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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:
' L- l% C2 _: Z( @' _/ R+ zto do-business
2 U. y* o; K, |0 k( U rt random 360; U3 ~; b5 H9 d
fd 16 c  Y( Z5 d, G) Y' ~( H; I0 ^  S
ifelse(other turtles-here != nobody)[5 U. e# G5 _. @3 w/ c6 G& u: ?! q
   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.
3 c3 s% f& W: W/ q8 W   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ! d( M0 A$ F$ Q5 i7 k3 }6 Q
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer+ B8 K0 i8 T0 S" H  j8 s
   set [trade-record-one-len] of self length [trade-record-one] of self
+ v$ q- X# F( i& r3 ~" J# o   set trade-record-current( list (timer) (random money-upper-limit))
3 A/ @1 p& c- a' f' R/ P2 \* a3 h8 T! a6 K# I. d
问题的提示如下:
& p! J7 W1 Y7 c! `+ {/ R0 G" c/ X2 n! H  C' j' Z+ H) N
error while turtle 50 running OF in procedure DO-BUSINESS
; W/ ^6 S4 {+ }8 @6 L  called by procedure GO5 B1 _! H7 y  ]7 `9 C5 M; D
OF expected input to be a turtle agentset or turtle but got NOBODY instead.3 \0 S9 I4 ^, C! ]' I+ {
(halted running of go)- ~/ h2 `: G$ Q* f6 i* W. W

: }' S( s1 }2 F5 A; W9 a- b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~~& X% o2 w/ D; v: h9 p- X
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
/ E) G. h6 \& v. S0 k7 o' mglobals[; T  H0 ~- L* Z7 r5 ^
xmax
3 t, q4 k7 B7 |6 d, |) W1 yymax
8 e9 K9 J5 g1 t- ~# D; G0 rglobal-reputation-list' r( K  G) {- `! J* w0 P+ g
. p$ X! A/ U; r) Y
;;
每一个turtle的全局声誉都存在此LIST/ k9 a; G6 U4 b3 E8 a" y
credibility-list
! I$ X6 }! A3 V5 p% l+ a- ^3 S$ e  s1 v;;
每一个turtle的评价可信度
9 Q3 F+ d( y7 K7 A: e  Nhonest-service/ g1 H; C- W  z# |8 Z
unhonest-service' ^3 S: d. @3 d' t$ Y  u
oscillation
8 o# y5 s/ q" nrand-dynamic
. ]4 k$ g/ ~9 p$ [2 h: B], ?7 w) q, q% N+ w8 o; H

0 o; v. V) J0 u% _) i0 fturtles-own[
7 `' [8 n, ^2 A7 S$ V! ~) z) P" ltrade-record-all
8 z  a! j% U" z;;a list of lists,
trade-record-one组成) ?5 A0 b) A2 h! y3 l
trade-record-one
6 }% I8 j0 ~- d! |7 r7 };;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录$ ]/ Y1 J0 u( `

