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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
$ w9 _" T' i2 _; Y  Xto do-business
0 _  N1 F+ x# B rt random 360
1 W1 P) d9 q! C. i fd 1+ A( d0 w+ P0 n# k6 Z
ifelse(other turtles-here != nobody)[0 V  ?. P8 t2 `' b# {9 u1 N
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.5 T7 q1 a4 z" {) `" [3 S0 M6 _
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
, n3 T2 ?+ i: L; ^" N/ V   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer5 E- K3 {% C  W
   set [trade-record-one-len] of self length [trade-record-one] of self) [; `7 D3 H1 u9 D
   set trade-record-current( list (timer) (random money-upper-limit))2 U, q1 k6 x3 J+ W- c, ]* s
6 c7 a4 L* E5 |& `& T  K
问题的提示如下:$ ^  H5 F) Q# x& ^" w

0 [  ~9 f" j/ O  }# l7 \error while turtle 50 running OF in procedure DO-BUSINESS5 X$ s- z5 |2 |; p% a0 ^
  called by procedure GO; z5 e9 N- g3 @* w  U. Z
OF expected input to be a turtle agentset or turtle but got NOBODY instead.6 a$ ^0 n! Z# D, x5 Q2 a
(halted running of go)
8 r5 w; l4 x6 t0 i
. g+ ~: x& u! D! [这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~" g8 w( B" |! t5 q) N) o! I
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教; ?, m1 z# Z3 c$ J( ^! e! O5 x" k
globals[9 [* B- I" X# W# L* J$ v! z6 ^
xmax- p* d. _7 v# X0 ~, k8 ?2 M% \
ymax
- c( j0 \. X' X( ]) q% nglobal-reputation-list
* U! |* g5 n! t7 h8 g1 e/ r
5 y# d* M2 k- V. o  e8 e1 N;;
每一个turtle的全局声誉都存在此LIST
# H& l7 Y  n9 r+ K- U2 o1 W! i1 f& }1 wcredibility-list
6 [  C) J* O. P, j0 c: `;;
每一个turtle的评价可信度
2 }/ l+ v* I1 U* y$ Vhonest-service
" p8 N9 y7 F# v2 Ounhonest-service( k# d$ A5 {3 T& A
oscillation
; B7 m- N+ z6 F" Brand-dynamic- C% C) S% Q, z5 Z; `% f1 f4 X
]. {$ H7 i/ ]) d* d
% l7 Z( M+ k; ]! W
turtles-own[
9 [: y1 c( V$ S$ Itrade-record-all: |5 w; q( n+ Q# W" d
;;a list of lists,
trade-record-one组成& Y3 D6 L$ `5 S$ g
trade-record-one
+ b& C/ S; h5 `; v' m+ P;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
9 Z! ]* Q8 L8 A  @
& f) ?4 W6 R# J2 t; [9 q;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
1 p% }* m2 ^5 P$ T3 L# J9 Ktrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
# w, |8 r) t8 x, t+ L" ocredibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
: d5 |) E# ]8 C# J2 }! m! `: kneighbor-total
- q  S. |+ |! e! @8 e;;
记录该turtle的邻居节点的数目
3 X$ O3 u! E" u1 C2 M5 t* Ftrade-time& [+ K- @2 H+ E) o. e
;;
当前发生交易的turtle的交易时间
+ x) W" I, r7 Y2 rappraise-give0 N# N( Q! o+ S" ^' c# ^
;;
当前发生交易时给出的评价3 T  k' Z) }! G# m
appraise-receive
& m5 w$ d2 X  j/ N, E( F7 E" }0 A;;
当前发生交易时收到的评价. o, R- r5 W! v5 ~7 ?
appraise-time, m& H0 c+ d4 U8 `  Q) P1 h3 S
;;
当前发生交易时的评价时间
+ m, L" K, H+ |$ n+ B. Blocal-reputation-now;;此次交易后相对于对方turtle的局部声誉3 Q5 \) S- L# R% u4 c7 w4 }$ c# K
trade-times-total9 i. X7 W6 Q1 a
;;
与当前turtle的交易总次数
8 T7 {! _6 m+ V+ utrade-money-total
! D6 D% [8 Q* l! e* I# c  W- U;;
与当前turtle的交易总金额
( k# |6 d+ J8 O5 _/ I1 Llocal-reputation
3 G& G4 X; U7 F9 {/ @global-reputation
8 c7 l9 y2 A  h  bcredibility5 ?3 E8 Y. I2 y4 F$ T* c7 H
;;
评价可信度,每次交易后都需要更新3 [! i9 ]2 N# ~) |
credibility-all1 i5 c6 p$ P1 L/ i8 f; F. P
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
4 Z. I5 q' W2 d8 ?: p) ~$ u' l4 \4 g9 X  t" K
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5) N! u, R9 o  N9 c) `7 B  `1 H
credibility-one
( C. z  I, j/ O;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people0 L# U- X: X6 [
global-proportion) w1 R9 m% B1 T0 ~' v7 x2 C- n
customer
) d4 n* s+ ?+ s# U: Hcustomer-no" c0 E* [6 e' ]0 R
trust-ok4 ^& n6 V9 t% E9 ~* j" M1 d
trade-record-one-len;;trade-record-one的长度
6 [# M& a6 p$ o& n]- a2 `, S7 |, t0 K' n& B. s
. [8 i2 L7 I" f7 [, A
;;setup procedure
; ~' I! m* z2 R2 R$ Z0 _! x6 ~! `, h' L! }
to setup" U9 D5 s' l  h* E) ^4 q

