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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:, t! Y( T! a, s# ?  A3 E
to do-business ) h# d, S( s5 |; N1 q
rt random 360
  m) Q% s4 t* T" i* O fd 1
7 s0 t* }% U+ g  I+ i$ j ifelse(other turtles-here != nobody)[
6 N1 t/ d* Q/ `% o; 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.- x! n5 F( j6 u  U
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self      [# Y% J9 H6 y: X0 g
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer5 U5 x4 k( t  i. J3 ?9 P
   set [trade-record-one-len] of self length [trade-record-one] of self! c: P6 j- C& q) Z# h
   set trade-record-current( list (timer) (random money-upper-limit))1 U' g0 X$ P0 I' |) f1 w
) U. }) L& \2 {) e+ E; ?" X
问题的提示如下:: B+ Y/ k% `# E
: x  O" @4 e$ B4 F* e
error while turtle 50 running OF in procedure DO-BUSINESS
8 A5 S' `5 v7 c4 q! v. E4 D  called by procedure GO
, l& e5 n4 F/ Q9 t/ Z: ?0 B. fOF expected input to be a turtle agentset or turtle but got NOBODY instead.1 {) A- j  O$ V1 H" n
(halted running of go)
7 n- h4 V6 P; f$ \" X1 d  f$ Q& G1 T
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~~
- g6 t8 i+ N# }' t4 U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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参与人数 1仿真币 +30 +2 收起 理由
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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% n$ r. J% J( |% |  w
globals[2 _% G8 t- _6 K6 U" g: D( K' J
xmax3 K# e5 v/ y) Q% W
ymax( w& \+ |* R$ M0 u6 _2 S+ b5 X
global-reputation-list( G6 M3 l' R. _" h
) w( f3 ?* u8 s! l
;;
每一个turtle的全局声誉都存在此LIST
. K; k9 k6 S1 ?( }1 O, ~" \9 J  ncredibility-list+ e3 F: R: ]+ b4 }: O
;;
每一个turtle的评价可信度$ Y2 Q7 d0 E( P. l1 s; M
honest-service
. @" W  ?) B% k* q) runhonest-service7 O; _* @; F, c2 W4 }
oscillation
4 Z" @7 h' @  O' i, o7 _rand-dynamic0 @6 g" d, E: c$ C
]+ |8 N; q" Y7 N3 ]- m
4 [3 {3 q& ?. _2 q" [) D5 M
turtles-own[
: k6 T3 {; h7 a) _trade-record-all
5 C/ I! b0 `9 _$ u; M$ b/ i;;a list of lists,
trade-record-one组成) e( V$ [8 @% K( {: U4 E  m
trade-record-one
* O5 d9 C* g1 d;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录- e& J! F9 \- T3 w  x, L
3 `5 C6 Z( Q: }: 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]]
* L# ]0 _! W6 D* e0 rtrade-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]
' V. T! J, A% Z$ s% l$ xcredibility-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
- h0 \/ D; |; O3 X) Mneighbor-total, w' y# d7 p- J1 O' z3 R8 l
;;
记录该turtle的邻居节点的数目. \  w+ m. _) K) q; T
trade-time
6 G3 u, c$ M: z;;
当前发生交易的turtle的交易时间" A( ~2 _+ J6 Z. N6 Q
appraise-give4 O& a& B$ z+ }! f  N
;;
当前发生交易时给出的评价
/ n" P, G" \) f3 v# ^. a% qappraise-receive
! U! g% N3 }1 D+ R4 S: b- V3 r, l;;
当前发生交易时收到的评价
3 J7 Q9 X2 ^6 x4 q) cappraise-time% ?# Y" o9 }0 D- M/ f8 a6 N$ b
;;
当前发生交易时的评价时间; }! y/ p# z$ a* K
local-reputation-now;;此次交易后相对于对方turtle的局部声誉9 o( ]# E* o3 Z. w; `  z
trade-times-total1 I9 \8 ?! H$ K) O2 M8 t3 b
;;
与当前turtle的交易总次数  ~0 c6 }' ]% ]4 c+ `5 E- o
trade-money-total
! C# p  I( y- u5 _1 B4 x5 U9 \9 X;;
与当前turtle的交易总金额( z9 z+ r; y9 d8 j
local-reputation
* o& v" j" E% {3 {global-reputation. [. `/ I! a. I! Q
credibility/ m0 m  J5 c* g- `0 R
;;
评价可信度,每次交易后都需要更新
# D% U; X7 q- N! q  t, V4 Scredibility-all$ J) r2 L. r4 @9 a1 F4 h7 @7 [% |
;;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8 v! B3 p7 z8 _' b6 W+ C