8 n5 Z$ A% P5 K;;[
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]]; F; j* e/ a9 d$ l* m, f; B( m, W
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]3 S0 h) x0 L9 Y0 R* G2 R
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list1 D4 L$ f- @+ n8 J1 [
neighbor-total6 D; Z1 `8 J2 [8 h5 O# G
;;
记录该turtle的邻居节点的数目7 }1 }3 e  [0 d! p
trade-time7 B( e* }* C, M, ]/ o, F  ]
;;
当前发生交易的turtle的交易时间
) |6 g) C1 n/ @; @, Cappraise-give8 X* u% b3 @: o  _( O7 i9 ^
;;
当前发生交易时给出的评价1 `$ J% z+ a7 e! C& O& F3 @
appraise-receive
3 v4 \6 I8 n: M3 J# _;;
当前发生交易时收到的评价
* v3 p' _4 Q* g: V- X3 Y7 ~appraise-time
1 A  M5 g* |1 l3 G7 P0 Q7 E& q4 d' S;;
当前发生交易时的评价时间
& n: g6 l+ y. Q' c4 U, olocal-reputation-now;;此次交易后相对于对方turtle的局部声誉, V' {/ U( P* B- k+ R/ H1 m% `, _2 |
trade-times-total
; G" Y1 B% H4 K2 x;;
与当前turtle的交易总次数
4 S9 g' ^) |, N, rtrade-money-total
& m2 v" @5 Y  V, u. W& w8 V1 s" G;;
与当前turtle的交易总金额4 g, X# e' T  G) r+ B' z
local-reputation
$ Q5 y" {% h/ a. \4 xglobal-reputation. r: {0 U$ o- B6 k7 \
credibility
8 s& s& C5 `1 C9 Z9 s) j7 n1 N9 E;;
评价可信度,每次交易后都需要更新( s' L  J* r2 D( g8 R
credibility-all
5 M8 Q9 j4 ^2 {/ 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5 i, y+ X, G) ^
, d5 M4 K, U9 W) 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
5 R# a' t! R  \0 }credibility-one8 u8 L9 j. `0 W  g5 F, X8 ^, w
;;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# W! b% |6 R, {
global-proportion$ G) x3 p; V0 }# M/ {, C; X
customer
/ o$ i& q5 j, L, K' qcustomer-no
% ~0 d  |7 S- ctrust-ok
( ^# w/ A& j) Z- @7 ^" ktrade-record-one-len;;trade-record-one的长度
- J, f. w" _& F9 `- M* ?( I. h]
" U1 j5 C' B9 E5 ~$ ]+ _8 p# r, K9 ?8 X! ~: |
;;setup procedure9 Q- C% z9 o" `: b
5 O  V5 r' d( `  t, P
to setup
( x8 j# y* k; L" K( b0 C3 h$ R3 k; O* d  n6 H& {* E
ca
% R6 v( @# I% C/ y( i9 O( `
) }8 ^# i( H5 s/ K( u- a2 O
initialize-settings

# u$ J" E: t8 x, l# ?: b# M9 K4 N( }" L# c6 V
crt people [setup-turtles]
( q/ b8 `7 J4 h$ I; V
1 H8 Z3 w& I7 {
reset-timer

! ]+ w2 A7 y  g4 r+ x  F$ m# A3 l* z  F7 Q) e4 E. c- h/ J
poll-class
5 n! N, e3 ?% Y' S: W8 f( h

7 ~0 S  N6 ^& m* ~$ xsetup-plots

$ E, m2 I1 [4 P8 C; e
' M) ?7 c5 g! a1 @9 _7 [4 P% A4 p* Ldo-plots
8 _* O6 |9 [9 Z
end
; |- N9 u' i) [+ X" m8 M: v
! z# J* r/ m; `0 u# g! Dto initialize-settings
3 @3 |) H3 u0 Y* }& o2 M& m6 I  q, p
set global-reputation-list []

7 E+ ]. \) B8 K( G1 l
; n+ Z) U0 W; `) K2 ~set credibility-list n-values people [0.5]

' [' n  ^$ Q4 M
2 c( y7 n) `' E$ [$ Iset honest-service 0
' I' F. a0 ?( ]' Y
2 Z- G' m5 \5 l. T2 q
set unhonest-service 0
4 B9 _# }& K$ ~7 h) t
& O  k8 q( N4 c& x: M0 {
set oscillation 0
% h7 f% n  P3 c. [, G) b
! U& W, ?+ d2 }
set rand-dynamic 0
# J$ w6 W& N. P" n& L, I( d3 n
end
' D" M7 w% P: r3 z$ G5 h; L% J
3 z# g/ y' N9 Q+ yto setup-turtles 2 d- S( G. z; c' t1 ^5 D9 j0 T
set shape "person"5 K! S9 Q& l+ G* D* E9 T
setxy random-xcor random-ycor
" q1 c- v) H+ Oset trade-record-one []
( y& N1 g1 }% L1 v$ |

6 {/ n% f& V0 ]' v2 |set trade-record-all n-values people [(list (? + 1) 0 0)] . U# n) O5 ^2 X) Q# z; L

