ec.exchange
Class AbstractIslandExchangeServer<D extends IslandInfo>

java.lang.Object
  ec.exchange.AbstractIslandExchangeServer<D>

Direct Known Subclasses:

IslandExchangeServer

public abstract class AbstractIslandExchangeServer<D extends IslandInfo>
extends java.lang.Object

Base class for island exchange servers. This contains parameter declarations and methods common to both the ECJ island server and the ORIGIN Frontier-based island implementation.

Field Summary

int	global_modulo If synchronous this generation modulo is used for all islands
int	global_offset If synchronous this generation offset is used for all islands
java.util.HashMap<java.lang.String,D>	info Maps between island ids and info structures
java.lang.String[]	island_ids Island ids from parameter files
int	numIslands The number of islands in the topology
static java.lang.String	P_ID The id
static java.lang.String	P_ISLAND The parameter for the island's information
static java.lang.String	P_MIGRATING_ISLAND the parameter for migrating islands' ids
static java.lang.String	P_MODULO The parameter for the modulo (how many generations should pass between consecutive sendings of individuals
static java.lang.String	P_NUM_INCOMING_MIGRATING_COUNTRIES
static java.lang.String	P_NUM_ISLANDS The number of islands
static java.lang.String	P_NUM_MIGRATING_COUNTRIES The number of islands where emigrants will be sent
static java.lang.String	P_OFFSET How many generations to pass at the beginning of the evolution before the first emigration from the current island
static java.lang.String	P_SELECT_METHOD The selection method for sending individuals to other islands
static java.lang.String	P_SELECT_TO_DIE_METHOD The selection method for deciding individuals to be replaced by immigrants
static java.lang.String	P_SIZE The number of emigrants to be sent
static java.lang.String	P_SYNCHRONOUS Whether the execution should be synchronous or asynchronous
boolean	synchronous true if islands execute synchronously

Constructor Summary

AbstractIslandExchangeServer()

Method Summary

D	getIsland(java.lang.String islandId) Gets island info
java.util.Collection<D>	islands()
protected abstract D	setupIslandInfo(EvolutionState state, Parameter localBase, Parameter islandBase)
void	setupServerFromDatabase(EvolutionState state, Parameter base)
protected void	setupStandardIslandInfo(EvolutionState state, Parameter localBase, IslandInfo ieii) Populates island info from parameter database

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

P_NUM_ISLANDS

public static final java.lang.String P_NUM_ISLANDS

The number of islands

See Also:

Constant Field Values

P_ISLAND

public static final java.lang.String P_ISLAND

The parameter for the island's information

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Constant Field Values

P_ID

public static final java.lang.String P_ID

The id

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Constant Field Values

P_NUM_INCOMING_MIGRATING_COUNTRIES

public static final java.lang.String P_NUM_INCOMING_MIGRATING_COUNTRIES

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Constant Field Values

P_NUM_MIGRATING_COUNTRIES

public static final java.lang.String P_NUM_MIGRATING_COUNTRIES

The number of islands where emigrants will be sent

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Constant Field Values

P_MIGRATING_ISLAND

public static final java.lang.String P_MIGRATING_ISLAND

the parameter for migrating islands' ids

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Constant Field Values

P_MODULO

public static final java.lang.String P_MODULO

The parameter for the modulo (how many generations should pass between consecutive sendings of individuals

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Constant Field Values

P_SIZE

public static final java.lang.String P_SIZE

The number of emigrants to be sent

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Constant Field Values

P_OFFSET

public static final java.lang.String P_OFFSET

How many generations to pass at the beginning of the evolution before the first emigration from the current island

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Constant Field Values

P_SYNCHRONOUS

public static final java.lang.String P_SYNCHRONOUS

Whether the execution should be synchronous or asynchronous

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Constant Field Values

P_SELECT_METHOD

public static final java.lang.String P_SELECT_METHOD

The selection method for sending individuals to other islands

See Also:

Constant Field Values

P_SELECT_TO_DIE_METHOD

public static final java.lang.String P_SELECT_TO_DIE_METHOD

The selection method for deciding individuals to be replaced by immigrants

See Also:

Constant Field Values

numIslands

public int numIslands

The number of islands in the topology

island_ids

public java.lang.String[] island_ids

Island ids from parameter files

info

public java.util.HashMap<java.lang.String,D extends IslandInfo> info

Maps between island ids and info structures

synchronous

public boolean synchronous

true if islands execute synchronously

global_modulo

public int global_modulo

If synchronous this generation modulo is used for all islands

global_offset

public int global_offset

If synchronous this generation offset is used for all islands

Constructor Detail

AbstractIslandExchangeServer

public AbstractIslandExchangeServer()

Method Detail

setupServerFromDatabase

public void setupServerFromDatabase(EvolutionState state,
                                    Parameter base)

islands

public java.util.Collection<D> islands()

Returns:

Collection of islands

getIsland

public D getIsland(java.lang.String islandId)

Gets island info

Parameters:

islandId - Island id

Returns:

Island info for this island, or null if the island doesn't exist.

setupIslandInfo

protected abstract D setupIslandInfo(EvolutionState state,
                                     Parameter localBase,
                                     Parameter islandBase)

setupStandardIslandInfo

protected void setupStandardIslandInfo(EvolutionState state,
                                       Parameter localBase,
                                       IslandInfo ieii)

Populates island info from parameter database

Parameters:

state - Evolution state

localBase - Island parameter base

ieii - Island info