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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:2 l% D% q8 w/ L
to do-business 8 t/ |! t% `5 g+ P* N1 X
rt random 3601 s1 X; _8 S0 Q# q! W
fd 1
: Q# U$ e/ @' N; u ifelse(other turtles-here != nobody)[
* v& R. ?$ a5 q' @; V; q/ b   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.# }7 y  @% b; j8 {& h+ @9 Y' t. R
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
, \/ y4 w# s5 a% I* B6 m6 z% R) k   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer+ J, b$ ]- X  }& U( B3 B' ~5 u" d$ Z
   set [trade-record-one-len] of self length [trade-record-one] of self
' ?' i5 _+ G. F) e. ?: x9 I   set trade-record-current( list (timer) (random money-upper-limit)): z. \; q5 ?9 L9 X

5 s& F7 \' E  s" v问题的提示如下:
, m( A! z. |% a) m. T
- r6 {/ P% j5 o/ kerror while turtle 50 running OF in procedure DO-BUSINESS+ M5 Q3 ~; F- w
  called by procedure GO8 i5 }. ^  j4 G' [, E. D
OF expected input to be a turtle agentset or turtle but got NOBODY instead.- N- i4 |& T. V, n. M" P, N
(halted running of go)8 v3 b& R/ o, ?# o

$ z! y" F3 V. M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~~& V6 A7 a0 ?/ Q  E, N
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+ v: a2 D% ]. b7 |: N9 v
globals[
4 Y+ H% x3 m6 _( w* cxmax
3 c( q( s4 n- oymax' Z5 |$ v; m" {" t' m1 ?
global-reputation-list
# L3 U, C3 U& n. c  Q
2 n- @5 J! C8 g;;
每一个turtle的全局声誉都存在此LIST  }1 d+ s1 W' H  k7 u* w3 V
credibility-list/ K1 }: N1 v; G+ f, S* n9 g
;;
每一个turtle的评价可信度) Q8 _$ u1 e1 i$ \
honest-service
/ X! |) {" b/ l0 k2 C' kunhonest-service
5 G3 f/ e- w' Yoscillation# x0 V3 q, m3 ]; a$ ^" x- Z
rand-dynamic
4 F' K9 Z. W, q+ B$ \0 q' B! |/ Z& J]
+ A; k' z2 i/ N3 E6 }) n' o6 J/ ^$ l/ x6 Y# R1 {
turtles-own[( Q- B+ |, s9 J! ~5 B, i# Q
trade-record-all
5 h$ U" Z9 j8 I5 k+ T;;a list of lists,
trade-record-one组成
1 h  t" b7 m% }- W. S0 `3 mtrade-record-one
! v/ w' b+ f# \;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
  A3 V/ G( x- Z, H+ b4 J" m7 _1 Z: b' ~& c
;;[
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]]+ u; X2 J( h* B  b' t/ o, r2 @( ~
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]
, d6 _. ~7 r" }  O4 w" @$ n3 }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
' M  N, L  J# U, Kneighbor-total8 A9 k6 Z/ j8 `' I
;;
记录该turtle的邻居节点的数目& I+ P5 W0 h# G9 Y+ o5 a* l7 |: N
trade-time
2 [/ `' P7 [. T' [* m' z/ Q;;
当前发生交易的turtle的交易时间
0 K( z4 m6 ]" J, j+ a& @appraise-give8 ~  n% Z0 V! y( |2 R/ X1 }. b
;;
当前发生交易时给出的评价
! q! [) I! C4 K; j! o) G+ dappraise-receive
* U5 Y0 V) B! @, s7 H' T6 a+ n+ L;;
当前发生交易时收到的评价
0 M; A! n. D) ^5 t% yappraise-time2 f4 r3 N  T+ k7 C$ ^5 p; O  m
;;
当前发生交易时的评价时间4 l+ F2 w0 H/ C7 ^# k3 b
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
8 j" _! Q) v7 K$ V! mtrade-times-total2 B) p. x0 u8 S! r2 z5 H' y  Z
;;
与当前turtle的交易总次数/ E9 n" D- ?  X6 h1 s
trade-money-total
& m8 P$ L# L8 F4 q;;
与当前turtle的交易总金额
) i9 K4 O# s. x3 W* {# Alocal-reputation
9 z6 @: d$ ?: ?4 C. F+ A! {, M' s$ aglobal-reputation; q* \& u" h3 t2 V' D
credibility: w+ ]8 J6 m  X9 n' L
;;
评价可信度,每次交易后都需要更新
+ j" F9 v3 b; J3 a# ]; l  p3 lcredibility-all& |, Q2 l, g- @. d5 B
;;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: n) I" J* i, ^: i* ~8 T
- D# J' q! I2 J9 Q) _7 o: o
;;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+ P% H/ {8 N. ~% X7 W
credibility-one
. Y4 \' Q9 Q' L  ?- ]; s;;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+ z7 f0 e4 `8 \) F* F1 h
global-proportion$ O+ i  u4 j8 \) v0 t4 ~1 N6 F
customer
/ }) E: C8 V/ O% i9 R, fcustomer-no. g. n9 ^: U6 `- \( H" d; |
trust-ok0 D* n) g' A& E# S3 [/ `0 U3 S
trade-record-one-len;;trade-record-one的长度5 |, g  @. q5 O" b1 H# f4 B( [
]
3 y- _9 E! M7 h( b/ t: y! t9 ~, P- Q! K
;;setup procedure9 ?7 I" P9 b. o& Y) j) L

