Frozen Rush Data Storage

Freezes the Redis data base of an ArchiveAsync to a data.table::data.table(). No further points can be added to the archive but the data can be accessed and analyzed. Useful when the Redis data base is not permanently available. Use the callback bbotk.async_freeze_archive to freeze the archive after the optimization has finished.

S3 Methods

• as.data.table(archive)
  ArchiveAsync -> data.table::data.table()
  Returns a tabular view of all performed function calls of the Objective. The x_domain column is unnested to separate columns.

Super classes

bbotk::Archive -> bbotk::ArchiveAsync -> ArchiveAsyncFrozen

Active bindings

data

(data.table::data.table)
Data table with all finished points.

queued_data

(data.table::data.table)
Data table with all queued points.

running_data

(data.table::data.table)
Data table with all running points.

finished_data

(data.table::data.table)
Data table with all finished points.

failed_data

(data.table::data.table)
Data table with all failed points.

n_queued

(integer(1))
Number of queued points.

n_running

(integer(1))
Number of running points.

n_finished

(integer(1))
Number of finished points.

n_failed

(integer(1))
Number of failed points.

n_evals

(integer(1))
Number of evaluations stored in the archive.

Methods

Public methods

• ArchiveAsyncFrozen$new()

• ArchiveAsyncFrozen$push_points()

• ArchiveAsyncFrozen$pop_point()

• ArchiveAsyncFrozen$push_running_point()

• ArchiveAsyncFrozen$push_result()

• ArchiveAsyncFrozen$push_failed_point()

• ArchiveAsyncFrozen$data_with_state()

• ArchiveAsyncFrozen$clear()

Inherited methods

• bbotk::Archive$format()
• bbotk::Archive$help()
• bbotk::Archive$print()
• bbotk::ArchiveAsync$best()
• bbotk::ArchiveAsync$nds_selection()

---

Method new()

Creates a new instance of this R6 class.

Usage

ArchiveAsyncFrozen$new(archive)

Arguments

archive

(ArchiveAsync)
The archive to freeze.

---

Method push_points()

Push queued points to the archive.

Usage

ArchiveAsyncFrozen$push_points(xss)

Arguments

xss

(list of named list())
List of named lists of point values.

---

Method pop_point()

Pop a point from the queue.

Usage

ArchiveAsyncFrozen$pop_point()

---

Method push_running_point()

Push running point to the archive.

Usage

ArchiveAsyncFrozen$push_running_point(xs, extra = NULL)

Arguments

xs

(named list)
Named list of point values.

extra

(list())
Named list of additional information.

---

Method push_result()

Push result to the archive.

Usage

ArchiveAsyncFrozen$push_result(key, ys, x_domain, extra = NULL)

Arguments

key

(character())
Key of the point.

ys

(list())
Named list of results.

x_domain

(list())
Named list of transformed point values.

extra

(list())
Named list of additional information.

---

Method push_failed_point()

Push failed point to the archive.

Usage

ArchiveAsyncFrozen$push_failed_point(key, message)

Arguments

key

(character())
Key of the point.

message

(character())
Error message.

---

Method data_with_state()

Fetch points with a specific state.

Usage

ArchiveAsyncFrozen$data_with_state(
  fields = c("xs", "ys", "xs_extra", "worker_extra", "ys_extra", "condition"),
  states = c("queued", "running", "finished", "failed"),
  reset_cache = FALSE
)

Arguments

fields

(character())
Fields to fetch. Defaults to c("xs", "ys", "xs_extra", "worker_extra", "ys_extra").

states

(character())
States of the tasks to be fetched. Defaults to c("queued", "running", "finished", "failed").

reset_cache

(logical(1))
Whether to reset the cache of the finished points.

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Method clear()

Clear all evaluation results from archive.

Usage

ArchiveAsyncFrozen$clear()