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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:% f3 t: a' w, [3 o4 A. t2 M# P7 p
to do-business
$ f' [) S5 @* N2 z- s6 \, X# S rt random 3602 h+ M2 W$ |0 b9 w
fd 1
9 i; L& `* I2 R0 b$ F ifelse(other turtles-here != nobody)[8 I  ?  i0 g( S7 k% a, ~
   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.
% C) Q9 X9 [- z3 D   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
% {: W7 {6 v9 h/ C1 c5 a. H   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
) }8 T9 z1 v! L   set [trade-record-one-len] of self length [trade-record-one] of self% a  G' H1 s) N6 ?
   set trade-record-current( list (timer) (random money-upper-limit))
& @  J, Q# O! `! l: R& ^4 s9 H/ y- M# C& t* K
问题的提示如下:
3 t+ x4 g+ s  J% n' N* W( V8 g$ W& y, `: j
error while turtle 50 running OF in procedure DO-BUSINESS# [2 J8 S2 M4 P& z" _. c
  called by procedure GO4 ]9 k% _9 ]: h" |& f/ h; y+ k
OF expected input to be a turtle agentset or turtle but got NOBODY instead.+ k  P/ |: p, n2 `* b9 h2 E- M8 |  U; F# \
(halted running of go)& B$ n' M3 K  {* p3 r

2 |$ b  j. ]  [( a; H1 [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~~$ }6 u$ i2 D$ Y
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
6 v2 l' a3 O6 V, j5 Fglobals[7 k% @" S; g2 f6 j7 l/ K2 s
xmax
; _2 z" X& H7 y& n- _ymax
% q; C8 Z, j' \0 I4 `: hglobal-reputation-list$ o, Z2 A- |; }9 r/ c
% {! S2 V! L1 G! ~, F5 r
;;
每一个turtle的全局声誉都存在此LIST! I! n% w4 e8 l7 m3 v& U
credibility-list! _4 ?- I/ }0 d
;;
每一个turtle的评价可信度  T- Q) X1 f) ^- g
honest-service
4 K, l" q& E6 O3 @/ k- A7 Wunhonest-service
* `$ O+ L! c! F" H( c1 k  hoscillation
0 `" J; y# u! P% J' q) @! [rand-dynamic2 k7 H" Q" T% Z
]
  E$ ~; x. T0 f/ B1 V
  q/ Q; y6 R; B+ `7 rturtles-own[0 ~$ q6 H7 _* d- H$ g, |7 `
trade-record-all0 ?5 a: R$ {7 X# i# x9 b
;;a list of lists,
trade-record-one组成
3 G( j# R9 r5 Otrade-record-one
4 l  Y+ ~! ^6 x) P. k  N;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录. @% j' ^. f. D* C+ n0 q4 S- j( r/ i