% W9 M. j5 i" ]1 ~. D' S4 ato setup4 v( O( g! z! @# O4 e2 [4 J
: a/ [9 \/ w+ A% M8 ]9 a' N( F+ z
ca

3 w; g- G! N; Z5 {/ R4 X" s
" ?; \- F0 q1 a1 W) Einitialize-settings
- f: P  n3 i( I. l% S& h, M( K) c

7 f4 z8 U  Y, h" D1 lcrt people [setup-turtles]

3 M7 C* s/ p& H- q5 Y  |, w, j- h
" r; D$ Z/ A4 n& _, l; ]; U" A9 Lreset-timer
* U4 Z7 S* N5 A: Q3 U  h1 B/ v

* z2 Y" X- {$ e9 Y$ u) [poll-class

; q- t1 u4 T/ [$ Z  S1 y. F3 J$ y( E$ k8 |% o9 {
setup-plots
  x1 N' w- F; {4 B5 n$ ^& \, P7 W; B
( z, s, f* l" M: m
do-plots
& o: ]: g. n' D3 ^
end
( B! y7 Z$ V) [. C' S, V  ^
! c* M9 V' O* n& u- Z" Bto initialize-settings8 p. @6 O' l1 v2 n
- S  o* v  b0 e, d- D
set global-reputation-list []
6 n7 ^# k$ m* O; Y: h
2 Y/ l3 H2 Q: H1 w0 a
set credibility-list n-values people [0.5]
. o) y1 G9 m% L% p( I0 r

* A. s9 o5 h/ Q) _set honest-service 0

6 @$ n+ i# {; W3 o# h* K8 R
$ A: |. V& T* _set unhonest-service 0

  V" w  Z) ~$ s6 m1 J
- `' R, [  b7 D# a. C/ z1 Nset oscillation 0

$ t1 t& t& I4 e" Z. d- m3 B6 ^
8 p4 ^+ X" P) E1 ]* F, Cset rand-dynamic 0
" P5 Q) ~8 Z% J% O
end" l2 I+ M* r0 r

/ u( c3 ^' @/ h8 {9 T# e, D" ]to setup-turtles # q; Y" A# Y9 P. t
set shape "person"! K& }, E  \+ k- k
setxy random-xcor random-ycor+ _4 n* I% g6 p/ L6 h6 W
set trade-record-one []
7 X9 s# U6 ^+ E$ n