# m' k2 J+ d9 q5 }set trade-record-current []
, O: ?$ P+ U1 y0 Pset credibility-receive []
" g, f  B. X, k- ]1 x5 q  nset local-reputation 0.5
3 _9 k5 |1 M0 ?( O, o4 Fset neighbor-total 0
  K; |  g6 p9 R! R# d" }6 B  `1 G) H. rset trade-times-total 0' o4 o8 U( Q( o4 e7 r
set trade-money-total 07 o! A% L% a1 H# s
set customer nobody
) y3 ]; ~( t  {& [% Q$ _3 Bset credibility-all n-values people [creat-credibility]/ `! }# h* W. V/ e- _. j2 C
set credibility n-values people [-1]
7 t: G" Y+ s- j) x" ]get-color. u" M" _/ x  h( }, e" c
- F& o# X+ Y, o9 N* I# G
end! ~9 K- V/ U& Q1 f. X1 y5 e& U' M8 o
4 _5 M; Z- \* Q  M; e8 F& }6 l9 W
to-report creat-credibility' w2 l0 g; w& Z6 M
report n-values people [0.5]
0 v* T4 x$ Z3 b1 ?end4 Q+ g. y2 n# b: g" V  T* {& {
  r6 S/ M3 p5 ]/ m0 B
to setup-plots
4 \$ ~: |# {7 |7 m
( \! I- |0 {: H3 P7 W& cset xmax 30

% c3 W6 n2 f, W5 g: c( ?
: ?8 h0 \/ E* v* Sset ymax 1.0
" Y; y5 M/ W+ r" E, Q  M3 H

) [3 y0 P$ p+ e/ D+ rclear-all-plots
5 P  @. n0 W. Y# g' r6 r5 ^: ~+ g: l! ^
" G. O! h8 x0 N' {% w# D4 V  b
setup-plot1
! V4 H/ V, n' F  p1 o6 j2 W' a) c" k
( T9 b& r/ q5 M$ U* M
setup-plot2

0 {* d" M# [2 C( C: }! G: l* N7 {  v# C9 `0 X/ Y% G& L! R
setup-plot3
4 o5 e1 `4 I% X: g( U2 Y
end
) t( X& d/ l9 |1 j8 z+ |
, [3 W$ ]& C9 ~# r2 v;;run time procedures
$ K$ Y, j2 b/ M* P+ N1 d* h+ P1 l5 |! B. Z2 r/ g
to go
! ]; R- u9 U7 s9 `  E2 d* S* ~/ y# c6 H" s6 i
ask turtles [do-business]
- `8 ~" j9 A7 z' H/ B
end$ m2 w1 X6 ^$ B8 }
: Y+ U! c3 c; J
to do-business 3 n5 e) F3 a7 a' G# u1 U/ L; h1 Z
6 u4 D7 t% k2 F% l+ y
" y, }" }5 O4 ?3 h  L4 j- K* `
rt random 360

& {( W& h  P, P! W
5 Q% }9 U! Q/ x2 R4 ^: Q2 bfd 1

/ }) x3 _1 J, a5 o% w* ]+ v$ q
5 J' h/ L9 J1 p  fifelse(other turtles-here != nobody)[

, P' _; v) ?, w+ g/ X) j4 d, @. M: X# I0 ]. |
set customer one-of other turtles-here

1 Q0 O! B' ]6 k# R0 m+ X3 ^
9 R) _5 a+ S# o0 U( q4 P;; set [customer] of customer myself
- o+ a2 Q3 |" E! ?6 L6 t
6 R% d& n6 T' |' D9 \- w
set [trade-record-one] of self item (([who] of customer) - 1)! K9 @: @1 I. M6 o
[trade-record-all]of self% x4 F. }. `5 V! F) v
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
* N: T# N* W. Z2 O" r4 @$ x$ j
4 C) V8 q3 i! u  F6 s+ N4 h9 }5 Y
set [trade-record-one] of customer item (([who] of self) - 1)3 {7 T6 [* L3 U. V' r
[trade-record-all]of customer

