In some implementations, the search system 115 may receive user interactions (e.g., various search requests) with the search system 115 over time, and may relink one or more group level metadata terms and aliases in the one or more of the group level metadata graphs based on the user interactions and/or may relink one or more user level metadata terms and aliases in the one or more of the user level metadata graphs based on the user interactions.

As shown in FIG. 1G, and by reference number 160, the search system may perform one or more actions based on the search results. In some implementations, when performing the one or more actions, the search system 115 may provide the search results for display to the user. For example, the search system 115 may provide the search results to the user device 110 associated with the user, and the user device 110 may display the search results to the user. As described above, the search results may be tailored to the user based on attributes of the user. In this way, the search system 115 may conserve computing resources, networking resources, and/or other resources that would have otherwise been consumed by providing incorrect search results and/or recommendations based on not understanding user search terms.

In some implementations, when performing the one or more actions, the search system 115 may modify one or more of the global metadata graphs, the group level metadata graphs, or the user level metadata graphs based on the search results. For example, as described above, the search system 115 may modify one or more of the global metadata graphs, the group level metadata graphs, or the user level metadata graphs, based on the search results, by adding terms and aliases (e.g., nodes) to the global metadata graphs, the group level metadata graphs, and/or the user level metadata graphs, removing terms and aliases (e.g., nodes) from the global metadata graphs, the group level metadata graphs, and/or the user level metadata graphs, relinking terms and aliases (e.g., nodes) of the global metadata graphs, the group level metadata graphs, and/or the user level metadata graphs, and/or the like. In this way, the search system 115 may conserve computing resources, networking resources, and/or other resources that would have otherwise been consumed by providing a poor user experience due to the incorrect search results and/or recommendations.

In some implementations, when performing the one or more actions, the search system 115 may utilize the search results with a video streaming service or a music streaming service. For example, if the search results are associated with a video streaming service or a music streaming service, the search system 115 may utilize the search results to instruct the video streaming service or the music streaming service to provide details associated with search results (e.g., videos or music identified in the search results). The search system 115 may provide the details associated with search results for display to the user via the user device 110. In this way, the search system 115 may conserve computing resources, networking resources, and/or other resources that would have otherwise been consumed by performing searches based on misinterpreted user search terms.

In some implementations, when performing the one or more actions, the search system 115 may utilize the search results with an online store or a personal assistant application. For example, if the search results are associated with an online store or a personal assistant, the search system 115 may provide the search results to the online store or the personal assistant. The online store may utilize the search results to recommend products or services to the user and the personal assistant may utilize the search results to further interact with the user. In this way, the search system 115 may conserve computing resources, networking resources, and/or other resources that would have otherwise been consumed by providing incorrect search results and/or recommendations based on not understanding user search terms, providing a poor user experience due to the incorrect search results and/or recommendations, performing searches based on misinterpreted user search terms, and/or the like.

In some implementations, when performing the one or more actions, the search system 115 may retrain one or more of the trained NLU models based on the search results. For example, the search system 115 may utilize the search results as additional training data for retraining the trained NLU models, thereby increasing the quantity of training data available for training the trained NLU models. Accordingly, the search system 115 may conserve computing resources associated with identifying, obtaining, and/or generating historical data for training the trained NLU models relative to other systems for identifying, obtaining, and/or generating historical data for training machine learning models.

In this way, the search system 115 generates and utilizes a personalized vocabulary for search and recommendations. For example, the search system 115 may learn and utilize a personalized vocabulary for users to interact with when seeking search results and/or recommendations. In addition to learning a personalized vocabulary for each user, the search system 115 may switch between different levels of vocabulary based on context, current depth of a search, availability of data about the user, and/or the like. The search system 115 may receive an initial set of terms for various entity types that are used in user searches, and may utilize the set of terms to generate a graph with interconnecting terms and term relationships. Based on user interactions, the search system 115 may prune the original graph or may extend the original graph in specific areas with vocabulary that is used or related to user interest areas. Thus, the search system 115 may conserve computing resources, networking resources, and/or other resources that would have otherwise been consumed by providing incorrect search results and/or recommendations based on not understanding user search terms, providing a poor user experience due to the incorrect search results and/or recommendations, performing searches based on misinterpreted user search terms, and/or the like.