( ~! F- w5 F9 D( J; o3 h# M; `;;[
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]]7 P$ w1 \' d& o& V
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]
/ c! l- |' x+ C- V7 `# _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; `  v9 c( u( ]: S% G9 Y4 m6 h
neighbor-total* }+ [4 k/ M# p( C3 s% j! \
;;
记录该turtle的邻居节点的数目
0 B/ Y7 h* ^  D/ Q0 ^4 |trade-time( B4 x/ Z7 T8 ?( S; X
;;
当前发生交易的turtle的交易时间: {5 {9 b" K! ~* D2 l+ r2 g2 n' w
appraise-give
! V; U4 Q2 x6 N) [;;
当前发生交易时给出的评价$ i8 U7 |4 f! }; p
appraise-receive
+ y# O5 v, o" n: \; N8 @5 N;;
当前发生交易时收到的评价
- X) D  }1 X& L$ ]# ]$ ?appraise-time
' c4 l* T: S& u* s% `5 n;;
当前发生交易时的评价时间7 l% u  E/ x. ^* F9 J+ h
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
* D# c% N4 e9 N& u* l5 Ztrade-times-total) M% h  H# d6 o0 I' O) N6 |
;;
与当前turtle的交易总次数+ e9 a3 {; l! H3 Y. m* j- G
trade-money-total% X' p$ U$ y9 q4 Q
;;
与当前turtle的交易总金额
3 w* D- `3 I( I  H$ {0 Glocal-reputation" o4 P, s7 T# c7 W9 |
global-reputation6 T7 s! u- n) \
credibility
" `: v) L( r; j. e' f- S% p! H;;
评价可信度,每次交易后都需要更新
2 s: L. S2 q- ncredibility-all
5 y' j; ~- X  _, 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
& H( ~1 U# M- F. w) ~/ H1 m) Z5 Q/ x" T7 E6 a
;;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
9 v! X9 W& P+ |( `+ Ycredibility-one
# p# C8 z9 e. C3 U5 g( F0 u) f;;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people5 n4 l3 V1 `# t. f' l" }
global-proportion8 H4 m+ Q9 `% V: w4 T. I
customer
8 D0 k+ O% t! j" C% P" icustomer-no
+ l7 a7 e- u+ U7 utrust-ok
- v9 D! M: Y' Gtrade-record-one-len;;trade-record-one的长度( `6 S+ h: N' }) R- u% o; m1 \
]4 T. L+ F  d8 p" v8 q) w- a
) \8 H7 V2 S  M  Z5 K2 D, n5 T
;;setup procedure
! }# |: W/ ?* L/ @& O
6 r( @' w+ `! O" i2 Zto setup3 U) j0 o  q3 o+ q1 g

7 i- h$ S, I; a8 i5 [; u9 uca
, v: w7 l: G7 U& L+ ^6 R5 z  e4 d/ a

1 F8 K4 k& |0 Q- t3 h3 Vinitialize-settings
  w5 N& t6 j" d# S) ~0 Y. I

" C. W+ l( o0 |- ecrt people [setup-turtles]
: Q5 P3 ~7 R5 x" n- Y: K" a% I
. N; L$ @9 V2 h" P( c9 o! d
reset-timer

0 ?5 q7 G4 a6 p6 `+ r0 l: U* t& w
# A3 \- u9 e4 b# v/ {, d7 Mpoll-class

2 I" b2 U) h. r* L. h3 D  F& N  V' P' N& t# [
setup-plots
0 }+ m( P7 i: b: [

# j+ B8 }* D) Vdo-plots
7 x$ O: K/ F% N% ~/ H: i
end0 @1 w# a7 G* t# f3 J* E* |

& p4 g. ~+ H  hto initialize-settings
) x* E( C/ b2 @, l: j0 p* U8 f) a) w: o4 f) n/ a6 a0 d! `! o/ l
set global-reputation-list []

. i, v5 W7 A: p0 h# S1 V! n! X6 R) u8 q
set credibility-list n-values people [0.5]
6 O0 f% s, O( V1 t! f  F6 B

: }" ]  @% ~% I/ K# k* p3 |set honest-service 0

; @. {) o$ z$ ]0 m; c7 }
7 F6 m4 v- F4 L# a: mset unhonest-service 0

" O- u! u! g6 r' U5 V( Y  K* ~, Y, l# n
set oscillation 0
6 G) l* H! r& \& K. ]
$ {. \' B: j& m5 V4 `* u4 z3 p
set rand-dynamic 0
- \* P" m* A% g0 f# e  f
end% P1 q: c2 p( K- A
; D5 _( N% _; E, p. V2 R* E
to setup-turtles ; E  G# R8 R. F
set shape "person"
: q0 d# z6 ^& f' ^1 Vsetxy random-xcor random-ycor
1 N9 I9 n- f  @- Z1 d5 iset trade-record-one []- W8 X7 p9 W+ k2 X4 u% {/ a
( O( k6 V7 p. A
set trade-record-all n-values people [(list (? + 1) 0 0)]
8 ~) P6 f# A$ }; g; `