1 H3 X5 n  ~+ B  z4 K9 ?: tset trade-record-all n-values people [(list (? + 1) 0 0)]
5 q- r$ K& n/ k8 B! b
" Q) P1 j# q2 s6 i" f, C
set trade-record-current []$ y( e- M5 H  F- a+ S; w
set credibility-receive []
/ M7 h3 m( ^( Z: Cset local-reputation 0.5/ B( r$ D$ |( [# a7 \2 ^( e" d/ J
set neighbor-total 00 l' ~0 M) K& f6 X2 ?
set trade-times-total 0
, A3 E( z  m$ U, |3 W# i- F) lset trade-money-total 0" m0 U  A- Y% f5 I1 [7 Y3 h8 _
set customer nobody
: z' [7 F( _. j" {* ?8 Jset credibility-all n-values people [creat-credibility]4 m& R4 y/ Q( d$ i
set credibility n-values people [-1]
$ q; k- B3 R# hget-color
( J! c0 c2 C- b7 ^% z; N: T
9 y5 j( k$ F5 X9 H" ^2 }/ \2 K
end! _5 C& v3 y  h# O0 q
; c3 V5 L8 Q. k
to-report creat-credibility* }( w! g; s# s; J: b- j4 B: |% r( a6 b1 z
report n-values people [0.5]
6 S: ]  t6 ?2 lend1 r7 W3 v$ e+ H/ V( i, R' g5 u

# m1 `0 v, U( @; U' vto setup-plots5 g4 p% G# _/ ?! U, b1 M- N+ C$ a

# A9 G- a$ _- W- z. f# Lset xmax 30

( u2 a* U3 `  L( N' l
6 h0 Z; S4 I4 b( E" N# ~set ymax 1.0

3 I) R7 k- E( D' l0 |
- W% G8 ?5 |" [; Iclear-all-plots
; N" i: N: x! v& V
+ G$ d1 x8 I6 v: J
setup-plot1

. o7 R, O. r  p5 a  }
! q7 a* m0 v2 k$ @, ^setup-plot2
' P  W5 m7 L$ G# V/ A' _7 n/ }
! E) s& S6 {& Z; Q
setup-plot3

5 h2 _6 r. S5 S2 oend
$ Y8 g5 B: `1 w( H* d* K+ F, a( `. ]8 j7 c% s6 B1 {- G6 k" e
;;run time procedures
8 J1 N9 }+ @, ^( O. C* }0 b# g2 l8 E
to go: X+ p' P( J8 u% T0 ~4 U# n: v3 C! t

1 o/ X. r7 _' N* q( X8 q- }2 _ask turtles [do-business]

, I5 O- }# r6 h' t8 a: gend- y  [7 O2 Y2 d7 k' `
5 ~0 s) R  m1 A  d9 ~# W
to do-business
; f5 R9 ?* Q3 w8 o3 q2 ~# p, o
4 ~6 @' u+ i5 R* P) ]9 |

5 h, ]0 ^* Y6 t( P( j& O% [) n, q, crt random 360

+ K! Q0 Y, q  d- i1 r  N) b) h. R
fd 1
: n% I  a: f7 U

( r. \  ]+ H$ Z! P  m* o6 a5 x, S4 aifelse(other turtles-here != nobody)[
' g3 d8 [; }) B9 H/ S" u! F

% N# v* A7 E+ j6 u/ E" wset customer one-of other turtles-here

( j& K  s3 _0 B% D( p- s3 t+ _& g0 P- R
;; set [customer] of customer myself
5 |7 S8 O8 u2 X
% t5 n- P  i& N2 V; O0 `5 _
set [trade-record-one] of self item (([who] of customer) - 1)3 O2 X5 U; P7 ^4 r5 S! J& `- R1 [/ i
[trade-record-all]of self" j; d- R/ o: y. w9 J- Z: f
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
# h) d1 V4 f: d( D0 X

4 V0 P/ b! n8 {% k2 L2 d% mset [trade-record-one] of customer item (([who] of self) - 1)
& a! Q$ y  d: d[trade-record-all]of customer