/ i: X2 a) z! [: o, L+ _* ]
' O( ?3 l. }: _! x2 iset [trade-record-one-len] of self length [trade-record-one] of self

8 [& _( j( s% O: h, c% H& I, e
( _) G3 e+ x6 z! F8 c8 N5 {& {' \. lset trade-record-current( list (timer) (random money-upper-limit))
9 D4 Y% X! z. O& G% Z

5 U3 A0 M+ W: w" H( ]! ]6 w. t5 h4 _ask self [do-trust]  z9 D8 [4 U0 g) N
;;
先求ij的信任度
) l/ ~! B& |. Y9 a2 E$ b
% s9 H" f; \, I& Lif ([trust-ok] of self)
3 o. q5 m  A3 Y: V;;
根据ij的信任度来决定是否与j进行交易[
$ S9 P( B( v9 r$ ^' c* zask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
1 A6 s0 \/ N& ^  B( F( n3 `* w0 u5 B! c( E
[
% Z/ f" m% Q9 G1 s# y/ t
2 o9 o/ `  h8 o" D; p- X
do-trade

9 g7 c6 r8 M2 q, I" h
5 I/ s; k$ o, o* uupdate-credibility-ijl

) U' z$ j9 k: X& H  Y2 P* Y; a" F. m9 R' w( v3 o5 c* N% ]
update-credibility-list  c5 b4 Z% s. K4 A

7 e* D9 ?! I& T" V
+ Q& F% P% a- r+ R9 H  @, Z2 \update-global-reputation-list

/ e0 W# Q# b. U6 @- Y, m, M! f4 v% A7 y1 n
poll-class

. N( j5 N& |# _0 w* h# i5 `; I2 D% x5 Y1 A$ U, h$ k
get-color
) `4 `* i* |$ R  `+ j7 l& A

) I9 o" S7 g0 e% P$ E% e$ Y]]
4 U& q  o% d2 G: ^7 |. k
# i( H- A, E) Z! W; e;;
如果所得的信任度满足条件,则进行交易
, U5 D. i* R  q- p
; r5 _6 b2 k( q$ i# ~! k7 r[
- M9 v6 q- L4 s  Y7 T* y7 l
4 F( Y) {% n$ b! Y: M9 \
rt random 360
9 z" z0 T" Y! u3 {: G+ E' r
% ?+ n( |! h' ]6 N5 E; M7 e( g
fd 1

7 |+ B- }( ^( h( n; H$ x$ a2 r" G0 f" {7 ?& j# E
]

9 J# s# U  J2 `* n, J8 T" C; M9 ]2 z: W" s# E% q6 K9 z% ^
end
% U6 m2 R3 v8 [! u) U

, ~; e# M" d1 Q# Zto do-trust , J/ y; Q. b! o8 r( S* {
set trust-ok False$ y/ T" J: v; j4 d# Z5 D2 s; `( W% e1 A
4 c% ~4 e# ^7 Y4 g2 L
; d& k0 I; |" M8 a- R1 I+ R, V
let max-trade-times 0# ?1 Y' x5 J  v, u, C
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
9 T: \! Z5 x( B/ ^! f: m6 ?7 ~let max-trade-money 0
" e2 ]% Q0 L/ x8 I* Nforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
$ g+ _# l$ l3 k9 Hlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))1 g+ u; q# \' Q: ~. o) ^
4 o) c/ ^, G! j2 J( j" ^
6 r, x; S. X/ o: O3 _# c
get-global-proportion
& r- _4 d6 `7 p' G3 A3 x, s; Olet trust-value
* p" |, F/ U0 clocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

