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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:
1 ~- @2 @5 k/ K4 Y- D9 gto do-business ! O6 K. z9 e0 x) {  w
rt random 360
9 A+ i: x5 J+ ]; S3 A fd 1- [# E4 r' }8 j* X
ifelse(other turtles-here != nobody)[/ Q$ L7 }/ P% j6 m  H
   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.
. Y( G# ?7 @7 `9 c7 T. ~* o7 K   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
3 u; j+ c+ Q1 y5 N# h- G   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer' \% {" I/ e. P# e6 M7 f+ r% |# G' l
   set [trade-record-one-len] of self length [trade-record-one] of self# U1 u5 ~! C; A( e
   set trade-record-current( list (timer) (random money-upper-limit))+ T- E! d* ~8 m! C) J
  e( E3 q6 B, I. R. b0 I0 t
问题的提示如下:
0 H$ B6 s0 U" U/ x0 j0 t8 M0 F5 M& E. T: h  w
error while turtle 50 running OF in procedure DO-BUSINESS1 z( m4 Z" t4 [" W0 X) n
  called by procedure GO  g) l( {: q7 _  o$ x* }5 d- x4 c
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
" H' U3 }4 i& A& J2 q
(halted running of go)+ Y1 Z. q3 A! y

  J6 _6 @* @  c+ C4 Y, r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~~- L* q9 X" ~- H: Z- c: \
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
5 b! v* S' ?' j. z+ S( h& oglobals[
# V) R) i# H: z6 f" |xmax
$ {8 Z0 `6 }1 ^7 u- u5 G, Gymax
, W6 A/ _) L  Y! fglobal-reputation-list
8 R3 I* L. e4 P# I6 S8 B+ B; }9 Z+ Q
2 m, q, _0 F7 @& I+ v( n% i8 Q;;
每一个turtle的全局声誉都存在此LIST
4 [: }) F  |" P, ?  o4 ^: w9 d( jcredibility-list6 L: A; k$ d# b: \$ {3 @; y: c" u1 _" g
;;
每一个turtle的评价可信度' S  g: W9 B5 y2 `
honest-service
+ F  p7 I5 [' w2 a3 f( T& z1 _unhonest-service
2 V4 b9 }$ [: w. }# N* u5 koscillation2 w; `/ v4 ~* [/ V! k2 d0 i& U7 Y
rand-dynamic
! a8 ]. b& X( N+ D0 q7 }]* g6 D; O* j7 t/ b$ ]; ~, c

; J" q* _+ T/ N5 _) Bturtles-own[: I, U! s6 f. e  J3 D
trade-record-all# P# n& f( g/ M
;;a list of lists,
trade-record-one组成) R' H( L) z6 r1 ^
trade-record-one
0 O& e0 q& E1 [' 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, O7 T( F7 A+ j# }: X$ }

