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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:8 L" |: Y% ^" y2 K: g3 @6 [9 g
to do-business 8 k  F! x+ N# C7 i$ v; K0 m; _
rt random 360
' j" V% Q1 T$ Z2 l) P fd 1
9 w8 p0 r7 D, } ifelse(other turtles-here != nobody)[
& ~5 K% n( F9 p% w# y   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.
2 L" e: R( W. @5 Z   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    6 J  r2 C" H9 J# M2 x; b$ K
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
* N9 w) }) O% d  M  ^/ b/ \' ?8 {   set [trade-record-one-len] of self length [trade-record-one] of self
5 i4 V6 J' C( k7 i   set trade-record-current( list (timer) (random money-upper-limit))% \- s  v  N4 Y
9 C+ t7 }$ p/ Q
问题的提示如下:+ ]$ A/ Z4 M1 b1 z
. r, g4 r- O5 O8 W7 Z' y; J% Y
error while turtle 50 running OF in procedure DO-BUSINESS
* v% P6 g# o' F1 ?  called by procedure GO
! _" Q' Q- \* l+ N0 `OF expected input to be a turtle agentset or turtle but got NOBODY instead." }. x9 C9 ^) J
(halted running of go)
% F  i, Y* ~' P5 P* [4 }/ d) S
! @' p7 p5 R& Q* A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~~/ L9 M5 y# ~2 E+ 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& @8 r3 ?2 y: J; L
globals[
; [7 Q8 ^: K3 o0 A2 H+ e6 g/ G0 X6 hxmax
/ U( s& P$ d9 X, i" I2 |ymax2 e) ~, J9 p4 F( c& x- q: N/ d
global-reputation-list) b9 |. r8 x( W

: y2 S  g/ D: v! _- e8 I1 o;;
每一个turtle的全局声誉都存在此LIST8 H/ C6 K9 D9 L( L8 L5 C; T
credibility-list
' O2 i; `+ U% w8 L;;
每一个turtle的评价可信度
% i/ l* {4 o& d: s" }# ]1 |honest-service
. p" e: e; Q  Q+ q9 y' w, `unhonest-service
: I, n* y' d3 C( f! woscillation
# q+ _. J! U8 c' j5 qrand-dynamic
2 T6 N& ~- r6 Z& A* l% k; T]5 }5 b6 m+ L3 z; p

2 l$ m- h. I& L  H+ \turtles-own[, q) l4 \; D7 t" U8 X
trade-record-all
& T/ V9 \1 q) N0 p7 c;;a list of lists,
trade-record-one组成
7 F8 |' b+ I( D0 d" `trade-record-one: U6 P$ [. O5 O1 X1 L0 r: W
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录6 x+ p7 y. J: O

