Post value propagation

forum-network/src/classes/bench.js

@@ -8,8 +8,9 @@ import { Action } from './action.js';
  * Purpose: Keep track of reputation holders
  */
 export class Bench extends Actor {
-  constructor(name, scene) {
+  constructor(forum, name, scene) {
     super(name, scene);
+    this.forum = forum;
     this.validationPools = new Map();
     this.voters = new Map();
     this.reputations = new Reputations();
@@ -68,6 +69,7 @@ export class Bench extends Actor {
     const validationPoolNumber = this.validationPools.size + 1;
     const validationPool = new ValidationPool(
       this,
+      this.forum,
       {
         postId,
         fee,
@@ -78,7 +80,7 @@ export class Bench extends Actor {
         authorStake,
         anonymous,
       },
-      `pool${validationPoolNumber}`,
+      `Pool${validationPoolNumber}`,
       this.scene,
     );
     this.validationPools.set(validationPool.id, validationPool);

forum-network/src/classes/business.js

@@ -25,7 +25,7 @@ export class Business extends Actor {
 
     this.actions = {
       assignWork: new Action('assign work', scene),
-      addPost: new Action('add post', scene),
+      submitPost: new Action('submit post', scene),
       initiateValidationPool: new Action('initiate validation pool', scene),
     };
   }
@@ -54,7 +54,7 @@ export class Business extends Actor {
       requestId,
       workEvidence,
     });
-    this.actions.addPost.log(this, this.forum);
+    this.actions.submitPost.log(this, this.forum);
     await this.forum.addPost(reputationPublicKey, post);
 
     // Initiate a validation pool for this work evidence.

forum-network/src/classes/forum.js

@@ -12,6 +12,16 @@ class Post extends Actor {
     this.id = postContent.id ?? CryptoUtil.randomUUID();
     this.authorId = authorId;
     this.value = 0;
+    this.citations = postContent.citations;
+  }
+
+  setPostValue(value) {
+    this.setValue('value', value);
+    this.value = value;
+  }
+
+  getPostValue() {
+    return this.value;
   }
 }
 
@@ -19,9 +29,8 @@ class Post extends Actor {
  * Purpose: Maintain a directed, acyclic, weighted graph of posts referencing other posts
  */
 export class Forum extends Actor {
-  constructor(bench, name, scene) {
+  constructor(name, scene) {
     super(name, scene);
-    this.bench = bench;
     this.posts = new Graph();
     this.actions = {
       addPost: new Action('add post', scene),
@@ -46,11 +55,6 @@ export class Forum extends Actor {
     return this.posts.getVertices();
   }
 
-  onValidate({ tokensMinted }) {
-    const initialValue = params.initialPostValueFunction({ tokensMinted });
-    this.distributeReputation(this, initialValue);
-  }
-
   distributeReputation(post, amount, depth = 0) {
     console.log('distributeReputation', { post, amount, depth });
     // Add the given value to the current post

forum-network/src/classes/graph.js

@@ -45,7 +45,6 @@ export class Graph {
       throw new Error(`Vertex already exists with id: ${id}`);
     }
     const vertex = new Vertex(data);
-    console.log('addVertex', vertex);
     this.vertices.set(id, vertex);
     return this;
   }
@@ -77,7 +76,6 @@ export class Graph {
   }
 
   addEdge(label, from, to, data) {
-    console.log('addEdge', { from, to });
     if (this.getEdge(label, from, to)) {
       throw new Error(`Edge ${label} from ${from} to ${to} already exists`);
     }

forum-network/src/classes/params.js

@@ -19,7 +19,7 @@ const params = {
   lockingTimeExponent: 0, // c11
 
   /* Forum parameters */
-  initialPostValueFunction: ({ tokensMinted }) => tokensMinted, // q1
+  initialPostValue: () => 1, // q1
   citationFraction: 0.3, // q2
 };
 