$ a) I% ?" y7 R( w# h;;[
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]]; k" O5 M2 }5 L5 Q5 Z# ^3 A
trade-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]* }7 g: e$ L$ K  |7 x$ U
credibility-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
# \3 Q, U4 j, i& F  j7 V" [neighbor-total
1 k& x8 s5 e* A1 f& L: q;;
记录该turtle的邻居节点的数目7 X0 i" ~3 n: i' s& W7 I
trade-time
9 Y3 q8 S- o; C9 k8 `( T" c2 Y;;
当前发生交易的turtle的交易时间4 s+ V% T8 ]2 Z3 A) f( P8 Q* L2 ?
appraise-give5 I0 @* q- n; c
;;
当前发生交易时给出的评价
% K* Q0 c# g  p, `% q9 p+ A# Kappraise-receive
8 O2 V- _4 P9 v;;
当前发生交易时收到的评价
1 |8 G+ V6 o- ^) k( Bappraise-time8 c5 M/ H5 b+ t, _
;;
当前发生交易时的评价时间3 G7 M" y0 n2 ]1 [3 ]
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
/ G5 [" y2 A( \: t& }9 h$ Ltrade-times-total% }  b: a* q: v. k* j
;;
与当前turtle的交易总次数) D" l# u: m7 K& f
trade-money-total1 P! q2 D0 v# S7 H
;;
与当前turtle的交易总金额  E* k* c$ P) M* z, e& I% }
local-reputation  X0 g/ {! v- o3 E, P! R
global-reputation' t5 U# \, ~1 o
credibility$ [  s/ M3 k5 V2 m
;;
评价可信度,每次交易后都需要更新
/ [  c9 a& r7 g% Q! r" _1 ycredibility-all& W  _: d+ ^/ U2 L* x) P: ^, b7 V$ \
;;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/ t9 y9 H  w4 l& u
7 }) A, h: p: y- W( q
;;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
+ P% a1 Y  Q2 ccredibility-one
$ h( ?4 F) H, ?;;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people' M* u$ `/ o$ N( \' ~& g" ]
global-proportion# Y) m  w, X/ k$ L: A1 q* G" Q: N4 o
customer
' H& `4 V& ^0 i, K$ N$ `4 [customer-no) A' N$ y$ H$ \- _
trust-ok9 |5 Z' ?$ z  c9 Y0 F9 n8 g
trade-record-one-len;;trade-record-one的长度' ?$ d1 B! M4 k/ K3 V% D" N9 k
]" @" F: p+ k3 a( j5 Z6 Y! F
0 Z* t& o! l( o  ?. W8 l% V5 E' e
;;setup procedure
* {' \9 b6 J. m0 {' S2 ^5 j# G* W7 y% r
to setup
& h/ F% G& N5 q% F- P$ L) e( e: |2 ]% {7 s" x/ b. b
ca
5 p/ \" e  q5 R4 R. v

9 o* c+ |4 n4 k1 v, s) C. b0 sinitialize-settings

7 j; n; r0 E# g  L  ~" o' E) s; o; K/ z# W' F6 @! x, }6 W
crt people [setup-turtles]
; o* z7 q3 X7 F( g
) M8 [/ j' \" |. Q3 |# G) O3 I
reset-timer

$ b  \1 l3 n6 T  U8 r0 V% s3 g8 a* ?; C  t3 m! L& x
poll-class

" e* X9 L% `; Y* _6 K3 Q0 U
" k8 j& k2 b. N$ U0 m7 J. ~/ p- isetup-plots
  K3 \: [$ z& t1 k) F6 `
( m+ v8 g- T! x2 Y
do-plots

4 P3 `4 [; ^6 N2 |8 \/ s, tend  W2 d- p# Y# ^

& p, @( V3 a! h( G* Y# [: Z  b& fto initialize-settings# G) \. p$ y9 N

+ R# \. n% x  t. j* }9 ~5 d8 @' sset global-reputation-list []

1 C! m: C& i) Z) C2 z2 K( @! [' w" B8 Q9 r- u" w; C1 [
set credibility-list n-values people [0.5]

  S  e. X9 w. B  D; w1 U0 V) O+ l  B2 |
- Y  B" h# @( n. }: }# w7 p4 gset honest-service 0