$ a) I; Z; e$ R# Q' sset trade-record-current []9 e4 Q7 M; F; @% g; P3 s4 g- k. |
set credibility-receive []
) _8 K5 P$ f6 W( |6 [) [; ]  dset local-reputation 0.5! [4 ~3 v9 f; B3 l, [# B
set neighbor-total 0
5 y2 c) c( Y6 v4 \% Yset trade-times-total 00 d; ~* F: c% o/ |6 ?
set trade-money-total 0$ H* S& A9 g6 k  T# A; a6 q7 z2 @8 U4 |& P
set customer nobody/ y# q. B$ k: \
set credibility-all n-values people [creat-credibility]. ]$ @* d: h, O8 g1 A2 h- F4 }9 I
set credibility n-values people [-1]% A* Z' _; E( {
get-color
/ C! O, r# {' Z) n% \4 w5 Q
9 i# H0 e- c) |$ w9 t: ?! G
end
" D' I* o+ R; T, E
' j' K: n0 T+ r) N% V( k( eto-report creat-credibility& s* B# k( _4 [3 X
report n-values people [0.5]* H2 c1 C9 i+ V" a# B& T
end
2 v4 Z1 l; F7 x9 O/ ?
2 B: R/ G7 t8 i$ F* z, ~2 Tto setup-plots! I0 @0 p# P. @' b' F

6 H+ c" {; o. Q1 Xset xmax 30

* x  C; E: R  v8 U8 x" k  p2 ^  i! F, {4 H& e" q* e- @
set ymax 1.0

; M8 A2 _, Y, U9 e% S' _, q8 H# t4 I
" I. I9 w3 ~9 cclear-all-plots

2 r5 [' g- Y/ Z$ i) ]: z. a# h
& i( B2 T" T( |setup-plot1
( m. F7 Z; z. ^+ X7 {

) ~& u6 a" W$ tsetup-plot2

/ b( j5 j9 G9 K  V* P* V# m0 r
  j" x* X( M+ N# t" L  `6 bsetup-plot3
' g) K5 p, J' P' b8 ^
end1 P0 q, n! `1 l' g4 s

# s5 s  T  P* B( t# c; t+ C) N;;run time procedures
7 D, v3 f( u( T% D/ f
% [) E; I7 d$ k, j0 n" \* q; Wto go
* h4 _4 V3 a& O7 c* T2 E6 T% s+ w8 x
ask turtles [do-business]
& ]/ u" p' \; Q. E& W
end
, t& m3 I# ~, j1 w) O
& E+ j9 \/ V, Z7 `) t8 sto do-business
4 A0 \# l% {! _5 Q- L; r

) t( I, y3 N! r# |3 A' V  E0 f# ~
/ W9 L: x7 a7 `6 J4 \1 r  Hrt random 360

8 Q! h4 L- j/ A  ?$ p
; h7 n2 i  k/ Y7 g& P) r- Jfd 1

7 Z  @+ V. A, t3 E0 ?
/ c9 Q# }/ S, w6 Xifelse(other turtles-here != nobody)[
1 z) ?% v$ e( Q: v

3 P; G$ E; y2 b$ t0 yset customer one-of other turtles-here

* Q% K" ]2 F, L( {' w+ {6 l+ F  f+ r+ x- C. Q
;; set [customer] of customer myself
. b) o! W# S* v' j5 o& A) v7 T

& @( T1 q" V* G& _% P+ t7 E# {set [trade-record-one] of self item (([who] of customer) - 1). v7 j/ {1 d2 q
[trade-record-all]of self4 z/ F6 B0 h6 D4 {1 B+ q) w
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
6 t" ]7 J8 ]" U! ?0 X; e% Q4 }
  G9 n4 S# u+ j8 E, ^( e
set [trade-record-one] of customer item (([who] of self) - 1); W* a0 B7 O& g2 Z; w+ t2 w
[trade-record-all]of customer
% L" ]% X% ?' M- c5 Q
  ]$ y. c( ~4 s- W
set [trade-record-one-len] of self length [trade-record-one] of self