+ E5 f& V5 B: L3 v4 U5 J/ o+ V( Xca
6 t2 \: y* l8 Q

7 M7 |& D1 h# A5 Zinitialize-settings
! O3 j5 c8 x  U) q- U1 d

* N  O: d1 j/ J4 N7 p8 ]$ Mcrt people [setup-turtles]
, }1 |( Z% U, x3 G6 d
# w7 G0 h* @" S: \: k# M
reset-timer
. ?- e# Q. Q* Q. Y- G- m& Y
* s. u0 d* D9 Z! }! U
poll-class
6 [( z$ {  b7 Z% O4 F

& ^+ w8 {' f+ i+ esetup-plots

/ z6 ?; U3 H' V  G
8 N2 R$ w/ u6 O4 n8 Ndo-plots
& c  B! I. d/ {1 I
end7 n/ b7 W* u+ ]' m

3 |9 }- I' C9 v7 \& m1 W6 f) @2 ?to initialize-settings
9 f8 S. g6 H' W  F, ^2 X
  @# t: \/ W2 z% i: sset global-reputation-list []
3 X0 d# a9 N" k' x4 N, i0 z
8 I3 J: ~  d% n$ y. i1 k# l
set credibility-list n-values people [0.5]
" N" q! t2 d! J" O

& M# `! w8 d! x6 sset honest-service 0
/ c7 W6 i* i+ k3 e/ Z, I

$ e) @4 r6 m: [set unhonest-service 0
  s  `: F( {4 }1 l* k8 O$ y8 m

- Q+ X: j7 n+ [5 zset oscillation 0

) ?) \5 `2 y' A! C# h$ w! ^" l4 b0 `1 G3 K! i, G$ ?9 v
set rand-dynamic 0

, X  h" K( }, r( s1 ]* M7 aend! Z. c- F; S  P: }
) Y' ]- Y! B" h; [5 l
to setup-turtles
+ x7 {' w' E0 W  d; x( hset shape "person"
4 L% e3 H% `3 s+ Q$ W4 Q4 }setxy random-xcor random-ycor
  v& O2 V6 ]) @, b% iset trade-record-one []( g2 ]& j& `% p5 d( n2 ^! S; m

+ h( h8 Q( \9 N6 S% {# Wset trade-record-all n-values people [(list (? + 1) 0 0)]
* v% I" M% v+ A( U3 V

