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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:  ~3 }6 x% d1 P5 \, B+ @
to do-business ! B& v/ w$ ?# d9 Y
rt random 3607 x5 U6 f- d( \" S9 d
fd 1: o) p: ?7 o4 v- t) Y
ifelse(other turtles-here != nobody)[
3 L! w: P9 @' 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.
  B2 H$ \" K& f0 u4 S- f   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    " L" b- j3 ~+ U* ~; @$ ?) j3 F
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
* N$ T1 p* b. m( w5 P; x) _8 V& X  q   set [trade-record-one-len] of self length [trade-record-one] of self$ X7 W* ^0 u' w% h' v' `
   set trade-record-current( list (timer) (random money-upper-limit))
; w9 n; C3 G4 G: I1 q! h4 V
) T6 H" Q- }( p% M2 ]* z问题的提示如下:
# M$ P1 N/ Q: {) V0 p  N  g* Y( n3 m( ~1 p9 p
error while turtle 50 running OF in procedure DO-BUSINESS. W) b- \& F  u" e" t4 W
  called by procedure GO
3 O0 h) l9 u- ^7 Q1 EOF expected input to be a turtle agentset or turtle but got NOBODY instead.; x: C* @6 u3 ]9 r% @
(halted running of go)
2 ?% ]9 b4 h0 g0 g* @- O, q9 u! P* S3 a) Z
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~~/ p/ C& a- [! q: ?' c; E. `2 p
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
3 ^0 d" F6 x* p1 dglobals[  d& O' x1 W7 E
xmax
0 B& t, {. k. _& v* L# }ymax
: n: N& K/ ~0 t) }global-reputation-list( ?: A) V) h0 i
, K& Z/ H% t* N( F) y. L. S
;;
每一个turtle的全局声誉都存在此LIST# W& n# ^4 z# `
credibility-list6 r0 \! p/ F  w& V7 P# V
;;
每一个turtle的评价可信度
7 K, {) ~8 J7 shonest-service
0 m/ W8 a. B0 Xunhonest-service% x$ S! N# U4 ?3 m5 C# D% w
oscillation
% W- b( R$ Y! ~! l/ Z9 Z  jrand-dynamic
) E5 P' U5 d7 h; ?( f2 i) m/ q  T]
/ c+ }9 R- b4 s$ H7 Y1 M5 Q/ A7 i& b' P% c( R+ G3 m' p: l3 T
turtles-own[
" x# ]( G, D9 L! I9 x# W% I6 Ltrade-record-all
; D: g8 J5 c/ h, L8 G5 {! h;;a list of lists,
trade-record-one组成
+ ^& Q% e+ e6 F. [1 m8 jtrade-record-one1 q* t2 f& a- m- 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
$ i. v5 z; e; e
7 K9 z8 q5 `3 s;;[
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]]
2 f  d, m: C. |+ gtrade-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]
" g& ^0 q0 c7 E! 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% n( y% `: J. r0 Q3 i
neighbor-total/ [* y3 _1 v! _+ R( @6 r$ L
;;
记录该turtle的邻居节点的数目5 x5 s- X0 O5 Y$ f% C0 W5 T5 g( F
trade-time
. y" B" k3 B. n# ]  U$ F;;
当前发生交易的turtle的交易时间
" K% {6 a! w* J' Z+ L0 G: A$ B9 gappraise-give
7 f$ c8 Z$ c! e- d;;
当前发生交易时给出的评价
% H. t* o8 |  g% M9 Vappraise-receive
" @! V( D# v/ W# h7 `9 N4 \; M0 ?;;
当前发生交易时收到的评价5 \) n% ?! ~+ |* e8 g
appraise-time
3 J( a( d, G) A0 E% G;;
当前发生交易时的评价时间
1 X; P" T8 K8 glocal-reputation-now;;此次交易后相对于对方turtle的局部声誉" ]0 }9 i+ b& J3 X% G7 U
trade-times-total+ t6 _- y0 j' s. c$ K* g
;;
与当前turtle的交易总次数
( D7 {9 h8 M  V, u( i' h. ]trade-money-total5 n. s  z( H# \2 j
;;
与当前turtle的交易总金额. N; j% k, N7 U% [3 j% o7 z- g
local-reputation, K0 a( `. n$ t: C* ?- R
global-reputation
, G' W* U# Z( gcredibility4 X9 j) L( u: ~& @2 E6 Z7 X0 r" c
;;
评价可信度,每次交易后都需要更新% d2 T8 S5 O" A3 G- `
credibility-all
. [7 O- p# c$ w4 ?: H8 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
+ [0 n3 i3 r) u6 W" C6 W" L; T& l% T# Z7 W& {  y
;;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" ~5 d, g; L* ~
credibility-one
( y6 r+ _( M0 H' G4 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
% Z1 n) N3 @$ j( v/ N, g4 }global-proportion# f1 y' B5 R0 \2 n& S  @) Q3 {# n
customer
  C' h7 }% u" N  F6 s6 ^customer-no
+ H2 t% O6 ?# i% ?1 ?trust-ok
" T0 K1 W6 _' a& I4 m9 L7 C2 etrade-record-one-len;;trade-record-one的长度& X* I0 F$ ^# P; S1 u) v- ~
]
0 m' \* r" k" x7 I& ]& y
0 H( e  }% K$ ~* v;;setup procedure
+ x& x; G3 D2 P$ v+ d, L4 T& X7 H3 O; W# [" ]4 d2 l9 H% U
to setup
- f; |! {: ?! C+ ~4 l9 d8 U+ Y; J) p# C7 J+ K* B4 J
ca