3 }. R8 r9 d! y;;[
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: {! V: K, f6 }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]9 n% C" z4 {9 @3 o
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! o! S& M) K; H* o+ ^! `' \- C* J
neighbor-total* Y! ~/ }; b& ^# U; s# `
;;
记录该turtle的邻居节点的数目
6 C% d6 J" V3 v  a1 C/ o' utrade-time
3 @. C4 g$ ]& q4 q, e9 V;;
当前发生交易的turtle的交易时间* m% U% ^/ H% P$ v
appraise-give
0 e' X7 i  W& v;;
当前发生交易时给出的评价& Q4 C' }5 L0 Y
appraise-receive/ x+ N- h9 _- d  ]6 @/ \* d5 z
;;
当前发生交易时收到的评价9 Z# ?/ ~  B* Z3 m( @
appraise-time
8 ^  g0 b% G- k" c6 m& \;;
当前发生交易时的评价时间& @0 {/ L( S# c& I0 F2 `6 J6 f" J
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
! N5 e2 ~' K' M5 `" ^. Z" l5 gtrade-times-total, r. v9 j* @3 }5 |; r
;;
与当前turtle的交易总次数
- M3 x/ M# X5 c6 K2 w  _trade-money-total% p5 q! t4 X$ V6 @
;;
与当前turtle的交易总金额
! P7 r/ e' z( s/ z3 g" j- ^local-reputation7 j- U3 H' d7 M; x. E/ |
global-reputation
- f' |; l+ C" X) B9 H' x( F3 s1 c1 Jcredibility; P% _4 o( y1 R3 f
;;
评价可信度,每次交易后都需要更新5 N+ c* [. k; p9 p
credibility-all6 I5 ^4 ^, t$ W. I3 A+ c
;;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
) a7 @! R- J) G$ d; d
; e; I, D' j1 l;;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
; A8 a! `; S. P8 T& h1 r/ scredibility-one3 a" A" n6 O3 T$ [- r& [+ U& y
;;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& _& E& U+ D( o) X
global-proportion
+ P9 k5 u5 P! F# e# F  Scustomer
) ]9 p4 O% m3 I0 g) V. w$ U3 ncustomer-no: G5 B! p2 e5 C0 I, Y
trust-ok
- |2 v6 S5 G  U! G; z, ~+ utrade-record-one-len;;trade-record-one的长度' O: P$ \/ Z$ o& X
]/ W# O* U) D6 _/ `* j* f
$ u3 `5 u1 B  r/ a7 b) v
;;setup procedure9 p. K  c* W+ X1 S$ H0 }  K

" @% f* P% r% H% e  Lto setup
8 d+ ^3 L& c% h: ^$ }$ w/ |1 `, V
6 D; O' ~9 c9 v+ P8 {8 Uca

& w6 ]. r& h. e* o: r# v7 h1 E5 B& M  E1 S* e+ Q
initialize-settings
( o4 O! x1 _- y- a5 M

# Y* J% x  A! Q* Ncrt people [setup-turtles]

3 D2 B! p; r& B0 M* P" h1 r6 j0 q/ _# s  D5 }
reset-timer
1 A4 G7 S9 b: R8 b" J' ]

# g0 j5 ?  f4 d! fpoll-class

! n$ K$ _( U, _9 d+ U
( D( L9 q* A3 }setup-plots
5 d7 l* m0 k1 x

3 t' v1 M. k* r4 Z6 edo-plots
: O& x0 a' y# G
end3 k% G' ]1 m- o

2 @  g2 u5 b+ k2 ]6 \& R* gto initialize-settings
9 @1 ?1 Y8 R: O5 F! F$ }0 O& l
( Z/ G: C: }; ?8 w8 s! t+ Iset global-reputation-list []
+ F( }0 C7 d- l! m# m! O  m
5 T! U7 v$ W# x  {6 w/ ^( f' Z
set credibility-list n-values people [0.5]

" d; }  I; H# A4 B2 ^
  S* N7 P0 P3 m/ Y& p3 G8 Oset honest-service 0

3 p: Q# u( X9 Q& R2 s9 L; P1 h! k, y5 R/ U5 e
set unhonest-service 0
3 L& w! m; m5 S
- A8 |& A: P! Y8 W. e3 K
set oscillation 0
7 M: @1 S. A* Y; {$ Y$ Q

8 Y* z. `" N4 Fset rand-dynamic 0
6 F9 q; z+ g7 B& h$ c- {
end
0 s+ p1 [; m( O# L0 I
2 T. j) [2 R1 m% b! W% `to setup-turtles
. B7 u; g5 S7 r' e+ y* ~" Iset shape "person"
6 n' A! C- K2 i! ?$ t% wsetxy random-xcor random-ycor
$ y: Z. C. T2 Y6 H0 gset trade-record-one []! D) c1 `( q; L' e: u