( n( ]9 |: j* fset trade-record-current []6 o7 h1 _2 J; K6 W% m9 X
set credibility-receive []# m# L; t7 f$ I& {
set local-reputation 0.5
) s) A1 g! K  [1 Q$ V: Kset neighbor-total 0/ r" Q6 ]" w1 T# r" n- x& [4 d! V
set trade-times-total 0
7 N* C1 }; z- ?set trade-money-total 0
& w# ?, Z) r5 L" o( |set customer nobody
( m  |8 i6 \9 v* o+ y5 vset credibility-all n-values people [creat-credibility]- x/ V3 d# d* N& e4 g  t* g
set credibility n-values people [-1], H! U5 l  F: N# w. |" }% x8 W7 M2 H
get-color
+ o* T) m% E. G, q
  u5 I0 r, S$ P: e4 r# @
end5 }+ W' F: T, L* X
' X6 v& j+ ^/ c
to-report creat-credibility0 k: j7 `" h, t% Z% j
report n-values people [0.5]; g& g8 T4 ~8 u: {6 `. a
end% _0 K7 W+ B4 Y6 m

% l; h* p; P8 b+ K) Tto setup-plots3 u1 R: F4 z  S
% X6 u6 @( h  X7 K( F
set xmax 30

  ~% i/ R5 ~3 c3 \/ N. F) [! t5 t' H( w# g9 ?6 ^0 B& D
set ymax 1.0

8 i* l$ c3 L  y1 [( P* ]0 o; G  d- \9 ^( _* W
clear-all-plots

9 t% M* O( a, g3 ~: y' e# V
/ N6 o2 {1 U" i  I6 [setup-plot1
7 d* a3 B# @8 g8 L+ U" U

2 C) ^" W. N1 _' N* osetup-plot2

: E. {; N( q2 W7 P$ @' F0 a6 Y, X) t8 J, n) W) R$ E
setup-plot3
; q/ B" x3 u5 p; x8 c( S
end
# Z3 ?* `* f, C- \: L
. s  H" D6 ~& k;;run time procedures
( L  G+ a. E+ j! J& L! {" @
* v7 V9 @& L9 Z0 Y' z" j: rto go
% W: Z4 @, y, }+ P8 i9 B3 B/ K9 K: o  g8 u  b# e* f3 l" ?7 u" t; @
ask turtles [do-business]

1 D4 i% d. _  Y' `end& \- i8 _$ J4 h
$ J, I8 r8 q, _+ T" g! @; C. t
to do-business , U' `$ g+ m& l0 `8 l3 p5 @
2 s/ M- z- _5 z  h, c. W

. D; O! O1 Q( K, a$ I; n  Z3 Drt random 360
9 a2 g- \# B' H1 ~# T0 k

4 N4 e7 w- ^  E6 Rfd 1

* X: }$ [3 v( @: G  R, l8 I/ x7 |3 R& z3 Y+ C6 l0 w; N0 @
ifelse(other turtles-here != nobody)[

2 k# y5 z6 _. O/ y3 l/ C
# X$ d9 R* _2 j) o5 j5 W3 y. [0 Fset customer one-of other turtles-here
4 I1 _8 Y2 g* T, q+ t2 T+ o# Y

- t* A& R8 {  f5 }& J# ~;; set [customer] of customer myself
8 x2 a( B, A/ h

/ I4 U0 l: s' }- P9 iset [trade-record-one] of self item (([who] of customer) - 1)9 U% v2 T- u. M' g5 i3 n
[trade-record-all]of self
6 d. C( O8 [7 |7 J2 ^;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
% h. q" \) z- M' R5 R" f
3 ^$ i0 u  D- O$ l/ }
set [trade-record-one] of customer item (([who] of self) - 1)) ^( ^/ K1 D. c" B4 M+ F$ k
[trade-record-all]of customer
( a9 A* [( u  h! c) l

