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interface Agent {
id: string;
position: { x: number; y: number; };
update(environment: Environment): void;
}
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idïŒãšãŒãžã§ã³ãã®äžæã®èå¥åãpositionïŒç°å¢å ã®ãšãŒãžã§ã³ãã®çŸåšã®äœçœ®ãupdate(environment: Environment)ïŒçŸåšã®ç°å¢ã«åºã¥ããŠãšãŒãžã§ã³ãã®ç¶æ ãæŽæ°ããã¡ãœããã
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interface Environment {
width: number;
height: number;
getNeighbors(agent: Agent, radius: number): Agent[];
}
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widthïŒç°å¢ã®å¹ ãheightïŒç°å¢ã®é«ããgetNeighbors(agent: Agent, radius: number)ïŒæå®ãããååŸå ã®è¿é£ãšãŒãžã§ã³ãã®ãªã¹ããè¿ãã¡ãœããã
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interface Particle extends Agent {
velocity: { x: number; y: number; };
personalBestPosition: { x: number; y: number; };
personalBestFitness: number;
}
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velocityïŒç²åã®çŸåšã®é床ãpersonalBestPositionïŒç²åããããŸã§ã«éæããæè¯ã®äœçœ®ãpersonalBestFitnessïŒç²åã®æè¯ã®äœçœ®ã§ã®é©å床å€ã
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function fitness(position: { x: number; y: number; }): number {
return Math.sqrt(position.x * position.x + position.y * position.y);
}
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updateã¡ãœããã¯ãPSOã¢ã«ãŽãªãºã ã«åºã¥ããŠç²åã®äœçœ®ãšéåºŠãæŽæ°ããŸãã
class ParticleImpl implements Particle {
id: string;
position: { x: number; y: number; };
velocity: { x: number; y: number; };
personalBestPosition: { x: number; y: number; };
personalBestFitness: number;
constructor(id: string, position: { x: number; y: number; }) {
this.id = id;
this.position = position;
this.velocity = { x: 0, y: 0 };
this.personalBestPosition = { ...position };
this.personalBestFitness = fitness(position);
}
update(environment: Environment, globalBestPosition: { x: number; y: number; }): void {
const inertiaWeight = 0.7;
const cognitiveCoefficient = 1.4;
const socialCoefficient = 1.4;
// Update velocity
this.velocity.x = (inertiaWeight * this.velocity.x) +
(cognitiveCoefficient * Math.random() * (this.personalBestPosition.x - this.position.x)) +
(socialCoefficient * Math.random() * (globalBestPosition.x - this.position.x));
this.velocity.y = (inertiaWeight * this.velocity.y) +
(cognitiveCoefficient * Math.random() * (this.personalBestPosition.y - this.position.y)) +
(socialCoefficient * Math.random() * (globalBestPosition.y - this.position.y));
// Update position
this.position.x += this.velocity.x;
this.position.y += this.velocity.y;
// Update personal best
const currentFitness = fitness(this.position);
if (currentFitness < this.personalBestFitness) {
this.personalBestFitness = currentFitness;
this.personalBestPosition = { ...this.position };
}
}
}
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class EnvironmentImpl implements Environment {
width: number;
height: number;
particles: Particle[];
constructor(width: number, height: number, particles: Particle[]) {
this.width = width;
this.height = height;
this.particles = particles;
}
getNeighbors(agent: Agent, radius: number): Agent[] {
const neighbors: Agent[] = [];
for (const otherAgent of this.particles) {
if (otherAgent !== agent) {
const distance = Math.sqrt(