. ~+ S; ?, S3 ^set trade-record-all n-values people [(list (? + 1) 0 0)]
7 |$ v. K2 o* Y& {1 i
- i, a& q: H! ]: [1 `
set trade-record-current []
# Q; O9 X' v( D( V2 @9 }6 N6 wset credibility-receive []
  {6 d* T6 i- {, M0 ?/ iset local-reputation 0.5: P5 d' \' t: P) {  f1 A
set neighbor-total 0
2 S6 b6 ]. m; u% Eset trade-times-total 0. M# V+ Y( v7 P( m- `9 r% a/ H
set trade-money-total 0
( I8 e+ ^% S9 F/ f8 `$ Kset customer nobody
/ x; a: |, }* ^4 vset credibility-all n-values people [creat-credibility]
+ U- X0 B! t& K+ b5 qset credibility n-values people [-1]% S3 c/ L6 `# u( \9 O* ]+ U
get-color
% @1 C' f! k& h) i) q+ v

' v! e' A! I! n* [* Wend+ M+ l+ L7 S5 P- F: d. N1 S4 |

5 C* L3 g& M% P( Q9 p. oto-report creat-credibility
3 a: r1 d  g2 z/ V7 {0 b9 M) `report n-values people [0.5]1 n0 p* ]/ q) D- n. `" d
end
7 s( d" }# f( S+ `
& G2 O. m. I9 g/ }$ Hto setup-plots
8 ^& {: r4 {3 {* D( t" [7 f) q, n( [- r2 k" M
set xmax 30

. ]9 s% P8 L4 @* E8 I8 c
% n2 l. m0 J7 R/ vset ymax 1.0

& n5 p' x. _0 G4 |) h9 A' \4 F7 P( S) |: z, \
clear-all-plots
4 J4 ^; ^  U* W# i  U

2 N0 Z5 F3 F& \, Z6 Esetup-plot1
6 c; _0 y, L7 q) Q3 y

0 Q% M, O3 n: t  Msetup-plot2
+ q- J- m, q5 E

6 w1 A: J& m. c1 Q# g, xsetup-plot3

8 j& a) d- b) R8 _  @% dend
  ^/ s5 {- {0 Y0 \7 I4 X" f, ~7 U' v6 h, @) x$ s3 J# I5 Y8 P
;;run time procedures
, Z% C8 y9 O% s2 R* I/ Y# ]( }) k' L( _* ?$ S
to go
9 l! y- p; e7 H. F1 z2 \& y1 j9 G. Q$ ]- z/ N& ^: u" p% E( a( M: K  ~
ask turtles [do-business]

6 Y# s& k# |0 Y9 q8 ?end
, P/ w" a3 r& C! u7 [5 H6 G; f9 C: a# g
to do-business % u& r( R9 W- j+ J$ T. t
6 p& G& u: N% \( C! z: f
" t, X1 K  r5 Q& U
rt random 360

5 o; u" u! ]! J+ N. ~+ s4 F: L. S6 F2 a
fd 1
0 ^/ S2 F7 ~, _) N+ |# @
9 _, D" E% q0 v, i& H
ifelse(other turtles-here != nobody)[
/ Y- k: Z2 L* F# J% b0 X

9 V8 D5 e" P2 }) I! Z$ R7 r% xset customer one-of other turtles-here
  P) A, \% }( t) C& ]# R  e
- C" Y3 Q9 N: {* R8 R$ a
;; set [customer] of customer myself
0 w' H8 o: O6 d' f; V! |; g

  K9 ?3 y# ~: E9 z( H; Oset [trade-record-one] of self item (([who] of customer) - 1)
+ `4 T+ f' |# Q8 D1 K[trade-record-all]of self+ M7 i; ~5 Q3 I
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
5 R9 F* a# p3 v$ L
0 M- o% u- R1 y( x8 }! l
set [trade-record-one] of customer item (([who] of self) - 1): h, A( N) W8 k8 u
[trade-record-all]of customer
4 D: r; X9 `& e# q9 q2 Y$ T" x* A8 [- i
( a" \9 w3 D+ ?* i+ U, u, Y7 f. T
set [trade-record-one-len] of self length [trade-record-one] of self

( Z  a) Z) ~* b9 j! f2 b7 x% p$ V9 ~# B) y) u4 A
set trade-record-current( list (timer) (random money-upper-limit))

