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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:) m5 E# A5 }+ w& G* t. _) t
to do-business   \7 k1 _9 w; X5 U9 M
rt random 3600 ]) x( \- V6 S, x/ l+ E3 h; y
fd 11 i' A  @+ m  Q
ifelse(other turtles-here != nobody)[( J1 |0 q3 t! x0 O
   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.
$ `$ k7 p* d4 b6 X) @) K/ ^. C% P   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    $ x6 X5 M$ ]( W! o% {& I7 B
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer  e$ S  u- U( n
   set [trade-record-one-len] of self length [trade-record-one] of self# Y2 j( y1 @, r9 j4 p
   set trade-record-current( list (timer) (random money-upper-limit)). P; z9 l* A7 W, f. A1 }. e
0 `5 L3 Y7 Z2 Z! t  t# S5 L! W% v5 b+ j
问题的提示如下:
- o" l- `7 @2 C6 Z4 e
( E, P# E, }5 Q% ?2 e7 ?) a7 aerror while turtle 50 running OF in procedure DO-BUSINESS
! Q8 m$ n( X2 W3 }" Z  called by procedure GO
& |  n6 w: F! {4 A) n0 m( {OF expected input to be a turtle agentset or turtle but got NOBODY instead.
4 d6 r2 _8 U+ t9 m9 r7 g6 B
(halted running of go); b8 Y% R; i. r' ~# C$ z: t6 I

; }& V! [) k! u4 [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~~3 k9 x7 O  F! f( M8 N8 [
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
9 K. z) U1 I' L6 Vglobals[
, g8 p, A" z4 a! O7 r  ]3 [xmax
- S( f, w9 K5 g0 |2 y3 |' j- oymax
! X# W6 a0 m& M+ Y( b! Jglobal-reputation-list# O/ R6 V- U, |( D( d. P5 F  l
8 i0 X5 W5 h1 {! S" r
;;
每一个turtle的全局声誉都存在此LIST1 |8 j& M# l3 G2 y4 y
credibility-list% Z) J1 ]" L+ [  b3 e
;;
每一个turtle的评价可信度' v1 ]2 k1 s2 [- D1 a- X3 @
honest-service# L' x: ^( b% B$ M0 H
unhonest-service2 E- x6 ]) [3 E1 V. [6 k" R
oscillation
! a& t" k, L+ x6 rrand-dynamic7 p/ z$ Y' T9 c" u6 v- O
]9 _$ Q4 Q% i* J0 I  ]

8 l5 |5 Q) m/ z9 S- Z) Kturtles-own[
2 x* X* E- M! z, X8 b0 ]trade-record-all1 m, i3 f4 M$ P4 k0 d
;;a list of lists,
trade-record-one组成
1 ?: @2 ^  y/ B& [% P* }trade-record-one
, i. G. n* Q( c( v;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录* G+ R2 m- ]$ w& a( w5 L& `
# W. `6 t: q, R7 ]" M$ v# }3 d
;;[
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]]
7 x6 m4 c  n1 K% Btrade-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]
6 e9 i; z" {% f, Ucredibility-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
$ `6 c5 s4 C0 ^1 P, `  U( M( nneighbor-total
8 B9 H2 q; {6 O, ?7 P: n# P;;
记录该turtle的邻居节点的数目' V6 s3 F5 W# v! ~% D
trade-time5 S, J+ G2 v/ Q0 }/ E( b" f
;;
当前发生交易的turtle的交易时间
2 e6 H% a3 y4 t1 jappraise-give
; w3 ^" U+ S8 N# }4 i% H;;
当前发生交易时给出的评价$ A8 G$ R# h/ `( m( R& Y% f' I
appraise-receive
2 }9 c) w- i7 C& W- M( K;;
当前发生交易时收到的评价
: I( G7 _! |/ E0 iappraise-time
( K4 k1 k5 V7 o( k- O3 L;;
当前发生交易时的评价时间( G; m! Y% I' T) M  o% s1 v+ R
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
2 w$ {& z( t4 k! z* ~" h; W( C3 Wtrade-times-total
+ f/ {- z- ~' T5 T7 C/ y8 N;;
与当前turtle的交易总次数" B8 W; f9 y8 p8 h4 e: [: R1 O# v
trade-money-total8 S+ T  q# E5 M6 X3 n
;;
与当前turtle的交易总金额
  |5 x8 O0 K5 O3 ^2 u7 i7 Klocal-reputation. N& ?) H2 N1 e% p; [, M" N) U
global-reputation
. v2 V# l' q# p: B8 p* z: M+ f3 Wcredibility
; C$ m6 D; S" P; [; ?3 y;;
评价可信度,每次交易后都需要更新
  _; B. D0 k1 q0 m; d' lcredibility-all8 e" L. i! d- ^9 |" ^2 J4 O
;;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7 d4 p) e0 V& T