- E. K& B% x! Z, B6 B" ?% k. x8 e0 K9 X
# C) V. ?; Y7 h6 V( x" gset [trade-record-one-len] of self length [trade-record-one] of self

2 |- o) O/ J0 I( p" @
" {% t8 E4 t3 }% P9 i  ~set trade-record-current( list (timer) (random money-upper-limit))
- K. c; K1 x& `% m& Q& N; R
: U/ h+ h. L' V& D# f5 f
ask self [do-trust]" i, m) z6 F! N8 Y# \
;;
先求ij的信任度1 i9 ~" R7 G3 v
( P% R' i- Y' B1 ~4 h
if ([trust-ok] of self). }- x# w( I  w3 m5 S0 Q* A) v! z$ n. {
;;
根据ij的信任度来决定是否与j进行交易[
& K! P+ S: }$ C+ v5 d2 ?; P' Uask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself* L/ O3 L7 C, |
/ E' M! u( s" N5 V5 |, b9 W$ {
[
+ y7 P9 d* B, X1 l
% Q: S3 D! ^! A5 o; x
do-trade

9 _- |9 i' R2 R* {- C) K0 d1 C  A* b- d* M3 z# _7 [2 s* ~- u' x
update-credibility-ijl
$ t% L1 }! O, y2 [

# G: ]# u. K  T* R" P+ f  Uupdate-credibility-list
* Q2 B* ^# L6 Q. Q
" s7 E5 Q  D- d7 K/ Z7 s8 F5 W7 T

/ i& E$ _) ]1 O* M2 T2 g# Jupdate-global-reputation-list

" i$ H- q! J6 q6 [1 ^& d$ l  l2 z/ m4 X& P
poll-class

$ w$ j& a% w, O- y& ~. A. }+ _9 q6 L1 Y2 V/ ~1 g" r9 w+ Z* P
get-color
0 i" l8 @9 l' }, y" Q9 f- d$ u6 A
' u; B& O" f2 _6 ^- f
]]/ Q1 R* a: d; D; e
& ?" t5 Q9 Y2 Y: [+ `1 c7 R
;;
如果所得的信任度满足条件,则进行交易
6 D. w4 r% u/ ]/ w
1 [$ K3 x. n; f- \[
! @3 f& Y6 }6 E9 }

/ s' i: Z2 o3 {0 \) p7 Art random 360
+ ^: p% i" A8 ^5 i

$ W! q$ |" d, ^% z3 Dfd 1

% H( g1 B, F  \* C7 @* n/ ~
$ D% [; I( I9 T5 h# n8 E6 W( c]

; \4 N0 F! A. l4 p  t2 ~
  M4 c. C0 X  _, N& ^end

7 b) y( T: H' q6 ?
7 Q( v% ?+ n' S% ]5 D' Sto do-trust 1 i6 I, f' r( d) i9 o+ m
set trust-ok False7 q# b0 G9 [7 @

& J* n; ~( ~$ M- q1 ?

2 O. V4 {( c) wlet max-trade-times 0& |; K( t2 q8 p0 o
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]9 z/ U0 o6 S+ D1 E9 i  q: `
let max-trade-money 00 w& p7 }% I) J' ]) t; q. h' m, h
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
7 }6 v1 H1 |3 j9 F" H, A. Zlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
" Z$ p( ]7 R0 D2 m
" j6 H4 {/ H3 k
( Z8 Q; M& L' c; m+ d" N
get-global-proportion2 Y# J: y" E3 K! {1 k
let trust-value8 {) p# Q* g6 X. H( y  i
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
# b, L, ]9 B1 X
if(trust-value > trade-trust-value)
& G0 t# A+ ^" n7 |2 `- T+ y[set trust-ok true]5 {) ^8 k7 O2 y
end; C6 u5 A( [1 S: W/ d8 K9 z: O

