Methods, systems, and apparatus for determining that a native application limits access to the native application using account credential requirements, the native application generating an application environment for display on a user device within the native application and operating independent of a browser application that can operate on the user device; obtaining a set of account credentials for indexing environment instances of the native application; instantiating the native application with the set of account credentials; and accessing environment instances of the native application, and for each of the environment instances: generating environment instance data describing content of the environment instance, the content described by the environment instance data including text that a user device displays on the environment instance when the user device displays the environment instance; and indexing the environment instance data for the native application in an index that is searchable by a search engine.

In one embodiment, a method includes receiving a search query, searching a reverse index to identify one or more objects having one or more tokens that match the search query, and accessing a forward index that has several records that each correspond to an object posted to an online social network. Each record may comprise a first field of tokens, and one or more second fields corresponding to metadata associated with each of the tokens. The method may further include scoring each identified object based on its respective record. The score for each identified object may be calculated based on the metadata associated with each of the tokens. The method may also include sending, to the client system in response to the received search query, instructions for presenting one or more search results corresponding to the identified objects having a score greater than a threshold score.

Methods and systems for providing a search engine capability for large datasets are disclosed. These methods and systems employ a Partition-by-Query index containing key-values pairs corresponding to keys reflecting concept-ordered search phrases and values reflecting ordered lists of document references that are responsive to the concept-ordered search phrase in a corresponding key. A large Partition-by-Query index may be partitioned across multiple servers depending on the size of the index, or the size of the index may be reduced by compressing query-references pairs into clusters. The methods and systems described herein may to provide suggestions and spelling corrections to the user, thereby improving the user's search engine experience while meeting user expectations for search quality and responsiveness.

Techniques for domain capture. In one embodiment, for example, a method comprises detecting an attempt by a personal user account to use the online service where the account is associated with an electronic mail address that belongs to an owner of a domain name service domain. Based on detecting the attempt, the online service prompts the particular personal user account to join a team of user accounts. Upon receiving an acceptance of the particular personal user account to join the team, the personal user account is offered an option between converting the personal user account to a team user account that is a member of the team or changing the electronic mail address associated with the personal user account to a different electronic mail address that is not owned.

Methods and systems for providing a search engine capability for large datasets are disclosed. These methods and systems employ a Partition-by-Query index containing key-values pairs corresponding to keys reflecting concept-ordered search phrases and values reflecting ordered lists of document references that are responsive to the concept-ordered search phrase in a corresponding key. A large Partition-by-Query index may be partitioned across multiple servers depending on the size of the index, or the size of the index may be reduced by compressing query-references pairs into clusters. The methods and systems described herein may to provide suggestions and spelling corrections to the user, thereby improving the user's search engine experience while meeting user expectations for search quality and responsiveness.

A system and method dynamically analyze documents to determine relevancy of a document relatively quickly and efficiently. Potentially relevant documents can be determined using a search string and then converted into corresponding document data structures for analysis. Keywords can be used to identify documents of interest from the document data structures. Tools are provided to assess the relevancy of documents, including tools to determine the frequency of keywords in the documents, to compare documents, and to contrast documents. Algorithms are provided that use prior searches to determine sets of relevant documents. Adaptive search methods are provided that refine searching during analysis to reduce a number of documents that are not sufficiently relevant. A dynamic relevancy matrix can be generated that provides access to keyword frequency and associated keyword frequency for a plurality of documents.

Optimizations are provided for generating a list of search results. At a user interface, a query is received from a user who is using the user interface. This query includes a request to access digital content. In response to the request, a set of query results is obtained. This set of query results includes a first list of selectable links. Each of these links is associated with the digital content requested by the query and is prioritized according to a particular order. Then, an access performance rate is determined for at least some of the links included within the first list. A second list of links is then generated by evaluating the links of the first list against a set of rules. This set of rules prioritizes the links based at least partially on the determined access performance rates. Subsequently, the user interface is updated to reflect the second list.

Systems and methods are provided for identifying and requesting content related to a webpage. Such an exemplary computer-implemented method can include the acts of receiving instructions at the browser to request a first webpage, identifying content on the first webpage, generating and sending a search query to a search engine based on the identified content, and receiving search results from the search engine based on the search query. The search results can include a listing of webpages identified by the search engine, and without displaying the search results, a request can be initiated for a plurality of webpages from the listing of webpages.

Optimizations are provided for distinguishing between webpages that are cached and webpages that have been or currently are displayed on a user interface. In some instances, a list of webpages is generated in response to a query entered by a user. Then, a determined number of webpages that were included in the list are cached in memory. These cached webpages each have an associated agent string, and at least some of these agent strings are updated to reflect a cached status. Subsequently, a first webpage is displayed on a user interface. This first webpage was included among those webpages that were cached. Further, the agent string for this webpage is updated to reflect an in-view status. In response to the first webpage being replaced by a second webpage, the agent string for the second webpage is then updated to reflect the in-view status.

Some aspects disclosed herein are directed to, for example, a system and method comprising a client device receiving an input of at least a portion of a message. The client device may transmit, to a server device, the at least the portion of the message for display via a second client device. The client device may determine an identifier for the at least the portion of the message. The client device may determine, based on a lexicon, a marker name for the at least the portion of the message. The client device may generate an association between the marker name for the at least the portion of the message and the identifier for the at least the portion of the message. The client device may store, at a storage location, the marker name for the at least the portion of the message, the identifier for the at least the portion of the message, and the association between the marker name for the at least the portion of the message and the identifier for the at least the portion of the message.