data may then be used for providing feedback to the user, while preventing disclosure of other people, background, and so forth that are depicted in the first video data.

Abstract: A primary query engine may receive a query and determine whether the query is eligible for performance at a secondary query engine. If eligible, the primary query engine may evaluate the availability of the first query engine to perform the query. The first query engine may determine whether to assign the query to the primary query engine or to the secondary query according to availability evaluation. For queries assigned to the secondary query engine, the primary query engine may send a request to the secondary query engine to being processing of the query.

Abstract: Systems and methods for acoustic event detection model selection are disclosed. For example, models may be calibrated utilizing audio samples from sound output by specific audio-output devices. Thereafter, a determination may be made as to which audio-input devices are near a give audio-output device and a model selector may select a model trained to detect an acoustic event produced by the audio-output device. The proximate audio-input device(s) may be configured with the selected model to detect the acoustic event.

Abstract: Embodiments presented herein provide techniques for evaluating an asynchronous application using a test framework. The test framework may perform a load test of an asynchronous application or service composed from a collection of applications or services. To do so, the test framework may submit transactions to a distributed application at a specified transaction rate and monitor how the distributed application operates at that transaction rate. An aggregate load test component may evaluate the remaining work pending at work accumulation points of the distributed application to determine whether the distributed application can sustain the specified transaction rate. A transaction tracking component may initiate transactions to generate load at the specified transaction rate without blocking while the transactions are processed by the distributed application.

Abstract: A platform for data analytics may be provided in a hosted environment on a multi-tenant system. The platform provider may also provide transactional processing services. Data obtained from processing the transactional services may be stored in an n-dimensional cube with which analytics may be performed. A dimension and hierarchy model may be identified based on correlations between hierarchy dimensions and levels in a dataset, or in schema and queries related to the dataset. Correlations may be further based on data received from a data stream. Priority for calculating a hierarchy may be based on data received from a data stream.

Abstract: A comparative rejection sampling technique selects a bound set of possible execution run results for a process to be simulated, such as a quantum circuit, for each possible execution run result a modeled probability of a state associated with the possible execution run result is determined. For example a tensor network algorithm may be used to determine quantum state probabilities for each quantum state execution result included in the bound set. Based on the determined probabilities one of the possible execution run results is selected from the set of possible execution run results as an accepted simulated execution run result for a run of the process being simulated.

Abstract: Systems and techniques for detecting events involving a user that occurred during a session in a facility, and performing a holistic, session-based analysis of the events to determine items taken by the user from the facility. An inventory management system may initially analyze the events to determine a hypothesis for a result of each respective event and a probability that the hypotheses are accurate. An initial listing of the items determined to be taken by the user may be generated along with probabilities that the items were taken. Upon determining that a probability an item was taken is lower than a threshold, the management system may select an algorithm to process an event in the session that is likely to resolve uncertainty in the initial listing. The management system may iteratively process events until a final listing represents the items taken by the user with an allowable probability.

Abstract: A plurality of resource requesters may be configured to consume a resource to perform a task. Each of the plurality of resource requesters can be allocated a resource budget to consume the resource to perform the task. An arbiter can select one of the plurality of resource requesters to consume the resource based on an arbitration scheme. When a resource requester is selected, the amount of resource consumed by the resource requester can be deducted from its resource budget. When the resource requester is idle for a number of cycles when selected, the corresponding resource budget can be further reduced to account for the actual amount of resource consumed and wasted by the resource requester, which can provide fairness in resource consumption over few rounds of arbitration.

Abstract: Systems and techniques are generally described for semantically segmenting videos. In various examples, a selection of a first video may be received. A first query to segment the first video into segments related to a first category of content may be received. A first plurality of segments related to the first category may be determined. In some examples, time code data representing the first plurality of segments may be sent to a remote computing device, wherein a video player of the remote computing device is effective to play the first plurality of segments based at least in part on the time code data.

Abstract: Techniques for managing connections in a mesh network are described. In an example, a device sends, to a plurality of devices of the mesh network, one or more messages requesting an action to be performed by a first device of the mesh network. The device determines, based at least in part on data about the mesh network, that the first device is to be reached via a second device of the mesh network. The second device being a single hop away from the device. The device establishes a peer-to-peer connection with the second device and receives, over the peer-to-peer connection, a response of the first device to the message.

Abstract: A computer system includes symmetrical sets of motherboard serial channels which couple processor devices on a motherboard with a common serial link interface. The common serial link interface can be coupled with an endpoint device to establish symmetrical serial links between the endpoint device and the processor devices. The computer system can include a riser card which can be coupled with the serial link interface. The riser card can include an endpoint device interface and serial channels which can couple the processor devices with the endpoint device via symmetrical limited selections of the motherboard serial channels. The riser can include additional interfaces which can couple the processor devices with additional expansion devices.