7 A; }' v, ]( U* [set [trade-record-one-len] of self length [trade-record-one] of self

6 h0 N5 i3 V9 [- c+ o2 X7 u, W* W" ^% e+ T: v7 e' s0 g; j, s. t
set trade-record-current( list (timer) (random money-upper-limit))

2 u; U* o) {9 _6 |* t2 i; m+ V  W6 J! f/ E( e5 s
ask self [do-trust]: K  H+ `& b( S
;;
先求ij的信任度
, v1 {  l* m/ o6 y/ q8 y: `
" }; v7 y/ d0 }& z- g# `if ([trust-ok] of self)
0 B, ~- p- J$ p( {;;
根据ij的信任度来决定是否与j进行交易[
5 T, b' ]" a. T, mask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
  M( p: f  r9 P3 q
+ z/ E3 k* F3 J% p0 {5 C; K' \  j[
, |8 v/ \9 X9 T1 v6 m4 O* b$ g

7 J- B: E% J3 \$ @; Bdo-trade

5 L: z5 }  p  d) b' z+ d
; n/ r; J0 D  H* I( S; {' T# cupdate-credibility-ijl

( W7 E6 N% _* X& F( w8 T; y* @# Q( a" V; h: |
update-credibility-list
  o- Z, Z+ u' W( a% b; c
! L- ]% |+ t6 }* W- p' b6 N$ a  A
: w/ n, P7 H: {" `
update-global-reputation-list

: L. R- N& l% \+ Z  O
# K; f& n! m! ?3 ~% zpoll-class
* o& C+ }) X+ U* Y

+ m' R. W! P2 I4 Uget-color

2 L  |- b& S3 d% @8 t4 H9 ?6 `/ U
; o- F- k0 t* s; Y) f]]
, W& n6 e; k% X
; z& e: j( ]3 E;;
如果所得的信任度满足条件,则进行交易
% d0 V1 C! X1 }* F+ q2 C' Y  e3 V( ~# q2 l
[

  A6 L- H: j, S7 s8 [8 |
$ K  t& s, O& l1 Q; N# C; P  qrt random 360

: D- b( [9 t2 y. [, I" G7 x; B+ x9 i. M7 T+ e, m
fd 1

/ a& U3 V) c. d& q
( \0 ~! `( ?( F+ r' i]
0 k1 o" d) A) |

+ ^; P6 |3 O  k# A5 mend

# s3 ^3 D  d' ]% a( a! C, D+ l4 u9 `! Z+ e/ J3 M
to do-trust 2 a2 H- v) R! b1 R5 e! F6 L6 Z& G
set trust-ok False1 E7 z& T, B/ F1 `' [. P2 V/ t
8 B: C. \* `8 e4 `, Z

- ]$ R, }* \1 C: l2 H+ ^; {let max-trade-times 0& G9 ~% S8 K) k! H) }
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
0 R+ a. \! I# J* a. [, K6 Ulet max-trade-money 00 t2 E5 U; G, X3 y
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- H  o6 s7 |$ Y& Z- q/ A/ m4 blet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
9 z: c+ N6 D& S# c- }+ S. E  r$ r. W# Z+ t* G- O2 z

0 U0 _# [  S) L2 H; b% Aget-global-proportion
0 b; n) ^% h- j- X; Slet trust-value, c, B( }2 q' c# s0 \9 ]9 \
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