5 f+ u2 i$ R' l3 e+ a$ E2 };;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
) K- ]$ B. a" J* s4 {credibility-one
) [. X) s0 b7 N" j2 Z% G! V;;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
, w2 \) W7 w/ m7 Eglobal-proportion
* W1 E; p. Y+ `1 q0 tcustomer
) ~# S. [. ?" N$ rcustomer-no' @8 T$ y; E4 v: Z6 _4 P
trust-ok
& E! k8 q# \- l/ [- d1 z9 utrade-record-one-len;;trade-record-one的长度
7 `2 e9 a. c. p]; ~5 t0 c* b0 L, s' d# v+ i

7 r$ N5 |! a3 J; w;;setup procedure0 a* u% T& ^( f

; s" @. m& K7 M: \% t: gto setup
7 ]5 z' `. e0 l6 Q) v9 X' O& c3 ~0 h$ k% o
ca

# e5 {! G9 R$ r5 w. U& |
, ]! ?0 R; l% d" tinitialize-settings
% m8 c# L0 J) ]. t/ G. {' L4 F
4 N1 `2 @! E. Z* K% h2 R
crt people [setup-turtles]
, {* O3 d) M7 h# a  W
8 [, G! n+ ^' a; E- p
reset-timer
" x4 B* v4 ]9 }7 `! |
1 L1 I/ d/ R  \$ v% Z7 ~
poll-class
3 K# F' ~- }' R7 p9 ]
* Y+ e6 G' y% m, l( a4 y- g
setup-plots
7 J$ R9 U3 F- n# q( @

+ B/ e, o4 V$ h% H" p% e* m9 E$ m+ udo-plots
( M6 }9 u) Z- w+ {/ O* l
end" q1 S7 u+ L" ?  |$ j
, M" t) B, O1 g6 m
to initialize-settings) a' c+ o) V3 D! u, `
% {4 @4 M3 z, N! g& M# F
set global-reputation-list []
; I8 F9 X9 ^. D- ^
, O6 Q  V7 ^# {8 x& X# g
set credibility-list n-values people [0.5]

& Y) c1 m5 I* c& P- t8 _+ r$ z& Q! o& o3 `
set honest-service 0

: {5 U. ]: h1 Y! z# h3 b/ T& u3 b! {7 ]3 a' a* A/ ^% Q7 o
set unhonest-service 0
9 u9 ^. Q0 n# o) L

( O( S( i; D: E( ^set oscillation 0

$ q& ^0 [# f2 T# g( L: d2 g/ t- C: ?2 k7 l3 `; \
set rand-dynamic 0
  u/ z2 o7 _6 m* p
end
& ?) l& B  \3 b; i4 z& E6 }! W- K
0 A* x' C5 _9 _$ w& T$ r  X4 s" fto setup-turtles
, h$ K$ x8 J; i! I+ s  y7 t  tset shape "person"1 d( z' ?: }( N" I7 `
setxy random-xcor random-ycor
) f# N# C6 B$ Q; D! Mset trade-record-one []! ]9 W- @" O6 f