As indicated above, FIGS. 1A-1G are provided as an example. Other examples may differ from what is described with regard to FIGS. 1A-1G. The number and arrangement of devices shown in FIGS. 1A-1G are provided as an example. In practice, there may be additional devices, fewer devices, different devices, or differently arranged devices than those shown in FIGS. 1A-1G. Furthermore, two or more devices shown in FIGS. 1A-1G may be implemented within a single device, or a single device shown in FIGS. 1A-1G may be implemented as multiple, distributed devices. Additionally, or alternatively, a set of devices (e.g., one or more devices) shown in FIGS. 1A-1G may perform one or more functions described as being performed by another set of devices shown in FIGS. 1A-1G.

FIG. 2 is a diagram illustrating an example 200 of training and using a machine learning model in connection with systems and methods for improving search results. The machine learning model training and usage described herein may be performed using a machine learning system. The machine learning system may include or may be included in a computing device, a server, a cloud computing environment, or the like, such as the search system 115 described in more detail elsewhere herein.

As shown by reference number 205, a machine learning model may be trained using a set of observations. The set of observations may be obtained from training data (e.g., historical data), such as data gathered during one or more processes described herein. In some implementations, the machine learning system may receive the set of observations (e.g., as input), as described elsewhere herein.

As shown by reference number 210, the set of observations may include a feature set. The feature set may include a set of variables, and a variable may be referred to as a feature. A specific observation may include a set of variable values (or feature values) corresponding to the set of variables. In some implementations, the machine learning system may determine variables for a set of observations and/or variable values for a specific observation based on the input. For example, the machine learning system may identify a feature set (e.g., one or more features and/or feature values) by extracting the feature set from structured data, by performing natural language processing to extract the feature set from unstructured data, and/or by receiving input from an operator.

As an example, a feature set for a set of observations may include a first feature of global metadata graphs, a second feature of group level metadata graphs, a third feature of user level metadata graphs, and so on. As shown, for a first observation, the first feature may have a value of global metadata graph 1, the second feature may have a value of group level metadata graph 1, the third feature may have a value of user level metadata graph 1, and so on. These features and feature values are provided as examples, and may differ in other examples.

As shown by reference number 215, the set of observations may be associated with a target variable. The target variable may represent a variable having a numeric value, may represent a variable having a numeric value that falls within a range of values or has some discrete possible values, may represent a variable that is selectable from one of multiple options (e.g., one of multiples classes, classifications, or labels) and/or may represent a variable having a Boolean value. A target variable may be associated with a target variable value, and a target variable value may be specific to an observation. In example 200, the target variable is an NLU model output, which has a value of NLU model output 1 for the first observation. The feature set and target variable described above are provided as examples, and other examples may differ from what is described above.

The target variable may represent a value that a machine learning model is being trained to predict, and the feature set may represent the variables that are input to a trained machine learning model to predict a value for the target variable. The set of observations may include target variable values so that the machine learning model can be trained to recognize patterns in the feature set that lead to a target variable value. A machine learning model that is trained to predict a target variable value may be referred to as a supervised learning model.

In some implementations, the machine learning model may be trained on a set of observations that do not include a target variable. This may be referred to as an unsupervised learning model. In this case, the machine learning model may learn patterns from the set of observations without labeling or supervision, and may provide output that indicates such patterns, such as by using clustering and/or association to identify related groups of items within the set of observations.

As shown by reference number 220, the machine learning system may train a machine learning model using the set of observations and using one or more machine learning algorithms, such as a regression algorithm, a decision tree algorithm, a neural network algorithm, a k-nearest neighbor algorithm, a support vector machine algorithm, or the like. After training, the machine learning system may store the machine learning model as a trained machine learning model 225 to be used to analyze new observations.