6 [, B' R, Y' P% c4 s4 S;;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
6 e8 l# l; v( ]credibility-one6 s# i" v: L9 |( R5 a
;;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
, X% M+ ~" C6 Y5 b+ N6 Qglobal-proportion7 Y: {) S7 u) z1 |
customer
" [* L) v$ T) q- ]/ Kcustomer-no$ t- R+ D5 d& i7 i" F2 A. W7 [0 o
trust-ok
1 \1 r% h9 A1 o+ [  h( ~9 mtrade-record-one-len;;trade-record-one的长度
+ w& ]0 J* a* ~  F, }( V8 t1 O; S]( Y2 W4 a9 b2 h7 v( [  O: X& A0 Y

  I& B' c  i! b" K+ o# G;;setup procedure* o+ h9 |' o! f- B  C, M+ C+ b. `9 A

& @7 ?8 z5 N& V0 w1 \/ E+ S. tto setup/ [( D6 J1 e) p  n
& y1 J) R* w/ x7 k$ l
ca
# @9 C" Z/ X" D5 T% N- ~8 A

5 D. s' M2 f3 h- V* Jinitialize-settings

5 ~# }& C0 P5 M- m$ `
" O' {7 G) }* h" Rcrt people [setup-turtles]
8 s& H9 l' S/ X! j" e) ~" S7 M
- {' F' A, N6 A) M$ D) R4 e
reset-timer

# X- c0 K% s2 s, h# b( V7 B0 E6 ^+ Q5 N) Y0 G* _
poll-class

' ]% \6 J5 r4 r
: p( J# \6 Q. E8 u6 k  ~9 Wsetup-plots
/ @* z% N& U  q0 O7 b
( j0 L9 X  Q/ N! c' ?( H8 G7 `
do-plots
$ I' s% i/ s% I) b  L3 |& v. @: c- k
end* S. }4 Q, k  C! C  U. M
- C. q0 V; [! K! w
to initialize-settings1 {. }( A# R3 y- h9 q

; m: D& F) ^2 Xset global-reputation-list []

+ s% _  r) ?6 s8 W( Z  b  Z3 |2 y: R) I- Q$ a! X5 n4 }
set credibility-list n-values people [0.5]

/ ]7 A1 e6 u9 |5 z, S0 a( q1 P4 k7 l, q3 B& I( ~* X
set honest-service 0
0 G6 D1 H' R4 I; J

$ b. R: T' P6 G! g; pset unhonest-service 0

- F& Y  `  ?& g2 Q/ i) p. u+ |- e- u2 K+ |) z
set oscillation 0
7 U9 ]0 w+ Y4 }5 S+ N

9 p% C0 \) L% G! Dset rand-dynamic 0
0 V. Y8 j3 Y/ ?2 G9 K8 o2 q
end+ w2 O0 u% F7 U9 B
; _7 P- o7 E$ e! K- h
to setup-turtles
. H. z; S  e( I+ x, _set shape "person"
5 [6 \; A' x5 Z- ]7 Z, Ssetxy random-xcor random-ycor
) O8 a6 O& n+ G  {, w- d9 ]) u) l+ L- {' m- lset trade-record-one []5 z7 g- G7 S% G7 J

8 @2 {# B! W2 t- ~set trade-record-all n-values people [(list (? + 1) 0 0)] 2 w: r8 q0 p+ z( b% d4 o8 G, G