6 O" d" E9 B! j9 {set trade-record-all n-values people [(list (? + 1) 0 0)]
; _1 l5 U+ i" i8 Y, r7 L
( O" O% s# s' N* Q
set trade-record-current []5 e+ Q) s2 ~9 O( P
set credibility-receive []& u& J+ |8 \' A) q
set local-reputation 0.56 i9 S0 w8 V4 T, c; j2 h' X: z& {
set neighbor-total 0; n3 T: ?+ T: o- L9 r. I
set trade-times-total 0
" C& J: p1 ]& `5 h! ]$ m% gset trade-money-total 01 M$ g5 `2 Y0 b; _4 m( a% a
set customer nobody
* L% |0 ^  S# [  }* Vset credibility-all n-values people [creat-credibility]
  V- Q: A# D/ K1 P3 K2 m) {; \- sset credibility n-values people [-1]
1 d+ ?8 i" q+ ?& D: A1 oget-color! J4 D7 E7 O# R9 e  ~

# c. M' J# f6 C0 X6 U+ f3 Vend0 W+ a: e$ Y" E

1 a8 E  J8 y3 `! A9 eto-report creat-credibility
2 R8 A- s5 b: N; |3 Ireport n-values people [0.5]
8 y' c4 h( o; a- a9 C# m) mend6 O) l5 G- I% d
: }' f* s# r& a" k+ ^5 }; Z7 W
to setup-plots
8 @3 N6 Q1 U, D. J& f' f$ O7 B2 W, e; l- w
set xmax 30
" u; R! }1 _5 q/ ~# C/ L; X( H* F

: e& N* K3 F. M& v8 Iset ymax 1.0

. H& M: S- I; x0 y
; {( P6 i6 i4 s* Yclear-all-plots

) \: J4 x6 S" u7 S4 G& }. Y( C4 G0 r% r$ [* h4 ^
setup-plot1

3 {1 V% T: b1 r) U8 a8 k: K/ O5 B, q! g) [2 k4 R$ Y2 b+ H
setup-plot2

1 J, Z( o: {) E" O; y, ?2 K& o, }2 J+ Z: B2 a+ v! {! A- G: q3 `
setup-plot3
# Q/ P0 }* X! P" [- x
end- Q, D8 e1 x7 ]- C! |2 T. u7 ~
1 I2 y, z' V4 |2 r  c) G
;;run time procedures
1 f* Z: r3 w2 c3 A" E' ~2 s: q2 B9 x& M: f) Z; y: j
to go
1 x4 w) @1 c) ?. A# O% u  S
$ ^, R" Q7 M* M  p3 Fask turtles [do-business]

" l# P8 P; ?; o5 Kend9 w2 [4 c7 C* L$ c

, I1 ^8 T; ~1 y7 U$ Fto do-business : u9 @8 U& `/ W: E! N

/ m  }' Y, V/ R. c8 G8 V  I* A) P, G& o  W& D# F4 ?! h" F
rt random 360

3 F9 T* b$ |5 ]) T. O+ X
# q9 q! X4 D" C4 K. H( g7 Vfd 1
8 |0 B3 E* e9 `# a

4 \3 L0 G" N6 X! c; J  `3 a% g4 Jifelse(other turtles-here != nobody)[

3 g: n) s  y+ _( b% ?
% q# y' B% k6 d3 e) Xset customer one-of other turtles-here
6 \/ }2 Y& D: C# i+ I

( m. }8 Y, n. E+ c: i;; set [customer] of customer myself
3 u* ?* U5 g# y

& j2 H4 ^* ^5 x4 _set [trade-record-one] of self item (([who] of customer) - 1)
& F  y" F. ]( C& c2 F[trade-record-all]of self
" D$ E: u% n. U;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
9 h7 S1 g% p  C$ K
. g+ P) I* D) a6 p
set [trade-record-one] of customer item (([who] of self) - 1)
" `4 L9 r; M- q, v: ^' F' z[trade-record-all]of customer

, `( F2 g* r- h& |$ `/ U2 t# R8 s* D& T" E$ D) ^6 Y
set [trade-record-one-len] of self length [trade-record-one] of self

  J! S, a* p: l( ^4 z2 Q3 {9 W* l8 t
set trade-record-current( list (timer) (random money-upper-limit))