4 e$ u- M* X% V; J1 s7 l5 X/ J/ y2 r- E1 ]
ask self [do-trust]
8 p* l4 Z0 |* ?3 i: r9 i! b;;
先求ij的信任度
$ M- U3 g5 U6 j! C, s! T7 S% t! L, @$ C3 _- n/ R) i2 }. x- t7 i6 o2 k
if ([trust-ok] of self)
7 ^  W  b& [. m: P5 n4 C;;
根据ij的信任度来决定是否与j进行交易[+ Q9 z, X' {0 }3 n3 [( ^
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself; C0 h" D, e: m# E* }

# |; V+ D, E% S  d- S[

3 {1 k0 h$ b4 c, g1 `9 z1 D# @: ~/ V! W
do-trade

% W9 x, `7 g" E5 W; w: Z# K! m; k) z5 Z- N% h5 z# K
update-credibility-ijl

0 c, f, m) q% c
8 f* q! B3 p+ }, A: Xupdate-credibility-list* z; @8 i2 O  ^2 m+ A

! H$ d. X+ w" F1 O5 N) L1 M. Z% j8 J" n  ?9 e( ~4 K
update-global-reputation-list

2 O% r* P: W+ }! \3 g) S6 h+ s
5 q/ ?8 l! c+ d- k, Qpoll-class
, o) S) Y8 C/ `% p% }% |. l6 K5 X
: {2 v4 X& e$ A3 H
get-color
7 t; M3 X, }0 i- v

* S+ g0 O- @; U. \+ A  S]]/ {* c2 [* g2 `! X( O. ]3 r1 r
: F% N% ~# d' H. n- ~  v2 L8 `( H
;;
如果所得的信任度满足条件,则进行交易: T. g! P7 K" B! y+ @
" p. R1 \' D" e* g7 y
[
0 q3 ~$ d: [0 A  w7 \. C+ r
$ B/ c( a/ J# X! I
rt random 360
! {! Z- e$ {% ]( I, {9 A

. v0 p" I& g! z" G' b$ Tfd 1
' `: y, E" o* n2 Z7 W' f: L

" @1 V5 W: L2 V! s, e- e; k  _]
# l1 A. d2 i+ ~) K. m3 q) v1 Q# {  X

; |) J0 S0 C3 }9 hend
' G" F. g. c$ S' F, D

5 Q4 ]* y4 q8 X" r2 @: [5 Pto do-trust - \9 W1 G% Y% `( O
set trust-ok False# _, V6 P# C  N, K; j8 i2 J
$ n6 c) G6 Q1 _2 |) G& k
7 s$ T9 Q  B4 E# A6 t" g
let max-trade-times 0
4 o9 F: o1 m6 n) y3 @0 [; T, Yforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]7 v1 y8 L4 V/ C+ G. o9 f
let max-trade-money 0
5 i6 H( [! O; P7 {8 nforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 }, ~; G0 C7 h% Y8 }5 ^
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
- Z3 Y( b- q/ I$ {/ C! h
* Z) I2 e0 B" X5 R* f+ |" d& M
. k* A* V" t; o; d2 ^# [* {# j
get-global-proportion
0 M$ }2 N  N4 F' G. d: I( L+ rlet trust-value
& o4 q/ E0 V- {& C- c. Klocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