% b3 h, s$ ?1 s( T' B# |
0 o% ?9 c. s6 \' n" L5 B7 D# \initialize-settings

5 f4 L5 s- k( k) m$ Q" ?/ t, e" N/ K( F& v/ w  Q0 n5 t
crt people [setup-turtles]
, ?& H8 A7 M0 ~# _
  f+ x, W( d: K  w) _7 G
reset-timer
- m% {% s' U* ^" h
, u7 L( n1 L; l8 G
poll-class
" l, M( E% J& g3 u6 Z3 C4 x

$ P7 T, M! }* x& A( Rsetup-plots
1 K' M1 B: L8 ]7 E* F8 H, s
1 _. C6 G/ c* f, q4 ~7 g: s# g4 [
do-plots
$ L: m! O1 N" z* X8 O, W- C! ^$ s/ h) l
end# \2 }2 z$ _7 b. R1 i& Z
* Q5 V& ?+ w8 z. k  D: u" Q
to initialize-settings. r1 C6 w& Z- ]5 y0 K" m: U. y1 V
0 _0 `% w) r2 Y
set global-reputation-list []
# k$ G8 `: t$ T. Y

7 Q3 K6 k7 W  @8 ]4 fset credibility-list n-values people [0.5]

8 K4 I4 v4 Z3 {6 e) I8 u
# c7 ?! ~) p8 xset honest-service 0
9 p% s& V7 d9 ?7 ]4 H) l9 x; q
" c7 |  d; W  j& {$ ~' {( R0 p
set unhonest-service 0
0 T& \1 A2 c8 h# s2 N# O- b
3 Y  A/ w; i( t7 d( b2 d9 @
set oscillation 0
4 H5 L* r2 {  ]; e  {/ u% v