, D( h* u: H2 D  S- qset trade-record-current []9 N3 {  n- O0 [* i1 W  J
set credibility-receive []- Y" W5 U! ^+ W, V$ L& U* |9 X
set local-reputation 0.5, O: }5 i: x/ a0 g8 s
set neighbor-total 0! o, E# J, N# D$ s7 ~! ^
set trade-times-total 09 @: g7 N2 q3 e. c5 b4 f9 t2 Y
set trade-money-total 09 J# T: c! E+ J; v6 |1 c  ]8 Q
set customer nobody, v/ |  G9 d1 @" E" b
set credibility-all n-values people [creat-credibility]) ~8 L/ x8 G  W1 F
set credibility n-values people [-1]- h8 k3 b; R5 I9 \2 Y9 F9 f
get-color
, o+ o: c2 e& r1 R7 Z& Y8 W

( S: ]- M- l+ h/ Y" @7 F# mend
- j5 U5 \' l5 E! C4 b1 F; S
: _6 m1 Z. _) c. G8 |4 I- dto-report creat-credibility( w, u( X' _0 u. c* H! x
report n-values people [0.5]
& u% N- V/ y" A7 ?end
/ G# o/ d, Y, F& V( U6 j# N/ W% g; f$ K0 ^5 V+ u
to setup-plots
5 J0 C4 H: y' l- c# O% J2 \" q2 N
set xmax 30

) q0 l0 ?0 i) d- C- [
$ a1 S/ m1 N3 y3 f' qset ymax 1.0
; A. J' {2 A7 v
* a6 T4 B, U, R5 y* k, `: M
clear-all-plots

1 T+ ]- k4 H1 c; \' n. Z& S& T" Q2 T+ T0 \- N5 e6 g$ v
setup-plot1

! h! b/ p" z, r' C# m1 Z
3 c; i* _3 s) O: _& fsetup-plot2
; x2 E% J; [, n
$ T8 i. v4 V. D  u# _
setup-plot3

' M) m  g: i7 n  C1 Vend9 O1 ^- B4 w1 w  y" _& m8 r3 t% V
4 v- g$ d. _' Y; g) B# Z
;;run time procedures
. \9 V+ e* ]" ?2 [" B: p9 q1 K4 u$ o
to go
4 t. |/ h6 C. ?: f0 V7 [( G9 R% z$ t: x7 r5 c+ q( Z" }  }7 l
ask turtles [do-business]

2 S* U2 t* g, y8 b3 ~$ Hend9 o9 o5 S4 A, F1 K. G
( H- P( h0 b' D7 o3 c* G) F
to do-business
5 D' a0 g! V+ e' h# s
0 n% P. V- ~* y3 p$ v4 A' }
5 `6 [: ~5 G9 p
rt random 360
, Q9 ]7 C1 E" X3 T# H7 ]
! P7 D+ N) z1 Y! |
fd 1

0 L) h' @' g) k" `
9 c5 U# M( T( v* l& Y! Qifelse(other turtles-here != nobody)[

3 ]! t# c9 x. A
* ]6 G8 b5 R# F/ N) y' Iset customer one-of other turtles-here
& X% O" l, ~# Q5 \5 h8 M  B. L
1 t; G; q. t$ ]& x1 E& J4 ]
;; set [customer] of customer myself

- ^: `- I1 ]) w' X! X. f
9 t( f- w, q. s2 y% D: e% Rset [trade-record-one] of self item (([who] of customer) - 1)/ n4 ]' w9 x, r
[trade-record-all]of self% n) V5 X4 V# u- T: s( i4 E, R; D
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

' k- S& B' r. r$ T: ^/ D
! U7 C- O; k8 ?5 Fset [trade-record-one] of customer item (([who] of self) - 1)1 v8 {. ]4 F/ E- p* Z
[trade-record-all]of customer

0 Z3 h1 @+ u. t$ d3 Y) F' q2 S, r4 m$ M
set [trade-record-one-len] of self length [trade-record-one] of self
2 d* O1 [$ `, w$ h1 P