6 K3 r. T' E, U4 ^/ b  f% iif(trust-value > trade-trust-value)6 }1 V: E8 ^# C5 A
[set trust-ok true]7 R+ b3 o$ d7 S& V. V8 P$ G- R
end
9 `2 w$ w3 O5 }: T# v
/ w" d2 c8 ~1 g5 l- rto get-global-proportion
8 |6 T# R  Y$ W  t0 C* w# yifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
/ T0 X: e/ i5 i% }4 {6 A2 L[set global-proportion 0]3 M3 I  e, n# v. [- i4 a$ H
[let i 0
8 V5 [$ m6 d- ^let sum-money 0
/ a2 N1 G. m% Ywhile[ i < people]* b  N8 L9 ^: J$ T/ X/ B2 t6 N
[# s# ]# f; E2 z% g
if( length (item i
3 |( R) v- l9 c5 ]( O8 L[trade-record-all] of customer) > 3 )
1 P% e9 D; y8 g! s+ I
[
6 K9 f' W. J, m$ xset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
8 S: N- E" ]# P]
+ ^/ }8 z4 R. w! U]0 \$ i" G6 ^& \9 o8 M# o
let j 0
. ^0 j" ]" {) v# klet note 0; U' }# L. i% h8 g
while[ j < people]
5 ^3 a3 {' `6 `5 e$ p6 g3 N7 c[8 f2 S4 o! ~# u0 ~# A% k
if( length (item i
& P: L% n/ ~& R! k4 ?+ S( i* r' M[trade-record-all] of customer) > 3 )
4 G0 u* p# `# I$ y2 ?) I+ `, t
[
3 A: y6 S' o) a1 U1 X+ t* S+ Y& Difelse(item ([who]of myself - 1) [credibility] of turtle j != -1)# F& \; n9 u5 J( d$ r9 \2 e
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]. g% N) g7 h0 S
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& [& W2 i0 c+ k]9 Q& n) W* p3 H$ S  U3 ]
]4 N& A# ]+ T( |
set global-proportion note
/ W0 M* r4 c. W. X% L& `]: ^7 m, X5 G8 D' t! Y% h
end/ f$ s9 f9 G) Q% M8 D% ~2 h) ~* a
3 n2 \: a1 H# o1 i  a
to do-trade; `- ^! Y. o7 z
;;
这个过程实际上是给双方作出评价的过程
& \/ l; O8 H; s! Q9 K) dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( }: N6 d) ]$ j" s3 |set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ V- j/ x8 r4 P. h
set trade-record-current lput(timer) trade-record-current
# \9 z- H% p3 V! K- S$ K;;
评价时间* J2 G; e7 i) A; Q- O# z) L$ p
ask myself [; p# g. C$ [- M. [
update-local-reputation" e. \: c0 T$ Q% L" f# J
set trade-record-current lput([local-reputation] of myself) trade-record-current0 F9 E( i8 f' j
]
+ R& x- l2 Z! U9 Mset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
! K/ O7 F+ q, T3 Y( D;;
将此次交易的记录加入到trade-record-one
- f; d: p0 m+ y. v0 n4 v" ^set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ m8 o" P  k5 J- D
let note (item 2 trade-record-current )
1 N6 {" G% O4 G: S5 b5 Dset trade-record-current
4 h# Y! k0 n) H9 T9 {2 ]6 x(replace-item 2 trade-record-current (item 3 trade-record-current))

1 @# Z, H( M' R7 \. z) Hset trade-record-current
4 [/ _3 a6 T; L* G(replace-item 3 trade-record-current note)
3 L4 H7 C6 D) U
) ~1 F5 s; T. O

- w, u0 Z( r" \- A  Gask customer [9 _& n9 A( Z6 G
update-local-reputation' k  X# E4 g0 X
set trade-record-current
% |  ^( m2 ^! s: Z7 }: r(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

2 p9 c$ u4 d# U( X8 K" W  _]
7 f2 g' O+ t# ?& r6 h1 b# z/ Z  Y% C; P/ J, w( y, t0 M

* t) u5 }& r+ R4 T+ z9 i4 l/ fset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
# O' q- S( b- [" I' X. ^0 ]6 L

' j. ^9 I# T% U" Z1 Aset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
9 a7 y4 a1 t% P7 P/ q+ b;;
将此次交易的记录加入到customertrade-record-all
8 l. @  v4 p9 @0 k  }$ wend
+ [' P3 ]- A6 k5 a! k( U! T' \( y" R% l' h) N  L8 `
to update-local-reputation9 ]9 H. F8 Q  T+ k0 l& r7 L3 ^
set [trade-record-one-len] of myself length [trade-record-one] of myself; e. M% |% z$ h3 Z! b