5 D, V% R1 H4 @to get-global-proportion; w8 R! e+ B- p3 W/ s! N" Y, F
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)# a* c4 q- ^9 f$ t
[set global-proportion 0]. i: C; @! U% H# h
[let i 0
/ o$ B; W1 g/ J) h3 ?# G5 o# g  R9 Ulet sum-money 02 n1 d+ y. k: v, g  T( ~  s
while[ i < people]5 T  j" k' J  E' q7 W
[
, e/ S; v! K: b/ xif( length (item i0 t' m$ f7 W* x  q  v8 U6 Q
[trade-record-all] of customer) > 3 )
  g6 m; A/ G( z6 }
[
4 d7 ^" r$ L( v. u: b6 x# Eset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
0 k, H" M, R8 p8 ]/ C4 x/ s]
5 Y0 U4 w; x$ v3 O% V]
9 g; q% o8 \+ t5 Q- ~* ?# plet j 02 h5 }  r6 O+ G
let note 0& W  |1 }% h( e( G7 L& K$ u
while[ j < people]
( v) |9 i( z& x8 L/ P[
" f* ?) a! C* `0 @$ {: D. Kif( length (item i
5 m6 a- x% x8 l! o0 p4 v9 b[trade-record-all] of customer) > 3 )

2 h2 C$ a# v1 T6 w# N[
9 Z/ E; ]2 ], L: q' w8 rifelse(item ([who]of myself - 1) [credibility] of turtle j != -1). p& g) G/ M  ~) v3 I. v# O  ]$ R
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
" F8 Q" ^0 `6 S3 u[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
/ w- W% \, B/ Q; w, l5 r+ `]9 \3 M. P: R" C; }3 g
]. ~# Y  K# l$ D. B
set global-proportion note* ?8 k' R5 h/ e
]) t: F' K- L  Y# S5 e; S
end" `* F0 i( b( G/ ?; [" `
3 `% P( d! ^2 P6 o8 S
to do-trade2 y! U# Q( k6 c; F8 \: X" Y4 @
;;
这个过程实际上是给双方作出评价的过程
$ k& m( F7 c& dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价/ W- e! L8 n' r* T1 X
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价1 K9 ]& o* U0 m/ m$ `
set trade-record-current lput(timer) trade-record-current
% ~& B! i% a/ N5 v4 X2 f& n4 ^;;
评价时间
7 \( `) i7 A5 Iask myself [
4 J7 G5 e  w( l) z4 {. l/ [update-local-reputation# J' S; h0 X! G% f9 b: t
set trade-record-current lput([local-reputation] of myself) trade-record-current
: e$ e" Y7 \+ _2 F* u6 C2 X3 l]
" g' U' I, e  e& |# m  [set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
5 b. e6 @8 x& @; V5 A8 W+ `/ x;;
将此次交易的记录加入到trade-record-one  u) ]7 Q- V3 B6 w, B1 G; E
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)  b6 Z1 V8 H6 h0 g5 W8 S; I
let note (item 2 trade-record-current )
5 h) }, B, N8 {set trade-record-current8 v' S, O, }, N3 J; \
(replace-item 2 trade-record-current (item 3 trade-record-current))

0 L1 |0 O: e! ]* _  P0 p$ E  yset trade-record-current
9 n; r# y+ c8 H0 t* r2 g1 K: p(replace-item 3 trade-record-current note)# k% f. a1 K8 b9 w; F" P

. u' I1 E  q3 Y- Z

& b& N# Y' V5 c- F0 J0 }ask customer [1 c  E+ b6 u$ G- O4 l! }. o3 Q. p; Y
update-local-reputation  S/ z; ]8 M$ M
set trade-record-current
# h$ h5 i% F4 \7 I* R(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

  X3 Z! R9 a" f. ^3 A' o! z]7 q; T( t# s$ a: S* E# A

6 Y3 F* _8 s7 Y4 z9 {4 p

9 B& X4 p" G8 e& H: k1 L5 y9 y# Q6 G/ [set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
) l2 d% O, ?3 p! b  t. o

3 C5 \# e7 L9 i% Rset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
8 J$ d" ~* j' [; v;;
将此次交易的记录加入到customertrade-record-all
$ ]2 \  |; [& O: |end1 M0 M4 h3 H( E* a1 v3 ~& k7 [
8 M5 o& ]+ x$ x; r/ ?
to update-local-reputation
* \  `3 G& D# \+ ?; Dset [trade-record-one-len] of myself length [trade-record-one] of myself
5 s! F2 X7 l& M) K7 I& W# b( P" _- U6 s6 R0 t+ B

