Abstract: The present disclosure provides a method and an apparatus for obtaining an expression from characters. The method may include: extracting N words under test from a text under test in an arrangement order; inputting an i-th node in the first-level operation, each node of a first node to an i?1 th node in the first-level operation, and a predefined set of operators into a sub-network of a recurrent neural network to obtain nodes of a second-level operation; determining a valid operator in the first-level operation according to the nodes of the second-level operation; performing multi-level operations until the number of valid operators in a M-level operation is determined to be 0 according to the obtained nodes of the M+1-level operation; and generating the expression from the text under test according to valid operators in the first-level operation to the M?1-level operation and words corresponding to valid nodes.

Abstract: The disclosure discloses a method, apparatus, device for table extraction based on a richly formatted document and medium. The method comprises: acquiring page content; performing a table detection process on the page content by use of a preset table detection model to obtain a list of table tags, and to obtain a first table content; performing, by use of a preset through-line drawing model, a through-line drawing process on the first table content to obtain a list of through-line tags, and to obtain a second table content; and performing, by use of a preset table-cell merging model, a table-cell merging process on the second table content to obtain a list of short-line tags, and to obtain an explicit table content.

Abstract: The disclosure discloses a method, apparatus, device for table extraction based on a richly formatted document and medium. The method comprises: acquiring page content; performing a table detection process on the page content by use of a preset table detection model to obtain a list of table tags, and to obtain a first table content; performing, by use of a preset through-line drawing model, a through-line drawing process on the first table content to obtain a list of through-line tags, and to obtain a second table content; and performing, by use of a preset table-cell merging model, a table-cell merging process on the second table content to obtain a list of short-line tags, and to obtain an explicit table content.

Abstract: The present disclosure provides a method and an apparatus for obtaining an expression from characters. The method may include: extracting N words under test from a text under test in an arrangement order; inputting an i-th node in the first-level operation, each node of a first node to an i?1 th node in the first-level operation, and a predefined set of operators into a sub-network of a recurrent neural network to obtain nodes of a second-level operation; determining a valid operator in the first-level operation according to the nodes of the second-level operation; performing multi-level operations until the number of valid operators in a M-level operation is determined to be 0 according to the obtained nodes of the M+1-level operation; and generating the expression from the text under test according to valid operators in the first-level operation to the M?1-level operation and words corresponding to valid nodes.