  Y  h" A& o& u+ F7 X7 \0 N6 J* `/ G2 r6 m# g& W0 X
;;if [trade-record-one-len] of myself > 3

7 ~! X' o2 _: t( v2 \, D, u1 uupdate-neighbor-total
5 h8 q( ~, e" z$ T, c;;
更新邻居节点的数目,在此进行* n; l7 L. E7 P% V
let i 3
4 o6 d2 s: Y, D1 @& Nlet sum-time 0! O* a' g" K( ^8 B( \% ]6 `2 H! V
while[i < [trade-record-one-len] of myself]# L6 Q. m7 m* I6 ?- V
[
# e7 T* ~4 Z; u3 `# W2 fset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
' K- H! R, G6 l- `set i
7 g/ B: k7 z4 U' X( i + 1)
& _9 V" `2 b1 _4 g5 J/ _
]7 E$ V' W8 I( C. h
let j 3
! n4 y6 S1 G+ \let sum-money 0, e+ @9 c5 W  F: @/ e# s/ P
while[j < [trade-record-one-len] of myself]
; M) s8 e& d; j% \: P4 u[- E) z/ M- _9 N: {/ J. [0 g* Z
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)' a+ S# c6 o, c$ M- h# n, q1 Z8 y. T
set j1 }5 d& W* I* N7 b2 c# ?9 l3 Q
( j + 1)

7 H* V) y( E% I. E* B]0 p0 j! o( x" W4 C/ A+ I7 ~9 O* T
let k 3
0 Z, a3 m7 y/ N1 I4 c- P1 K: \, g. Llet power 0
) T5 q3 j/ Z' C$ C0 F4 Rlet local 0
, G( g4 `. V' ]8 H- e0 A  B0 hwhile [k <[trade-record-one-len] of myself]  y% `! m$ a" W5 f/ _% \# B
[
1 l( V7 ^1 w" L+ P: X- O1 ]set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) - w8 m4 Y. E" t/ S& M9 x
set k (k + 1)# Q3 U; _9 R  K% ?3 j4 L4 b+ M) P
]. `, f" E. v7 {) I* R1 p
set [local-reputation] of myself (local)" r7 b+ ~" J3 x8 D
end
$ ^; k/ `; Q9 [9 B1 k; Z1 I9 P4 A( C$ t
to update-neighbor-total
0 \$ }( h: o. k$ P( a0 ]0 q8 ]' m6 k# O7 B8 s7 W
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
' L2 `  w' m* l% n
/ Q# e1 \9 m- |8 m- @9 U

! n" S. F# |2 `4 m. Pend! u. P% u& W7 a; r9 h" c# ]
9 ]& Y; f2 H; `
to update-credibility-ijl
: \( v& q! U1 V. W8 a4 |; M1 @5 C: G! ^# s- u
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。/ q) r" `: T5 ^, J# ~" K: y, Q
let l 0
0 x8 }5 ~  z+ Z4 s' y) xwhile[ l < people ]' i: O9 p, F8 E
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
4 \/ ^. U8 Z* k6 _$ y[2 a! j' G: f  D2 {5 Q
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)4 n) F6 q: H9 d
if (trade-record-one-j-l-len > 3)* l6 l( _) s- F3 O. a; P' L+ Y
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one0 O% I! P, V9 b* k
let i 3$ L$ c7 N5 f$ a8 m
let sum-time 0
$ |4 U3 Y( L' n- W, b6 `* _3 z4 `, xwhile[i < trade-record-one-len]
- W3 J1 Y5 h+ h6 N( z. o0 D[  B7 v5 h# B2 |: n( d2 C2 ]6 R
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )" Y( q4 }: v0 a+ ]4 Y. U- m
set i$ L9 n, C+ j' r/ d5 K/ @
( i + 1)

