Abstract: A device includes a logic machine and a data-holding machine having instructions executable by the logic machine to receive a spreadsheet including a plurality of cells, apply an abstraction to the spreadsheet that defines one or more features of a cell set including one or more cells of the plurality of cells to form an abstracted representation of the spreadsheet, form, for the cell set, an input vector for a machine-learning prediction function from the abstracted representation of the spreadsheet, the machine-learning prediction function configured to output a prediction of one or more properties of the cell set based on the input vector, wherein the machine-learning prediction function is previously trained based on a plurality of previously-created spreadsheets, provide the input vector to the machine-learning prediction function; and output the prediction from the machine-learning prediction function.

Abstract: A device includes a logic machine and a data-holding machine having instructions executable by the logic machine to receive a spreadsheet including a plurality of cells, apply an abstraction to the spreadsheet that defines one or more features of a cell set including one or more cells of the plurality of cells to form an abstracted representation of the spreadsheet, form, for the cell set, an input vector for a machine-learning prediction function from the abstracted representation of the spreadsheet, the machine-learning prediction function configured to output a prediction of one or more properties of the cell set based on the input vector, wherein the machine-learning prediction function is previously trained based on a plurality of previously-created spreadsheets, provide the input vector to the machine-learning prediction function; and output the prediction from the machine-learning prediction function.

Abstract: A client-side enforcement mechanism may allow application security policies to be specified at a server in a programmatic manner. Servers may specify security policies as JavaScript functions included in a page returned by the server and run before other scripts. At runtime, and during initial loading, the functions are invoked by the client on each page modification to ensure the page conforms to the security policy. As such, before a mutation takes effect, the policy may transform that mutation and the code and data of the page. Replicated code execution may take place at both the client and the server where the server runs its own shadow copy of a client-side application in a trusted execution environment so that the server may check that the method calls coming from the client correspond to a correct execution of the client-side application The redundant execution at the client can be untrusted, but serves to improve the responsiveness and performance of the Web application.

Abstract: A client-side enforcement mechanism may allow application security policies to be specified at a server in a programmatic manner. Servers may specify security policies as JavaScript functions included in a page returned by the server and run before other scripts. At runtime, and during initial loading, the functions are invoked by the client on each page modification to ensure the page conforms to the security policy. As such, before a mutation takes effect, the policy may transform that mutation and the code and data of the page. Replicated code execution may take place at both the client and the server where the server runs its own shadow copy of a client-side application in a trusted execution environment so that the server may check that the method calls coming from the client correspond to a correct execution of the client-side application The redundant execution at the client can be untrusted, but serves to improve the responsiveness and performance of the Web application.