A method and system are provided. The method includes separating a predicate that specifies a set of events into a temporal part and a non-temporal part. The method further includes comparing the temporal part of the predicate against a predicate of a known window type. The method also includes determining whether the temporal part of the predicate matches the predicate of the known window type. The method additionally includes replacing (i) the non-temporal part of the predicate by a filter, and (ii) the temporal part of the predicate by an instance of the known window type, responsive to the temporal part of the temporal predicate matching the predicate of the known window type. The instance is parameterized with substitutions used to match the temporal part of the predicate to the predicate of the known window type.

Systems and methods of the present invention provide for one or more server computers communicatively coupled to a network and configured to: create a data table of characters, where each character in the data table is assigned a false Boolean value; for each character found in each domain name in a DNS file, update the Boolean value to true; receive a domain search request comprising a token and a TLD; generate candidate domain names using the token and the TLD; query the database to determine if any character in the domain name has the false Boolean value in the data table; and if so, remove the domain name from the candidate domain names.

Embodiments as disclosed may provide a search operator that addresses the problems inherent in the searching based on an entire block of text. Specifically, embodiments as disclosed may provide a search operator that may address the problem of complex query construction and efficient and effective implementation for finding objects based on a block of text.

Aspects of the invention are configured to perform an operation comprising receiving a query specifying an AND condition and an OR condition, determining, based on an AND index structure, a set of documents, of a plurality of documents in a corpus, satisfying the AND condition of the query, computing a query similarity score for a first document in the set of documents, wherein the query similarity score is based on a first hash value computed for the OR condition of the query, a weight value for the OR condition, and a second hash value for the first document specified in an OR index, and returning an indication of the first document and the query similarity score as responsive to the query.

Disclosed are a device and method for providing a checking question designed to allow a user to perform the checking study of correct answers or incorrect answers by using the choices of one or more incorrectly answered questions. The device includes: an incorrectly answered question selection unit which selects one or more questions incorrectly answered by a user from among questions provided to the user; a choice extraction unit which extracts correct answers as choices for the respective selected incorrectly answered questions; a checking question generation unit which generates one or more checking questions designed to allow the user to study the incorrectly answered questions by allocating the extracted choices so that the extracted choices become the choices of the checking questions; and a checking study provision unit which provides the study of the incorrectly answered questions by transmitting the generated checking questions to a user terminal.

Systems, methods, and computer program products configured to perform an operation comprising receiving a query specifying an AND condition and an OR condition, determining, based on an AND index structure, a set of documents, of a plurality of documents in a corpus, satisfying the AND condition of the query, computing a query similarity score for a first document in the set of documents, wherein the query similarity score is based on a first hash value computed for the OR condition of the query, a weight value for the OR condition, and a second hash value for the first document specified in an OR index, and returning an indication of the first document and the query similarity score as responsive to the query.

Generic runtime protection for transactional data may be provided by accessing a list of tables of a database, modifying each table of the list of tables by adding a field that indicates a blocking status of each row in the table, and generating an access control list (ACL) function for each table of the list of tables. When a query is executed on a table of the list of tables, rows that are blocked for the querying user are not returned even if they are responsive to the query, based on the generic ACL function for the table.

A system and method for a text search of a database. A text search expression is converted to a query plan having multiple search tokens. A one-pass indexing of an invested word index filters the inverted word index based on a search condition and identifies the applicable documents having the multiple search tokens.

A portable electronic device according to the present disclosure may include a memory configured to store video data, a touch screen configured to receive a touch input related to a summary of the video data, and a controller configured to generate the summary of the video data in response to the touch input, wherein the controller extracts objects included in the video data, and detects a section in which at least one of the extracted objects appears and then disappears, and edits the video data based on the detected section to generate a summary of the video data.

A method and system are provided. The method includes separating a predicate that specifies a set of events into a temporal part and a non-temporal part. The method further includes comparing the temporal part of the predicate against a predicate of a known window type. The method also includes determining whether the temporal part of the predicate matches the predicate of the known window type. The method additionally includes replacing (i) the non-temporal part of the predicate by a filter, and (ii) the temporal part of the predicate by an instance of the known window type, responsive to the temporal part of the temporal predicate matching the predicate of the known window type. The instance is parameterized with substitutions used to match the temporal part of the predicate to the predicate of the known window type.