; F( v3 X" f  y& F7 p2 m# G  b
- d3 U9 |8 R# d( M7 |! mset trade-record-current( list (timer) (random money-upper-limit))

! V8 \" A: u  D4 |' K3 M4 f. m; I/ a8 t5 K$ V
ask self [do-trust]+ \8 g5 i; C' r) P/ E' x
;;
先求ij的信任度/ Y1 ~" `! {4 [$ v: c' V: Q
! z4 O( K5 Y# ~4 i8 |
if ([trust-ok] of self)
9 H3 U( W0 j! ^;;
根据ij的信任度来决定是否与j进行交易[
2 x( Q  }. }. rask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
$ D: u! f+ o, n, V& E% W, A$ |
[

: _2 L/ ?4 `3 @# {: v# h8 g' R; L# A: s- Q3 E4 v
do-trade
, D5 ]) |. j# i1 _. C
7 b, N: q" ?$ h! K) x
update-credibility-ijl

- T" f0 u8 I) f' P5 y( R$ c/ u) i
& R5 V/ w' h6 [- {+ c. |update-credibility-list
7 I1 f% O0 u9 |4 Z

: H. K6 X( b$ K* d- L; \8 S9 J. F5 L: {% K/ |
update-global-reputation-list

' h* N; _) i$ a# o* |2 S2 i
9 B* s+ w* V, q" r3 Ipoll-class

$ }8 l8 D+ j% V
& P% B3 C& L: u* R0 J0 ?4 J1 Pget-color
/ f$ ^0 X, B) ^4 y, o) I0 C

) }; }8 h1 g4 S( |8 i]]
& ]7 @( k2 R1 C0 A. M# v0 u. ^
;;
如果所得的信任度满足条件,则进行交易2 T7 r  [$ f/ S
1 U! {+ a/ ^! p9 z- K1 C3 i' e
[

/ J; a" s* ~) }+ K7 d9 H8 f" M9 r6 d
1 q4 s, y+ _+ U/ D6 T( b! ]7 Trt random 360
/ f6 `# @, _2 i5 L, T, g; k
3 r* C8 y5 r6 j, T; [; N
fd 1
1 I' Q3 X# v  a$ y7 X( {! W! K( k

  e" Y" m; M8 X/ \) L+ _6 z: }' S) y% `]
1 x5 S3 N) Z3 V/ Z3 M4 y6 }
- g; a2 C3 G6 O5 p( z8 G5 n/ K
end
8 Z+ T1 b& [$ J; A1 \3 c4 p; `. B
4 H1 K4 k8 M, f7 }% g& i
to do-trust . Z- ?* ?$ j1 _2 C7 V! O8 q" J
set trust-ok False
0 `( t" L5 D$ Q
# V4 V$ U- X  }# M

: `3 l( m( s) A$ J! O4 V# h1 Alet max-trade-times 0/ V) h* v4 N" X1 |8 D' ~3 ]
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]( r- E2 \. R9 M$ e( x
let max-trade-money 0
: u% a9 \# Z5 Eforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]  L" X4 o& p0 v& S& d" r4 {
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
' Q9 p2 y2 P! [/ v& c1 M' U% f" @