+ t7 b: F2 x0 \& Vset trade-record-current( list (timer) (random money-upper-limit))
# F0 i$ u5 Y4 l5 q- C9 Y2 o
, z; [/ S* b; o& A6 D. H+ p
ask self [do-trust]
$ d/ f" A% G8 G' a* A1 r$ s;;
先求ij的信任度/ Z' j" H/ h  W6 T7 W9 @1 f

# ]0 K; Y+ S) \) ~6 l* e  {  fif ([trust-ok] of self)0 i( J- O& d/ }, j# [
;;
根据ij的信任度来决定是否与j进行交易[
/ z% Y3 L$ K. |( F2 s2 q( ?3 Q: Rask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
. v8 ?- G; [& L& ^2 t6 }
( R% W* E: A' U+ I: v. W[

3 |3 d( p7 ?) y& J- _! e+ o" r+ ~( O, q/ l9 Q$ s' f) W+ c9 d) c- [
do-trade

* r! p8 Q' A) s/ F- |+ r  g( G
" d  x! O1 v; J1 J$ r1 s" \update-credibility-ijl

2 R5 U9 K4 z  K; ~6 {9 S  b9 F7 q; W+ L
update-credibility-list* ?- |* N8 l! o) x/ @9 v4 h5 d
8 ?" _4 O  \+ G3 `5 A" s: m: F

) M0 o5 _$ Q7 I, Y. p3 wupdate-global-reputation-list

( ^5 A- e4 v" w  m' m/ o
9 f) V; V" F7 q( G" l# spoll-class
5 z% `8 L/ p  c) ^6 b0 f

' v9 w! z8 }9 kget-color

2 o8 W2 r, n3 k, T& ]0 A( ?
' Y; p& n2 q& i; G. d/ J4 h]]* @8 U0 T9 z% L7 S0 P
0 w6 z( R( B, g; n. d6 o4 J5 K; N
;;
如果所得的信任度满足条件,则进行交易
1 \/ w) g" e/ G' @3 Y' L0 x% _' R  Q
[
5 S  J, Z0 l/ L( ^; K' B1 Q
& h6 d( a' k. d: K8 a8 v: d2 v
rt random 360

# U; ^- A, y/ d! [1 Y  h" V- o) s3 l  a7 Y; X+ _) s
fd 1
' p' Z6 l  H2 n9 l, F
6 a% \1 y7 N( `; a1 }! g5 e
]
, b6 c( ]6 f2 D/ T! Z

1 c. h/ V6 l; j  N9 q  o4 Uend
2 z5 E& l4 q8 O& o; I. U
0 A. k% X. V; E6 T9 B7 Y
to do-trust
/ Z8 y  {7 }( R! P3 W; Yset trust-ok False9 R" q+ O- i+ s8 `3 J5 D
2 j3 L  a1 p" Y! H( t

/ a1 m' o& f7 mlet max-trade-times 0
2 B8 m9 r3 h! M2 }' Qforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
/ i& i3 w/ A+ y7 Q' L/ i5 O% v) }let max-trade-money 0
! {* M$ N8 h( ~5 }8 O+ vforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]- F! U! C2 F, @: }, J2 B
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
5 _/ z0 i; T4 i: b* o* |" B
7 T6 r& p2 ]8 z
4 X2 _$ V+ ]; h
get-global-proportion
  B' v2 g! F. _8 ]: g  olet trust-value' z  b2 }5 e/ F" W
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)