0 [% ^3 F" v% s, ~set rand-dynamic 0
/ V5 A: R1 k8 e' K
end& p2 g2 \) J% r8 y
1 y! y( @' F# U9 y$ R# {8 ^
to setup-turtles / b, u% l7 ~0 C$ E; v+ m4 H
set shape "person"8 [- e- r/ a8 A9 G0 C
setxy random-xcor random-ycor! Q* S( C# B7 r# e: g4 y& X
set trade-record-one []* ]! C" f- s. o
+ a+ v+ O+ L) S, r1 a
set trade-record-all n-values people [(list (? + 1) 0 0)]
5 W. m# _) i0 [: j% E
; w7 T# |- M: i* B
set trade-record-current []
# |& |" d. x) |. k* T3 jset credibility-receive []0 y9 U! n( y8 h. v) I4 n5 h. ^
set local-reputation 0.5
  v% c4 G, ^& o3 O5 _- N% gset neighbor-total 0
# m: G  g9 f/ }$ Zset trade-times-total 0' E8 B% {! g1 R* z. y: b" y
set trade-money-total 0! E3 d! }6 x  H7 e, `! ]; s
set customer nobody$ D- j; ]* {5 i$ U: _
set credibility-all n-values people [creat-credibility]
; E& R- [$ g$ v8 W; I8 i8 Hset credibility n-values people [-1]' ?& |. a2 T3 O( u( P
get-color+ F0 w$ J% `  L; l
0 u: x& `* H# D
end8 S) u0 ^; ]/ y" T) m6 p' y
8 B8 t9 v9 _) F9 M/ i3 {9 Z9 b0 D, \
to-report creat-credibility
7 B, \, N6 p9 }" v3 O8 Qreport n-values people [0.5]
- h8 s4 w! i/ uend7 _& P2 [1 ]9 y! t7 i" P

" R" T' _0 \; K% `( M- Jto setup-plots, o# `; S3 r, ]" E6 [& a

: A# _6 E9 L! Q; D" `4 Lset xmax 30
' d/ e& X. G" g% }- A% d9 ~

. B5 W& h9 o. Qset ymax 1.0

! E; w  A$ D. t$ p! F7 ^7 r/ c) e& H" D4 M+ W& ?: D" l, b
clear-all-plots

, m* G5 t4 J/ i+ h0 C" e
6 i# A1 `& n& B$ L7 qsetup-plot1

  i* T9 c: ^5 V; [7 H. C) Q/ b, a: S3 B9 X0 E
setup-plot2
4 n. V8 i1 r3 E' l

3 ~* A# y6 O  \0 U2 I( U# Isetup-plot3

) v: i- n  S  i5 Q) x( Wend1 F% f, |  f  s9 x+ j

: q5 f, R& h- r5 A;;run time procedures
' L0 p2 L: c/ I, X- D1 h9 V. \( D- X( p
to go
5 Z2 n' q% B& f: K0 U" N2 r
5 i! T/ ]- j5 a3 m  ^0 o9 dask turtles [do-business]

; V# E7 c# ^* }3 y- g+ |end& t( Z" E( l& O
' H5 A# Q5 T  X7 x2 B7 U
to do-business 9 ~$ l" }$ P; R9 h. H" }1 @# q

# \. i& m1 Q! Y0 J% Z) s9 l
: r' ?) I% w- I+ Y6 @rt random 360

3 c, a+ {0 @3 X2 _9 M4 |& [- L
" F# t7 q5 ^+ ~$ ?. \fd 1
& U) M& J2 \  m8 `0 \2 |/ U5 C  ^
/ @/ x8 U6 ~7 @, V
ifelse(other turtles-here != nobody)[
, j! E" A/ v8 _: X
2 l" \+ `2 o$ F0 G/ V) S4 X, U0 w7 Q
set customer one-of other turtles-here

+ s3 d: ^( Z! Z9 X* {% r
; {2 f) S* b- @;; set [customer] of customer myself

. _$ e9 G! k, U+ b4 O: N/ c! E! c; h# E
set [trade-record-one] of self item (([who] of customer) - 1)
: ^% @/ g5 a% y6 b/ ?6 g% s[trade-record-all]of self
2 o1 e" u, `( N6 Q8 P; Q! A;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

' P' {+ U; s: K( Y, F$ D4 ~, c. }' C$ E- X
set [trade-record-one] of customer item (([who] of self) - 1)
6 H8 I7 C* q9 v& Z9 h, {+ X8 F[trade-record-all]of customer
$ h" r7 s1 C0 D! p& z

- X* ?- K( C! Q2 U, N& Xset [trade-record-one-len] of self length [trade-record-one] of self

