Invoice processing

A method of generating an invoice summary document from an invoice received by a recipient from a vendor, said invoice summary document for processing by an invoice processing system, said method comprising:

• receiving an electronic invoice image file corresponding to an image of an invoice relating to one or more transactions between the vendor and recipient;
• extracting text data from the electronic invoice image file;
• processing the extracted text data to identify:
• vendor identity text data corresponding to a vendor identity associated with the vendor, and
• transaction details text data corresponding to details of one or more transactions with which the invoice is associated;
• using the vendor identity to retrieve from data storage vendor characteristics data associated with characteristics of the vendor;
• inputting to a ML network:
• the vendor characteristics data,
• recipient characteristics data associated with characteristics of the recipient retrieved from data storage,
• the transaction details text data, and
• transaction classifier data associated with a plurality of transaction classifiers potentially associated with the one or more transactions, wherein
• said ML network trained to estimate which of the transaction classifiers are associated with the one or more transactions with which the invoice is associated;
• outputting from the ML network estimates of which of the transaction classifiers are associated with the one or more transactions with which the invoice is associated, and
• assembling the invoice document using the transaction details text data and the one or more transaction classifiers output from the ML network.