Abstract: Methods and apparatus are provided for automatically transcoding media files. An exemplary method comprises obtaining an input media file having an input file format and encoded with a codec of a first type; automatically determining output media file formats for transcoding the input media file based on statistics of previously transcoded files and statistics of trending media formats for previously downloaded files; transcoding the input media file into transcoded output media files using a codec of a second type to obtain the determined output media file formats; and generating metadata for each of said plurality of transcoded output media files, wherein said metadata is stored in memory as a media catalogue separately from said one or more transcoded output media files.

Abstract: Person-centric multi-channel opinion mining is performed in a single data repository, such as a data lake. An exemplary method comprises obtaining multi-channel heterogeneous data from a plurality of channels; identifying entities that are targets of opinion information across the plurality of channels; extracting a plurality of user identities from the plurality of channels; aligning the plurality of extracted user identities across the plurality of channels to link common user identities; identifying the entities that are targets of the opinion information of the extracted user identities; linking opinion information of the extracted user identities with a user identity associated with an opinion holder that expressed the opinion information; determining whether the opinion information comprises a positive or negative opinion; and providing a summary of the opinion information of a given opinion holder.

Abstract: Methods and apparatus are provided for integrating a plurality of different database types in a semantic multi-database data lake. An exemplary method comprises providing a plurality of databases having different database types; translating ontology definition language database commands obtained from a user into a plurality of data definition language and/or data manipulation language commands supported by the different database types in order to replicate data from the user to each of the different database types; obtaining a query specified in a query language of a given database; and delegating the query to the given database. A plurality of cluster gateways optionally manage a corresponding plurality of clusters of database instances and wherein queries are delegated to a given database instance by delegating the queries to the appropriate cluster gateway. Dark data that was not queried by any supported query language in a predefined period of time can be detected.

Abstract: Methods and apparatus are provided for automatically transcoding media files. An exemplary method comprises obtaining an input media file having an input file format and encoded with a codec of a first type; automatically determining output media file formats for transcoding the input media file based on statistics of previously transcoded files and statistics of trending media formats for previously downloaded files; transcoding the input media file into transcoded output media files using a codec of a second type to obtain the determined output media file formats; and generating metadata for each of said plurality of transcoded output media files, wherein said metadata is stored in memory as a media catalogue separately from said one or more transcoded output media files.

Abstract: Methods and apparatus are provided for automatically transcoding media files. An exemplary method comprises obtaining an input media file having an input file format and encoded with a codec of a first type; automatically determining output media file formats for transcoding the input media file based on statistics of previously transcoded files and statistics of trending media formats for previously downloaded files; and transcoding the input media file into transcoded output media files using a codec of a second type to obtain the determined output media file formats. The output media file formats can be automatically determined using a weighting scheme. Transcoding algorithms are optionally automatically selected based on transcoding algorithms previously used to transcode proximally similar files as the input media file.

Abstract: Methods and apparatus are provided for integrating heterogeneous multi-channel data using ontologies.