8 K9 ?8 N( y1 M% u
: S+ j# y% N3 j2 L6 ?set trade-record-current( list (timer) (random money-upper-limit))

# O* t) D/ l9 z2 f! E' W3 U  S/ G( U( M0 l* L
ask self [do-trust]
2 t" h( n9 k) f5 p0 p; D, A4 _;;
先求ij的信任度
) V- C& X2 t: b. ^9 r  P4 ?& Z& H. y( p# R9 Q2 S5 l
if ([trust-ok] of self), ]1 D' N. ^2 z* }3 s- L
;;
根据ij的信任度来决定是否与j进行交易[
8 q! z* K# s0 h" z- C/ nask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself3 I* i4 b$ n. v+ q- X3 n
8 n) t' \: R( i9 {3 t! x  D" l
[
3 r! p9 X7 {% r0 T$ C/ z- }

7 B1 f. {( f" y& \0 a7 q$ \. {do-trade

  b7 y! j/ z' k7 a5 F5 Y8 ~9 D8 ~( `3 u! K8 P7 F: ?' Y
update-credibility-ijl

  ?4 M! e2 y2 z. q% V
) b/ D* N- @, Q6 k& Q5 [2 Y9 dupdate-credibility-list
# L& O0 L# I$ \- Y) V

# ~* |7 A; x/ F/ b) L
# R" G4 ~3 ]* s/ wupdate-global-reputation-list

$ p9 g% E1 w6 N( f% i0 e( Y, X
( e$ ?' L1 K' ?+ G' i$ D" Bpoll-class

0 R$ t) |/ {# p7 \9 p5 S  Z9 l  q0 b9 ~( Y
get-color

7 O  r# O$ p5 ~6 n; `0 s
0 W. b7 k! U# v; Q, F]], b$ a8 @- b! W3 C" o$ o

/ j! G0 K7 C7 W$ C  l;;
如果所得的信任度满足条件,则进行交易! [; Y* z- T; u% d8 ~; A' \

8 ?; Z. I- t; R; k8 `$ o& j" }[
/ f4 K4 X3 z9 i: m# d

/ [$ c0 D4 K2 Y9 i& V- Crt random 360

* {3 a: J' _; _4 Y
* M! u6 J! T; b# b5 ~8 E3 m! u1 Ufd 1
  g  @4 \& W# ~% u% B

8 s- v# T) {9 T  u$ k6 h3 G9 w]

" T5 n1 s6 D* B& v' ]5 Q& R3 {8 k/ l# j' E/ s
end

# c' A1 r7 f1 W6 S9 H. g: {+ U) e+ H8 k. t# R0 P& j
to do-trust
+ d4 H  g" {  }8 ]$ L# y5 w* q; Eset trust-ok False5 {3 t; d) h' k9 T! H9 d7 v4 Q+ ?
5 X; S/ ?( Q6 K5 e2 [, v9 u

$ ], {# ^9 `+ G# W! blet max-trade-times 0: K" L/ H5 R9 y& ~
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]$ L. N' L* x6 T, l) {6 g
let max-trade-money 0* s9 Z, W8 t) N. J+ w8 R
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
9 E. D! t4 D$ Olet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))9 `/ s8 Q/ ?: ]( ^

  W1 S5 x9 N0 a% [
* [8 N. H& s( `& D1 \
get-global-proportion
- X; e" Q$ H( a) |) J3 klet trust-value
: Y, I3 p& S9 \, zlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
+ _' s% ^6 t4 z7 \! q7 _) f
if(trust-value > trade-trust-value)& j# {7 O; Z$ Q! J4 J
[set trust-ok true]0 F7 M; |" L* V) ]
end
1 A  R" ~2 r/ {9 A
0 ]2 D3 h! i3 v. e/ M4 ~* wto get-global-proportion
+ O7 v- O& i) ?8 kifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)- _2 ~7 X$ g  p; H6 m. Y7 c
[set global-proportion 0]
, _- Q# |! B- @9 }6 k/ |, v[let i 0
+ ]9 P0 l% t) w. ilet sum-money 0$ P$ t/ [. L: R. R8 x
while[ i < people]
! a: Y) G$ v2 N[2 Q3 E3 M6 s3 V+ ]
if( length (item i
" \; H1 f; @2 `; r2 `- k6 ][trade-record-all] of customer) > 3 )

