fix expand bug #20340
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fix expand bug #20340
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guoshengCS
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Oct 12, 2019
* fix expand bug test=develop * fix style test=develop * fix style test=develop * fix style test=develop * fix style test=develop
guoshengCS
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Oct 13, 2019
* Add seq2seq api related code (#19820) * fix expand bug (#20340) * fix expand bug test=develop * fix style test=develop * fix style test=develop * fix style test=develop * fix style test=develop * Fix the assign data check (#20564) * Fix the assign data check. test=develop * Fix test_assign_op.py. test=develop * Update API.spec
seiriosPlus
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Dec 9, 2019
* fix expand bug test=develop * fix style test=develop * fix style test=develop * fix style test=develop * fix style test=develop
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expand前向和后向传播类型不一致的bug修复 同时添加类型检查
需求描述：
1、expand的前向和后向注册的dtype kernel不一致
2、期望加入规范，并且增加排查，如果特殊的可以单独说明
3、报错信息用户：该问题报错信息只能内部研发才能看得出原因，不利用用户自己排查问题
需求来源：
· 链接:#19878
· 问题：optimizer.minimize(avg_cost)无法反向传播
· 解答：maxdisp, mask_sum这些设置stop_gradient=True试下