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From "LI Guobao (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SYSTEMML-2299) API design of the paramserv function
Date Sun, 13 May 2018 14:19:00 GMT

     [ https://issues.apache.org/jira/browse/SYSTEMML-2299?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

LI Guobao updated SYSTEMML-2299:
--------------------------------
    Description: 
The objective of “paramserv” built-in function is to update an initial or existing model
with configuration. An initial function signature would be: 
{code:java}
model'=paramserv(model, X, y, X_val, y_val, upd="fun1", agg="fun2", mode="BSP", freq="EPOCH",
epochs=100, batchsize=64, k=7, scheme=disjoint_contiguous, hyperparam=params, checkpoint=NONE){code}
We are interested in providing the model (which will be a struct-like data structure consisting
of the weights, the biases and the hyperparameters), the training features and labels, the
validation features and labels, the batch update function (i.e., gradient calculation func),
the update strategy (e.g. sync, async, hogwild!, stale-synchronous), the update frequency
(e.g. epoch or mini-batch), the gradient aggregation function, the number of epoch, the batch
size, the degree of parallelism, the data partition scheme, a list of additional hyper parameters,
as well as the checkpointing strategy. And the function will return a trained model in struct
format.

*Inputs*:
 * model <list>: a list consisting of the weight and bias matrices
 * X <matrix>: training features matrix
 * y <matrix>: training label matrix
 * X_val <matrix>: validation features matrix
 * y_val <matrix>: validation label matrix
 * upd <string>: the name of gradient calculation function
 * agg <string>: the name of gradient aggregation function
 * mode <string> (options: BSP, ASP, SSP): the updating mode
 * freq <string> (options: EPOCH, BATCH): the frequence of updates
 * epochs <integer>: the number of epoch
 * batchsize <integer>: the size of batch
 * k <integer>: the degree of parallelism
 * scheme <string> (options: disjoint_contiguous, disjoint_round_robin, disjoint_random,
overlap_reshuffle): the scheme of data partition, i.e., how the data is distributed across
workers
 * hyperparam <list> [optional]: a list consisting of the additional hyper parameters,
e.g., learning rate, momentum
 * checkpoint <string> (options: NONE(default), EPOCH, EPOCH10) [optional]: the checkpoint
strategy, we could set a checkpoint for each epoch or each 10 epochs 

Output:
 * model' <list>: a list consisting of the updated weight and bias matrices

  was:
The objective of “paramserv” built-in function is to update an initial or existing model
with configuration. An initial function signature would be: 
{code:java}
model'=paramserv(model, X, y, X_val, y_val, upd="fun1", agg="fun2", mode="BSP", freq="EPOCH",
epochs=100, batchsize=64, k=7, scheme=disjoint_contiguous, hyperparam=params, checkpoint=NONE){code}
We are interested in providing the model (which will be a struct-like data structure consisting
of the weights, the biases and the hyperparameters), the training features and labels, the
validation features and labels, the batch update function (i.e., gradient calculation func),
the update strategy (e.g. sync, async, hogwild!, stale-synchronous), the update frequency
(e.g. epoch or mini-batch), the gradient aggregation function, the number of epoch, the batch
size, the degree of parallelism, the data partition scheme, a list of additional hyper parameters,
as well as the checkpointing strategy. And the function will return a trained model in struct
format.

*Inputs*:
 * model <list>: a list consisting of the weight and bias matrices
 * X <matrix>: training features matrix
 * y <matrix>: training label matrix
 * X_val <matrix>: validation features matrix
 * y_val <matrix>: validation label matrix
 * upd <string>: the name of gradient calculation function
 * agg <string>: the name of gradient aggregation function
 * mode <string> (options: BSP, ASP, SSP): the updating mode
 * freq <string> (options: EPOCH, BATCH): the frequence of updates
 * epochs <integer>: the number of epoch
 * batchsize <integer>: the size of batch
 * k <integer>: the degree of parallelism
 * scheme <string> (options: disjoint_contiguous, disjoint_round_robin, disjoint_random,
overlap_reshuffle): the scheme of data partition, i.e., how the data is distributed across
workers
 * hyperparam <list> [optional]: a list consisting of the additional hyper parameters,
e.g., learning rate, momentum
 * checkpoint <string> (options: NONE(default), EPOCH, EPOCH10) [optional]: the checkpoint
strategy, we could set a checkpoint for each epoch or each 10 epochs 


> API design of the paramserv function
> ------------------------------------
>
>                 Key: SYSTEMML-2299
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-2299
>             Project: SystemML
>          Issue Type: Sub-task
>            Reporter: LI Guobao
>            Assignee: LI Guobao
>            Priority: Major
>
> The objective of “paramserv” built-in function is to update an initial or existing
model with configuration. An initial function signature would be: 
> {code:java}
> model'=paramserv(model, X, y, X_val, y_val, upd="fun1", agg="fun2", mode="BSP", freq="EPOCH",
epochs=100, batchsize=64, k=7, scheme=disjoint_contiguous, hyperparam=params, checkpoint=NONE){code}
> We are interested in providing the model (which will be a struct-like data structure
consisting of the weights, the biases and the hyperparameters), the training features and
labels, the validation features and labels, the batch update function (i.e., gradient calculation
func), the update strategy (e.g. sync, async, hogwild!, stale-synchronous), the update frequency
(e.g. epoch or mini-batch), the gradient aggregation function, the number of epoch, the batch
size, the degree of parallelism, the data partition scheme, a list of additional hyper parameters,
as well as the checkpointing strategy. And the function will return a trained model in struct
format.
> *Inputs*:
>  * model <list>: a list consisting of the weight and bias matrices
>  * X <matrix>: training features matrix
>  * y <matrix>: training label matrix
>  * X_val <matrix>: validation features matrix
>  * y_val <matrix>: validation label matrix
>  * upd <string>: the name of gradient calculation function
>  * agg <string>: the name of gradient aggregation function
>  * mode <string> (options: BSP, ASP, SSP): the updating mode
>  * freq <string> (options: EPOCH, BATCH): the frequence of updates
>  * epochs <integer>: the number of epoch
>  * batchsize <integer>: the size of batch
>  * k <integer>: the degree of parallelism
>  * scheme <string> (options: disjoint_contiguous, disjoint_round_robin, disjoint_random,
overlap_reshuffle): the scheme of data partition, i.e., how the data is distributed across
workers
>  * hyperparam <list> [optional]: a list consisting of the additional hyper parameters,
e.g., learning rate, momentum
>  * checkpoint <string> (options: NONE(default), EPOCH, EPOCH10) [optional]: the
checkpoint strategy, we could set a checkpoint for each epoch or each 10 epochs 
> Output:
>  * model' <list>: a list consisting of the updated weight and bias matrices



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