Our latest releases for the Retina API (2.3) and Retina Spark (2.1) see improvements to the algorithm converting texts to semantic fingerprints. As a result, the quality of semantic operations on text - keyword extraction, slicing or creation of a category filter - has improved and the comparison of text similarity delivers even more accurate results: try it out with our sandbox API! By the way, did you hear that Cortical.io's Semantic Folding approach helps improve the prediction of stock return correlations? This is the conclusion of an independent academic study conducted by researchers from Leiden, Ben-Gurion and Toulouse Universities.