Abstract: Systems, methods, and computer-readable media are disclosed for systems and methods for language agnostic automated voice activity detection. Example methods may include determining an audio file associated with video content, generating audio segments using the audio file, the audio segments including a first segment and a second segment, and determining that the first segment includes first voice activity. Methods may include determining that the second segment comprises second voice activity, determining that voice activity is present between a first timestamp associated with the first segment and a second timestamp associated with the second segment, and generating text data representing the voice activity that is present between the first timestamp and the second timestamp.

Abstract: Systems and methods for state prediction of devices are disclosed. A group of reference devices may be identified and a subset of the reference devices may be identified and/or determined based at least in part on a degree of similarity between reference usage-patterns associated with the reference devices and a usage pattern of a target device. The current state of the subset of the reference devices may be determined and may be utilized to determine a probability that the target device should be in a given state. The state prediction information may be utilized for one or more actions, such as sending recommendations, target inference operations, and/or device configuration, for example.

Abstract: Systems and methods are described for management of a coordinated environment for execution of on-demand code with reduced memory footprint provided. A coordinator receives individual on-demand code execution requests or tasks from coordinated devices. The coordinate can process the on-demand code execution requests to associate at least a subset of the on-demand code execution with one or more groups sharing executable code. The coordinated device can implement the execution of the individual tasks without requiring a separate loading and execution of the on-demand executable code. Accordingly, the coordinated device may be implemented on computing devices having more limited computing resources by reducing the memory footprint required to execute the on-demand task.

Abstract: Provided are systems and methods for operating a neural network processor, wherein the processor includes an input selector circuit that can be configured to select the data that will be input into the processor's computational array. In various implementations, the selector circuit can determine, for a row of the array, whether the row input will be the output from a buffer memory or data that the input selector circuit has selected for a different row. The row can receive an input feature map from a set of input data or an input feature map that was selected for inputting into a different row, such that the input feature map is input into more than one row at a time. The selector circuit can also include a delay circuit, so that the duplicated input feature map can be input into the computational array later than the original input feature map.

Abstract: This disclosure describes systems and techniques for identifying events that occur within an environment using image data captured at the environment. For example, one or more cameras may generate image data representative of a user interacting with an item on the shelf. This image data may be used to generate feature data associated with the user and the item, which may be analyzed by one or more classifiers for identifying an interaction between the user and the item. The systems and techniques may then generate interaction data, which in turn may be analyzed by one or more additional classifiers for identifying an event, such as the user picking a particular item from the shelf within the environment. Event data indicative of the event may then be used to update a virtual cart of the user.

Abstract: Techniques for host resource group sharing in a provider network are described. A resource share is made of a host resource group made up of dedicated hosts in the provider network. The share provides access to the host resource group of a primary account with one or more other principals—e.g., user accounts, an organization, or a group of users. The other principals can launch compute instances into the host resource group, which may cause the automatic provisioning of new hosts into the host resource group, of the primary account, as needed.

Abstract: Techniques for processing voice commands from a locked device are described. A voice command received by a locked device is stored, a prompt requesting that the device be unlocked is generated, and the voice command is processed automatically after the device is unlocked. Thus, the system processes the voice command without the user repeating the voice command. In addition, the system may process certain voice commands even when the device is locked. For example, a whitelist filter compares an intent associated with the voice command to whitelisted intents from a whitelist database before the intent is dispatched to a speechlet, and intents included in the whitelist database are processed normally. Thus, the system performs certain voice commands while the device is locked, while other voice commands may be automatically processed after the device is unlocked without the user repeating the voice command.

Abstract: Techniques for query execution against relational databases using connection pooling are described. According to some embodiments, a query processing service is disclosed that enables users to execute queries against target relational databases implemented by a relational database service. The service receives query requests originated by a client application at a web service endpoint and identifies a connection to a particular target database. In some examples, the query request is a Hyper Text Transfer Protocol (HTTP) message comprising a query to be executed by a target database instance within the provider network. The service transmits the query for execution at the target database via the connection and obtains a query result based on the execution of the query. The service transforms the query result into a format suitable for the client and transmits a query response to the client.

Abstract: Methods and apparatus are disclosed for programming reconfigurable logic devices such as FPGAs in a networked server environment. In one example, a system hosting a network service providing field programmable gate array (FPGA) services includes a network service provider configured to receive a request to implement application logic in a plurality of FPGAs, allocate a computing instance comprising the FPGAs in responses to receiving the request, produce configuration information for programming the FPGAs, and send the configuration information to an allocated computing instance. The system further includes a computing host that is allocated by the network service provider as a computing instance which includes memory, processors configured to execute computer-executable instructions stored in the memory, and the programmed FPGAs.

Abstract: Systems and methods are described for modifying input and output (I/O) to an object storage service by implementing one or more owner-specified functions to I/O requests. A function can implement a data manipulation, such as filtering out sensitive data before reading or writing the data. The functions can be applied prior to implementing a request method (e.g., GET or PUT) specified within the I/O request, such that the data to which the method is applied may not match the object specified within the request. For example, a user may request to obtain (e.g., GET) a data set. The data set may be passed to a function that filters sensitive data to the data set, and the GET request method may then be applied to the output of the function. In this manner, owners of objects on an object storage service are provided with greater control of objects stored or retrieved from the service.