: {! c+ `) H2 T;;if [trade-record-one-len] of myself > 3
6 d. P) a5 j6 P; \! B% `
update-neighbor-total/ Q1 A1 D+ y, }! w7 [" n
;;
更新邻居节点的数目,在此进行
3 s" }9 x2 V6 h# ]) `let i 3
3 }" z" g* P7 Z' B) mlet sum-time 0* Y0 K. P/ `6 U( P' O5 T
while[i < [trade-record-one-len] of myself]; j0 C9 O3 H- }8 Z  R7 N$ U! W
[, \( J+ q. i& n4 j! D& t/ Q
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )6 m/ c* E2 G4 k2 V3 J- m
set i. y- ?% T: W  [, @4 s3 o3 z
( i + 1)
. P7 \7 o5 s- n  P
]
$ g) G( W7 p& m) @% d3 y; {let j 31 |2 M9 ]( Y4 @  `4 A0 o( Z
let sum-money 0
7 Y6 U  Z# i7 ~! Dwhile[j < [trade-record-one-len] of myself]  s9 l/ k- U5 g0 \* K
[
; q+ x+ `; y6 r1 W0 ~+ }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)  V- [; y4 M8 P8 |3 r" S6 t3 _5 y, F
set j' }& }7 V1 @$ {( y* G' U+ {" n4 F
( j + 1)

+ V6 ^* s- w+ {5 a]0 b; C0 Z8 ]7 Y' S- b3 j
let k 39 L' K3 g3 m( [1 p* @
let power 02 R) h9 x( m9 v
let local 0
4 [) z, s3 b( i) t/ Q- p1 D4 r, |while [k <[trade-record-one-len] of myself]
; H  k% U* g0 w[
/ N, p- D  [, F, X3 V; J  J) aset 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) / |" {- b, g0 ?2 A! L
set k (k + 1)
( o* i- \  V2 m( |: j/ _8 Y]
1 s$ H' o+ z$ }7 e6 S) Uset [local-reputation] of myself (local)$ H) Y0 U' K0 `: B' K5 W) `5 B# z" N( E
end! L8 G5 W; B* I5 T; S
& O6 \3 z8 F1 u: W
to update-neighbor-total
+ }, I5 {: {$ ?6 N; y) Q/ c6 [4 k7 Y: ^! y, n' T
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]* [$ D' k) `! j! c" D" f
; O# W* V  I4 n+ E: L+ |; t8 j
% |, U; f$ l# [) F3 s; X3 _
end
8 M9 `2 m& T& A4 F; `0 _
, w# d* T3 E1 Q/ V5 E1 \to update-credibility-ijl & W0 K) {9 n) D& a* U$ i, u. z; g

: e0 H1 f- H4 S% A* a" E;;
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。
& e9 V* y  p2 R5 D7 y/ s/ Tlet l 0
/ ~% |9 }! A5 Q& x1 C6 |while[ l < people ]
# N3 A( f5 c/ o% K- P- Q- |;;
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" t7 Q7 |9 h0 n% Q$ O% x$ s) p
[1 b7 p! x8 T" r& g. ^% N
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)3 F, f3 K, r# O) a  N
if (trade-record-one-j-l-len > 3)
% {4 s* a: I+ J$ d( n$ g, A[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
: \# L: h7 v% tlet i 3+ f# I2 u0 m& f
let sum-time 0
6 ?) K! B3 I6 A: F- fwhile[i < trade-record-one-len]- |- m) l0 I! m- n: D
[/ t- G5 i5 `' h9 \$ S
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
' L1 _$ E) d+ g7 n5 [# ?set i( }; j( p& E+ B2 N9 }
( i + 1)