/ F! U; p3 U: v1 b0 t
0 q: V" `1 ?1 _3 v( F. w4 A2 _4 H9 D+ \ask self [do-trust]
+ S. r' U1 A4 [! Z* `* i;;
先求ij的信任度, M2 }+ Y$ k! ]# f% q3 _- J
0 u- F- E2 N2 V+ ^
if ([trust-ok] of self)3 h" r+ O9 f! p! F9 T
;;
根据ij的信任度来决定是否与j进行交易[
5 n1 {1 ?! J$ wask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself5 ^8 x& U- b2 |' T9 B' S

- q) R& Q& D& ]/ z) x& q2 v3 K[

, f; d1 }1 }( e3 U* _" _0 e( d
3 {) e. j7 f4 n4 Ydo-trade
3 N' _( n1 `  O

$ g# G; C& |3 T' S+ o8 _2 P- A: eupdate-credibility-ijl
+ @) ^! j& f! u% H* a

* h; v9 K* K! X0 B* u% I7 \/ U& Vupdate-credibility-list  L7 Z& j7 w! i! K2 M+ O

5 G  m0 s3 y, O% \  X3 K+ }+ F) A% E1 }3 F) i# j; S
update-global-reputation-list
' ], f6 S, f/ V  Q6 l$ |7 g9 n. p

2 q1 H. V( E, F2 ipoll-class

0 i+ z2 J% [0 w4 i0 p) c7 r9 W4 ~" }8 ]8 W
get-color

' ^" r* E! T$ c9 A8 q9 X6 W/ E) J; g, g
]]
6 o6 J% k9 @/ W* \2 W& g1 B( r+ j* ]( e' e7 d5 @; X7 J1 z
;;
如果所得的信任度满足条件,则进行交易
. D; @. j; e- Z( p  K; w  L! H; Q; ~7 r. H
[
% p* e. ]4 [$ T3 z9 e. T
) e: L8 G- z6 O9 e
rt random 360
3 X  y; p% w+ U' p% Q
# r( H% y- c( N
fd 1
, i% Q7 |! y3 o% g9 m1 y7 g; f9 s

7 c5 }- }2 C2 C]
2 Y6 \; E. p$ [8 `# c. S+ G' i$ R
& B% {8 q, I" t2 o4 t) `) ^* y; T
end

9 K# r4 H/ S( N' k- r  L) p$ Y' g+ g! X& M6 }, @" E
to do-trust
7 X4 G* b: u  k' d, W4 y, sset trust-ok False
) l9 n+ z. C" q" x* [
6 i( H2 {7 V4 T
- V9 x1 `1 }  u) n0 q
let max-trade-times 0
+ S3 B/ N& @, s8 l) m& p- g2 lforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]9 P; \' c, p; W* \2 W- s
let max-trade-money 0
& n/ r. K; o' Gforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
3 I  R/ i8 I) `: W. g& f9 dlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))5 d+ @# U; F, y2 z  x  x. Y
: q. ?2 G/ i, D- c8 n" Y
9 }) E; c- w- }  w3 o8 E
get-global-proportion  e1 a( R* {# O0 F/ A# ^: m
let trust-value" E: M' `1 H9 i0 e2 `6 I
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)
* u: B& J1 n, U6 ?, f
if(trust-value > trade-trust-value)" T3 D* B; }6 V/ V9 r
[set trust-ok true]
" f  w, G: x" ^# Oend
# {+ v8 o. \$ V; K8 I
1 B3 N! q1 q! ]4 u2 ato get-global-proportion
; i* D; R7 d, D  u5 \5 L0 lifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3): @* x4 L; r( D% i0 Z
[set global-proportion 0]: X' G" \! r0 W. Y( |4 A7 ]. [- q* j
[let i 07 k% _7 T9 k# }8 y; v" l
let sum-money 0
4 Z/ A$ R8 y* o5 Ewhile[ i < people]
1 X  j7 m$ `# i$ n9 Z2 }' n! A[7 P! F3 u, Y  K/ x4 K3 |) S7 U3 [. A
if( length (item i4 a& ]5 S" b: r: T9 |* |
[trade-record-all] of customer) > 3 )
! m. G$ T3 H' v* K4 K7 k
[  a/ v: i' c/ M' U4 t, s
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
/ c8 \- ^) l' E" P]3 F0 o, B6 [! n8 H) q
]
. T+ o: z# Y; b- rlet j 0; d* {9 O- N8 f
let note 0
. X  o5 z( p5 S2 k. Awhile[ j < people]- K) D& ~+ z$ T5 g+ X+ o
[3 B  F8 q  B$ p8 X' h2 a) {
if( length (item i
9 B& F0 m" ^7 v% ^, v[trade-record-all] of customer) > 3 )
9 ^' f, ^' V* V4 H* B
[+ j  G" C8 [) I) r  U( O+ ?$ g7 B
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
4 K% M! L0 Q6 A[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
* Y2 P+ S3 X9 e) {4 W[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
% Z: P2 [5 N$ M* w- p]
; z4 d9 o% y8 w& v8 Z4 b+ c* G* O# p]
3 l4 Z; G5 W& f* Xset global-proportion note7 K+ S. t0 H/ X) r2 u% y- R% [2 J8 o
]
0 y& T. J7 i7 t4 E8 Lend! L. n' A6 n0 M

