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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:
( ?* b4 F; _5 `& ~9 Ito do-business ' B* f; j: i* ?) i
rt random 360
. C) M- N5 ?7 `  l2 Z; d5 Z fd 17 V( |& Z% z# ?9 ]& r. a  [
ifelse(other turtles-here != nobody)[
) d6 Q+ X2 y# p7 }   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.
; p/ b; F2 V+ x* J3 T/ N, V   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
* Y/ t- |! p% ~+ j* R   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer; v0 x* a7 b$ G1 ]8 S$ q
   set [trade-record-one-len] of self length [trade-record-one] of self/ c+ D6 q# T4 P; F1 o3 m5 i0 o& \! X
   set trade-record-current( list (timer) (random money-upper-limit))
, h* q0 m: w3 Y9 `! s- z5 v+ t$ @, m# U: G7 {
问题的提示如下:
2 o% g+ X* c; ]7 Q% z- {
$ i5 d* A' z2 X/ ~% aerror while turtle 50 running OF in procedure DO-BUSINESS
" g& @: q/ j/ b  A  called by procedure GO4 X" E+ M6 V5 N% Q- j5 H
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
6 u4 h- f/ B6 y. ?7 H
(halted running of go)
4 y* e: t4 k* r
' L( B+ \5 w: J# m$ I3 ?& [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~~
/ s5 Q. L/ M3 A$ A1 k+ \4 L- V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2 \1 z. \* H: Y
globals[$ X$ `+ S/ V% {
xmax
/ l3 S9 h9 @* @' g) u, `( jymax! \; u$ [& k& B" z. B
global-reputation-list
3 n" W, C* a6 A* O1 t1 Z: V# j6 P& o) {6 @
;;
每一个turtle的全局声誉都存在此LIST4 r! Y' h9 q3 O
credibility-list
8 _' D) x7 O0 [% s;;
每一个turtle的评价可信度2 x% Z# t; Q9 u& ~8 q8 _  U
honest-service0 b7 ?/ p) M9 w& N- c3 |0 W
unhonest-service
  z8 a/ o( H1 I4 f. Voscillation
! S  F1 |4 S0 J. x; \7 a9 m& krand-dynamic
3 L2 \+ q2 ^/ e$ I9 M+ P]8 p2 g" \3 }5 ^% l) C: s# ?5 B
* ~6 e% W: N4 P) I' T! N1 L1 w+ \
turtles-own[
7 s  r0 `; t1 q# xtrade-record-all) h2 t  w. C4 x% G; z2 X
;;a list of lists,
trade-record-one组成# e' T7 m. S; O( t% i9 C# t
trade-record-one/ b: E( f7 ~4 D6 J: {! h
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& a5 `0 A* v1 T5 G% [: v8 M+ D: O4 g' u8 w
;;[
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]]) A/ ^5 u# u0 x: F
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]$ o( Z1 j  D' Z7 _/ [, v6 V! z
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( f% ^+ d, [* i' x; d, l7 D: Y
neighbor-total
& h, ^& K2 q) l/ b& l$ G;;
记录该turtle的邻居节点的数目5 D+ U2 ]5 C$ |, X
trade-time
$ z# U( O9 m0 B6 b( U! f;;
当前发生交易的turtle的交易时间7 @, ?/ W4 ?- u- M& J% R# z
appraise-give
) i5 }. }1 P' C8 n. Y6 j. G;;
当前发生交易时给出的评价* d8 A* j  d- [3 T9 e
appraise-receive
2 s  C1 f, f& I* l( e( q;;
当前发生交易时收到的评价
0 q1 z4 G# {& Z. ]8 {& Rappraise-time; f/ O5 |* y, T/ W: e  f8 y
;;
当前发生交易时的评价时间& P  U# V0 n) Z8 b/ U
local-reputation-now;;此次交易后相对于对方turtle的局部声誉3 C' e* b( d. K/ l$ V- `( ~* x& m
trade-times-total
2 g9 A. [. j7 z- J;;
与当前turtle的交易总次数+ K! i/ ]9 S1 [* z
trade-money-total
* D9 I" V! n) ?/ K/ r;;
与当前turtle的交易总金额
8 R- I5 d8 O8 C) Q$ o# `0 G3 flocal-reputation. d- S% B3 d3 ], g" N
global-reputation
" O  ?! b6 w0 I, N# ]" Qcredibility
  S4 L, R. R7 T  `+ d;;
评价可信度,每次交易后都需要更新% P# {0 F* m$ ?3 _) o
credibility-all2 a( K( V" I: Q' t
;;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2 C: R+ S' v0 P" Y
0 Q/ O! @8 W. t/ l$ J
;;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0.50 y  m( U* E, ^" e
credibility-one
; k% h) w- @/ ]2 D+ P0 a. h, R4 m& W9 C;;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* D8 n) b% E% ]0 _5 t! R( Z
global-proportion; Y8 s7 @0 G5 p& g( X! Y) O
customer' ?1 q' P) S! `! ~6 E
customer-no
/ J% L# n4 S- V/ m  F  b4 q8 R' Ftrust-ok# c2 a7 Y1 j) s1 ?2 [
trade-record-one-len;;trade-record-one的长度0 Q/ W: {7 Q6 ]3 N, ?7 C- }
]
% [. c* A* w1 h1 U3 g* ]2 I( F
;;setup procedure$ g4 `+ o) \. B" D* k, x+ \

