提交 57bc564d 编写于 作者: Y yangyaming

Polish doc for lod_rank_table.

上级 10cd6eb6
......@@ -397,20 +397,29 @@ class While(object):
def lod_rank_table(x, level=0):
"""LoD Rank Table Operator. Given an input variable `x` and a LoD level,
this layer creates a LodRankTable object. A LoDRankTable object contains a
list of bi-element tuples and each tuple consists of an index and a length.
For given level's LoD information, the index is the sequence position and
the length representes the sequence length. Please note that the list is
ranked in descending order by the length. The following is an example:
"""LoD Rank Table Operator. Given an input variable **x** and a level number
of LoD, this layer creates a LodRankTable object. A LoDRankTable object
contains a list of bi-element tuples. Each tuple consists of an index and
a length, both of which are int type. Reffering to specified level of LoD,
the index is the sequence index number and the length representes the
sequence length. Please note that the list is ranked in descending order by
the length. The following is an example:
.. code-block:: text
x is a LoDTensor:
x.lod = [[0, 1, 2, 3],
x.lod = [[0, 2, 3],
[0, 5, 6, 7]]
x.data = [a, b, c, d, e, f, g]
1. set level to 0:
Create lod rank table:
lod_rank_table_obj = lod_rank_table(x, level=0)
Get:
lod_rank_table_obj.items() = [(0, 2), (1, 1)]
2. set level to 1:
Create lod rank table:
lod_rank_table_obj = lod_rank_table(x, level=1)
......
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