) l' v/ p( r8 C) Hif(trust-value > trade-trust-value)
, K; I9 L+ p7 Q: A1 R; [% X6 Y[set trust-ok true]2 H, T  S" S: t% c
end
8 p0 E/ e0 x& `0 B% y$ _' X, ]3 @* B9 b9 L* C
to get-global-proportion9 E! f+ K8 W+ }4 q9 b5 Q# `
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)  g" _- c5 I' l/ \) F% F
[set global-proportion 0]7 P6 g2 b* b' K+ Z# O- U: t
[let i 00 q1 O# y% Z% R* e8 p7 h
let sum-money 0# w6 v5 V: e1 ?  J3 q
while[ i < people]' F% m" p& V$ s& C. P; Z
[
# R% }9 n: w, Xif( length (item i+ h# e6 z4 Z+ E& z% C
[trade-record-all] of customer) > 3 )
6 N0 I! O$ e" {8 N: w; O* a
[
3 [+ \3 N) m$ v+ E* @) wset sum-money (sum-money + item 2(item i [trade-record-all] of myself)): D  _# j: r8 v) }/ i
]& z& O; M0 X! ~
]
0 M7 F2 K' n% `8 u; slet j 0( K1 Y* B5 Y, l
let note 0
& w6 h% Z! S* z4 b% s( r/ Hwhile[ j < people]
( h' P& f* L" C. d1 ^[7 {$ W; Z2 e! T0 m! j. _
if( length (item i
, h* `4 K/ Y- o4 J) i[trade-record-all] of customer) > 3 )

- }' T+ U; _4 I& w% g7 n[
4 f$ l  j/ f* v$ Xifelse(item ([who]of myself - 1) [credibility] of turtle j != -1), A" _9 w" P% S" A( f
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]+ j  ^; U( Y' }5 ^$ t
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]! I1 H# w5 f, e% d6 X* r
]6 S; c  v. f5 W- Q5 K) r- k
]
) ]% a3 Z' X/ U: L; P0 zset global-proportion note' c4 l& H5 ?% |! @0 I& Q" F: V
]
$ G  ^6 s, `+ f" a* dend
" |3 J, y0 U% I+ W. `
# m# E: N" K! W2 @# kto do-trade
3 ~% q; u* Y% Y# S6 W+ |;;
这个过程实际上是给双方作出评价的过程2 c; E' R. w0 v' U: ?. J$ L* v) U
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价+ l/ ~9 V+ ]4 _& C  A6 G
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价6 i+ g5 V7 v; y" w% I# ?3 J" `
set trade-record-current lput(timer) trade-record-current
! L- U$ X% d* S2 c2 ?;;
评价时间8 y2 Y, l1 Y* u8 R1 X( N7 P& P
ask myself [
9 S1 n2 ~7 e, C( p9 gupdate-local-reputation, O% F/ U0 U8 C. G* |* X7 C, e& q) r
set trade-record-current lput([local-reputation] of myself) trade-record-current
; s, J( L" F+ j" M! [2 M0 |5 z: w  t]* t& s3 q7 r. e9 M( u
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself5 b1 c  x7 S  y5 N$ ^
;;
将此次交易的记录加入到trade-record-one
& p5 x; `2 O. W2 L  Iset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
# P' w2 J: p6 q! N: c, }9 k0 Olet note (item 2 trade-record-current )* o- X$ v3 Y, I. A5 _
set trade-record-current
! J9 n1 u8 D8 @' z(replace-item 2 trade-record-current (item 3 trade-record-current))
" ~1 N+ _- X- H3 M
set trade-record-current" T( V: v  r& x  g  J# p+ s9 [
(replace-item 3 trade-record-current note)
4 C' N' F' X) Y* M0 _
5 F6 n. m' a) @% v7 r: h: k# K

; F7 e$ G' g: D) u/ G; C: Mask customer [
5 c2 A/ R& j0 _. w; f7 x# dupdate-local-reputation6 r; Y) S  ~$ u, D
set trade-record-current7 l2 T* D! K$ p# P
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

) h1 q; q- y9 D: ^- d3 b$ F% v]! n) i  e$ |1 }6 r1 q7 m+ j# `; ]

- w( R; O$ v' i) s4 ?6 U

  @9 z  c( B( fset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
! n) D, b/ `3 J. g- a1 y