$ _7 A- A, H/ o# h  l/ G( [/ r$ x8 f' j) r# U
set unhonest-service 0

% G) m% O3 p- g$ J
; [1 |4 l" ^7 t9 S+ B+ cset oscillation 0

* h5 y2 e8 t& w, ^, Y+ W- N! G( Y1 q  T$ A. l" q
set rand-dynamic 0

; p6 _: y- j  S7 e: Uend
- Q. j% C% X# m6 {$ L: @6 z. L1 }7 }/ k0 {6 N
to setup-turtles 7 \# P* ?6 n1 p  i( @
set shape "person"
9 r! y6 `6 b& `# |% u3 \# k3 Xsetxy random-xcor random-ycor
5 n; i% }8 t% j/ `$ Q( kset trade-record-one []4 O& `: a) ?4 w1 j$ j: W
6 X2 |" d" |! K) l% [$ i# S0 D
set trade-record-all n-values people [(list (? + 1) 0 0)]
# N$ M2 n) r% @3 c2 [
& Q. K, {4 u0 z! f5 A
set trade-record-current []8 j% s* \: ~2 ]
set credibility-receive []+ w. ]% M$ n/ e0 f; z; g# l: {: \
set local-reputation 0.5
; k6 ?  j) J3 B, O0 wset neighbor-total 0/ i/ Q; Y% m" y4 f: ~1 K$ K. e
set trade-times-total 07 C% g9 R2 b8 U" \* o  W
set trade-money-total 0
) n  U0 F, N% s- F# M2 I# ]; R9 lset customer nobody: p5 J, f5 b7 |- w5 |) T2 ]
set credibility-all n-values people [creat-credibility]  x% Y% |7 M' Z
set credibility n-values people [-1]: C2 A* [5 C, ~. R. N: b
get-color
3 M& q' o, ], ~; r5 v; B
" z1 z6 w5 v, [  O7 |  r6 r
end0 r+ ]. n; T: C# e  y; c

+ ?1 Z* {1 _3 E+ Jto-report creat-credibility
; F2 H% {/ J* G( j- {/ q+ |9 h$ kreport n-values people [0.5]
9 e, x; c. S" J* E" p, I4 z+ send$ o% \# h3 S9 V; |
1 h" [5 k5 v. ?. F8 M7 n
to setup-plots# V3 W' {6 o4 }: m7 a4 B" L3 Y

" ~; K" D9 \( T( sset xmax 30
2 Z. f+ b8 ?9 ?/ ^4 ~# F6 K

2 \" h( p5 O, `; G8 lset ymax 1.0
- B! H$ _6 `* q0 g# w
, X& C( ]" R" b2 N* c/ _* }$ c
clear-all-plots

  s7 v( S9 _& b  O
  d# M, p2 W& ~  Vsetup-plot1

% {' o. R' i. P% {
# P/ M4 c6 g! J, ^# p+ F/ Dsetup-plot2
9 K8 u7 H8 t/ V
% M1 S3 I5 O- R2 N. S, e
setup-plot3

6 |- I  \1 }* O1 u. @3 Jend
( U5 `( R0 K0 O& T$ G4 @
' c& Q8 P$ Y0 Y5 W;;run time procedures: ]; Z& K1 S8 o2 K  w6 s' X

: H) T& H. L  d( vto go6 ^6 D% p. k! x5 ^7 _0 a" j9 Q

9 f! ]/ C2 p& Y, L$ Dask turtles [do-business]

/ B5 p( j2 a* P9 a5 f. S4 G% }2 @end3 a8 j* R, N3 F# W: e

" W$ f4 z/ J9 bto do-business
: k+ B4 Z# ]; h7 J: o

. l/ i& R0 X* t; Y. v! c" X
$ Q- h9 N% v) m# z' }& ert random 360

4 J3 k: k) J' b' W( G
& s  u4 @1 P. N; o0 mfd 1

3 `' k7 c# R  l" s" Y- G8 b( l
5 J% f1 T* S" nifelse(other turtles-here != nobody)[
) C" x2 L& v. B. |7 U$ N% y

9 `8 n2 |) `) Q# J  D# S6 ]set customer one-of other turtles-here

* O3 L2 x  j, A( |( @* M6 E* [! U# Y  D, |' }3 }
;; set [customer] of customer myself
* B  k1 O, o, t7 H! J
+ U! [1 q) m- P$ Q' x$ |
set [trade-record-one] of self item (([who] of customer) - 1)
; `" Z! ^% B) |, e: L) f8 `[trade-record-all]of self+ N8 w: [3 K# ]) |7 _2 {, K
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
2 ]7 E' B" I$ ]+ C' x- M, Z; H

7 y) {2 J4 D& m: M6 Lset [trade-record-one] of customer item (([who] of self) - 1)! A! E5 Z0 O, _3 i' S
[trade-record-all]of customer

4 ]- V$ n" X; Z2 g1 a
- Q: d% O# D% n7 h& gset [trade-record-one-len] of self length [trade-record-one] of self
; P3 U" G& M! ^. ?. \+ }; s