) d- @8 f% q; r; f. c. }+ Aget-global-proportion! B& G* K' `1 a* I9 d
let trust-value
0 u% T3 c! f# }+ r" O% h) L9 Slocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
' E+ r- l- b: Q. S, x2 M
if(trust-value > trade-trust-value)
+ b7 t5 h7 _/ D7 x- h) u[set trust-ok true]$ h9 A# Z! f+ ?' ?
end
+ t/ l. W( n7 M2 ^. c7 c, Y( w( V& _2 x
to get-global-proportion
4 F- R; D- U3 O1 z5 `( Iifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
$ m! M) {2 g( s% t' E4 B9 ~[set global-proportion 0]2 S  ]/ Y) }# I. q: K/ ^6 g; x
[let i 0
! A! U3 d$ N6 e4 `( g7 ylet sum-money 0
2 \1 `& P" U% S  ~9 bwhile[ i < people]5 B: e* t+ L+ t9 Y! |4 a
[
% j' `) Q- ~; w0 H2 s* vif( length (item i
/ K: t# q1 f3 m1 J* w" S[trade-record-all] of customer) > 3 )
1 [3 J* u( l4 X6 [. R
[# {" c' T7 Q/ C4 ?9 V6 A2 i! o
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))8 d" n. f5 E2 n) e( l
]- \( h0 F, U9 B
]
, V9 G2 r6 G$ D  }- Zlet j 0
# l1 {2 @5 b- \let note 0/ h' r; C  J! O" x/ n
while[ j < people]
, m, j* y' @; j- i! s[7 C1 h  ]$ L: K4 D; {+ Z
if( length (item i
4 Q1 X0 Q* i) n2 q" G. S0 y, e. z[trade-record-all] of customer) > 3 )
+ M# L, w4 h8 l! t, O
[
5 N5 p* N; b) {& _# x( i6 yifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
6 \  ]$ m# x" u/ F$ U( k. l[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
% c9 h& _: `& Q[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]  [) W3 C% L* R' O: \% F, a
]
+ ~7 [; F" M' m% z3 `- ~8 z; t]8 C* o4 A+ X( }, S! L% R
set global-proportion note# `" v0 U/ F, O- m! I# a
]
; T4 o: _- J8 Z  c- wend8 t1 B0 y% w! Z6 V0 _1 u' c

% [% x1 v: t# E! j' zto do-trade9 o4 L0 O1 n$ a% z. F9 G4 \
;;
这个过程实际上是给双方作出评价的过程
* T! ?8 ~6 z7 p! ]- _: h) D% j* Mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
, }5 V: @2 p0 Q+ I& _: M' Qset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
% c8 O+ p; h3 D! V' v1 p9 uset trade-record-current lput(timer) trade-record-current
- S. J& j( C- ]! w7 j% s/ X;;
评价时间' V; ^4 ~0 _+ O6 `; }% k
ask myself [5 S! e( f' ~( S4 N9 q/ P5 P. ]  G# S2 W
update-local-reputation: r& `; T( X4 P
set trade-record-current lput([local-reputation] of myself) trade-record-current
8 @% D- {1 L1 v6 T) a/ M2 J]9 y! M1 U2 x9 z
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
6 R) y' @4 v' U! A0 W;;
将此次交易的记录加入到trade-record-one+ S+ j( i1 A4 }6 {) F
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)9 [# T9 n4 c' A! _6 A
let note (item 2 trade-record-current )
  ^4 D2 W# V& m2 L" V9 [) `* e2 mset trade-record-current
0 \- P5 K! S/ v& A+ i0 E6 j(replace-item 2 trade-record-current (item 3 trade-record-current))
7 |2 Y! x% U0 U6 n4 `
set trade-record-current
2 \. r6 e, L! |4 h, I(replace-item 3 trade-record-current note); q8 f/ J+ q  l* Z( g1 ^

, A  a/ [& |( n' m
8 o  [! C; |8 \  D) v& q* f2 h
ask customer [4 Q4 s* D( }0 c7 z
update-local-reputation9 d2 o9 \' i; A7 j4 e) }
set trade-record-current
: U/ ?5 g% V3 A1 }- e3 v' y  y(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
8 W: u7 [" t# w
]
7 r- O: N3 ~3 o. I# g# B' a1 B1 z4 L
0 y% V4 j8 a) ]9 E# |5 n

' T! L/ P$ o6 v+ D% Z, Uset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
* x" T. i3 O" D
2 s% y, l3 m9 Q$ x# E" [+ t
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
6 Z0 _- Z4 S7 @) r% r) ^% C;;
将此次交易的记录加入到customertrade-record-all* w+ n1 X( ]0 y5 @, e# P+ L
end/ w0 x" M5 O- m