, G) e) Y, A4 Z  t+ q) P! Y- Xto setup
% o: b- o9 e; r. T4 {0 s& Q/ L
& R' e) K# K+ g  Oca
) g6 L5 i( i  m# A9 f$ b
' |4 m' d% b( I& D3 r/ W( C
initialize-settings
; G# U: b2 n. a3 w3 G0 l: y
# P8 v" b7 W; p& ~. K4 h# x0 S" r% \
crt people [setup-turtles]
8 y1 N5 W$ ]1 D2 G3 S3 B5 h; ]
9 `% O' x7 e4 u: U, |( m# k
reset-timer
- A5 Y8 k* [& {0 _

# R* x# j0 u, E, I0 \poll-class
# X" d9 G0 {+ u7 r& N. f  A% r* `

2 _6 t& \* ]8 x+ C; d8 H/ esetup-plots
# X( d3 r( W/ e, Y5 y; F

- \9 J9 J/ Y+ g! s2 Udo-plots
$ l/ Q. M' f# y5 E
end9 k, R$ ~, b1 C( m; w) i; ^
! w5 ?. w. E8 ^8 I
to initialize-settings7 u% S4 L9 }( e% v1 G6 _

  T) f- i1 B0 q  ^5 a( I* B; Wset global-reputation-list []

/ a" w" r( X7 R* S
$ A& g2 F# {1 L- Y% a  Z2 sset credibility-list n-values people [0.5]
1 x' M/ P" q! b! _/ q5 E0 p2 S3 W
% o/ ~+ D* K) m! O: E7 E& l6 ~1 ?
set honest-service 0
0 I" g: O# L: t. }  H9 m

) Y4 l* W7 G& C& B; r. T1 z6 _set unhonest-service 0

6 T3 j8 q  U! k
! P+ V5 U0 p  A0 {) F6 Kset oscillation 0
# Q+ X; e, p9 s8 |( L6 Y( k( E

# G8 N( B8 \$ A$ p4 X; I% eset rand-dynamic 0
7 m" D; ~6 M/ t
end& y  @7 D9 o2 B/ k

9 m5 \  \* `5 @% v2 Y/ ]; {( sto setup-turtles . v8 h: l9 j/ m% j2 A; }0 D
set shape "person"
# v0 q. r6 w" g+ t. ysetxy random-xcor random-ycor
! f9 d# ]8 }* m& \* Q; [set trade-record-one []$ q1 z4 K3 \! k3 ^+ ~4 S$ f; n3 N) W
$ J4 `9 S" ]2 z' h0 `
set trade-record-all n-values people [(list (? + 1) 0 0)] ; b5 G% `  |6 B
, l+ h; J3 {" }3 r! E$ q
set trade-record-current []: }* i/ j9 B# j( R  p, F4 @6 _' i
set credibility-receive []
" i* a4 ~1 u& Q; R0 y% \5 n  Fset local-reputation 0.53 @+ y4 i' W* k* T6 T2 O
set neighbor-total 0
) b8 {( a4 n. W' @; \$ c$ Tset trade-times-total 0& a8 U( F# }1 p, Q
set trade-money-total 0/ @3 ~0 r$ F) u) h5 j  e% q7 B
set customer nobody
( R- ^6 L# b! j7 j- V9 ~9 v* Qset credibility-all n-values people [creat-credibility]" s, }1 L+ @3 g1 i
set credibility n-values people [-1]
, ~# d- Y, I" qget-color
  G& v: G: d8 }0 o$ T: o