' k/ d/ T4 {' M% K' s[6 g& C1 q- P' @  d1 `$ D! I' F
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
# @* _" m2 g0 a  j. |]
5 q& d, Z4 S$ s: `: W8 s7 j9 R]
+ r) x; i/ C$ f* A9 ]6 l6 h4 _let j 03 b% c, L* }  Z" i0 \4 A8 U
let note 0, l3 h) \/ i  G$ ?0 C/ j7 A1 c
while[ j < people]
  ?$ O& b# \& s- z[# _  ?+ L- d, P. K& `
if( length (item i
+ s2 @! Y7 ?# `: i. \[trade-record-all] of customer) > 3 )

; e$ q# K: M- Z  }5 _4 f+ N9 q) D[
) k3 ?: r! j: y8 O8 N$ Q" Y( o: z% ~ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
; h+ ^* [. }3 n7 i. {[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]7 o, D& ]& R" D+ O2 |; A
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
+ R  B) K) V! e# n0 ^]$ d# ]4 }% X. Z# ]
]
8 \6 u1 }2 i/ U. ~set global-proportion note6 L0 ^; X3 }6 W  J: o7 \" J  b
]. f: {7 E$ N, n  i
end* {7 f" S; B! f0 s! }- b7 l

8 H( }9 i" p# d+ m. Kto do-trade: p1 u; o$ A7 m+ G& [$ ^: a5 i
;;
这个过程实际上是给双方作出评价的过程
5 J& a0 Y2 M9 A& y, d9 ^! q" dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价. a9 p3 O$ w' f1 y9 q" o& w1 r4 e
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" S0 {6 W& ?8 {* G+ L/ H
set trade-record-current lput(timer) trade-record-current
  p0 \$ b8 h* X1 p2 o;;
评价时间
; O1 p9 L6 |( X: L/ r6 L; Qask myself [2 Z' V1 e7 A0 A/ S
update-local-reputation5 q( I$ U: y) b& n  G9 N
set trade-record-current lput([local-reputation] of myself) trade-record-current6 k- W- }2 ]/ [/ J+ X
]
( w3 T. ?, A$ u7 Q3 `( l; M/ n) rset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
/ }1 u# q. D1 ?" l0 _8 \& {;;
将此次交易的记录加入到trade-record-one8 N  I* Y; K, U* A; z# P, W
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
# n' m5 h1 ?, _: f" `let note (item 2 trade-record-current )
; I9 a4 U- e: Z( {6 Xset trade-record-current
+ r- Y  E7 r# z$ D$ _(replace-item 2 trade-record-current (item 3 trade-record-current))
& @* T8 Y+ B  b4 y: U
set trade-record-current5 _- L9 `- ~2 v' I
(replace-item 3 trade-record-current note)+ d9 p' D4 l7 _% U3 k
1 {: x; q0 _( z( k3 x/ L

/ q2 v4 I% Q( Cask customer [
* N" }2 ?+ y# A+ Y1 `update-local-reputation9 d( A* a8 H6 ^( U1 \( ]
set trade-record-current8 j% F: L/ }& o2 S. a) S
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
6 ?& `+ q% i9 X- C0 W* H" E1 B% d
]% F, m4 ]0 o0 a. O& A1 r0 u1 x
' j1 }' V! ^4 k# g) m

/ i3 T8 C8 C5 n# p" F  mset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
# t6 S3 b, k$ n8 Q$ K9 y4 E+ S