As shown by reference number 230, the machine learning system may apply the trained machine learning model 225 to a new observation, such as by receiving a new observation and inputting the new observation to the trained machine learning model 225. As shown, the new observation may include a first feature of global metadata graph X, a second feature of group level metadata graph Y, a third feature of user level metadata graph Z, and so on, as an example. The machine learning system may apply the trained machine learning model 225 to the new observation to generate an output (e.g., a result). The type of output may depend on the type of machine learning model and/or the type of machine learning task being performed. For example, the output may include a predicted value of a target variable, such as when supervised learning is employed. Additionally, or alternatively, the output may include information that identifies a cluster to which the new observation belongs and/or information that indicates a degree of similarity between the new observation and one or more other observations, such as when unsupervised learning is employed.

As an example, the trained machine learning model 225 may predict a value of NLU model output A for the target variable of the NLU model output for the new observation, as shown by reference number 235. Based on this prediction, the machine learning system may provide a first recommendation, may provide output for determination of a first recommendation, may perform a first automated action, and/or may cause a first automated action to be performed (e.g., by instructing another device to perform the automated action), among other examples.

In some implementations, the trained machine learning model 225 may classify (e.g., cluster) the new observation in a cluster, as shown by reference number 240. The observations within a cluster may have a threshold degree of similarity. As an example, if the machine learning system classifies the new observation in a first cluster (e.g., a global metadata graphs cluster), then the machine learning system may provide a first recommendation. Additionally, or alternatively, the machine learning system may perform a first automated action and/or may cause a first automated action to be performed (e.g., by instructing another device to perform the automated action) based on classifying the new observation in the first cluster.

As another example, if the machine learning system were to classify the new observation in a second cluster (e.g., a group level metadata graphs cluster), then the machine learning system may provide a second (e.g., different) recommendation and/or may perform or cause performance of a second (e.g., different) automated action.

In some implementations, the recommendation and/or the automated action associated with the new observation may be based on a target variable value having a particular label (e.g., classification or categorization), may be based on whether a target variable value satisfies one or more threshold (e.g., whether the target variable value is greater than a threshold, is less than a threshold, is equal to a threshold, falls within a range of threshold values, or the like), and/or may be based on a cluster in which the new observation is classified. The recommendations, actions, and clusters described above are provided as examples, and other examples may differ from what is described above.

In some implementations, the trained machine learning model 225 may be re-trained using feedback information. For example, feedback may be provided to the machine learning model. The feedback may be associated with actions performed based on the recommendations provided by the trained machine learning model 225 and/or automated actions performed, or caused, by the trained machine learning model 225. In other words, the recommendations and/or actions output by the trained machine learning model 225 may be used as inputs to re-train the machine learning model (e.g., a feedback loop may be used to train and/or update the machine learning model).

In this way, the machine learning system may apply a rigorous and automated process to improve search results. The machine learning system may enable recognition and/or identification of tens, hundreds, thousands, or millions of features and/or feature values for tens, hundreds, thousands, or millions of observations, thereby increasing accuracy and consistency and reducing delay associated with improving search results relative to requiring computing resources to be allocated for tens, hundreds, or thousands of operators to manually improve search results using the features or feature values.

As indicated above, FIG. 2 is provided is an example. Other examples may differ from what is described in connection with FIG. 2.

FIG. 3 is a diagram of an example environment 300 in which systems and/or methods described herein may be implemented. As shown in FIG. 3, the environment 300 may include the search system 115, which may include one or more elements of and/or may execute within a cloud computing system 302. The cloud computing system 302 may include one or more elements 303-313, as described in more detail below. As further shown in FIG. 3, the environment 300 may include the data structure 105, the user device 110, and/or a network 320. Devices and/or elements of the environment 300 may interconnect via wired connections and/or wireless connections.

The data structure 105 may include one or more devices capable of receiving, generating, storing, processing, and/or providing information, as described elsewhere herein. The data structure 105 may include a communication device and/or a computing device. For example, the data structure 105 may include a database, a server, a database server, an application server, a client server, a web server, a host server, a proxy server, a virtual server (e.g., executing on computing hardware), a server in a cloud computing system, a device that includes computing hardware used in a cloud computing environment, or a similar type of device. The data structure 105 may communicate with one or more other devices of the environment 300, as described elsewhere herein.