% I% O; }9 ?6 H! }6 C- Vto do-trade
; y4 j/ E( a6 J;;
这个过程实际上是给双方作出评价的过程
; h4 [7 |( I5 p; ^; G4 Nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
/ ^- A" r) y% B% W- B& Bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
6 J4 G1 O5 D4 z. B2 U+ Cset trade-record-current lput(timer) trade-record-current/ E" S6 E( \' M, \0 G3 h
;;
评价时间8 B! c9 @/ p; }8 J9 u" `$ i
ask myself [+ p: n1 n& u' r; M5 K! G
update-local-reputation$ }+ `+ T5 P3 I: G  v: I4 i
set trade-record-current lput([local-reputation] of myself) trade-record-current
8 ^; q' z  E* [3 W- z% q]' I; u! {( Q; ~* S& M
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
3 L5 M  ]- t2 O9 p; {;;
将此次交易的记录加入到trade-record-one
  g5 j' \7 `" }6 F# E# u5 ^set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
" k. m! M7 H! E- B' y2 Slet note (item 2 trade-record-current )6 L5 o+ S  R" z4 Q# s) \! k$ y* [
set trade-record-current
4 V; W/ F. y% P; j0 l7 B(replace-item 2 trade-record-current (item 3 trade-record-current))
. I* w2 G0 I# ?, k* x
set trade-record-current, G! K( D% z1 J3 ?4 |
(replace-item 3 trade-record-current note)( }7 y) r# [7 [; b* B: ]( X
! x2 e# t6 x: t! W2 _

  w5 N* p% B" s$ Nask customer [
: R, v6 ?5 }6 E+ a) xupdate-local-reputation7 \4 N% o. z4 S
set trade-record-current
9 U( x3 B, C- z( X4 `1 E' ~% @(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

. {5 L; s5 ]3 u]
$ r" X6 N) `+ L" k1 M3 V4 d0 B, }5 K& w, v7 l# l! Y. W; E3 T

3 r& q1 w3 }, I6 i, r* z* Dset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
; V+ l, F0 a3 v. O
$ [/ t+ }5 Q1 Z6 D: e$ T
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
6 S& J& [/ e" s) ^* c;;
将此次交易的记录加入到customertrade-record-all, V, A  a, M2 g! V$ W0 N2 X2 G
end* T, Y. l3 [9 j$ O: B# C8 [

, b! h4 U" g  L* X( {+ V  Dto update-local-reputation6 K2 r! s$ w  r' r9 l
set [trade-record-one-len] of myself length [trade-record-one] of myself
6 c% J) y) h) h0 j
* f* I  {; B! a" s3 D! q& a0 E1 O5 I( s+ a( J' p3 g  p
;;if [trade-record-one-len] of myself > 3