$ x) J  `  Q# C, X! v. Eset trade-record-current( list (timer) (random money-upper-limit))

( b9 Y9 O9 t: ^: p+ F8 c
" g, Q- u# K- |; X: O1 ?' ?" Sask self [do-trust]
  P1 \* c  \- K4 F. f+ m* r6 }- L;;
先求ij的信任度
& [! n6 p4 \9 A2 |* {
6 j$ h9 }$ j  I& lif ([trust-ok] of self)
$ @3 D8 S8 O7 K! l+ z;;
根据ij的信任度来决定是否与j进行交易[: E5 S1 B3 L  A9 S/ L
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself; W4 w4 v2 i+ t/ b0 k" J. z
( H' s2 t* Q7 k
[

5 P0 M$ y& @/ H. B9 m  y9 J# n! z7 E/ i" p
do-trade
# a3 d6 \) M6 n
0 O& _0 [8 P! R! O- V
update-credibility-ijl

- H. m+ d1 a9 j" b% d$ E' @7 m, r7 r
update-credibility-list
& D8 d& t9 R/ |3 r4 W' \% o
* j: k3 e6 p( j

  X' \' ^" y: ^7 @; d. B( zupdate-global-reputation-list

; H7 Z+ t4 u3 D; _/ k* g0 f
0 g2 y* j; f* ipoll-class
4 M2 q7 T" m$ M

$ {* K( t) t+ f5 h9 Xget-color

/ y& D5 t6 j! [( L
) Y% V/ H3 U( u# a/ T]]
1 y' @. }9 u0 c# r1 m) n, H
, B( T- e, V; ^' b2 M8 V# ^;;
如果所得的信任度满足条件,则进行交易6 |( M/ c( l* c. O. q$ a
1 V% m( P+ G8 c6 M
[

# ~% {) Y. w+ l* {$ r/ Q; A$ M8 B- ^1 [& s3 y
rt random 360
- b5 N. b; v4 N( o
6 D+ y. {  h- X8 Z$ c
fd 1

3 E5 C! [7 x' y2 H  y/ q! o1 Q" N* d; [0 x$ P* }$ P, k
]
7 v: C8 t6 ~0 l4 {; C

  }4 p, Z, ~" ^; tend

4 F1 M- F( a8 v! h3 D
% v# S1 P) I9 L( b0 A7 p1 Y- }3 Kto do-trust . J, v/ }+ Q% I; ~( `) l* T/ `
set trust-ok False
2 m- I6 `) ~2 D3 h- ^% _6 }
7 t* u/ j/ l! n: b/ N) Q

+ s8 T: E( o  V2 k6 Vlet max-trade-times 0+ X: I+ A" G2 B7 l, o3 X8 R0 V, {
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]+ ~; T# s+ R; d0 P  d! ^
let max-trade-money 0
' c  m. i, h0 a2 L6 F  y' E& x8 Sforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- Q/ U( I) R: ylet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))5 R: d& J0 I0 w7 @7 _1 C% [" O' x/ L
- O6 ~0 h% l- d& J, `
" K# g! C7 g! a0 j6 e
get-global-proportion
  ~; N1 i  ~  L, i4 O0 zlet trust-value* B5 A4 ]- K- w8 `7 |
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)

