Trivial doc fix
diff --git a/docs/gitbook/binaryclass/news20_generic_bagging.md b/docs/gitbook/binaryclass/news20_generic_bagging.md
index ba5b949..0e8c5f0 100644
--- a/docs/gitbook/binaryclass/news20_generic_bagging.md
+++ b/docs/gitbook/binaryclass/news20_generic_bagging.md
@@ -37,23 +37,13 @@
) as (feature,weight)
from
news20b_train_x3
-),
-models as (
- select
- taskid() as modelid,
- feature,
- weight
- from
- train
)
select
- modelid,
+ taskid() as modelid,
feature,
- voted_avg(weight) as weight -- or simply avg(weight)
-from
- models
-group by
- modelid, feature;
+ weight
+from
+ train;
```
## prediction
@@ -73,10 +63,10 @@
group by
rowid, modelid
),
-voted as (
+bagging as (
select
rowid,
- voted_avg(total_weight) as total_weight
+ avg(total_weight) as total_weight
from
weights
group by
@@ -85,9 +75,11 @@
select
rowid,
max(total_weight) as total_weight, -- max is dummy
+ -- Note: sum(total_weight) > 0.0 equals to sigmoid((total_weight)) > 0.5
+ -- https://en.wikipedia.org/wiki/Sigmoid_function
case when sum(total_weight) > 0.0 then 1 else -1 end as label
from
- voted
+ bagging
group by
rowid;
```