9 o; [4 S& R1 A' f6 Sset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
0 N; s$ H% U2 M, m1 V, y# R8 {;;
将此次交易的记录加入到customertrade-record-all3 V" G: k$ J/ ?  m3 L
end4 K7 T9 O& C& I3 \1 {# w
2 O( W8 g: d7 H. o/ c- r4 L
to update-local-reputation
$ t- J9 u( f; J" ~9 Pset [trade-record-one-len] of myself length [trade-record-one] of myself" |5 E" Y; C; |3 s
8 i) T( U8 i! [6 L( M* x6 b

4 ?& N6 y) A( x; g6 c8 L;;if [trade-record-one-len] of myself > 3

  z" f. t8 W, L$ X1 ]update-neighbor-total
' J4 r" E) U8 h+ l;;
更新邻居节点的数目,在此进行- W& D8 I1 e1 E1 Q$ Q7 M
let i 3
! a8 }3 S4 C, {9 Ylet sum-time 0
+ l0 x( p0 a9 N4 K( f2 [while[i < [trade-record-one-len] of myself]: P% E, f4 M; o; K; F
[' A# o. E3 m. O4 x" Q
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
1 U  Q! v( a3 L# ]set i
+ ~0 M. ]* M! s( P3 t( i + 1)

2 E% s$ d1 X& x5 z+ k* [* [5 H]6 L6 V, z! |6 u% h0 I6 z
let j 3: y1 ]! ~& ^" ?! L4 J! n
let sum-money 0
8 {3 |5 d# G2 o7 ^while[j < [trade-record-one-len] of myself]
3 [7 w" i8 |+ i; _: d) E[
2 e* I7 [0 c# [+ k  Q+ K& j: qset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
* e' U3 ]" d, o3 ?3 k7 Iset j5 H4 E9 j0 Q, }- T, K3 K
( j + 1)
$ m) c5 z# @( Z3 e2 D, Q% V* x" a: T
]
4 ?+ E3 d; N0 V9 X( qlet k 38 m4 T2 w6 {) q4 l
let power 0
: M9 g; k1 t# j7 ~, olet local 0
& e7 w0 D. b* H, d' r0 [7 Ywhile [k <[trade-record-one-len] of myself]: t, R  k0 Z( P( V, k+ V) |9 y3 R
[
- N' S. _  N+ ^& Pset 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) 4 g% O- x8 Q" S; a5 p/ Y
set k (k + 1)) N( J+ r" g' \8 I
]
- n. I! _: a; j% ~set [local-reputation] of myself (local)
5 x/ t. v, [  V& k& i! T$ [5 [end
5 g! b4 u7 K5 V$ B2 K* m* w
% U/ F# b) @7 @to update-neighbor-total
, T8 f  l. E* p0 t% r1 K3 o2 d* S
# n0 U1 i; m6 N4 s7 Yif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
2 A: Z: q% H  l8 W4 J/ d$ w0 z' M' J, [  Y% ]( k! C0 ~% u
% ~# i# Q4 @6 y1 A
end
+ \: |+ [( b- m: D; |, ^
( |7 ^4 ~6 e, g# ~4 R8 m$ h- @, Sto update-credibility-ijl
: e8 k" [) M6 M4 Q8 |  L0 \0 }9 B  p$ H+ _$ @- v2 i
;;
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。
2 z+ X- z+ J3 n3 n% glet l 0
! N* I8 z# v+ q6 `while[ l < people ]5 ~1 G: K& [+ h7 X; \: v% Z
;;
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/ X0 e! E* J5 {5 i4 P, A- H+ l
[
0 x# V' r2 u: ]; c. H* n: L: Slet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
: a. p% R! Q. h* hif (trade-record-one-j-l-len > 3)
, E. M! q0 U9 ^  Q9 F" E6 F+ J[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
4 D$ v: s8 h/ s- |2 r# N9 elet i 3! _/ d: X% b; q) @4 d) f/ @, I
let sum-time 0; ?9 Z- V" U  ^+ I# O- n
while[i < trade-record-one-len]: \: X  n- ~& I* u: o4 b' Z
[
# t$ a2 A- u7 ~. [& \set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )) B, L) T# A& s) r
set i
0 U- u3 m( e' k. Y. N0 \( i + 1)