" w: K( R  M5 e/ O$ e) ?update-neighbor-total" V' O2 d( `) ?# w, v) g
;;
更新邻居节点的数目,在此进行- c  B' \, t$ m' b% x7 Z
let i 3
. }; o7 ]/ R( Q7 blet sum-time 0
5 l$ y2 l5 }) F! J) R" mwhile[i < [trade-record-one-len] of myself]
3 l; V3 c4 s2 o2 g5 L2 }[1 Y$ P8 w+ \$ O9 V
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
, t5 R" v7 `+ J4 C3 }, h. T0 x& bset i
3 l* I) P6 H4 U) h( i + 1)
( U+ @8 X+ l2 t& B2 e" ?
]9 }: @$ W& J2 g' Z3 ?  c  K( a
let j 3
0 z2 z( k; P7 f7 w4 v; alet sum-money 0- y$ |9 n1 [' D' t9 [6 ~: j
while[j < [trade-record-one-len] of myself]8 \* j5 ^$ Z. D5 T4 r0 |# s
[
% p' I& R2 y# ^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)" {; _% |- I3 p6 U1 \8 m$ a
set j+ r! ]6 U8 S+ b! g* W
( j + 1)

$ r# B! n. [( W3 L. A8 Q]
& q4 h  I+ ^* v  R3 `let k 3
. d. q, X4 ?0 x) Z2 K8 tlet power 0
: h3 X; r# G% D: p8 w0 R% ?" hlet local 00 \5 P* h' v$ U8 P
while [k <[trade-record-one-len] of myself]7 h% {6 Y& d/ Q! U
[
4 _9 k% j% _4 l, T9 x# Xset 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)
! H9 c# U8 [% m# ]9 g! Bset k (k + 1)* H; a- t9 f- \" q7 _
]& X8 t8 o" T* k. Z
set [local-reputation] of myself (local)6 Q  D  m3 j/ I& V! n6 U" ^
end& v$ u2 J: z" Q( }, Q

! ^9 ~1 o% G- s% \+ b# T9 Dto update-neighbor-total
, {, L$ P7 R" `4 G; ^$ g' B2 b5 U7 s- i& Y$ `# ~1 }- s
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
7 A9 B7 D6 D5 ~( U3 m2 P9 T9 X9 D$ z) g) s: L* j7 ^" |6 }  D* E8 J
/ T/ O+ y1 x/ n% x6 l' {. M+ a
end7 `# L6 k5 @" U1 }8 i- k2 {
5 ~7 M8 z( q/ m! l/ ~& J& V9 x
to update-credibility-ijl
  ~$ X/ j; G! I9 I# ?3 a. t, h$ h# \3 r2 N" i* I0 S* F/ {9 u6 d7 X
;;
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。- u3 \* F  j* j  z& ~* Y) x& Y
let l 0
& E/ T4 W- b1 b; c+ B' w( d; v' ewhile[ l < people ]: h% T7 f. e& v, |9 y0 x( S
;;
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' h9 c8 s1 I, _0 }7 h' j2 \
[
# Y4 B1 z) _* A. Ilet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
4 A6 t. i5 D$ }( \if (trade-record-one-j-l-len > 3)2 u8 u7 }0 L3 ]5 X
[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
" P3 H" n' ?% k: ]' f$ ]let i 3
) K* R$ b$ w+ I0 H  f+ X* M: Slet sum-time 0
4 J+ [* W, g" rwhile[i < trade-record-one-len]
6 A2 p) H0 j6 m9 I! e& L# o[2 O' `  c* J# L4 Y& d+ r5 Y6 T5 U
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: \3 {3 n0 \% I/ j8 @set i
# l3 f; _: [5 @  X' ?2 z& T( i + 1)
5 q' R+ y4 U0 j
]. m: L# U4 }+ K+ O: c% R
let credibility-i-j-l 0$ q- ^) q- z1 W/ C% ?
;;i
评价(jjl的评价)9 P7 `1 A) W( R
let j 3
& y0 p6 _! \  E* ^5 i  l8 C* X! N& Dlet k 4% Y/ ?' D" `2 s. L* k  e5 B/ ~
while[j < trade-record-one-len]
0 _  g; p" e4 S' i8 r2 w[
! h5 k# Z9 ?0 |9 u4 w. m8 y8 jwhile [((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* p* v/ y; X$ Z2 k; ?/ ?, i  P
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); R6 T& E! N; I$ v, Q
set j1 s+ o$ G6 A" f5 B
( j + 1)