2 a0 M! u% _5 d' fset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
$ Y  H5 Z3 _, E, K$ R, Y) V;;
将此次交易的记录加入到customertrade-record-all
5 w$ @4 U5 ^6 w4 f2 i4 t: L+ ?# Eend! s6 r4 Z0 n, ]' ^* I1 X6 B
" x* V# S7 b0 E  V& V6 C
to update-local-reputation
' |0 ~3 Z  Z4 b2 eset [trade-record-one-len] of myself length [trade-record-one] of myself
9 ]# u* h: [' E6 e# {: X7 a" c, ~% K: a
! N& L$ S# l9 _" P3 D
;;if [trade-record-one-len] of myself > 3

" \% ~. Z& A1 {" Gupdate-neighbor-total) k7 y2 w( {0 d+ d0 z1 V9 i, D
;;
更新邻居节点的数目,在此进行/ C2 H0 ?4 g1 H* ?
let i 3
* }5 `' d' G4 J$ e7 f" Jlet sum-time 04 Z1 L+ C; K$ }5 }% c
while[i < [trade-record-one-len] of myself]/ o/ t* `- n' \- q
[
1 T7 [; P  [' ]4 G# p+ J0 Gset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )& }1 Q& n1 G; O) H2 v% j
set i) C' ]9 Q8 z) F# l
( i + 1)

, l7 \. E* q1 F9 f! A) H2 ^% C& W]" ~1 u) O  h$ O, c! T  Z
let j 3+ m5 T9 K/ K5 h; O
let sum-money 0
3 K- h' t2 U7 v" Z8 ]: L3 Iwhile[j < [trade-record-one-len] of myself]9 Q0 B; f/ f4 O" z6 p
[) Z! n5 q+ K0 O* F! _4 E( {
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)
! R  v, v! Z4 _& {0 pset j/ @0 `+ E5 W# [3 I8 j
( j + 1)
" V8 _5 B2 ~3 k3 n/ U9 u$ I
]
3 Q" y' L( U9 O' j0 A+ Flet k 3
$ j' a( _/ s7 @let power 01 ^* f# B* V$ o; h
let local 0
) N) R1 F2 \8 e2 l+ R: Qwhile [k <[trade-record-one-len] of myself], p1 X# u% [7 k7 e) b( L
[
  V/ [/ }; B3 [2 Q; b. Q+ k- Dset 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) ' v0 T$ Q  k. m! V9 K3 A6 {  V( L+ j" j+ |
set k (k + 1)
0 a" p) `% ?- r# t& W]2 F$ U8 y9 J9 W2 t
set [local-reputation] of myself (local)! k2 i. G3 U& F3 O. S
end( X1 s) f* F6 n

9 V2 J% ?0 }# ato update-neighbor-total
8 [: w! H) I1 d2 s& V& O. h
1 I+ C2 L3 A" s+ j/ @5 qif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
5 i' m; C9 c( W6 m( w, t
3 N6 T( [: S4 J- b# P5 D" Y! M

2 L5 C4 n- D3 g, X2 h- Lend
% e3 J: S' a5 M& P5 _5 K6 V" G) `  p1 {
to update-credibility-ijl
: L6 b3 u  w* f, G1 `: z
0 Q6 }3 K  }  ^- e$ W;;
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。& z! U# @. {5 o" w5 q5 `6 \
let l 0# |9 O- }- o3 X, C
while[ l < people ]' I. H9 S5 s* A/ r* |, J) R
;;
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' e. W* E. Y/ S1 B
[* R% r0 Z6 O3 m, h: Z
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)& w9 @, a$ p" `0 F" P3 O7 D  _
if (trade-record-one-j-l-len > 3)" O% w, j' c2 {5 U1 l7 I
[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
$ Y- Q% C5 d# K( I$ t! mlet i 38 ^, ?; l  m7 h* N" ^, I( j
let sum-time 0$ \1 K- |1 C; e
while[i < trade-record-one-len]3 [% h' N) }6 O1 d1 i
[0 G+ d- g# K5 l% J( ?, {
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 _6 {, M2 y9 U/ }9 D
set i9 K/ g+ Q+ K+ s
( i + 1)
. c- w* V$ x( m! z: f+ s: \% Y
]: @7 f% z7 B8 w; P
let credibility-i-j-l 0
2 M6 e: d' j, s& h! V( s, n;;i
评价(jjl的评价)1 Q# P# U8 W3 a5 K! P- W
let j 3
# F/ O- D4 J9 s, I  D: T) glet k 4% ^( |# k4 O' t8 n( c& I4 }
while[j < trade-record-one-len]
7 N7 N: e' t* L& `( O- ~[) _9 J6 b1 i) m
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
; _! T# a  H0 o$ e! h; wset 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)
' H2 [% |9 _$ c8 x+ i- ]! Mset j$ V+ \- ?) Z  m3 L
( j + 1)