8 R& j/ h* |# z' V: e  Qif(trust-value > trade-trust-value)/ H, U3 D) n# I/ a( m5 i( w
[set trust-ok true]9 b& Y0 T2 n4 T
end  y& e  o7 l" M! s' C6 r" [: l  s% [
; C9 ?: ~" s% l3 U
to get-global-proportion
4 U" y, y3 k( E$ O: M" u/ Uifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
2 p3 i: J/ c8 k1 J9 ?[set global-proportion 0]: z0 q' M4 E1 y
[let i 0# M" \4 @/ Y% T8 m, i! b$ s5 F
let sum-money 04 G; r- g/ j* N6 ]
while[ i < people]/ o9 U" {7 W# n1 K- W4 H3 b
[
) W" b4 q: L! |if( length (item i
7 @0 @: R; z$ x+ B2 J4 X[trade-record-all] of customer) > 3 )
+ `2 G4 i( k) ~: t. s
[
" V. Z& T4 V& g4 l% @2 Xset sum-money (sum-money + item 2(item i [trade-record-all] of myself))  b' H& t) n3 d: C
]
/ n; ~: d' X* R6 o]
- n9 D2 w. z2 \let j 0
( A+ r4 C8 G4 v. hlet note 0
  }8 `$ [' I" a) s& awhile[ j < people]2 N0 Q0 b% [% j7 F
[
$ i: G) y% J% y. J6 Z4 w( T' Dif( length (item i' t  M4 I& A- b' R/ Z4 d# f
[trade-record-all] of customer) > 3 )
7 t* g  O0 r1 u6 K& k
[
9 j9 N# C# ^& v+ j) Y4 M- Bifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)+ @7 f/ ?1 c: B
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 Z5 _- W. i3 \8 t5 M" E8 f( H+ n6 n[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( y& |) N. B" K9 a1 K
]
# A% Y2 n5 ~0 g0 \0 d9 L4 p/ O! ]]. O3 q% S; r" \- ?! X
set global-proportion note" r* b( o# t% C. F% i
]
. g. j9 x/ a: e) V' m: ?  zend
% X0 y9 z2 q  G) T3 E. m; t: B! f, x; i, l1 q9 S& T
to do-trade
2 e/ d* X( N- N; |) G7 f3 a;;
这个过程实际上是给双方作出评价的过程
. t, k" k% a) y4 ]4 sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价  T3 ], f- {: {9 t
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ F8 v7 @! f( N4 _9 lset trade-record-current lput(timer) trade-record-current
$ y8 _0 L+ o! w7 E;;
评价时间
6 P7 E- [/ }( i  X* ^1 hask myself [
! h' f% h+ ^6 L3 L8 \7 Gupdate-local-reputation' I. [% {1 s2 p  I- l. I
set trade-record-current lput([local-reputation] of myself) trade-record-current# g, E" }& S1 b7 a
]
3 U3 x- M0 y! o0 v$ \7 K" iset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself0 u$ G& K8 j2 @1 x4 Q
;;
将此次交易的记录加入到trade-record-one# [1 U4 E8 F6 Z5 i2 q. p
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ a3 s; K+ j% ]7 w$ g5 b3 B
let note (item 2 trade-record-current )% q% n+ |/ Z) }# M6 |# v
set trade-record-current% m7 i6 G1 N4 H: s4 h  \
(replace-item 2 trade-record-current (item 3 trade-record-current))
( W: @3 [6 X5 \3 g
set trade-record-current3 R/ i, K, Q' @' }
(replace-item 3 trade-record-current note), p1 n! I  N# b! N( B" c3 O

, f3 N  `6 @4 l9 W
- Z4 I4 b1 A* X. s! Z  s! d
ask customer [
0 S1 |0 C# G1 {1 G8 D# o/ bupdate-local-reputation( v, A0 n+ H& m0 l! u; W
set trade-record-current/ b" J& t9 R' B2 Q& Z
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
! z3 H! [/ Y* j+ Q. a, r
]6 R$ I: [' P# B: _

4 S# k. m. L  G3 i

, r, E3 p$ ?5 `8 A/ \" j0 hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer  j" t3 V! F9 A
) m$ H; z: Q' ^; f
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. V4 U/ j" t6 {3 g& M. _8 H! a;;
将此次交易的记录加入到customertrade-record-all
2 a. E/ W* D7 v2 }3 a8 y+ Rend2 C* Z& M- i- i! w+ _

* C! e' N  }  W1 rto update-local-reputation
# P  A* s7 [- w1 @( sset [trade-record-one-len] of myself length [trade-record-one] of myself
) x" J$ P, d, b$ z! S* l1 e& p& X/ v