; J9 z, o+ W4 }if(trust-value > trade-trust-value)! L! I$ u+ J7 |: }, g  q/ O
[set trust-ok true]
6 U+ B0 U& z* X( fend
4 O* J+ u: j% H
+ m7 R) b$ n/ r8 f/ a/ @to get-global-proportion
0 m/ A* N2 B" `, I* qifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)& z( {5 \+ W( H: q
[set global-proportion 0]
9 K6 A' \0 s6 d8 m; p- y4 b1 t9 G[let i 0
+ q# H" Q! n) o; k4 I6 T0 Plet sum-money 0/ w6 g9 G- r7 `1 o
while[ i < people]" P8 |& V& O/ F( H
[6 w( D( }$ R: R
if( length (item i
( O" Z3 G  J- x0 m[trade-record-all] of customer) > 3 )
. H4 Z$ T. b6 i1 K1 B
[
5 V6 x# {6 `; p. p# lset sum-money (sum-money + item 2(item i [trade-record-all] of myself))" D5 X8 ?% w2 y$ R" i) D4 E( I
]
, |3 S7 m+ D4 C& r  N$ Y' ~]0 T. z4 ?, b* N- z% H% ?5 Y
let j 0
) H, j4 c0 |, p/ D7 ?" [let note 0. X; V! k1 ^& ~# J8 q
while[ j < people]
3 r$ @# t: d0 e# y1 k. H[& O, K$ c2 N& Q) @- P1 `; c& l
if( length (item i; G1 v, |7 b# G4 n1 ?! t, W% M+ J
[trade-record-all] of customer) > 3 )

- [+ t% ^& a9 u[; c( ^4 u2 o( {' w  e6 Y3 e
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
! b( I# v. R1 o7 `6 C! C1 h[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]$ e7 X5 D! ^8 ?
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]: l7 s' u9 T5 S- \* \% Q
]
* c% F; [2 x! ~7 _2 u]8 @' Y% p2 a/ a( a5 m2 f3 C% N
set global-proportion note
1 l5 r( ~, X( |  U( Y/ f4 r( {]; ?& a- C  X2 X0 K" q+ E1 H
end0 h9 \3 [, @! S0 X
1 U2 \; a2 u6 T2 {& r' F( N
to do-trade
+ b3 U5 a; s  a;;
这个过程实际上是给双方作出评价的过程
, y: R5 F3 w6 P" m  b5 ]  Lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
9 |  ?2 l9 U* x# [2 v: q7 z- Z8 oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
+ X& q8 v: _4 S/ M0 G8 M: c+ q0 zset trade-record-current lput(timer) trade-record-current
! j2 G% Y& N; H+ u+ r/ m;;
评价时间8 i2 a& O7 k7 Z, C
ask myself [
* Q/ r( V) m+ Z$ \; oupdate-local-reputation9 @: O! T: J9 ?0 Y2 H
set trade-record-current lput([local-reputation] of myself) trade-record-current# v" R% {- {7 r! z* a; ~8 C
]. h6 X$ S3 [$ j* J( W( |
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
' h; _+ B5 w. N  a;;
将此次交易的记录加入到trade-record-one
6 m5 ^  @. [. ]( T/ x, rset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 J. X5 _8 h7 \' y2 N
let note (item 2 trade-record-current )6 |2 w4 \8 I7 d% F/ x
set trade-record-current. b3 E7 V2 W% N0 `6 q% v; Q1 m) x
(replace-item 2 trade-record-current (item 3 trade-record-current))

. r# f8 L- ]$ Iset trade-record-current
' t' B8 o& P. h7 v4 P  q(replace-item 3 trade-record-current note): ~% T6 y. \3 O" M

* b, J& o: o4 ]* ]6 _  q, V% N! T$ m' j

$ y' k, t* p6 [. G1 ?$ T- `ask customer [- w8 p2 S8 T' V" M
update-local-reputation3 R% C* ^/ L. c2 o' d5 i# w
set trade-record-current, l: x7 S+ z3 _9 b' u5 p
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
4 I$ j# m  `/ L! Q
]
3 ~$ z& b& x0 _6 i5 p5 Y. R. `
. E7 v) Z+ \( s& ]! I

5 l! U9 x/ f0 N" |0 a2 I6 f" Rset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer* O0 y" J" E. x+ S$ Z8 r