1 g0 |- m, ~# p- o7 w]
( @4 B% X7 c* u" h$ e0 j( l0 vset [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 ))4 u/ Y8 D* i  m: A* _

9 n. s4 J& t6 A5 J* Z2 x
4 e: S8 X9 ]7 X
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
* m2 m6 }2 d! q2 p+ u;;
及时更新il的评价质量的评价
# W8 Y- K, P2 a( L" hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) i" N6 K' |8 \: y6 o; K* h7 Wset l (l + 1)
7 [: Z* |& B4 u3 m' y3 x1 {1 A]
- |6 M1 T3 q' p  Eend
4 s( F6 L$ E. N8 ~# `
5 \  v* |- M& W6 R7 r7 t+ P9 N8 W! uto update-credibility-list1 }* ~8 g5 m2 h3 X' W1 y# F& R
let i 06 `" @; v2 D6 U( M  D( ^
while[i < people]! W6 W' ~) T! w6 f8 n5 b3 }
[
: y" {: h, i- V7 [1 D$ X' U) L& Blet j 0& R3 {, k5 {, W6 w. f( d
let note 0
4 T, e4 e9 z1 G4 b3 Y4 s+ r3 slet k 02 H9 L  |, j2 U6 R; K  m
;;
计作出过评价的邻居节点的数目
3 l+ k$ _1 N+ y9 }- Q8 B$ a) ~) wwhile[j < people]
9 _7 x* T4 {, {0 K3 [[
1 e9 \2 x2 N, F; |if (item j( [credibility] of turtle (i + 1)) != -1)+ U5 U& Z8 y: @
;;
判断是否给本turtle的评价质量做出过评价的节点
1 N2 o7 x* U8 t/ O+ z6 Z[set note (note + item j ([credibility]of turtle (i + 1)))
1 [& C4 k, Y7 A' g; d& t;;*(exp (-(people - 2)))/(people - 2))]

. r! s( T& @# [5 X+ ^set k (k + 1)4 f9 O  W: q$ D% c  A! H9 R
]' R+ R# y# ]& {5 `1 D
set j (j + 1)( p! `1 C1 p( Z6 _0 K* M* q
]: M. K% Q( Q, e0 a
set note (note *(exp (- (1 / k)))/ k)
% n* g  n+ K$ K  T7 b% t1 gset credibility-list (replace-item i credibility-list note)$ x: M& C* J  E0 p
set i (i + 1)
3 B2 u) G+ f$ W- D0 a# E]# R1 b& E( e% ?' U' L; ]! n2 P
end  Z% a$ O$ q9 G0 {$ [5 g
$ ~8 K9 L% G3 ^% T
to update-global-reputation-list+ m  a( r$ e& Y! B9 X# r. v$ X
let j 0! ^9 J' c, [2 n3 Y1 O( d- l' y
while[j < people]
0 K0 ?2 W7 ?# {3 c6 U: V3 ?[4 M+ R. H+ z  I- H& H; {5 ^
let new 0) L- N, R& z) C8 P* l
;;
暂存新的一个全局声誉" I8 ~/ F) w9 f1 L: s
let i 0
1 ^$ C# s) ?3 \3 v& z* Z* wlet sum-money 0
0 A3 r! u( d2 \( R# N4 K1 l' Klet credibility-money 0
- C5 Y6 Y7 }8 {9 D' s0 }! Zwhile [i < people]
5 ^4 P  V! M2 z% j  T# `$ Q[
% g& b/ a) G; f1 l0 y7 [  V" _" a  n6 aset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
( q2 L! d( K6 n' W" O: _set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))5 z' s  _! f  L5 p8 t
set i (i + 1)/ Z1 F9 ^% O% x9 e8 g2 \* T3 O6 {7 G
]; Z! o9 b- q2 S$ b; H
let k 0$ g5 O. @+ B1 i& N
let new1 0
, w& _3 }! b8 L4 Fwhile [k < people]
" v- H( B* ]6 ?7 O+ d9 @[
5 k# ^+ `7 P4 l2 g& Eset 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)% h; Z: i6 z1 y4 w
set k (k + 1)
8 ]1 C% S% M* \7 k. O]
& w* `1 ^+ L3 oset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) % M( ^/ I6 f5 _; L9 C* j6 \7 g
set global-reputation-list (replace-item j global-reputation-list new)
( D4 g" y) ~) ?! E. o% Nset j (j + 1)# A' X. d4 s9 t0 v/ J) {
]
0 Z' g7 J! ^) S3 v9 pend1 R+ m0 S7 G+ o, k