; |/ D" J$ W5 s+ X$ Q& K]" B  b+ M% z" ?2 W. w
let credibility-i-j-l 0, e- ], A3 k3 B, K2 L; R3 k
;;i
评价(jjl的评价)
' x* w, Z( f; T0 Q) J+ C$ k: plet j 31 {! ]- w" T" O" s! s
let k 4+ p7 I% [/ F, |: a
while[j < trade-record-one-len]
3 G3 y" l# L4 i) @+ q6 g* t- ~[
2 k, s- }' W. v+ b- E; rwhile [((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. _: y& ]" F- n/ _
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)
+ b% ]$ B9 t- B* I. e+ D' Rset j
: a) ?* N3 O0 r! w8 G7 m! f9 c( j + 1)

* J4 c* C+ V" }8 s]" y- V  Z" W% ~& @7 z- z/ m6 @
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 ))
) |& T  h/ y, L" C( g
& x4 W; [& J4 [) f9 ^0 l1 Q2 a
( M6 I$ D  g$ J8 K0 {' S2 W
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))# {+ D3 S" _# F! R2 M6 A
;;
及时更新il的评价质量的评价
& K/ k( D- i6 Y/ H* c% ~# H) Yset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
. a$ {' _% i! R, m$ W; m2 @% O5 Lset l (l + 1)8 i4 ~& {4 j' p+ n8 Y
]
% h" Q2 |/ A- X6 c; Wend
+ F* T5 j; r( k0 H; w% U# z( i# I% K4 [: O! q
to update-credibility-list
8 @' |& h8 I3 U& D+ elet i 0$ F: q; B& f1 O+ ^0 a
while[i < people], M* l: ~) _  {% S  K
[
5 f1 T, x# t" e1 U" S# q9 ~1 L9 F' y, O. `let j 0
( j9 G0 g2 N3 ~0 ^9 h# clet note 0
: E2 {; ]" E, I! b6 tlet k 0
  w+ P1 k, d. d$ U;;
计作出过评价的邻居节点的数目
3 x/ T0 \! {5 Y; I" e  x  Q# qwhile[j < people]
8 K& I* B+ n( y% [& |- t' }7 n[9 C1 ^1 j( j9 _' ?$ o7 H$ w
if (item j( [credibility] of turtle (i + 1)) != -1)
' o7 V4 D* ]; G1 N# X$ h;;
判断是否给本turtle的评价质量做出过评价的节点
4 p4 |# ]) p5 E$ b[set note (note + item j ([credibility]of turtle (i + 1))): m+ s, N" U# y% J* E4 v
;;*(exp (-(people - 2)))/(people - 2))]

" C* {7 a* s; F! Vset k (k + 1)" i1 b1 M/ Y( ?) u  O) G  B
]
1 z3 e# q5 A2 b% e1 I) D# G- @set j (j + 1)
3 l# ~5 z* Q/ X' S* q], ]) {9 ?& l1 ?5 P2 k
set note (note *(exp (- (1 / k)))/ k)
+ M0 G' n5 {2 a. s, Yset credibility-list (replace-item i credibility-list note)
4 z) r2 E9 H0 dset i (i + 1)
2 V% ^2 M; U: M# V* X]
+ J+ M8 W# y$ q4 ]& \7 \end# q6 B! O$ k: L3 ~$ d/ o% S% a0 [

