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From "wangwei (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SINGA-107) Error from loading pre-trained params for training stacked RBMs
Date Thu, 03 Dec 2015 09:35:10 GMT

     [ https://issues.apache.org/jira/browse/SINGA-107?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

wangwei updated SINGA-107:
--------------------------
    Summary: Error from loading pre-trained params for training stacked RBMs  (was: pre-trained
param checkpoint version reset problem )

> Error from loading pre-trained params for training stacked RBMs
> ---------------------------------------------------------------
>
>                 Key: SINGA-107
>                 URL: https://issues.apache.org/jira/browse/SINGA-107
>             Project: Singa
>          Issue Type: Bug
>            Reporter: ZHAOJING
>
> When params are loaded from checkpoint files, their version numbers will be reset to
0 for fine-tuning as explained in the comments of SINGA-42.
> Then if this param is used again in another model, then the version number will become
0 and this param is not regarded as pre-training param thus will require initialization, which
will incur problems.
> Present solution is to load this param more than one time, so that the latter loading
can override the first loading, and the version number will not be 0 and this param is still
regarded as pre-training param.
> For example, in rbm3.conf, we write like:
> checkpoint_path: "examples/rbm/rbm2/checkpoint/step6000-worker0"
> checkpoint_path: "examples/rbm/rbm1/checkpoint/step6000-worker0"
> in order to load w1 and b12 twice.



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