" G: ?8 N" k; m& y]
% E/ m* W# K" q  N! Z7 klet credibility-i-j-l 0
  ^* w- x8 h1 ^# b  I# B;;i
评价(jjl的评价)
  f6 K/ k2 s  m* |+ u' Glet j 3, r( {5 W+ n; F% J; A
let k 4
/ C. v7 u- p+ _- T! Awhile[j < trade-record-one-len]
6 O; X6 G: ~6 m2 A, N/ A. p8 h[
- S+ u, v2 S& J# e* _+ iwhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉' e) J+ s' \6 J0 y
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
4 Z: U9 _: c( \: Kset j
+ _. q) e' g1 I5 A0 @( j + 1)

( z, R( Z7 p6 {* ~5 Q: ]]
3 ^; y3 J  w! @set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))3 m  }0 @9 `" C; Y) }# l& ~' B

5 K8 J* i; z( C7 l4 l% ^

0 B1 v$ k/ Y4 f8 [5 o4 O- @3 n, Klet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
  U8 l% p0 v9 M7 E& m;;
及时更新il的评价质量的评价
# S' p1 z- E2 m8 c. Cset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]" E8 [, @) u4 P3 J% \2 c# b6 e
set l (l + 1)% `) i0 r' r/ F4 S' b' G
]
% D1 W! |! k8 v9 Eend* t. [' v  ~" I3 G# N; P
* p5 y3 S: `7 ~7 L) c. ~
to update-credibility-list  ]" N, M& Z! H" X/ x
let i 0
4 V. _' s4 n3 {6 o5 t7 Iwhile[i < people]
) i" D) G" b( C" v% v5 I[
8 j; I4 o. {% m7 Y8 n+ z9 qlet j 0
2 l9 y, T# }5 C: R& b3 ]0 e  Hlet note 0  P; d$ h: {4 ~% Y$ J# H% B
let k 0
6 E8 i5 p: M' [$ [/ @;;
计作出过评价的邻居节点的数目% R' D7 O" }- Z3 h! h: [1 o' D
while[j < people]% x9 j. z$ ]! `1 _, h  T* h
[- d8 O! w1 N2 a
if (item j( [credibility] of turtle (i + 1)) != -1)" R$ W7 U1 Y) U" k  J8 X
;;
判断是否给本turtle的评价质量做出过评价的节点
& h5 V3 ]6 z( ~' J4 [- V[set note (note + item j ([credibility]of turtle (i + 1)))
; S6 r; P/ q* q6 z7 V; p8 W8 H;;*(exp (-(people - 2)))/(people - 2))]
% G6 L6 O3 ?. L# f
set k (k + 1)
. o; E- ?. S& H- f: c5 ^]' ]' ~" h; M  m
set j (j + 1)
) n. Q6 j$ e, f( Y& e& Y  D" P]2 u) t" o5 t- C8 v4 U) k' ~
set note (note *(exp (- (1 / k)))/ k): @2 U" W3 H! ~7 E
set credibility-list (replace-item i credibility-list note)4 @) t1 Z4 N- E- X6 A
set i (i + 1)* t9 D  I, P: a, R! c! m
]
6 F* D! N7 j" W/ u; Cend
3 T/ f) ~' U4 s" Y. T: ]: m+ C5 X6 N6 Z% u
to update-global-reputation-list- _' o. v% |" R- P7 _
let j 0
# l' w% ^6 C3 w3 q2 Hwhile[j < people]
/ L, m4 Z2 m% \" J+ P! `[
, k9 c4 _; k5 rlet new 06 D4 k& o6 V  B" x+ B
;;
暂存新的一个全局声誉
1 A) P9 Y! i0 }let i 0
& }! X1 b+ s1 i% b' wlet sum-money 0; Z* Z9 h! p1 g" o/ t
let credibility-money 0* T- o1 D# z, d3 t2 P6 G
while [i < people]0 K7 k* y" M/ f" M' g% L& X
[) {( n* o6 k* q! H4 j
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))): R( U" F% m6 r8 t1 E0 n5 S3 N: r
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& A+ ]$ M% ?; Fset i (i + 1)  j; c; h: c: c% X# V2 [& Z, {
]
( `- S! D: F% e' H9 V0 @! Blet k 0- u9 ~* Q: `0 X. {. U5 v- ?
let new1 0
8 H& d8 S% O( Swhile [k < people]
6 S5 C2 M8 B7 n: E[
# S/ w: f/ j/ Q7 i0 Lset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
& F0 P* K: n; {5 `$ t( y# t  N' ^set k (k + 1)' `: q  b6 Q( Z: [7 z
]) Z0 K1 Q7 Q# z5 ^4 f; M) N6 O
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)   V6 G# @+ A/ t) n6 s6 u
set global-reputation-list (replace-item j global-reputation-list new). V9 h# Q9 R% t1 I
set j (j + 1)% O! y  E- q4 e9 a2 G1 y
]
" T; j8 s) {$ t% Qend
4 r2 p% i- Z9 _
- w6 ]& ~: j: ?5 I
7 E! Z( d5 J$ ?1 k/ k5 T) H9 z, O+ `0 w/ W9 ?$ g6 n9 @* w
to get-color' M" Q4 t3 d7 q$ c9 \8 {4 W
' T$ c$ a- c  V" b
set color blue