% w: _* M  \9 P: M! r8 s4 y+ Tto update-local-reputation$ p+ P8 y8 [' v8 c$ r
set [trade-record-one-len] of myself length [trade-record-one] of myself3 t0 {# K3 q* M% m. s6 q3 F6 `- ?2 W
$ _' l1 H5 q  P

1 u! Y/ a: H" g7 X; z;;if [trade-record-one-len] of myself > 3

2 C+ s0 B- V- t1 [; kupdate-neighbor-total/ m, k; D! R) x. H% p* |
;;
更新邻居节点的数目,在此进行
9 ]: u$ p2 |$ nlet i 31 h5 ^8 ^- H) V
let sum-time 0+ e( m+ X+ |; w4 Y) @- ]
while[i < [trade-record-one-len] of myself]
- e$ p) f" d* d( b! H[
4 X* e3 @8 e5 @6 ]. y6 Bset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )2 L5 x& H1 s3 Q. h9 D5 `
set i
0 f, o/ h* z5 A2 [* ^: J% W) ]% _( i + 1)

/ K; n2 U& \2 b]
% w3 A: N7 a6 L' U1 Klet j 37 Y$ ?8 t/ p* G: g- h. l0 O& h0 J5 j
let sum-money 0
) C9 W8 p( z( k# I) |" C. mwhile[j < [trade-record-one-len] of myself]9 N2 G6 W6 _/ y! c9 M. X8 ~2 G" ^6 R
[4 x$ G1 y8 [' a( f
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)
. p/ }% w5 R- Iset j
, E& g* v- o9 _9 `" B' I! N( j + 1)

, {' Q2 w0 M# d2 ~4 |( ~# p]. J7 L: j9 F5 E. h
let k 3
- L7 m5 ~7 E! `& p6 @let power 0# c2 E* [8 ?3 z' A2 F
let local 0
3 y3 i) `& p; ~while [k <[trade-record-one-len] of myself]
; A2 R0 M' H- E9 ?; F. m[$ E3 R1 ?2 R# D% X( z& R. n
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)
8 ]! A- _* [) r8 J, Eset k (k + 1)- [/ r$ v/ w' S. B: ~8 s  @4 t! z% H
]- [  x5 h6 P' b3 H4 `: b7 A7 h
set [local-reputation] of myself (local)$ c) e; ?  i! k' j; [! t% H
end
5 i' `, }9 o3 j  b6 W* S7 }) F; K$ ~6 h2 M/ f6 q* ~, H
to update-neighbor-total
% q; s1 S2 Z; c3 Y/ ?2 j6 U5 ^/ n. F% q
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
2 }( _/ `8 M& t! C! P4 {! r& _3 m& c# \. y1 h7 y) G
9 r9 y: m4 G0 i2 X' H/ d
end' k. M6 f! J5 h' Z) Z# \

- p; U9 r# Z+ d4 H8 I; xto update-credibility-ijl ( M' P; e7 R, v' R) d  M  Q' p

1 [8 O: d+ {- b+ [) d. I( R;;
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。/ Q$ v3 F6 b0 L4 K5 L8 }
let l 0
/ t% {* q/ k6 {6 m9 \while[ l < people ]/ d2 x) Q+ H- S' [$ L  `
;;
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
. s" }5 L9 ^$ j1 q0 I) A[8 ~4 |9 Q- h) L; C
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
$ Y+ ?+ r) k/ \if (trade-record-one-j-l-len > 3)
* w0 n6 m* c9 q! T4 h$ d" X[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
# }9 y9 C% |# N) y- ]+ Hlet i 3+ G& J' b9 }% e$ |  D/ L" N
let sum-time 0/ B% T' A+ k0 w, Y; G/ c! S% Y
while[i < trade-record-one-len]
/ y/ a2 r$ A" c5 c[0 Y5 _; b- Y$ Q
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% G5 ?- p6 f$ i+ P  h: P4 P% aset i
7 O" g! O3 a* S( i + 1)
1 {! Q4 Y, P7 O" g: n6 B) o2 L
]* a  [  k$ r- \' u- c% T1 {# D2 H- R
let credibility-i-j-l 0
/ Y! p' S1 G8 y' U* J;;i
评价(jjl的评价)
" x  ^+ T* u* t$ i: h2 @2 Plet j 3
1 [9 c8 M+ B0 w5 d9 p/ U- l& ~# llet k 4
: t' C% M8 n& n) V% K% D. I: f  Dwhile[j < trade-record-one-len]5 H$ ]; Q+ ^6 H% z
[! O* Y' g& \9 |+ `
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 l. w! W6 B& H6 A1 e
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)
2 i  X. F5 Y! y7 ~* G  L4 Mset j
2 F4 {- S+ N  n8 I! Z8 n( j + 1)