3 y2 s' g' E. B- }5 a. Fif(trust-value > trade-trust-value)' T5 J( o" t2 V" P" Q2 D+ g: m
[set trust-ok true]5 ?9 s+ H+ P, }* F- k1 C' U. B
end9 c" _6 f8 W# W! `) ^' X
4 }+ h, V* I8 H% O5 Z
to get-global-proportion
9 N# R3 y# F* Lifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)* q0 `+ L+ x+ e8 s  E% U% p- R
[set global-proportion 0]8 o+ x* ]  V4 L# u  T0 w# J
[let i 0
+ {% y3 g" r! _  klet sum-money 0; K6 L# ^/ L" [' `' t1 D
while[ i < people]- ~1 J, `' s/ Q  o! B
[
2 c1 v* S3 x! i, a9 gif( length (item i
1 l( n4 j7 Z  C0 Z6 G+ Y+ K[trade-record-all] of customer) > 3 )
- r% b, Z, x" b. f* q% K9 L
[& j9 z: i* B" Y6 X  Y' V, n* w
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
3 f, {& C! W2 i* n; ]]
- l! O4 c% o( e2 k1 W  ~$ \1 ]! h]1 o+ U, i& o3 b7 n$ U
let j 0
0 {" w# i- ]6 o( l  d2 dlet note 08 r( O; b, l2 S5 v, i7 j
while[ j < people]' E2 G4 z& C4 z! t; b' B6 N/ E
[  x' u7 j  T1 f1 r% ]
if( length (item i
( ~  d$ m1 a. P$ |& l[trade-record-all] of customer) > 3 )
3 n" Y3 s- F# T4 b  S* Z) o0 Q
[, H8 q0 ^) p! t1 i
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)4 e# H( S4 n! E9 g# k; z
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
: r8 j/ e! ~4 ?5 d3 @$ R* N- n/ R( ~[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]# {- {8 P# O( ~$ z. G0 j- G0 j
]
7 ]# U: ~1 ~6 C9 L9 D3 E]
8 G1 x7 b0 ]0 ?, P& P. Jset global-proportion note
9 ^% X' V. e6 z; q* d, R$ P, \]
* D: u( K* g: G; y# Wend
7 X8 \, h9 {/ D" T% O. U2 V- h
3 g1 T8 `. m) I# A9 Pto do-trade
2 A8 ?8 u+ g% ]# w! T+ }  M;;
这个过程实际上是给双方作出评价的过程7 b: u% s4 g7 _+ K* s/ O: {; Q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
  I* h6 u9 k6 Y4 yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
6 Z0 R$ v7 R6 Q, R5 ~- x& tset trade-record-current lput(timer) trade-record-current
8 K% s0 Z$ B% n4 k$ T$ e( ~;;
评价时间
5 l1 R; X5 S8 v; yask myself [6 g' v. r- `$ {' B3 {0 u' X/ y
update-local-reputation
+ j& N( j9 m! a7 y) e# Rset trade-record-current lput([local-reputation] of myself) trade-record-current$ v: S9 e8 J  i5 F  f% t1 e
]
$ p  Z8 e/ J9 Lset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
  A! L. K* {9 }# D. J" P6 A0 Z;;
将此次交易的记录加入到trade-record-one7 s8 M) `1 |! i9 i
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)6 {5 _& X: q: i) e5 b9 j
let note (item 2 trade-record-current )7 _( ?  v4 r4 R; y6 v/ N, @$ ~0 g
set trade-record-current
2 S/ N. k0 [; A6 w(replace-item 2 trade-record-current (item 3 trade-record-current))
% r" D* v, u0 Z! n0 R
set trade-record-current- L/ v. h% H8 q9 C& o
(replace-item 3 trade-record-current note)# w8 G0 `. ?4 m+ z5 ]# w
8 @6 o8 ?2 y2 ^$ n- A( {+ P( Y* I

# `6 _* E$ v, r  j; Eask customer [
* @0 j7 u; I5 r2 B- Nupdate-local-reputation
9 z; J( w0 N$ g+ b8 o/ q. [. Jset trade-record-current8 ~! d- q( H' F2 ^! a% |% W: @. I
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

. ?6 q* a# r  @]: M/ E5 m( V: i7 k

$ x5 E# _! u7 ]$ M) n% z
3 b( k) W" a$ f; r- z- d- [7 b
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer. }, W8 k. S! z( D* J: E- ?/ {

( o2 \( _0 X$ gset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
# }( b* G. j+ @3 K4 r; [;;
将此次交易的记录加入到customertrade-record-all
2 @7 K: v1 \6 Bend
$ u. h0 W/ \* P3 I5 J' S; a4 k- l' e7 w& e6 t
to update-local-reputation5 w, F& N; v+ H" d$ y+ K
set [trade-record-one-len] of myself length [trade-record-one] of myself
- S' \5 T% J1 [( _" @& h+ R4 ]: Y# Y1 P) ?" M7 ^