, z) e" w' P7 y6 P! u$ N; d;;if [trade-record-one-len] of myself > 3

+ I. C1 {3 b$ x5 P& @! Kupdate-neighbor-total
3 L7 R/ g9 W' r, b3 P) F;;
更新邻居节点的数目,在此进行
, v$ [2 A0 M- [% f" ilet i 3
5 m5 ~) N7 X; k8 g" L1 R( Llet sum-time 0
3 [+ s) ~9 R9 A8 }6 |( r# rwhile[i < [trade-record-one-len] of myself]! |" B- L' X+ |- A2 j
[
# R% q, ~+ s; Gset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )% p/ a5 m6 ]: H
set i. |0 d, `, R+ r( U
( i + 1)

# D' [) r" n' ~' g  L]
1 e$ p% Q1 z- ^  q3 A/ dlet j 34 B4 u, G+ R6 r3 n* I* y
let sum-money 07 s! {+ r8 g6 f6 N5 x5 e
while[j < [trade-record-one-len] of myself]: I* F8 Y" @8 c( \, Z( e
[
9 _* C8 c9 ?* Bset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
. ?  |% M5 Q8 v7 p/ c3 U" N, Q7 ^set j
7 Q9 Y8 k  @3 h! }3 X1 p8 g7 D( j + 1)
  K9 n) s8 x7 s& @
]/ U; T- T9 M3 f0 I! y
let k 32 J  O( U$ c6 ]
let power 03 H  }+ c+ g* n8 a1 P9 D
let local 0
4 z1 p! S2 G: y* swhile [k <[trade-record-one-len] of myself]
/ R/ V; I5 `9 `2 U3 W  w1 d! {* r[+ X0 D$ T. w4 Q" G
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) % l: E4 k" A$ u! h* V$ R  k- Q+ Q7 s! _1 W
set k (k + 1)
0 o( c8 ?5 J2 m( @6 _+ P0 f]( x' G4 f6 e4 I; s$ k% k
set [local-reputation] of myself (local)( l. d( b# n/ V1 I1 |
end" r1 U- A2 o% r7 {* k1 I3 I