Abstract: Strategies for an objective associated with an offering set are obtained. A strategy assigns respective selection probabilities of receiving content associated with the offering set to users of a user population. Strategy optimization iterations are performed with respect to a sub-sample of the population and a subset of the strategies. In a given iteration, weights assigned to the strategies are used to determine aggregated selection probabilities for users, content pertaining to the offering set is presented to users selected based on the aggregated probabilities, and the weights are adjusted based on feedback metrics and an exploration-exploitation tradeoff parameter. Based on weights updated in the iterations, content associated with the offering set is presented to users which were not in the sub-sample.

Abstract: Systems and methods to analyze contacts data. Contacts data may be encoded as text (e.g., chat logs), audio (e.g., audio recordings), and various other modalities. A computing resource service provider may implement a service to obtain audio data from a client, transcribe the audio data, thereby generating text, execute one or more natural language processing techniques to generate metadata associated with the text, processing at least the metadata to generate an output, determine whether the output matches one or more categories, and provide the output to the client. Techniques described herein may be performed as an asynchronous workflow.

Abstract: Data about concentration of one or more types of molecules present within a human body are determined noninvasively using radio frequency signals. These signals generated at very low power levels are emitted and acquired using an antenna mounted to a wearable device. Information about changes to the signals is indicative of the concentration of one or more types of molecules within the user. The antenna includes two or more elements with a varying distance between them which reduces or eliminates power reflection and improves overall efficiency. The varying distance provides a first impedance at terminals of the antenna and a second impedance elsewhere on the antenna, such as midway along a long axis of the antenna. The first impedance matches an impedance of a transmitter output, a receiver input, or both. The second impedance results in the signal extending away from the antenna towards the user.

Abstract: An audio controlled assistant captures environmental noise and converts the environmental noise into audio signals. The audio signals are provided to a system which analyzes the audio signals for a plurality of audio prompts, which have been customized for the acoustic environment surrounding the audio controlled assistant by an acoustic modeling system. The system configured to detect the presence of an audio prompt in the audio signals and transmit instructions associated with the detected audio prompt to at least one of the audio controlled assistant or one or more cloud based services, in response.

Abstract: Various embodiments of a hierarchical system or method of identifying sensitive content in data is described. In some embodiments, sensitive data classifiers local to a data storage system can analyze a plurality of data items and classify at least some data items as potentially containing sensitive data. The sensitive data classifiers can provide the classified data items to a separate sensitive data discovery component. The sensitive data discovery component can, in some embodiments, obtain the classified data items, perform a sensitive data location analysis on the classified data items to identify a location of sensitive data within some of the classified data items, and generate location information for the sensitive data within the data items containing sensitive data. The sensitive data discovery component can provide to a destination this information, in some embodiments, where the destination might redact, tokenize, highlight, or perform other actions on the located sensitive data.

Abstract: A publish-subscribe messaging method may include identifying a definition of a transformation rule for transforming a message received from a publisher. The message may be received from the publisher at a broker. The message may identify a topic and may include message data. A determination may be made as to whether the message is associated with a transformation rule for transforming the message. The method may further include transforming the message as defined by the transformation rule and sending the transformed message to a destination.

Abstract: A write cleaner circuit can be used to implement write-through (WT) functionality by a write-back (WB) cache memory for updating the system memory. The write cleaner circuit can intercept memory write transactions issued to the WB cache memory and generate clean requests that can enable the WB cache memory to send update requests to corresponding memory locations in the system memory around the same time as the memory write transactions are performed by the WB cache memory, and clear dirty bits in the cache lines corresponding to those memory write transactions.

Abstract: A system and method establishes a communication connection between a first device of a first user and a second device of a second user. Request data corresponding to a request to establish a communication connection with a second user is received, and a user profile associated with the second user is determined. One or more sensors of the second device receive input data corresponding to the environment of the second device, and an identity of the second user is determined based thereon. The communication connection is established and, based on the identity, the second device tracks movement of the second user in the environment.

Abstract: Described herein is a system for recalibrating an audio configuration for mobile or moving devices. The system may configure a multi-device output group to generate synchronous output audio using multiple devices. For example, the output group may include a first device generating a first portion of output audio corresponding to a first channel and a second device generating a second portion of the output audio corresponding to a second channel. If the second device detects motion and/or movement indicating a change in its location, the system may recalibrate the output group to continue generating the output audio without the second device. For example, the first device or a new device can generate the second portion of the output audio instead of the second device. When the second device returns, the system can recalibrate the output group to include the second device again.

Abstract: Disclosed are system architectures and techniques for multiple access points for a data container. Control plane and data plane APIs are disclosed for generating access points and associating the access points with data containers, as well as for generating access point policies that specify permissions for the access points. More than one access point may be associated with a single data container. A storage service receives requests directed to the access points, and grants or denies the requests based on the permissions specified in the corresponding policies. Various types of use cases for using access policies are contemplated such as default, regional, or network-based (e.g., VPC-based) use-cases or the like. A system may implement layers of policies such as identity and access management policies, access point policies and data container policies.