 TFD initially brought together factual information from a range of different sources and presented this information back to practitioners in a unified way. The development of the targeted risk models marked a shift in this approach, and came from an ambition to deliver more instructive insight based on the data held within the TFD. This related to one of the core purposes of the TFD: a desire to identify risk and vulnerability at an earlier stage to enable earlier intervention. Due to both local and national patterns of demand at the time of development, three risk areas were identified as suitable topic areas to develop targeted risk models for. These were children at risk of sexual exploitation (CSE), children at risk of criminal exploitation (CCE), and children at risk of not being in employment, education or training when they left school aged 16 (NEET). ‘Recall’ and ‘precision’ performance metrics were used to test efficacy of the risk models when they were built. Recall reflects a model's ability to find all positives, for example all children given certain criteria. A higher recall means fewer false negatives (children not identified). Whereas, precision reflects how often the model correctly identifies positives; in this case, children within these criteria. A higher precision indicates fewer false positives (wrongly identified children). Social Finance Limited +44 (0) 20 7770 6836 87 Vauxhall Walk, London SE11 5HJ socialfinance.org.uk 54 However, as with the TFD, specific measurable objectives to ascertain whether these risk models were achieving the desired impact were not developed, as noted in respect of the NEET model by a member of the Insight Bristol Team: “This piece of work was always much less clear in scope… who the customer [and] who the user would 