( ~6 v! W! O* {$ ]; Kset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))$ G- D6 e9 i$ H8 a3 e
;;
将此次交易的记录加入到customertrade-record-all
$ W9 t1 J# i( I4 z0 W  K+ Wend2 b9 x$ S( h3 E3 ~% _
: H. a' x7 C( b% K
to update-local-reputation
  K4 Q1 g9 _5 A! z& H% \# Qset [trade-record-one-len] of myself length [trade-record-one] of myself
( `2 b3 N3 g7 C& d/ K: I  s7 N. n  `; d

& z; z8 l; n& h. v* r;;if [trade-record-one-len] of myself > 3
% q- Y+ {/ [: w/ Y+ u
update-neighbor-total3 B3 r0 Q. }& e3 W+ b
;;
更新邻居节点的数目,在此进行
3 `% X" S8 n; b" m3 llet i 38 e4 H4 L% H# j+ G* w
let sum-time 0
  |3 C5 h) V1 Wwhile[i < [trade-record-one-len] of myself]6 v3 U4 D# ~/ T% r7 z
[8 n+ Y0 `5 ~8 N! T) ~9 b
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
: [) g8 \# [$ |' m  R& O  ^8 y- e. ]set i
3 k4 G* [/ `, O3 b( D( i + 1)

, B8 O  x& G4 i& U]
- I% X/ c0 t  v: x% M8 G, ]5 Hlet j 3
- s" Z& [, k+ a( ^" b9 C" olet sum-money 06 a  A/ u3 J4 e( @- c/ q
while[j < [trade-record-one-len] of myself]5 D( a! l$ L3 s2 u  a0 H3 p4 \
[! H$ I" y' l: ?' z( 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)0 D( K3 C) g$ _+ H. i1 c& R
set j/ M+ E7 f( h( h) j
( j + 1)
; F/ L4 q* \( }  b* d" k% M! P9 [2 y
]
; S% }4 ?8 n; M) ]9 S8 @+ `let k 3! S+ X# ?* r- i+ g% r8 n
let power 0
- ~8 U' u/ K; flet local 04 V* P4 M3 A: n
while [k <[trade-record-one-len] of myself]6 y. K$ j% x, L2 E
[
1 d3 l/ C) k. W) ?5 Fset 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)
( Q8 T" n1 y4 V, B6 [, k  bset k (k + 1)
" W2 _& [* U& s6 D5 L( F]
/ h4 C2 i) @- f) k1 Uset [local-reputation] of myself (local)  ^0 y! S$ k. y/ f
end
* S  ?  n2 C+ K: f/ K- {! `
0 k. ]7 k. P1 Jto update-neighbor-total" Y! y2 E1 C3 S4 i! o
- i; u- d/ l; _5 z) ^( M
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
  n7 ~6 M) c/ i3 d
; Q7 ]9 d( j$ U/ @' s+ U* |

2 U* B& d0 K: R: h: U* \end
. i  J7 o' [4 P$ _$ u6 f! j" }0 @3 T, @6 U- U/ B
to update-credibility-ijl - Z5 K2 \  X4 N3 b$ R2 E
3 V" {3 Y4 w3 p' H
;;
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。( C' L9 e/ T% Y
let l 0$ I0 T1 d6 M. k0 E; D- ?
while[ l < people ]( h3 x$ F6 q5 R" F& c
;;
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
3 ]7 q, d8 o4 @$ K1 q  x[( |9 {; w. D8 J  M$ _$ u1 I
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)" g. @$ f4 r2 x" T& [5 y9 s
if (trade-record-one-j-l-len > 3)1 A$ P# Y) @, L% M$ s9 _3 U6 Q
[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
7 ]% p  C) M7 C% _, Nlet i 3) H. i) F1 s& v0 U
let sum-time 0: {- x  c  e: S9 n8 @' U
while[i < trade-record-one-len]# ~5 X! W! U6 y( @8 y8 Q  A) H3 U
[3 p. m) S" x4 b" |2 x
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )! M3 V0 m5 i3 `# K7 I' C
set i) {* N) F* h4 G8 h' _
( i + 1)