' G6 ~8 R4 \, a- m) D& V;;if [trade-record-one-len] of myself > 3
% k# l  f) J8 @5 C8 F/ M
update-neighbor-total) t% |% m3 N- H& ~8 ~- \- t7 l
;;
更新邻居节点的数目,在此进行
3 [5 ]: I2 P9 Blet i 3: `+ k1 M9 r6 @  c- T
let sum-time 0
) t0 |( H, I, o2 c( y, t9 Swhile[i < [trade-record-one-len] of myself]
1 T; a/ h/ a9 T1 Y8 ~0 u3 j[, A' l7 u2 a1 p/ `& E+ y
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  C* [/ K  s, S# Lset i9 C* n$ x# F2 a* l
( i + 1)

# x7 q0 Q# E* s% M9 d]. k4 W5 s2 H- C% o
let j 3; n/ w( h/ P# s9 q" V6 C
let sum-money 0
9 _' o! O  n: H0 J7 kwhile[j < [trade-record-one-len] of myself]1 O$ V% P) P6 [
[
7 x! L2 @5 x5 R& Xset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
5 f% B/ b, Y$ z. q/ q- Z. I8 [set j
! k4 b/ D5 O4 k" [. l( j + 1)
* Z$ r) c: t' ?" j% Y
]
4 O9 j) r" O  ^0 n  Rlet k 3( l+ Y: `  i* v
let power 08 A( S7 E; H6 r
let local 0+ [6 x) q# _, ?( i, x( |
while [k <[trade-record-one-len] of myself]+ _1 g4 R  \0 N  M5 M' ?& V% h; i
[
6 B9 p5 u  B1 [. r" T: |9 q: t$ n; @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) 9 a: G- {* \, e
set k (k + 1)
, e9 w1 ^2 j1 l7 s8 }  b]
: N1 E& t. q* _+ Uset [local-reputation] of myself (local)+ X+ m4 n2 I% H/ `
end
) e, N8 Q# W. v3 P) C
6 @  N5 g8 v$ B% s9 q; j' eto update-neighbor-total
* |3 S! k5 B, B1 J; ]1 o# ^9 _! @
+ u4 l* J( b: S0 s: wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
1 x# {8 t; ?! g
1 U. ?2 G9 }5 ~# J+ F1 d
; S, o2 N- T# P4 ?
end
3 w9 Z0 R! t3 T, ]
4 g! c* S! Z; ~- ]to update-credibility-ijl
* D3 X1 F1 w- ?* S6 p) I( B+ ]" K# p% S# {* {
;;
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。
: _% P' N$ b5 Ilet l 0+ F+ @: B; i1 l1 z) c9 E2 v; ]
while[ l < people ]
3 n" l" T- X  u/ @; d5 u;;
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6 d9 Q0 @7 p4 U" P
[
: c' e* [8 U4 \7 O! ^/ R6 ]+ T7 b8 Qlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)  P/ u- M5 n, L+ I  j9 ]
if (trade-record-one-j-l-len > 3)2 _0 I  i0 q, L# Z2 w
[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-one
! k& ~; N/ u7 T+ z0 G5 I+ |6 g& rlet i 3
* F  U5 a5 n. Q' Flet sum-time 0
  J5 j- _' ~  U# O# ^; c* bwhile[i < trade-record-one-len]
& L8 D. W" ]) u2 Y1 y) l. d4 d[
6 t8 B% o. D2 a7 Qset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
+ C# ]1 ^7 n" ~, e5 Gset i) }' K6 ^) O+ v7 @8 M
( i + 1)

