204b0aac87
FIX: only possible split sometimes creating children with negative or zero weight in the presence of negative sample weights
2013-01-14 15:06:32 +01:00
37c1d092f8
COSMIT shut up the build by calling np.import_array in Cython modules
...
$(make in 2>&1 | wc -l) down from 706 to 517.
Took the liberty of modernizing some of the Cython code while I was at it.
2013-01-10 18:00:21 +01:00
7f745b8738
FIX: negative weight test. do not allow any class to have negative weight after a split
2013-01-08 23:29:19 +01:00
7945e9d7df
FIX: raise an exception if negative number of samples
2013-01-08 23:29:19 +01:00
329c1cda59
rm unneeded negative weight logic in Criterion.init_value and Gini.eval
2013-01-08 23:29:19 +01:00
9cdb787897
ignore splits that yield nodes with net negative weight in find_best_split
2013-01-08 23:29:19 +01:00
fa35dec328
PEP8 (some)
2013-01-08 23:29:18 +01:00
68e25b1134
ENH: import aliases (3)
2013-01-08 23:29:18 +01:00
a314c9d198
ENH: import aliases (2)
2013-01-08 23:29:18 +01:00
d8c9365e61
ENH: import aliases
2013-01-08 23:29:18 +01:00
e949a42997
ENH: use random_state.shuffle
2013-01-08 23:29:18 +01:00
8dcec88ce8
ENH: early binding + allocate features at tree creation (by @pprett)
2013-01-08 23:29:17 +01:00
cbb8df668b
FIX: roll back some changes
2013-01-08 23:28:52 +01:00
1a83c16b2b
FIX: Do not rely on strides for contiguous arrays
...
When an array is contiguous in memory but has `shape[dim] == 1`, then
its `strides[dim]` is not really used, so it can be considered arbitrary
even if the array is contiguous. This is generally true for 0-sized arrays.
If there is no chance of 0-sized (or 1-sized and 1-dimensioal) arrays, then
this code is perfectly correct in current numpy. But its a dangerous
design choice and it would be nice to be able to change numpy at some point.
2012-12-10 16:33:55 +01:00
34cdc4e222
FIX: prevent early stopping in tree construction (2) + Test
2012-10-22 15:36:36 +02:00
50627fc875
FIX: prevent early stopping in tree construction
2012-10-22 14:34:36 +02:00
7bc9b71b93
Avoid useless if-statements
2012-09-13 13:20:57 +02:00
14c63aa75d
Check for memory errors (3)
2012-09-13 10:39:08 +02:00
8a3c77b48f
Check for memory errors (2)
2012-09-13 10:26:24 +02:00
4390efff7e
Check for memory errors (1)
2012-09-13 09:41:51 +02:00
34729673a4
change dtype of y to float64 (aka DOUBLE_t)
2012-07-21 15:54:36 +02:00
669c980b63
COSMIT
2012-07-16 18:12:54 +02:00
c59ee33de7
Tree refactoring (20)
2012-07-16 16:10:58 +02:00
2eb9e2fdad
FIX: gradient boosting (2)
2012-07-16 15:59:10 +02:00
923e471d34
FIX: PyArray_ZEROS -> np.zeros?
2012-07-16 14:41:24 +02:00
2fe48dc0fd
Tree refactoring (19)
2012-07-16 13:47:20 +02:00
349a1e4b0f
Added _tree.pxd
2012-07-16 11:48:32 +02:00
310ada3a0f
FIX: init/del => cinit/dealloc
2012-07-16 08:35:02 +02:00
4d43fccd69
Merge branch 'tree-speedup' of github.com:glouppe/scikit-learn into tree-speedup
...
Conflicts:
sklearn/tree/_tree.c
sklearn/tree/_tree.pyx
2012-07-13 10:58:12 +02:00
b6d9492c19
FIX: sample_mask
2012-07-13 10:57:01 +02:00
30f0a037a2
Tree refactoring (18)
2012-07-13 09:26:42 +02:00
c08f40b791
Tree refactoring (17)
2012-07-13 09:07:45 +02:00
2b72a1ab04
FIX: @mrjbq7 comments
2012-07-13 09:03:52 +02:00
ec38852fdb
Tree refactoring (16)
2012-07-12 23:13:50 +02:00
f482ebc20f
Tree refactoring (15)
2012-07-12 16:33:58 +02:00
16165c0e02
Tree refactoring (14)
2012-07-12 16:29:56 +02:00
6bc9b82685
Tree refactoring (13)
2012-07-12 14:02:58 +02:00
13cad8ce95
Tree refactoring (12)
2012-07-12 13:24:28 +02:00
c9da1f4bda
ENH: make Tree picklable
2012-07-12 11:29:47 +02:00
b6e68a3dcc
Tree refactoring (11)
2012-07-12 09:55:10 +02:00
2347423e6a
ENH: Tree properties
2012-07-12 09:48:19 +02:00
df04b4c100
Merge branch 'master' of github.com:scikit-learn/scikit-learn into tree-speedup
...
Conflicts:
sklearn/tree/tree.py
2012-07-12 08:35:46 +02:00
1e5aac8159
Tree refactoring (10)
2012-07-11 18:44:15 +02:00
30f62f2d70
Tree refactoring (9)
2012-07-11 16:46:30 +02:00
a868024efa
Tree refactoring (7)
2012-07-11 15:52:32 +02:00
db9cb785d6
Tree refactoring (6)
2012-07-11 14:22:14 +02:00
00153507f7
Tree refactoring (5)
2012-07-11 13:48:51 +02:00
e97671337d
Tree refactoring (4)
2012-07-11 11:58:18 +02:00
3054660008
Tree refactoring (3)
2012-07-10 13:18:06 +02:00
378645877f
Tree refactoring (2)
2012-07-10 12:08:44 +02:00
Noel Dawe