" h$ U: N9 r3 s: w]% v  B( Z/ A& A: q
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 ))$ d( Z) Y0 G- h" x2 m' s
6 k: n# }' j% _! r  w; x2 R
# f: S9 I( a" P& q; ^+ m3 c
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))7 f6 b9 v6 Q0 e- `' i" ~
;;
及时更新il的评价质量的评价) n! U6 [& H: j4 i# Z) n. h
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]' j/ F2 Y$ N4 W2 {) E5 S7 }
set l (l + 1)" _0 I1 a1 [* r  ]$ A
]9 z8 ?  s7 I8 y) z
end( J) n; M8 ^& G
7 c; J/ I2 ]( I6 H3 t
to update-credibility-list
1 l; S+ _5 q, A& w! H+ B3 \let i 0: g' w0 ]$ a3 l
while[i < people]
' e/ |( m2 G  h[
: o7 x, e9 \: B/ x9 \" w# I; ?let j 0
4 {% M: S8 u# n) l, wlet note 0
" d0 s. ^  d5 Q$ nlet k 0
0 c+ s9 D8 t8 w& F$ b4 L;;
计作出过评价的邻居节点的数目
, a7 O% l% Y" ]7 e0 C- _) owhile[j < people]) x: d0 U! Z$ W3 ]" _% a# o
[
# Y' y: y7 a$ j5 `1 jif (item j( [credibility] of turtle (i + 1)) != -1)7 S$ e% u: n. f. T: s  p
;;
判断是否给本turtle的评价质量做出过评价的节点
; v1 ~5 V) f( S. L$ g! F+ K[set note (note + item j ([credibility]of turtle (i + 1)))! K/ G* e+ F) h  H$ t
;;*(exp (-(people - 2)))/(people - 2))]
) q! d% n" u; p+ v" H0 u
set k (k + 1)
5 x. a0 h$ h& i) p  h: j4 @+ k  ~+ \: j5 e]3 P% S* g5 G3 Y! y8 l
set j (j + 1)9 a' S2 L2 M# G1 W( ]
]9 Q/ Y8 i% Y4 x8 Q
set note (note *(exp (- (1 / k)))/ k)& l$ q6 Z. p- J
set credibility-list (replace-item i credibility-list note)
- i7 Y# Z( K% X8 i$ Iset i (i + 1)8 E. ^. ~) O$ I' J0 @( s- y9 R. j0 F5 Q
]; k: L& H/ S- _$ W
end0 x  `" B, g$ |( {3 t3 b" B! t2 T

