Class TradeFlowAnalyzer

java.lang.Object

org.episteme.social.economics.TradeFlowAnalyzer

public final class TradeFlowAnalyzer
extends Object

Trade flow analysis using gravity model and related methods.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final record	TradeFlowAnalyzer.Country
static final record	TradeFlowAnalyzer.GravityModelResult
static final record	TradeFlowAnalyzer.TradeFlow

Method Summary

Modifier and Type	Method	Description
static Map<String, Map<String,Real>>	buildTradeMatrix(List<TradeFlowAnalyzer.TradeFlow> flows)	Analyzes bilateral trade matrix.
static Real	exportConcentration(Map<String,Real> exportsByProduct)	Herfindahl-Hirschman Index for export concentration.
static Real	grubelLloydIndex(Real exports, Real imports)	Intra-industry trade index (Grubel-Lloyd).
static Real	predictExtendedGravity(TradeFlowAnalyzer.Country exporter, TradeFlowAnalyzer.Country importer, Real gravityConstant, double distanceExponent, boolean commonLanguage, boolean commonBorder, boolean tradeAgreement)	Extended gravity model with additional factors.
static Real	predictGravityModel(TradeFlowAnalyzer.Country exporter, TradeFlowAnalyzer.Country importer, Real gravityConstant, double distanceExponent)	Gravity model prediction for bilateral trade.
static Real	revealedComparativeAdvantage(Real countryProductExports, Real countryTotalExports, Real worldProductExports, Real worldTotalExports)	Revealed Comparative Advantage (Balassa Index).
static Real	termsOfTrade(Real exportPriceIndex, Real importPriceIndex)	Terms of trade.
static List<Map.Entry<String,Real>>	topTradingPartners(List<TradeFlowAnalyzer.TradeFlow> flows, String countryCode, int limit)	Finds top trading partners.
static Real	tradeOpenness(Real exports, Real imports, Real gdp)	Calculates trade openness (trade as % of GDP).

Methods inherited from class Object

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

Method Details

predictGravityModel

public static Real predictGravityModel(TradeFlowAnalyzer.Country exporter,
 TradeFlowAnalyzer.Country importer,
 Real gravityConstant,
 double distanceExponent)

Gravity model prediction for bilateral trade. Tij = G × (Yi × Yj) / Dij^β

Parameters:

exporter - Exporting country.

importer - Importing country.

gravityConstant - G - scaling constant.

distanceExponent - β - typically around 1.

Returns:

Predicted trade flow.

predictExtendedGravity

public static Real predictExtendedGravity(TradeFlowAnalyzer.Country exporter,
 TradeFlowAnalyzer.Country importer,
 Real gravityConstant,
 double distanceExponent,
 boolean commonLanguage,
 boolean commonBorder,
 boolean tradeAgreement)

Extended gravity model with additional factors.

tradeOpenness

public static Real tradeOpenness(Real exports,
 Real imports,
 Real gdp)

Calculates trade openness (trade as % of GDP).

revealedComparativeAdvantage

public static Real revealedComparativeAdvantage(Real countryProductExports,
 Real countryTotalExports,
 Real worldProductExports,
 Real worldTotalExports)

Revealed Comparative Advantage (Balassa Index). RCA = (Xij/Xi) / (Xwj/Xw)

exportConcentration

public static Real exportConcentration(Map<String,Real> exportsByProduct)

Herfindahl-Hirschman Index for export concentration.

grubelLloydIndex

public static Real grubelLloydIndex(Real exports,
 Real imports)

Intra-industry trade index (Grubel-Lloyd). GL = 1 - |X - M| / (X + M)

termsOfTrade

public static Real termsOfTrade(Real exportPriceIndex,
 Real importPriceIndex)

Terms of trade. ToT = Export Price Index / Import Price Index × 100

buildTradeMatrix

public static Map<String, Map<String,Real>> buildTradeMatrix(List<TradeFlowAnalyzer.TradeFlow> flows)

Analyzes bilateral trade matrix.

topTradingPartners

public static List<Map.Entry<String,Real>> topTradingPartners(List<TradeFlowAnalyzer.TradeFlow> flows,
 String countryCode,
 int limit)

Finds top trading partners.