& |1 G& [6 o6 _6 X]9 p& W4 F4 l( f' K/ l" ^' l4 h
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 ))
, Q  v. B) u0 R) w3 v
; Z" K6 S3 \% v

7 @* Q, `8 t: w% k* _; Hlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ P) A& L+ P5 S) w0 r3 @1 U( h, f;;
及时更新il的评价质量的评价- b# }* _& m! P4 o8 L0 d; [) l4 B
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
/ o. _5 t, U- p$ [; E0 c# hset l (l + 1)4 L) v$ a! X3 s7 ?% z
]
! z/ a4 t2 w  q) Cend; X. D- a+ n0 j9 P+ f+ Y6 m( m

9 [- N- `- J% b2 V% Kto update-credibility-list" x+ D$ b6 l8 d' q8 E$ K
let i 0
- f" e) p9 @+ U1 H9 kwhile[i < people]
/ i$ `  a1 }# ~9 F4 O  R% |[1 W5 x4 C( i5 e5 F0 f7 j- r
let j 09 t; _, ]7 S3 e: j
let note 0
# {' ?& q0 I6 I* T6 Ylet k 0, q$ V9 K0 n/ `  B+ `! w
;;
计作出过评价的邻居节点的数目3 a" w, |# q( i' N1 N
while[j < people]
1 B# t  V% \! o- L[$ Q! p( x& W0 }" {: \) c
if (item j( [credibility] of turtle (i + 1)) != -1)
+ X2 V1 {; P/ l3 J( h;;
判断是否给本turtle的评价质量做出过评价的节点
/ x" o- ?& F& Y6 l* z[set note (note + item j ([credibility]of turtle (i + 1)))) n3 k+ U3 h9 m5 f+ l" J) X/ I! L
;;*(exp (-(people - 2)))/(people - 2))]

+ W4 h* h( Z1 A* R! lset k (k + 1)& c/ p6 b; Y3 N' x, Y6 @
]
3 H; s/ m2 k8 S& ?* I- Fset j (j + 1)5 e3 K4 A2 n6 [9 h0 F/ y: a/ i
]9 I; j7 z$ y5 s& m7 j. Q4 n
set note (note *(exp (- (1 / k)))/ k)
, d4 O8 O+ L7 x- ^& d9 D8 u" ^set credibility-list (replace-item i credibility-list note)
$ R& L4 V7 C: }, [1 eset i (i + 1)  l' n# c+ R9 F
]
& q9 R' I1 D- a# y! N" kend
& U: c! p- d5 m( t, f0 `& u1 O- ?# ^4 M
to update-global-reputation-list* j1 I5 f. S' X; K& G. w
let j 0% ]% a/ m9 w4 M5 m
while[j < people]
& F7 N" ]+ s' _+ C! K9 f[
, S9 [8 O: k. z6 d$ J6 R! u" a5 `let new 0
" A! k3 y" t7 l* h6 ~# v6 \: \;;
暂存新的一个全局声誉5 b. @2 g. d) b$ \5 l
let i 0
( U/ v) _+ v4 g0 T# j- D9 Glet sum-money 09 N, V" b: Q6 y7 r4 i
let credibility-money 0
5 m3 k3 E, m# y: s$ E6 qwhile [i < people]$ }; J. E; N4 S- _9 n
[5 d; ?9 b0 S6 I' \$ z0 i
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
& j6 A) \+ x* ~7 k3 c8 y8 g# Nset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 S% }9 t+ P+ r& O, n* iset i (i + 1)
# z, F% Y. N$ J7 z! v: }]
" S- s4 A3 Y' _) i) H7 Q5 Qlet k 0# a1 G6 j9 V' R
let new1 0. J& C! L( j, }. M2 o
while [k < people]
  ~- E- U6 y) S( o  x[
7 O4 U9 R/ G- P% j" 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)0 S/ s" S) |7 o5 I0 Q5 Z7 u3 h
set k (k + 1)9 ^: j& E0 G9 v% M2 I( i, l1 f
]
7 J5 C" r8 y- S. N: f% r! ?set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 8 U$ J3 q1 e, H; y) p
set global-reputation-list (replace-item j global-reputation-list new)
8 \1 c& S+ P8 H7 |- J" x8 M  Zset j (j + 1)
; o, c$ s. X/ c" _]
+ R: K% A& }" ?' }! fend
& _% ~% O& P/ z& Z; [
8 ~  @$ h& C* Z
, W$ J# B" X1 E, o: h0 v/ i
2 a# d4 F& c: n4 K( d/ ~  ~to get-color& x( Y' D+ F2 V$ @; K
8 q6 K# h  M4 m
set color blue

