OT: when I click on this, researchgate claims "People who read this publication also read 'Is minimal hepatic encephalopathy completely reversible following liver transplantation?'
Maybe someone was searching for "completely reversible" and got intrigued? But I guess a recommender system is the more likely explanation.
Not a recommender system or anything that intelligent. This is basically a keyword search of the paper titles. Even something as simple as term-frequence analysis would place the two papers far apart.