Complex sentence: To make co-citation a more meaningful measure in such cases, a Co-Citation Proximity Index (CPI) can be introduced to account for the placement of citations relative to each other, with documents co-cited at greater relative distances in the full text receiving lower CPI values.
Split into simpler sentences: To make co-citation a more meaningful measure in this case, a Co-Citation Proximity Index (CPI) can be introduced to account for the placement of citations relative to each other. Documents co-cited at greater relative distances in the full text receive lower CPI values.