$ F3 @% z, ?% C2 M3 l/ g2 Q& g]% S! X8 Q" O" {0 s/ R
let credibility-i-j-l 0% A$ y' J: W" ]6 ~
;;i
评价(jjl的评价)
$ T$ T: Y. ?' l, O$ u; s% {. r) m5 Elet j 3' G: n7 Y1 }5 x
let k 4
+ a3 O8 N3 c2 }/ Q$ I9 ewhile[j < trade-record-one-len]% d2 l! ]9 o  k; O- f/ b) [) p* z
[
3 c9 t9 {0 C2 Kwhile [((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
; |# k+ _' @. a# dset 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)8 x4 u' @# e1 \  k* c
set j0 U) X1 y( ]! t/ g. W6 v
( j + 1)
" [0 @/ d7 x& ~; O. k& Z3 V4 R
]: m1 a, a. t* l
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 ))' B( Z2 M' i% j) O) A
$ Y/ I4 ~7 e+ G4 V% M; Z, ^: K# N
: _# K/ R8 [  N  R9 X7 p* U
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
& N5 X/ g( Z% w) ^2 q. R  z;;
及时更新il的评价质量的评价7 a, C) O4 j' u1 s
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
0 T8 V5 `+ ^8 e4 N1 m3 ]% Vset l (l + 1)
" m6 J9 l+ P  R; ]]$ h' a0 @% w% T0 I( b7 o& Z! \
end1 Z) h  n  Q0 D% i

- Z8 W% v7 F2 ]3 z/ @6 Oto update-credibility-list; z9 H. w9 U, }
let i 0
7 V8 I- A7 n! q+ Y. g4 hwhile[i < people]
& t: R9 }: |& z( H+ T  S[- o3 N; N& N  |+ M  p
let j 0* T3 ~# H+ k1 i  @8 p" W  ]- g
let note 0
: @( ?! n1 C  N( W6 _6 Zlet k 0
: }2 D3 b1 y9 L3 @;;
计作出过评价的邻居节点的数目
$ S7 q3 F* x. Jwhile[j < people]
+ T6 j1 O1 W5 c[8 P, `, x3 c0 ~5 B$ |
if (item j( [credibility] of turtle (i + 1)) != -1)/ d5 P2 A! T& T& G- z' B3 F# E
;;
判断是否给本turtle的评价质量做出过评价的节点
8 K3 t2 ?- M, o6 ?- s[set note (note + item j ([credibility]of turtle (i + 1)))
6 ]8 U0 ?3 x, j0 W" V* X) [$ h;;*(exp (-(people - 2)))/(people - 2))]
: Y! q& A' E; u/ O, B7 X" Y
set k (k + 1)
1 l9 `; S* H) X" ]9 ]7 r( J]
/ `* G3 K3 e5 I7 a7 q1 L: yset j (j + 1)
$ c/ T0 {0 g, h3 Y" R+ X]
7 M0 ~: _  N6 ~+ v8 b( fset note (note *(exp (- (1 / k)))/ k)! C* g$ n! _# J6 F/ ?+ r6 x# w
set credibility-list (replace-item i credibility-list note)
6 S7 x" `* ~' y) v1 Rset i (i + 1)
, D, j: |" D7 P2 E& l]
, Y/ D5 G# N6 {( a. xend
. t& S' [# K/ b; |* H
/ U1 }& n3 k4 C! [# Fto update-global-reputation-list8 j4 Z1 {, P* p1 Q+ C: K( [
let j 0
5 w. g! S2 x+ H* ]while[j < people]
8 E/ ^+ K, d; I2 e* {( `[
  R$ r6 M% M6 ]: ?: Mlet new 0
8 G+ o8 z7 @: e$ j3 j1 @6 n5 t7 Y;;
暂存新的一个全局声誉% ?3 I( ?( V$ Q
let i 00 a6 Q/ R& V' f$ |1 P
let sum-money 03 u4 |! B4 L, B  f' W- N
let credibility-money 03 y" G5 I. m/ B$ i% N; H" J6 m
while [i < people]" s+ s% C  x( c+ t, t6 T4 j. q
[
0 i( O; Q' [) _( c! F0 s' iset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))0 |" |( `' W/ y9 L0 ~  Z  g
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))' C! J- o. n) ]7 U
set i (i + 1)
  s' a$ ~+ x$ S7 V]
$ {% z1 }5 g+ y( c+ Z* j% u2 dlet k 0
( v/ r. A- x* ?let new1 0
) S, U& {2 c9 e+ pwhile [k < people]' a& d! }$ O  r
[$ n% L) e) e( l4 D0 P! N
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)+ E! c. f# v3 }3 g2 M
set k (k + 1)& ^; Q/ B. |7 n# z
]" |; N  R/ I5 l7 F+ I. L* f
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ' }) f8 \! s  ]: U
set global-reputation-list (replace-item j global-reputation-list new). p  t2 M1 R# N0 O
set j (j + 1)+ ?2 i. D4 g; _
]
% p& M, r2 s* Send0 n2 d) y1 _2 b) o
3 Y* l! K/ e. B: Y2 q" T