2 f4 }; S, Q8 a) D) dto update-neighbor-total
6 r8 m1 R% J' \/ ]* H) G
0 {. t+ i4 _* V' E6 eif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]" s$ ]8 ?3 C7 ?, J
; V) O2 G$ O6 ?
5 `6 _- g6 j1 |7 B$ g; f: [) }6 P+ e' }
end
9 D0 ^. b: u+ b& x+ u( S% F0 H" [8 `0 N9 B) y  z
to update-credibility-ijl ( N6 L5 z0 z2 F4 x9 O! A. c2 E+ Y
7 b! ^3 a# A& J% O8 y8 u% t, D
;;
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。. u& |( C6 p/ z# L6 ~8 p: J  x
let l 0" @" q7 L3 j& N+ I% i2 ^
while[ l < people ]( n3 z1 \) e  ?& 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# D$ m% F0 F0 E$ P2 T" P3 u! b6 e
[& t+ P6 U8 O" C6 B* k# i
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)5 G) K9 y0 z! s5 ]
if (trade-record-one-j-l-len > 3)
4 x. F5 t; k$ p1 C2 U3 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-one5 C+ r- D+ {5 p, G3 W
let i 3
2 q0 M- {" ^# Z6 }: a2 R! Klet sum-time 0/ p) W* Y$ \7 a/ n7 k/ ~" E4 {
while[i < trade-record-one-len]
* I5 T  J$ W! d) Z! W[
8 G2 X7 {0 T% o1 B5 [set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ); V0 d, r% P4 j0 R: M9 J
set i
  M  \- L% z8 ^, u! F3 {. B( i + 1)
7 z- `& @7 p$ S+ G
]! r0 }5 J: z8 D( w. i( X7 C
let credibility-i-j-l 0  Q( d- u. K( C) G# C# y
;;i
评价(jjl的评价)- k. w# I. p* e3 M# C
let j 3
9 L2 t2 P' g  D( m% H" Z; @/ V" Blet k 4
* h1 h" V) `9 u  b, |) ~8 Uwhile[j < trade-record-one-len]
3 _* s. Y4 Q0 q. v& u; i+ M$ L[
& B1 d. j: O+ e1 p; P/ [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
& ^5 r% e) V2 p8 z. ^# C& _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)' ~9 r5 r# h; J1 I5 f1 _9 s
set j+ Y  c, H5 u# w5 C3 V
( j + 1)
* i: R+ H' K0 {$ V% c# y8 m! @
]# r, ~( g+ q+ [, x' \: o  a+ p
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 ))
+ N- l1 L0 l$ _4 U9 t. E+ c$ f
  z# |, r! C* d7 d" u/ d0 f
- n+ h0 Z4 V+ @/ q! b' d+ k5 L& [
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))- i3 @- U. e& S. E
;;
及时更新il的评价质量的评价7 i9 T1 n" C7 k4 M7 E. O* u, d
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]2 Z8 @8 i6 W2 I/ z0 p' X3 T" S
set l (l + 1)
, ~9 |9 r% T4 U8 F; ]& D% r! f, t]
: O% ~7 R& x- \end
$ _" g( E8 m4 q, E' O0 Q
; S# N$ D! k, v; C9 Pto update-credibility-list
3 h* M% y/ e% i7 ?4 Slet i 0
7 |: P# b6 _0 F# B! Gwhile[i < people]4 q1 x: M8 K, m3 h/ t! c& I" K% }
[
0 M8 F/ c6 g* \5 @) g2 A: o/ d- ^/ _let j 06 ]: E0 \" e  _0 E% g. C# m
let note 0
' j" _( V- X0 U$ }let k 06 m5 ^$ ]) c, q% H: x5 J
;;
计作出过评价的邻居节点的数目8 J9 N. [( r. B& L" z, u5 i
while[j < people]/ J; k2 l+ W" e& i( p, i/ G
[
4 L+ M/ P) s- H8 X; I5 m8 C% Dif (item j( [credibility] of turtle (i + 1)) != -1)6 b8 S( L1 x* J8 G- p- [+ P0 n
;;
判断是否给本turtle的评价质量做出过评价的节点
2 L' g( Y% [) ^( `/ G8 s[set note (note + item j ([credibility]of turtle (i + 1)))
3 K! i5 s' q; T;;*(exp (-(people - 2)))/(people - 2))]

1 p; y; l3 X3 z3 z0 }( c. ~  tset k (k + 1)0 I, ?& |0 m9 N
]
6 i+ ~, n; |: Aset j (j + 1)
/ `  N# L- m3 [2 E+ V$ ?( D) f]
8 `0 _' @. B* f8 [2 g. [. yset note (note *(exp (- (1 / k)))/ k)+ f4 `( l1 M6 u& L2 m
set credibility-list (replace-item i credibility-list note)
8 G+ {+ \% i% O4 N* W2 Y6 \4 ~set i (i + 1)/ m/ d" T6 h6 l& H+ W. }
]7 [( M: A) [; X! W9 @: i+ d
end" e$ N* M/ b( @7 i! M, p( _
1 S" D% h7 u7 x; P8 j
to update-global-reputation-list
8 D7 S; J/ N& c7 D" s. ylet j 07 M, C# I! Q) k# ?' Z+ Z1 G3 O
while[j < people]: G. L' W# E  V& X6 B2 v
[
' U' o5 c/ A0 N" _" T. n$ P6 Alet new 0
: N2 [* U" x2 [7 E5 y;;
暂存新的一个全局声誉
- z1 K$ z! C, G. W( alet i 0
/ K5 C1 E7 e% b2 ^$ K! _. m9 X8 R( `let sum-money 0
7 q2 b2 m' y3 M5 R$ N: ylet credibility-money 0
8 {  G0 ^# J8 a: y' u; h% Bwhile [i < people]/ V. C5 g$ K2 f
[
; \( s3 {4 w/ ]! p- m- [% W0 f* lset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))+ [9 N5 t& O& v# t. X. d
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))$ d; T4 s8 e! g
set i (i + 1)
& D, O' a, [4 F& I" \# L]
( h6 d' I& n: D! K% j4 t9 h  ilet k 0" g. B  b5 e. P0 e- G1 J
let new1 01 [" j- j, W) U2 w  X, n
while [k < people], S8 q( a" o1 [8 M6 Y% B9 u& C# ~
[
! Z: @/ o4 h1 i+ F' [8 Kset 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)- `* i7 R+ p  b2 R
set k (k + 1)$ ^" E% T, W0 {1 J, o' ^+ L1 D6 A3 _
]
3 {3 i: ]. C% Q& C) ]! Jset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
; q4 ]  W0 o8 z# U! ?% s6 [. Hset global-reputation-list (replace-item j global-reputation-list new)" T( }( ^+ t( w
set j (j + 1)/ M; |1 p, u3 N9 H! a
]" K6 x% L) U0 V( }  n1 y) U8 M
end
( c5 z+ @- \8 M' n$ n6 e% p" _( j- B* @4 k
) o& `4 ?. E8 a  @