( m$ U  R% H8 ^end  m/ R1 l! H( \
) j7 \% y0 z6 Z6 |) s/ z/ P. p
to poll-class
8 y" p# f3 Z  T$ L5 \2 ?" _end
: n* |  `% L. _: W1 J$ G& J5 k' U+ p" p5 m  c" c
to setup-plot1. ]4 G7 s+ X! X. r2 Z4 ^

3 X6 E  V: O$ E: B; yset-current-plot "Trends-of-Local-reputation"
; ^1 g8 ?  x8 y& s
9 W# A* Q& G. b0 X3 v/ g
set-plot-x-range 0 xmax
- ^; @; ]4 H& n) f+ _) h
* x+ p7 X" d) |( y. n- D
set-plot-y-range 0.0 ymax
+ D4 h& a0 ^9 R; b2 V4 d3 x
end  n% ~1 F3 H- R4 o7 S
+ v; Q, y# l; O( e: U6 h: _
to setup-plot2
6 C4 f! ]0 p9 N3 S
* j% H/ Z  {$ o1 W* A8 n% C% j7 P+ zset-current-plot "Trends-of-global-reputation"

* b4 @! _) r4 f% W. S8 a
9 \: D) o, f- j" R! e/ Y" hset-plot-x-range 0 xmax
0 A- m5 S) _% `/ _& ^6 S  j  O: E
4 ?# B3 U3 e, I1 T
set-plot-y-range 0.0 ymax

( `& p* {+ E0 m/ T; aend
2 i" ^- M. A0 w7 n$ W! ]/ l
" q: @9 U0 M1 \( u9 O* @to setup-plot3
- Y; {) i  ~6 Z
1 n1 o/ G# I. C& e$ i( R. [. t3 W) dset-current-plot "Trends-of-credibility"

8 `3 l1 S" P; x* ~3 h: D7 Z* y. {/ m! g) n$ I6 R' W
set-plot-x-range 0 xmax

6 Y/ M% a4 ?- v8 T' r* S* j
1 s& ]7 C% P- H, V8 ^% _set-plot-y-range 0.0 ymax
" w. H. c% V) x1 D) \4 c0 i
end
. h3 T2 z" c+ i
( S+ t% g4 }, p  G, T1 Nto do-plots# m1 Z9 N3 A: y' _1 `
set-current-plot "Trends-of-Local-reputation"
) U, U7 ~0 |. S' Sset-current-plot-pen "Honest service"' p# @1 u7 V( T, y4 k, A
end
, C' B& b$ |, G# |7 J! C7 \
7 Q8 |, }* H2 ]' W7 l2 g1 p[ 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.7 ]( q* l2 S! i8 K* Z* A+ z

  P% D: ~# C- y. q% w( S  d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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