Table 2.

Archives and channels doors definitions.

Archives and Channels Doors Definitions
Definition	Description	Type of Data Extraction	AI Technologies and Automatisms Performed
Platform based on ontology	Platform in use in our hospital for standardized data collection (BLADE, RedCAP, etc.). In this platform it is integrated a shared ontology that codifies data in unique, non-ambiguous way.	Organized and “ontologized” data	NEURAL NETWORKS
Datawarehouse used in Fondazione Policlinico Gemelli IRCCS	Data warehouses in use in our hospital for clinical assistance (SI, Aria, Speed (advanced evolution of Spider [10], Armonia, TrackCare, etc.). In these systems, data are codified based on clinical practice (e.g., Hb value, date of surgery, etc.), and are data validated by conventional clinical use	Organized, not “ontologized” data	NEURAL NETWORKS
Text mining extraction from PDF documents or electronic reports	All the electronic documents present in previous archives in which a procedure of text-mining extraction was applied to recover non-structured data. This is a very relevant part of data extraction, because we can recover a big quantity of granular information and translate it into structured data for usage in clinical practice and research.	Not organized, not “ontologized” data	TEXT MINING AUTOLEARN NEURAL NETWORKS