% m8 j% y5 M5 B' M: n% n]! C9 [6 v) D) `! \9 D* X! Q5 `9 ]3 J
let credibility-i-j-l 0
: R, Z, H& C# C) y1 \; k8 Q9 C;;i
评价(jjl的评价)  R8 w% Q# n  S8 @
let j 30 j, v& C0 J( {
let k 4
# ^. \& m8 I  Uwhile[j < trade-record-one-len]! e  R3 U& J2 U. R6 }6 Y: l
[3 B" ]1 {9 d( M# f
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 ~8 |: U2 K; y  M* Lset 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)* H/ K8 C% D! G3 [  D
set j
- j, n/ t, A& v( u( j + 1)
& \( S, i6 P) A4 [3 C5 h5 M+ U
]7 [( P8 e" U; `2 ]
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 ))  L8 Y5 ^$ ~1 Y: r' f$ f! e. U

6 ^3 e! P' g. b5 W
" p5 a" ?' |* i* Z- C/ K6 i0 \
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))' ]% E2 V' Z* t/ F
;;
及时更新il的评价质量的评价
7 P' \6 i3 |' _$ y8 }8 Wset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 O! C* x  Y5 {1 l9 Hset l (l + 1); Z- J+ N; {& h6 m. I
]
  U3 [$ w7 ]/ _2 P; X8 Iend6 C2 G/ H+ _9 m' m2 M! e
! k: C8 G, I: {3 W+ m& T. J0 B
to update-credibility-list: A9 d( Q) ~& q# V) ]! a2 M
let i 0
  t) E& K/ Q# B; B& ywhile[i < people]
  u% ^1 n  ~: f[
7 M& C0 c  R0 |' h# p7 }3 Y0 Klet j 0" |- N* Q, z6 j; Z3 r1 }
let note 0
# b+ A7 K5 i/ y( k( @let k 0
: S# L' P% r" ~8 {8 q;;
计作出过评价的邻居节点的数目; ^+ _, t7 ]6 d1 S
while[j < people]8 ^  O4 y- r" x& J$ Q
[
% p: y3 n/ E. Fif (item j( [credibility] of turtle (i + 1)) != -1)  |% C# H3 k; E. ?. c# o
;;
判断是否给本turtle的评价质量做出过评价的节点
  s  e" C5 t& D( m5 C[set note (note + item j ([credibility]of turtle (i + 1)))) h+ L$ P8 k( s4 K6 C* m
;;*(exp (-(people - 2)))/(people - 2))]
8 _/ H) P, J1 A9 y4 Z# A
set k (k + 1)) O/ J* B+ r+ A% x
]# p0 J' O+ I, D6 b) p4 K- Q
set j (j + 1)
$ w# d6 m6 ?# k; F4 D: }]1 U. E5 ^% i4 i9 b+ k6 _5 {
set note (note *(exp (- (1 / k)))/ k)
2 n! O8 X6 q% T$ {$ Pset credibility-list (replace-item i credibility-list note)1 I' E  r. @7 y2 s! R/ y$ S6 }
set i (i + 1)
: m% W. k/ ^" \( X]; Y% @; L) n+ J  E$ N( X: K
end3 ~2 c2 w# C, |' x  a# w# ]: Z" b
" Y# a1 l: b$ h, i5 v8 n% ^7 A6 Y
to update-global-reputation-list, r3 q4 E7 r, x
let j 0' U+ v' B$ j/ }6 S! i+ k
while[j < people]8 @' o8 L" J& M3 I5 R) k
[" K, d5 M7 y' N2 [! B. A
let new 0
4 w% E& u, H( x) x- m9 _8 V;;
暂存新的一个全局声誉% z9 Q+ F/ ~. U2 i/ F
let i 0
7 j. x, }7 l$ r2 q7 f) p8 p* @let sum-money 0
% |3 m  [" B5 k0 Q1 Ylet credibility-money 0. }( h9 y4 u  C, u) P$ D3 T
while [i < people]$ Q9 I* Q/ E, A- B0 u
[
- V  L/ q2 Q! s& p: _  {set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))! J6 E9 o8 q+ ]3 q! X8 [4 a2 ~
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
4 x3 k; L$ [2 Hset i (i + 1)
9 ~) \+ z$ A! x5 H]$ E4 ?8 a7 g+ V8 n" V
let k 0
! W( b& {" S( ]; w0 plet new1 0. k6 |/ W1 ?3 }7 H' U% I% ^0 K
while [k < people]
2 M3 h* ]( Q7 `. I; H+ m0 c! }[9 h+ s+ j. A1 r8 J: _" f1 J6 a3 O
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)9 j2 T4 p* `/ `% W( r
set k (k + 1)2 M/ z1 `4 a, A7 J
]
( j" Q* [2 z  U9 L5 b9 [set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 9 _2 ~. D4 `& t" G5 w. p
set global-reputation-list (replace-item j global-reputation-list new)
0 b2 O; l7 o8 C5 N' v' c8 _8 Rset j (j + 1)% f3 m+ E% u: C# ^% f9 E1 a
]
: l! O2 |. M3 q' T" J# q6 ~end
' i2 O& `" i, q% M' W, y  z
' o* c$ x/ N0 a
7 A* h. \+ m9 ?5 N! s( r5 j6 W' q7 b
$ ~3 g' s3 r, P. Z: ~5 |to get-color
$ U* K4 P; y0 }6 C  J, d+ q& B/ ~! T/ O) o' `
set color blue