9 ]8 q2 a2 Y: t, E" c3 ~% \
! d) O( l9 [* G0 n$ a2 G2 e( a! Q5 f, x, t+ A2 G
to get-color
9 v) l5 t: K! L3 g! i9 _% s. |; k: n  h! L
set color blue
3 J& e) M* V6 _! \7 L
end! M$ F3 M7 A7 V. ]
# G, N/ f+ i/ l7 l  e  Y
to poll-class
7 w) b* M+ V: D% cend
4 S# F  `" _+ ~
) Z) a0 Y8 W. M7 P% Mto setup-plot1
( |' g( g( h: F3 d' I8 I) b) F
# o( S% o) j# B0 C: Uset-current-plot "Trends-of-Local-reputation"

$ N. p5 q0 C, I! T  q2 F" N
2 R% O) o9 Z! dset-plot-x-range 0 xmax

7 ?3 [/ V+ P# z( C# x$ a+ {& V, z; ~) f
set-plot-y-range 0.0 ymax
$ {- D* G" Y+ C1 b7 |
end5 v1 u3 q+ j3 b+ X4 I6 K# z* G. {

0 O3 s( O3 \  Z+ @" oto setup-plot2/ ]& y- i) w+ {0 q" V% @7 t
- r7 f8 o& U2 j: a2 R
set-current-plot "Trends-of-global-reputation"

" \( ]7 V- d$ A; I1 b% c8 j, T# ^9 ^- e8 w! s6 w" h) L* m9 G
set-plot-x-range 0 xmax
+ g# f* y9 D  n+ G- h+ b4 v4 k) e% m* F
+ J$ a7 s3 ~3 c7 _& x
set-plot-y-range 0.0 ymax
6 _% _) j" H8 J. L% @0 q* G
end5 T7 }" n. z* N' H- W! d8 {4 {% X
+ p/ f3 o% O- n0 r
to setup-plot3
$ N/ y$ P+ o) {- V" Q/ Y" y
. z4 c( b3 S8 E: d* M( Wset-current-plot "Trends-of-credibility"

! o7 w& H" @. ?! c- V) A
& I7 `8 ]1 H$ B2 h2 Rset-plot-x-range 0 xmax
0 @( S; a. a, ]: f" _# K1 v
6 x% z7 G- B4 x1 J4 U- Z8 F) v
set-plot-y-range 0.0 ymax
; z: d& R% l! H4 w5 V9 N  {
end$ ?2 y- c+ q/ f, t, z* F* K9 u* K

/ v# j( C+ H$ z( S& Kto do-plots
" q6 J8 P( ~' m  c, e6 d- dset-current-plot "Trends-of-Local-reputation"
- g& f/ V/ _& hset-current-plot-pen "Honest service"8 ]8 n" T6 g" c' [: J! o+ I9 K
end
; E3 w) P: e: o1 ]  w& P9 v+ y5 K7 p, E6 y' o7 y4 P+ P; Z
[ 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.
: l: L' T+ e3 w; M3 C' A* B8 j
' E1 j) \( l, ?# s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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