+ Y9 ^8 Y) S) Jend( o2 h0 X; m: p& v
0 f# V# P) L$ ~  g$ V- {- j1 D4 H
to poll-class
4 F9 F4 D) F& _2 }" [7 y5 h; wend
0 V5 t8 X: p. H$ g8 V9 u3 _, B+ U) d. S- W3 M9 r# u
to setup-plot17 k& o8 y4 x3 c3 I# N

- T4 C, l7 T: `5 t; s0 Bset-current-plot "Trends-of-Local-reputation"

1 P9 T1 i( M+ z# c$ x
! A5 t) Q5 d3 |1 ~! D- C5 x& Nset-plot-x-range 0 xmax
. e, R+ N( l3 N0 y2 H8 J& d

0 L( Z0 t, O* M& }1 \7 Q2 O* dset-plot-y-range 0.0 ymax

4 N, |, d9 K& ^8 F. Uend6 W% W/ _; _2 |: o) W8 k: X

0 d  X5 X9 X; C" f2 U/ u3 J+ d3 vto setup-plot2
$ E, T' R8 n' C  p
0 e; e2 x% c4 v1 {set-current-plot "Trends-of-global-reputation"

. J% y. w- a2 s, Z8 F+ R9 c
4 S9 f& M0 X+ a3 ]! Y3 kset-plot-x-range 0 xmax
6 e+ {# B) {; Q4 g
  S7 G9 T% G6 U# \
set-plot-y-range 0.0 ymax
4 v' p5 K5 d7 Y/ h# y3 ]! q( M
end, d; {/ S+ y  c- l; X* {
2 H# p4 n0 _, @% W
to setup-plot39 p/ u: m5 g6 x( j6 o

. S5 ^  G* f4 {5 Q, tset-current-plot "Trends-of-credibility"
, \: ^6 C6 s) d  k: i

3 h' X+ `3 D! N6 E6 Z- iset-plot-x-range 0 xmax

% F: p- r# ?/ P8 p; C7 N
+ c# Q1 e$ s" g8 Aset-plot-y-range 0.0 ymax
' E, h  @+ A8 z9 e$ E7 o' D6 P
end
% G  V# J+ T9 d0 G
/ M" n5 e1 N, X* ?to do-plots
5 p$ ?7 g' k9 pset-current-plot "Trends-of-Local-reputation") D/ z& h( }# @4 [, T! K# J# J
set-current-plot-pen "Honest service"# w2 [- H# Q+ G0 K/ W% }% `( r
end
; w0 O  w& Z2 v4 O% d0 }0 U3 p5 x. }2 \2 v
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
% V9 R3 j/ j& D+ W. R$ L- R5 L1 @( k  x
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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