' @3 ~  p' K; [to update-global-reputation-list: c2 g& @( A1 h
let j 0) m3 R0 m0 w* p# z4 F
while[j < people]
7 A) I. I0 a# H! Q% H. o" J/ B[( r3 Z9 m8 P3 Y/ B- D
let new 0' |2 ?; N6 v4 W+ q
;;
暂存新的一个全局声誉
' ~0 ~6 H# \" Y2 z  W$ f7 Wlet i 0( ]* R  k# i! N. |. p# [) }/ [
let sum-money 0
9 @! A% G7 V1 o* I5 y: Flet credibility-money 0. c/ Y- Y3 R  ^/ b  a. p0 o
while [i < people]
% Y6 T2 w: ?' }[
) q5 X! {0 o6 T; @set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))6 L: E0 I7 D) P4 N4 A) d
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 Y, c1 l8 L% k1 `2 P! v; _set i (i + 1)
9 T6 A/ [3 D$ k' i. `' G& Q( @. y]
( \0 _) J) `, O$ b. Clet k 0& a7 q! ~" q& u' A- Q; A
let new1 0
6 e  R# `' Y2 w, C$ |! Owhile [k < people]- \* A7 q- l! ?: e5 f! T
[  V- c4 E! ]! }: [& I
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)
; w9 ^# F; A- J; V* F- J3 [set k (k + 1)
: i( p. c! Q) g! n: |- d]0 h* z8 k9 M% f6 e# {1 m8 w( z
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 2 E9 @- W+ A( E/ I
set global-reputation-list (replace-item j global-reputation-list new)
: i3 T+ y; p1 iset j (j + 1). L4 h% A  {* j" Y% H
]6 D( r- }' U3 p" N% w
end
5 g1 C& k  C2 U8 o
' p9 |' O1 R5 L, z+ b7 Y4 N: J; O, y; Q4 U

# S! y1 b2 e- Tto get-color" L; P+ _& h; l$ ?$ W- |& G
, I. V/ ?- w7 k! _1 U* o
set color blue
1 |& U& W$ V, s$ L- O% Z/ v: y2 Y% @
end
0 q! w3 Z: E9 j; s
% ?/ [+ ^9 s+ l  [8 A( Nto poll-class
% \: O% @3 X4 k8 p: ~$ G0 @end
2 P; ?6 y0 i7 o6 k4 I3 X
7 s' h) |0 L, F7 a' Y$ M! `to setup-plot1
# r/ h+ u: |* v# a. y" J* I, f: X0 f7 }
set-current-plot "Trends-of-Local-reputation"

% Z$ n' i0 m( N
2 H3 T( t. [4 U! Q1 k' A- T% ^set-plot-x-range 0 xmax

: o( J+ E1 [+ t! H& n- g) }; A8 T  N0 M' I4 q3 s
set-plot-y-range 0.0 ymax

) q7 l( Z3 w9 q: U* P+ Rend
0 Q4 _+ M, G" k7 @' t3 P+ I( \* i3 ~) X( H8 Y. ?/ l- E  F) ?0 V
to setup-plot26 E; p- |* a5 K( ]7 O; R
1 k# Z! }( [" z
set-current-plot "Trends-of-global-reputation"

" K9 G* s+ {& U; N$ S3 u. l( w5 |6 N( n2 |: y+ Q
set-plot-x-range 0 xmax
% i, O  ^, d5 d! p" G
: ?2 _! \0 ?: u1 L7 H
set-plot-y-range 0.0 ymax

  ]! g1 l7 N( f" B2 p% h/ Y1 n" Tend
5 i3 Z2 s7 C# F& ]3 X3 g: h4 Y8 c; @9 v
to setup-plot3" Q" K  d0 t! K% C- z3 _0 x

. C% F0 n* C! G7 P" F6 v3 @( Nset-current-plot "Trends-of-credibility"

( j- U3 r+ t, E' Q1 {
0 _  R& Q( J6 T% O9 B. Rset-plot-x-range 0 xmax

) ^4 m7 B5 p5 z, e+ Y0 g9 e3 K! D# L. r+ p) ~: H
set-plot-y-range 0.0 ymax
1 A3 t2 d' ?& Z
end' c$ _9 Z0 Z0 w0 ~' G& h# S
* }6 H) D! D2 p. B" [6 g
to do-plots
) x$ `* O0 n: O, P9 u0 k+ Wset-current-plot "Trends-of-Local-reputation"
# S% n, |0 X1 e# r) t$ v8 Uset-current-plot-pen "Honest service"& b2 @, x! H% t0 D9 {. D, _
end1 L/ d! o4 T% d
1 ?; `  y& J5 g6 I+ c
[ 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.' q. D$ Y$ d) W1 H2 D/ a
# E$ S. Y. ~0 \0 R& e. Z7 F
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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