The user device 110 may include one or more devices capable of receiving, generating, storing, processing, and/or providing information, as described elsewhere herein. The user device 110 may include a communication device and/or a computing device. For example, the user device 110 may include a wireless communication device, a mobile phone, a user equipment, a laptop computer, a tablet computer, a desktop computer, a gaming console, a set-top box, a wearable communication device (e.g., a smart wristwatch, a pair of smart eyeglasses, a head mounted display, or a virtual reality headset), or a similar type of device.

The cloud computing system 302 includes computing hardware 303, a resource management component 304, a host operating system (OS) 305, and/or one or more virtual computing systems 306. The cloud computing system 302 may execute on, for example, an Amazon Web Services platform, a Microsoft Azure platform, or a Snowflake platform. The resource management component 304 may perform virtualization (e.g., abstraction) of the computing hardware 303 to create the one or more virtual computing systems 306. Using virtualization, the resource management component 304 enables a single computing device (e.g., a computer or a server) to operate like multiple computing devices, such as by creating multiple isolated virtual computing systems 306 from the computing hardware 303 of the single computing device. In this way, the computing hardware 303 can operate more efficiently, with lower power consumption, higher reliability, higher availability, higher utilization, greater flexibility, and lower cost than using separate computing devices.

The computing hardware 303 includes hardware and corresponding resources from one or more computing devices. For example, the computing hardware 303 may include hardware from a single computing device (e.g., a single server) or from multiple computing devices (e.g., multiple servers), such as multiple computing devices in one or more data centers. As shown, the computing hardware 303 may include one or more processors 307, one or more memories 308, one or more storage components 309, and/or one or more networking components 310. Examples of a processor, a memory, a storage component, and a networking component (e.g., a communication component) are described elsewhere herein.

The resource management component 304 includes a virtualization application (e.g., executing on hardware, such as the computing hardware 303) capable of virtualizing computing hardware 303 to start, stop, and/or manage one or more virtual computing systems 306. For example, the resource management component 304 may include a hypervisor (e.g., a bare-metal or Type 1 hypervisor, a hosted or Type 2 hypervisor, or another type of hypervisor) or a virtual machine monitor, such as when the virtual computing systems 306 are virtual machines 311. Additionally, or alternatively, the resource management component 304 may include a container manager, such as when the virtual computing systems 306 are containers 312. In some implementations, the resource management component 304 executes within and/or in coordination with a host operating system 305.

A virtual computing system 306 includes a virtual environment that enables cloud-based execution of operations and/or processes described herein using the computing hardware 303. As shown, the virtual computing system 306 may include a virtual machine 311, a container 312, or a hybrid environment 313 that includes a virtual machine and a container, among other examples. The virtual computing system 306 may execute one or more applications using a file system that includes binary files, software libraries, and/or other resources required to execute applications on a guest operating system (e.g., within the virtual computing system 306) or the host operating system 305.

Although the search system 115 may include one or more elements 303-313 of the cloud computing system 302, may execute within the cloud computing system 302, and/or may be hosted within the cloud computing system 302, in some implementations, the search system 115 may not be cloud-based (e.g., may be implemented outside of a cloud computing system) or may be partially cloud-based. For example, the search system 115 may include one or more devices that are not part of the cloud computing system 302, such as the device 400 of FIG. 4, which may include a standalone server or another type of computing device. The search system 115 may perform one or more operations and/or processes described in more detail elsewhere herein.

The network 320 may include one or more wired and/or wireless networks. For example, the network 320 may include a cellular network (e.g., a 5G network, a 4G network, an LTE network, a third generation (3G) network, a code division multiple access (CDMA) network, etc.), a public land mobile network (PLMN), a local area network (LAN), a wide area network (WAN), a metropolitan area network (MAN), a telephone network (e.g., the Public Switched Telephone Network (PSTN)), a private network, an ad hoc network, an intranet, the Internet, a fiber optic-based network, and/or a combination of these or other types of networks. The network 320 enables communication among the devices of environment 300.

The number and arrangement of devices and networks shown in FIG. 3 are provided as an example. In practice, there may be additional devices and/or networks, fewer devices and/or networks, different devices and/or networks, or differently arranged devices and/or networks than those shown in FIG. 3. Furthermore, two or more devices shown in FIG. 3 may be implemented within a single device, or a single device shown in FIG. 3 may be implemented as multiple, distributed devices. Additionally, or alternatively, a set of devices (e.g., one or more devices) of the environment 300 may perform one or more functions described as being performed by another set of devices of the environment 300.