forum-network/src/classes/validation-pool.js

@@ -16,6 +16,7 @@ const ValidationPoolStates = Object.freeze({
 export class ValidationPool extends Actor {
   constructor(
     bench,
+    forum,
     {
       postId,
       signingPublicKey,
@@ -52,6 +53,7 @@ export class ValidationPool extends Actor {
         }]; got ${duration}`,
       );
     }
+    this.forum = forum;
     this.postId = postId;
     this.state = ValidationPoolStates.OPEN;
     this.setStatus('Open');
@@ -66,6 +68,7 @@ export class ValidationPool extends Actor {
     this.duration = duration;
     this.tokenLossRatio = tokenLossRatio;
     this.contentiousDebate = contentiousDebate;
+    this.tokensMinted = fee * params.mintingRatio;
     this.tokens = {
       for: fee * params.mintingRatio * params.stakeForWin,
       against: fee * params.mintingRatio * (1 - params.stakeForWin),
@@ -93,7 +96,6 @@ export class ValidationPool extends Actor {
     }
     this.votes.set(signingPublicKey, vote);
     if (!anonymous) {
-      console.log('castVote: revealing identity since this is not an anonymous vote');
       await this.revealIdentity(signingPublicKey, signingPublicKey);
     }
   }
@@ -200,20 +202,33 @@ export class ValidationPool extends Actor {
     return result;
   }
 
-  distributeTokens(result) {
-    let authorReputationPublicKey;
-    if (this.anonymous) {
-      const author = this.voters.get(this.authorSigningPublicKey);
-      authorReputationPublicKey = author.reputationPublicKey;
-    } else {
-      authorReputationPublicKey = this.authorSigningPublicKey;
+  propagateValue(nextPost, increment) {
+    const postValue = nextPost.getPostValue();
+    nextPost.setPostValue(postValue + increment);
+    for (const { postId: citedPostId, weight } of nextPost.citations) {
+      console.log('citedPostId', citedPostId);
+      const citedPost = this.forum.getPost(citedPostId);
+      this.propagateValue(citedPost, weight * increment);
     }
-    // Reward the author
-    // TODO: If the vote fails, distribute tokens.author among winning voters
+  }
+
+  distributeTokens(result) {
+    const authorReputationPublicKey = this.anonymous
+      ? this.voters.get(this.authorSigningPublicKey).reputationPublicKey
+      : this.authorSigningPublicKey;
+
+    // TODO: Take tokenLossRatio into account
+
     if (result === true) {
-      this.bench.reputations.addTokens(authorReputationPublicKey, this.tokens.for);
+      // Take initialValue into account
+      const initialPostValue = params.initialPostValue() * this.tokensMinted;
+      const tokensForAuthor = initialPostValue * params.stakeForWin;
+      const tokensForWinners = initialPostValue * (1 - params.stakeForWin);
+
+      // Reward the author
+      this.bench.reputations.addTokens(authorReputationPublicKey, tokensForAuthor);
+
       // Reward the vote winners, in proportion to their stakes
-      const tokensForWinners = this.tokens.against;
       const winningVotes = this.listVotes(result);
       const totalStakes = Array.from(winningVotes.values())
         .map(({ stake }) => stake)
@@ -226,6 +241,15 @@ export class ValidationPool extends Actor {
         const reward = (tokensForWinners * stake) / totalStakes;
         this.bench.reputations.addTokens(reputationPublicKey, reward);
       }
+
+      // Update the forum post to set its (initial) value
+      const post = this.forum.getPost(this.postId);
+
+      // Recursively update values of referenced posts
+      this.propagateValue(post, initialPostValue);
+    } else {
+      // TODO: If the vote fails, distribute tokens.author among winning voters.
+      throw new Error("Vote did not pass -- we don't currently handle that!");
     }
   }
 }

forum-network/src/tests/availability.html

@@ -38,8 +38,8 @@
   const expert1 = await newExpert();
   const expert2 = await newExpert();
   await newExpert();
-  const bench = (window.bench = new Bench("Bench", scene));
-  const forum = (window.forum = new Forum(bench, "Forum", scene));
+  const forum = (window.forum = new Forum("Forum", scene));
+  const bench = (window.bench = new Bench(forum, "Bench", scene));
   const availability = (window.bench = new Availability(
     bench,
     "Availability",

forum-network/src/tests/forum.html

@@ -39,8 +39,8 @@
   const expert1 = await newExpert();
   const expert2 = await newExpert();
   await newExpert();
-  const bench = (window.bench = new Bench("Bench", scene));
-  const forum = (window.forum = new Forum(bench, "Forum", scene));
+  const forum = (window.forum = new Forum("Forum", scene));
+  const bench = (window.bench = new Bench(forum, "Bench", scene));
 
   const updateDisplayValues = async () => {
     for (const expert of experts) {