% ^% X8 V# r$ j& d# w7 I9 K  G0 i]
' \9 H9 H6 n* u" Tlet credibility-i-j-l 0: |1 e- J2 `! Z% h- ]: _
;;i
评价(jjl的评价)
/ w" A" E; r* C9 L7 \' ~% Rlet j 3
0 A* r6 i7 O# Q* V2 \2 qlet k 4
! Z" f# ?0 z% ^% x+ Mwhile[j < trade-record-one-len]6 }$ `4 t, U) [8 J
[& i; t' g2 E# v% ?! ?
while [((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
/ `! `2 [  q, l! D1 \( B% H1 h5 mset 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)
7 i  ?  D0 r* a. q5 ]- Qset j, u0 D8 W: d' `
( j + 1)
; e$ J1 W! }/ r/ {0 B# e
]4 `+ l* e5 }7 \$ a* o! C
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 ))- J+ J* Y( R/ o( B
: H- d5 F4 ^1 P& i1 P9 U0 \; U% `

$ l3 }4 _4 n! p& e0 H- hlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 ]" F* j: B) s5 V! n# i
;;
及时更新il的评价质量的评价$ M/ a8 g$ U4 r8 s
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 s9 P! M! x! A% j  [/ q7 f
set l (l + 1)
& _" i( l+ i5 j6 o! g, p$ R]- e' }; R. Q! V: |+ G( g
end- Y- m( b+ t; y7 |/ F1 O+ D
# W3 A; ~3 n% p/ p8 p
to update-credibility-list
! F  h+ o1 V2 w+ C5 r6 Tlet i 0
2 T$ N3 I* p' ^7 f! ^  w+ Y) Y1 Iwhile[i < people]
! I7 T% ?0 f  b( o" A[9 N5 S  a: Z8 Y" S
let j 0: J2 k$ h5 B/ u/ V
let note 0
1 d1 A+ d- m7 d; L+ Hlet k 0
$ _& T9 p# l/ M) V;;
计作出过评价的邻居节点的数目! S0 N, B( L3 z5 o
while[j < people]
% {, z" o8 c$ |+ k) O[" E! [# V$ r+ g: [* R% u
if (item j( [credibility] of turtle (i + 1)) != -1)
$ A* m9 `1 R# R+ \+ y  b, k+ ];;
判断是否给本turtle的评价质量做出过评价的节点2 t9 c# t7 `& j3 C7 ]/ T" N
[set note (note + item j ([credibility]of turtle (i + 1)))" v) J! S% v5 s5 A3 }! v0 s* |7 `/ h
;;*(exp (-(people - 2)))/(people - 2))]
8 I1 k; ^9 d9 j+ q& t' H
set k (k + 1)4 W, M% U- h. t1 k2 s$ q7 b9 z9 C
]; d' U: V+ I! ?
set j (j + 1)
8 @; @/ q- F& t. A/ g6 N]
- R/ P, p7 n3 P, B! [set note (note *(exp (- (1 / k)))/ k)
0 S$ |5 K1 ?0 d1 @set credibility-list (replace-item i credibility-list note)4 ?1 S( b* {3 R4 B; }  X8 J- I
set i (i + 1)
1 D3 w% A7 S; v' ^% V* G9 I  J]1 T5 h7 D0 f2 V" ~- J: ~, X; R
end( ~- D: C+ b+ S: U- w$ ?3 e+ [3 j
6 Y, b5 Z( P  ?5 `1 U
to update-global-reputation-list
" H- j3 z6 @8 b  L9 z7 y* Y# g0 E$ Xlet j 0
2 y- V6 f& D8 W( w6 q! Twhile[j < people]
; ~; S/ ^1 u! [& e[( N5 N% f) V* d0 R% W7 r( U
let new 0
  P: _5 ^5 Y2 T0 ?0 W;;
暂存新的一个全局声誉
( d4 D5 R* V- w3 ~; {* E( Zlet i 0
+ q: a" ~4 M, l/ I2 ?let sum-money 0- g3 U+ d- J; s, y% X1 r. A% j
let credibility-money 0- z# f  r# y2 m4 f3 a
while [i < people]
) I4 }( v2 |; D4 k8 O  p[% q6 y& \  c! x0 C7 w+ K$ {. h
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))% x& T! E2 z1 R0 l" d, h7 k
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& z* t8 e) i, u! u( Uset i (i + 1)
# W5 a/ ~) \5 h' d- n]
$ o( p) y8 f6 J0 z, }8 |8 O, [/ M  Rlet k 0
, j9 P" @- s7 F7 T, B8 k1 olet new1 0
# E4 G( ?/ c6 Hwhile [k < people]1 x3 w/ w; v7 D, \& i
[
/ L2 i: k/ E& O1 h. G& \$ m+ J/ \; nset 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)
: s: H0 i# e) m3 X/ uset k (k + 1)
2 S$ y+ e- P: A: z5 e1 X  b" J]) M0 O$ w8 h* l* G8 J" j! j- R
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 2 q- B" y3 n2 Q, C4 o6 A
set global-reputation-list (replace-item j global-reputation-list new)
+ j3 ~. a6 k: ^! v: K4 P. Y" X+ Fset j (j + 1)
% P6 ]' O" n7 W]
) G5 P- J( E, Q+ R; _) r! w6 g# Kend' o: d0 A: y6 ~2 y( ~2 U( p