1 w3 n7 K1 S% y' Y+ `. U; J1 Rto get-color
; z4 E8 ]1 p" _/ \/ x2 }' ]5 X2 @8 E; F) s0 F5 O
set color blue
# |9 ^2 P- t3 L" ^8 U# t
end  a: k3 Y- B7 Y" Y+ n+ ?/ m
; y1 ?% x8 a7 \9 i% Q& t! X
to poll-class$ A9 O0 T# i6 X) t# e
end
% ~) v6 P9 U2 U5 E% A* g+ g0 o
to setup-plot1
# D" N" E( j2 G- ?. H0 Y+ C
6 \' G# G" ~% R: n: R$ [set-current-plot "Trends-of-Local-reputation"
: v; l2 d& R& ~; P2 o' y+ b1 O
! ?( P# W9 G9 s  E# R6 I/ D1 @! v
set-plot-x-range 0 xmax

( H5 w  q: D. j; t* O( q' {( q4 Z% P8 J: u0 I
set-plot-y-range 0.0 ymax

- b# n  e( K1 I2 ~' bend* S( r5 b# H9 _1 ]$ }9 a+ M% Q: c
/ }2 H* Y. K4 C. [
to setup-plot26 J6 ^( ]/ o  }' I9 L+ N
; t! J" Y4 _. A- n( l
set-current-plot "Trends-of-global-reputation"
* F8 v. W% e5 t
) a5 t5 _! R$ z! z2 n/ ^
set-plot-x-range 0 xmax
, Z! ]# l  K9 U
- z) t% A# W/ o1 y. W% y
set-plot-y-range 0.0 ymax

0 X! h2 }7 b- o5 z/ w+ C6 Send
4 J) u% _4 }* K1 m6 U5 B- k( d$ H* K" J" O# L! e
to setup-plot3* ~/ y: o" o+ C
! {9 `9 J& n) ^' Z- _
set-current-plot "Trends-of-credibility"

" x( w2 E4 p  }% f6 h
7 R$ }5 V$ l( B, }% yset-plot-x-range 0 xmax
6 A4 [0 G( A: [: n8 m
, P, y9 h2 R& B, W( e
set-plot-y-range 0.0 ymax

* k( B( S; u6 L, F) d3 r6 ]+ fend( j/ d9 c( F5 Z3 o% a+ C

' M5 l* p, r5 e' b; Gto do-plots
0 U" _2 \. e/ z2 P9 O* S. g/ Zset-current-plot "Trends-of-Local-reputation"
+ Z' u7 J& a1 y1 `( {5 {" Pset-current-plot-pen "Honest service"
) D! N$ y- f% t1 \7 [0 tend
9 g4 U  r% s, p- f" y- J6 c" b0 m4 w2 `6 q$ I
[ 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.* C% c9 I1 [7 c8 {
* Z, }7 n" N* i/ X3 ~0 j3 T
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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