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## 7.12. Boosting recommendation results

Figure 7.10. Graph

This query finds the recommended friends for the origin that are working at the same place as the origin, or know a person that the origin knows, also, the origin should not already know the target. This recommendation is weighted for the weight of the relationship `r2`, and boosted with a factor of 2, if there is an `activity`-property on that relationship

Query.

    START origin=node:node_auto_index(name = "Clark Kent")
    MATCH origin-[r1:KNOWS|WORKSAT]-(c)-[r2:KNOWS|WORKSAT]-candidate
    WHERE type(r1)=type(r2) AND (NOT (origin-[:KNOWS]-candidate))
    RETURN origin.name as origin, candidate.name as candidate,
    SUM(ROUND(r2.weight + (COALESCE(r2.activity?, 0) * 2))) as boost
    ORDER BY boost desc
    LIMIT 10

This returns the recommended friends for the origin nodes and their recommendation score.

Result

origin | candidate | boost
--- | --- | ---
2 rows
0 ms
`"Clark Kent"` | `"Perry White"` | `22`
`"Clark Kent"` | `"Anderson Cooper"` | `4`

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