FIG. 4 is a diagram of example components of a device 400, which may correspond to the data structure 105, the user device 110, and/or the search system 115. In some implementations, the data structure 105, the user device 110, and/or the search system 115 may include one or more devices 400 and/or one or more components of the device 400. As shown in FIG. 4, the device 400 may include a bus 410, a processor 420, a memory 430, an input component 440, an output component 450, and a communication component 460.

The bus 410 includes one or more components that enable wired and/or wireless communication among the components of the device 400. The bus 410 may couple together two or more components of FIG. 4, such as via operative coupling, communicative coupling, electronic coupling, and/or electric coupling. The processor 420 includes a central processing unit, a graphics processing unit, a microprocessor, a controller, a microcontroller, a digital signal processor, a field-programmable gate array, an application-specific integrated circuit, and/or another type of processing component. The processor 420 is implemented in hardware, firmware, or a combination of hardware and software. In some implementations, the processor 420 includes one or more processors capable of being programmed to perform one or more operations or processes described elsewhere herein.

The memory 430 includes volatile and/or nonvolatile memory. For example, the memory 430 may include random access memory (RAM), read only memory (ROM), a hard disk drive, and/or another type of memory (e.g., a flash memory, a magnetic memory, and/or an optical memory). The memory 430 may include internal memory (e.g., RAM, ROM, or a hard disk drive) and/or removable memory (e.g., removable via a universal serial bus connection). The memory 430 may be a non-transitory computer-readable medium. The memory 430 stores information, instructions, and/or software (e.g., one or more software applications) related to the operation of the device 400. In some implementations, the memory 430 includes one or more memories that are coupled to one or more processors (e.g., the processor 420), such as via the bus 410.

The input component 440 enables the device 400 to receive input, such as user input and/or sensed input. For example, the input component 440 may include a touch screen, a keyboard, a keypad, a mouse, a button, a microphone, a switch, a sensor, a global positioning system sensor, an accelerometer, a gyroscope, and/or an actuator. The output component 450 enables the device 400 to provide output, such as via a display, a speaker, and/or a light-emitting diode. The communication component 460 enables the device 400 to communicate with other devices via a wired connection and/or a wireless connection. For example, the communication component 460 may include a receiver, a transmitter, a transceiver, a modem, a network interface card, and/or an antenna.

The device 400 may perform one or more operations or processes described herein. For example, a non-transitory computer-readable medium (e.g., the memory 430) may store a set of instructions (e.g., one or more instructions or code) for execution by the processor 420. The processor 420 may execute the set of instructions to perform one or more operations or processes described herein. In some implementations, execution of the set of instructions, by one or more processors 420, causes the one or more processors 420 and/or the device 400 to perform one or more operations or processes described herein. In some implementations, hardwired circuitry may be used instead of or in combination with the instructions to perform one or more operations or processes described herein. Additionally, or alternatively, the processor 420 may be configured to perform one or more operations or processes described herein. Thus, implementations described herein are not limited to any specific combination of hardware circuitry and software.

The number and arrangement of components shown in FIG. 4 are provided as an example. The device 400 may include additional components, fewer components, different components, or differently arranged components than those shown in FIG. 4. Additionally, or alternatively, a set of components (e.g., one or more components) of the device 400 may perform one or more functions described as being performed by another set of components of the device 400.

FIG. 5 is a flowchart of an example process 500 for generating and utilizing a personalized vocabulary for search and recommendations. In some implementations, one or more process blocks of FIG. 5 may be performed by a device (e.g., the search system 115). In some implementations, one or more process blocks of FIG. 5 may be performed by another device or a group of devices separate from or including the device, such as a user device (e.g., the user device 110). Additionally, or alternatively, one or more process blocks of FIG. 5 may be performed by one or more components of the device 400, such as the processor 420, the memory 430, the input component 440, the output component 450, and/or the communication component 460.

As shown in FIG. 5, process 500 may include receiving global metadata terms and aliases, group level metadata terms and aliases, and user level metadata terms and aliases (block