Math.pow(otherAgent.position.x - agent.position.x, 2) +
Math.pow(otherAgent.position.y - agent.position.y, 2)
);
if (distance <= radius) {
neighbors.push(otherAgent);
}
}
}
return neighbors;
}
}
ãã®ç°å¢ã¯ãç²åã远跡ããç¹å®ã®ååŸå ã®è¿åãèŠã€ããããã®ã¡ãœãããæäŸããŸããããè€éãªã·ããªãªã§ã¯ãç°å¢ã¯é害ç©ããªãœãŒã¹ããŸãã¯ãã®ä»ã®é¢é£æ©èœãã¢ãã«åã§ããŸãã
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function runSimulation(numParticles: number, iterations: number): void {
const particles: Particle[] = [];
for (let i = 0; i < numParticles; i++) {
const position = { x: Math.random() * 100, y: Math.random() * 100 };
particles.push(new ParticleImpl(i.toString(), position));
}
const environment = new EnvironmentImpl(100, 100, particles);
let globalBestPosition = particles[0].personalBestPosition;
let globalBestFitness = particles[0].personalBestFitness;
for (const particle of particles) {
if (particle.personalBestFitness < globalBestFitness) {
globalBestFitness = particle.personalBestFitness;
globalBestPosition = particle.personalBestPosition;
}
}
for (let i = 0; i < iterations; i++) {
for (const particle of particles) {
particle.update(environment, globalBestPosition);
if (particle.personalBestFitness < globalBestFitness) {
globalBestFitness = particle.personalBestFitness;
globalBestPosition = particle.personalBestPosition;
}
}
console.log(`Iteration ${i + 1}: Global Best Fitness = ${globalBestFitness}`);
}
}
runSimulation(50, 100);
ãã®ã³ãŒãã¯ãã©ã³ãã ãªäœçœ®ãæã€äžé£ã®ç²åãåæåããç°å¢ãäœæããæå®ãããååŸ©åæ°ã ãPSOã¢ã«ãŽãªãºã ãå®è¡ããŸãããŸããåå埩åŸã«ã°ããŒãã«ãªæè¯ã®é©å床ã远跡ããŠåºåããŸãã
TypeScriptã®åã·ã¹ãã ãæŽ»çšããŠå®å šæ§ãšæç¢ºããåäžããã
TypeScriptã®åã·ã¹ãã ã¯ãã¹ãŠã©ãŒã ã€ã³ããªãžã§ã³ã¹ã®å®è£ ã®å®å šæ§ãšæç¢ºããåäžãããããã«ããã«æŽ»çšã§ããŸããããšãã°ãããŸããŸãªã¿ã€ãã®ãšãŒãžã§ã³ããç°å¢ãããã³çžäºäœçšã«ç¹å®ã®åãå®çŸ©ã§ããŸãã
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interface ExplorerAgent extends Agent {
explore(): void;
}
interface ExploiterAgent extends Agent {
exploit(resource: Resource): void;
}
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function isExplorerAgent(agent: Agent): agent is ExplorerAgent {
return 'explore' in agent && typeof (agent as any).explore === 'function';
}
function processAgent(agent: Agent): void {
if (isExplorerAgent(agent)) {
agent.explore();
}
}
isExplorerAgent颿°ã¯ããšãŒãžã§ã³ããExplorerAgentã§ãããã©ããã確èªããã¿ã€ãã¬ãŒãã§ããããã§ããå ŽåãTypeScriptã¯ãifãããã¯å
ã®agent倿°ãExplorerAgentåã§ããããšãèªèããexploreã¡ãœãããå®å
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ãžã§ããªã¯ã¹ã䜿çšãããšãããŸããŸãªã¿ã€ãã®ããŒã¿ã§åäœã§ããåå©çšå¯èœãªã³ã³ããŒãã³ããäœæã§ããŸããããã¯ãããŸããŸãªã¿ã€ãã®ãšãŒãžã§ã³ããŸãã¯ç°å¢ã§åäœããå¿ èŠãããã¢ã«ãŽãªãºã ã«ç¹ã«åœ¹ç«ã¡ãŸããããšãã°ïŒ
interface Swarm {
agents: T[];
runIteration(environment: Environment): void;
}
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type Readonly = {
readonly [K in keyof T]: T[K];
};
interface Position {
x: number;
y: number;
}
type ReadonlyPosition = Readonly;
ãã®äŸã§ã¯ãReadonlyPositionã¯Positionãšåãããããã£ãæã€æ°ããåã§ããããã¹ãŠã®ããããã£ã¯èªã¿åãå°çšã§ãã
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type AgentType = T extends ExplorerAgent ? 'explorer' : 'exploiter';
ãã®åã¯ããšãŒãžã§ã³ããExplorerAgentã§ãããã©ããã«åºã¥ããŠã'explorer'ãŸãã¯'exploiter'ã®ããããã«è§£æ±ºãããåãšã€ãªã¢ã¹AgentTypeãå®çŸ©ããŸãã
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