4 K0 {: {* V4 X9 F5 y3 x* N6 i$ e: g7 i. P2 }. K8 D

  c! J/ G6 U- b3 s: Z0 Y5 Hto get-color& \9 G4 K" ^/ P9 O2 f
( y! d3 s$ F) j
set color blue

4 |5 k- `- R( J" P& K4 Fend
: Z: u+ l4 D1 \
0 w% d, x8 B* a$ oto poll-class: r: F* M% q8 z& H. q2 x3 E1 _
end
" K  p  i" }# Z/ k8 v- }+ Y( A; u( ?1 y5 k
to setup-plot1  ^  u2 n+ {# y0 z4 p* K3 ?
$ j- u- s, G& r; X7 a. B. ?
set-current-plot "Trends-of-Local-reputation"
  C6 n: O. b- g  M, s

. i( X0 M. e, z$ z: b) `& hset-plot-x-range 0 xmax
/ a7 {+ @4 p# ~3 E

9 k* I  d: F  D) Dset-plot-y-range 0.0 ymax

1 u: r. W  R3 r6 gend
8 L+ t% L1 Q" d, |: ?5 u* B  f6 N8 `* D& L. e  y) U
to setup-plot2
, i% `+ ~  i' f% A9 c% j, s3 P4 K) O# j, r
set-current-plot "Trends-of-global-reputation"
- ~  F& X4 T' `' x$ W
/ ]+ s+ k7 U* l( @: k
set-plot-x-range 0 xmax
+ |! s) z) ^9 g: h* U4 H* S* Z
! I$ y) ]. E0 f" W! f9 L
set-plot-y-range 0.0 ymax

/ U! [5 @8 R' b! H; ?, gend
; {& M( ^1 N  u4 G1 |1 w0 p4 Z2 l) r4 y% E% ]
to setup-plot37 ]! u* ~% S( q/ U
  M1 X! s# P) V7 t% r& f1 @% y0 i" q
set-current-plot "Trends-of-credibility"
9 v. X: }. v" w; u9 v6 r7 I
4 ^. S% P# I4 C5 B0 D
set-plot-x-range 0 xmax

. ?' c6 O4 k/ Q2 R. a5 h) p' i9 P; T  T/ }
set-plot-y-range 0.0 ymax

: [/ }. n" @# c8 q, g+ T# j  X, tend8 \0 L, ?* U, ]  i; ]/ r& r
$ b5 B; Y2 a" x* i& e( ~
to do-plots
5 p' R; c* R' L: C1 x$ Oset-current-plot "Trends-of-Local-reputation"/ i6 p& ^$ i" r: A) y/ Q
set-current-plot-pen "Honest service"" U5 b1 v3 Z  }0 k3 n
end- O; T2 ?) }9 Y% v( P

+ T2 t5 [( {. C4 R! d7 l[ 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.
0 M4 p- h  y# o" n  ]4 ]2 G  V9 [5 J
5 c* R# ^5 E7 J# ~" e- F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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