; K1 k) [% X, ?: ~! z! P, z3 B5 `( q1 U' o5 p
to get-color
( q0 H3 v) E+ t* f) k1 y, C! n
: [5 ^% C, K- G9 tset color blue
" P  |; z: M2 e$ x5 i* ~
end
$ b+ e. q% n5 x( b1 Y4 z' V  E, S6 y* ~
to poll-class
2 ?7 ^% Q) E9 e% S1 j5 Vend
. L0 Y: |2 f9 S2 N. g" z4 ~# x6 l: s3 B" p' u" u6 C: H  E7 c
to setup-plot1
5 X; R, F/ W4 @" {; ~  A: v" _8 B0 _. D5 ]
set-current-plot "Trends-of-Local-reputation"

- F* I- u2 [$ V; R) |) ]$ d2 }2 Q3 l/ b- r3 k1 X0 W
set-plot-x-range 0 xmax
& M. e, J$ b2 D! m4 X
- U1 z' _( H8 T* P
set-plot-y-range 0.0 ymax

1 l# j  F& K1 t6 H0 Oend, _9 n  y, w8 b0 ~; ~+ U1 h2 Y& x
7 [! i' m+ ^& T) V: ^
to setup-plot2
7 ~7 I6 Z7 ?: T: h4 e' q8 z
* _, A5 s1 z  i, |) y: oset-current-plot "Trends-of-global-reputation"
: Y% L- l$ b2 d4 w! k- e/ ^

# b& b( p' }# @) D9 o. @/ I8 kset-plot-x-range 0 xmax

. h9 l0 O7 n# p1 a# `7 |. r, a
& o3 A6 W; H; h; Y: b" d; eset-plot-y-range 0.0 ymax

" j2 K- e) \" t: X& H. Uend
/ S3 |+ Q3 l8 z2 `# j5 O+ `7 \8 Y/ @, F* @& U
to setup-plot34 j2 Q6 S. B- U3 i6 C6 h! ~% M
( [8 X0 k8 _/ z* w' t1 G: J3 u
set-current-plot "Trends-of-credibility"

% h/ O  B; X7 N# z  B! e4 [+ S  P. ^0 w+ j. j5 @
set-plot-x-range 0 xmax

4 k( }6 O4 x7 y- Y
6 N! ]; F; l% Sset-plot-y-range 0.0 ymax

  u6 \- B2 \+ \7 Mend; a# G( @+ @7 p  X# A
9 z: q9 ?1 M+ p  e% p2 z  f
to do-plots8 R* p1 L/ Y8 |
set-current-plot "Trends-of-Local-reputation"
  J; V/ b( E4 C6 bset-current-plot-pen "Honest service"
" N# H3 U3 A  f6 Q4 z+ ^end
" W6 m/ H. k- O% d' c3 B1 d" W/ ]8 I5 H" 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.- M) x( w; @" q& ^  n# i

0 q' n' {& Z2 a0 y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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