4 g" D. U# e$ }: Tend, B' {! N, U/ f( I( n
1 _  i, t9 \6 g2 l  ?) Y7 n+ K0 R: j
to poll-class
; ^; A8 R* V! E: M8 Wend
( W2 w' c8 T' W$ [, b
2 z" f5 @* Y/ T( d. nto setup-plot1
# d$ O2 w& \6 R4 e+ }' j1 {2 ?
; r8 X) c9 @0 n3 s% E; T1 n/ K( m/ zset-current-plot "Trends-of-Local-reputation"

8 x& i0 T  o% M/ `0 n, m5 K5 m4 v8 C1 R& r0 w, |$ y7 ^
set-plot-x-range 0 xmax
" ?- t' u8 }- {* g

8 i$ X! p% U- u5 Q' B( aset-plot-y-range 0.0 ymax
. H4 t4 D3 q( Z
end$ W/ L9 k" a" S' ~$ y# O  C
- Y9 N5 D) k/ x& b: c6 _/ @6 J
to setup-plot29 w7 _9 ^  b: H) D# D4 @
$ j  I- D' E: |  ~' T+ p7 e7 Q
set-current-plot "Trends-of-global-reputation"

0 H& M& d# g& _5 W" k: f0 l" V5 E0 B
set-plot-x-range 0 xmax
) r7 n' v. W! R1 x9 J) E
) G0 R$ O/ e( b/ A- F% D
set-plot-y-range 0.0 ymax

9 J& z, s. |/ }; Fend
  d& U& T$ ^  P6 H1 i2 C7 v3 V$ A
* w3 o+ S- f5 p& O* L' Jto setup-plot3
0 i% o, i5 n! L) V% T/ Z+ X6 d. p7 K0 k: @" a9 R8 |2 M2 Q
set-current-plot "Trends-of-credibility"

0 |" {5 W0 W$ o- M9 S
. i- T& X  S' dset-plot-x-range 0 xmax
& L+ c6 T" @9 C3 D  X

& @" ^, c3 ~; A5 ^) @7 N* l; Pset-plot-y-range 0.0 ymax

# k( Y1 ~/ t2 J) T0 z: B, A" hend
1 @( g( a# g3 W6 d4 ]1 R5 i! ?2 C& i2 B- h) F: x- a
to do-plots6 I/ u9 I# B3 A' V9 n$ S7 v
set-current-plot "Trends-of-Local-reputation"
! f5 @% O4 T3 F% F$ I) _( Y, |set-current-plot-pen "Honest service"6 I+ g8 p1 D: x0 Y
end, R2 p% F% {- R4 Z2 W: b# \

( ]! P1 w) n: @[ 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.
, s+ c& ?3 E3 N! ?+ n) [) w$ i1 I% M& P- x, w: {. l! P: \
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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