& R6 |3 ~' {; r3 J0 @5 Zto update-global-reputation-list
' u( F* b  o, P  o2 C5 D' b6 Ilet j 0
+ O0 ^- L2 i& u3 c. k1 q' Twhile[j < people]
2 L/ I1 A% ]: d8 F( e( I6 L8 c[" c) T. f- u  @# s
let new 0- D8 v1 E5 e5 C9 T- c! Q
;;
暂存新的一个全局声誉. O# I% \) R3 c. J5 b" A
let i 0( u8 d4 X/ _* [  z: H
let sum-money 0: e( k/ l- }) z
let credibility-money 08 R4 M# q* G5 h
while [i < people]
/ Y9 @9 k$ ]6 A, d[
# D! Q, W, O" [6 Cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))+ @: X4 E) C& Q& i+ v4 W
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))- m5 p. N$ E3 ?& j, Q
set i (i + 1)
2 D7 G' T! o# `]5 H1 `/ _! L: S) ]) w; [
let k 0
+ m% Y  Y" m9 |; W6 F6 Glet new1 0
+ k5 R3 z$ t% ?- a: }. Pwhile [k < people]& ~  c; F: @2 h$ D6 C9 D' ^
[
0 J8 y2 T; }  k" R. x  @set 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)
) E0 n$ ?! Q) N/ D0 F% b3 d1 hset k (k + 1)/ |" C; h+ C- o0 n) B! }
]3 Q5 a& n7 K' _# M
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
6 J1 G% ^! o4 Iset global-reputation-list (replace-item j global-reputation-list new)
( d/ I. U: L0 q$ d  [set j (j + 1)/ n0 l, t0 T( j5 l: Y5 U
]4 Q% m# Q6 P6 f" x; ]" m- `
end
. O$ e% _3 @" }$ E: a  [
9 v% g8 q7 k# x6 H/ v1 D  H  z% z6 Y5 |* O

  @) @' l; Z/ Y0 [to get-color
5 u3 h- A* |& G8 M1 B/ R" z- L% X; \: p6 Q4 {
set color blue
5 I: I6 f/ b+ a, S8 v
end
* g- r; ?& s# I( r# ?" v  y
& B& N! ^" g9 W" Hto poll-class
# L  {# M. D; W1 H9 j0 c& I: Eend
# P  [( a7 r' r! A5 q8 e: I8 ]! [* \0 [( E
to setup-plot1% F2 o* ]5 K6 b! y( o8 M

% N3 U4 _  l6 X0 f7 w* Z8 Pset-current-plot "Trends-of-Local-reputation"
: K0 P, a: [$ [2 T" F8 _

8 ]1 `* Y$ P6 [4 H4 Dset-plot-x-range 0 xmax

4 g  u, T$ D! k+ S( u3 j: S0 N* k. h% h
set-plot-y-range 0.0 ymax
: N! y% U# \) {- |6 N
end
. `. D. T/ y; {- Y" |6 q2 j* [, J/ Y% {/ B9 M* y
to setup-plot2
; d1 W6 i2 L, d& F- P7 p
9 }/ [( s3 r2 T% [7 D1 D2 Z/ Qset-current-plot "Trends-of-global-reputation"

2 F- j$ t' m: s! O
; v! ~: w0 Z2 u  W0 m. Z5 f$ q* ?set-plot-x-range 0 xmax
* R( n! _3 S$ D
" y6 J( @& K! f. m3 B
set-plot-y-range 0.0 ymax
; [1 c* k6 B2 J3 k, C
end3 t) K) n6 j( y7 m3 ~& \0 Q

4 W; ~" a) W' f; {$ _% B) F! {to setup-plot3& |1 j- s) f; a3 h, `. v, N* |+ K$ U

" t. s) G) ~- lset-current-plot "Trends-of-credibility"

) Y+ A5 E1 ?/ S$ G
2 [; v  |8 k, Vset-plot-x-range 0 xmax
& y8 F( v- |6 ]; C) ~, F- a
% r4 w: f" Z$ [* q
set-plot-y-range 0.0 ymax

) d: S- M9 e/ @$ F# @& Rend
/ Q9 \+ O: c. {1 Q/ F7 O* P4 J  v% z& \( G! h: }, l
to do-plots
* i. `/ K% G% q: \. ~* b  cset-current-plot "Trends-of-Local-reputation", E, {4 Z5 U) O) @$ E; e2 i0 Z
set-current-plot-pen "Honest service"3 Z& S# @5 a. T( b2 G% s
end7 {0 r+ t6 _; {+ x6 H1 v9 k

* h" N, L5 N$ p# ^6 C" L$ k[ 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.
2 Q' R' i8 B5 T9 N( R0 |
: [7 H) I3 s- n! 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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