0 j2 Q) z: w, `4 qend8 {' ?3 o$ t  c: W

+ U. R# }1 Y1 d2 ?( @to-report creat-credibility- M+ E1 c6 E5 b, s4 M
report n-values people [0.5]
" v6 z2 H% J- v+ ~# }) R+ Dend" {1 a( |( s6 U; m; l

) @* I" q( F; \  E) L" Fto setup-plots9 J6 R1 G# y9 T4 l2 C
; m! n: A, }% _+ j
set xmax 30

+ E( z0 v& n, U- ?# W
/ P. l% Q: U0 dset ymax 1.0
  L# I9 N1 v( {1 I/ {& \6 F

2 g. A2 H3 x/ K0 N6 Dclear-all-plots

) v0 |6 c9 z7 d7 a; X$ V
& ?& \# p% i/ _; [* X5 n8 Isetup-plot1

% n" Q1 y6 @7 G6 N7 ^# `' ]1 m* ]+ x1 E* K7 U
setup-plot2

1 |! [# Y/ a: p9 Y
  R$ V0 p8 |* G* E6 Zsetup-plot3

; A- g8 V! `  {9 m- ?1 s# ?end
/ _, J9 ~  |4 N; U, ^( I
5 u9 _5 }! E3 R! p- {;;run time procedures
) N; r! t, U* }- \4 L( b
& s3 q) C! @6 Kto go- ]! ?2 w- N  }, c

: i: T3 g- j. d3 X# {! pask turtles [do-business]

$ C8 I, F, ]& w: N: G+ qend* {/ m/ q" C' Q1 V

! w% a8 ?( ?# Y5 _* mto do-business , Q7 r# h7 K: p1 [! u

% O: B0 ]% T  e: Q  a7 B$ \, b( m; G2 c
rt random 360

" ?  y2 x* }* k  u+ e& o
; v# K9 b2 r0 J, p' [fd 1
! ^) r6 N1 ^0 x, o  a7 c( t
6 F# h3 C1 ?9 i! k/ k/ D
ifelse(other turtles-here != nobody)[

$ M2 V& j8 }9 M! `( u
4 ?. M1 G& l( D9 Xset customer one-of other turtles-here
; D0 E& S% o# y. d
1 f/ o$ u0 X9 a! ?# ~# L  d7 Z
;; set [customer] of customer myself

6 p! ?' M% M, \- n2 P
, j  w7 R# A  h# E  c+ ^set [trade-record-one] of self item (([who] of customer) - 1)
* S$ W+ F! s% E) G- G[trade-record-all]of self
$ d& S: E" L; U4 a6 f;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

- C8 k, t" D3 O4 h. g1 c+ X
8 Y  G3 b1 w% ?$ e% eset [trade-record-one] of customer item (([who] of self) - 1)2 L5 r6 a1 g" }& ]
[trade-record-all]of customer

8 x: y6 B2 R- z6 {: k% U2 M& |+ C% I! [
set [trade-record-one-len] of self length [trade-record-one] of self

  E- e6 U: l4 y. @4 Y! ?
% d2 K! J1 \% N6 k& }set trade-record-current( list (timer) (random money-upper-limit))

: |0 T. k0 _9 A  f$ Q
9 `! }3 A1 v$ Z9 f8 N/ _6 Wask self [do-trust]6 \' R9 A; |, H0 r, ]
;;
先求ij的信任度( l3 N$ P5 W4 r6 e) H) R

) g* y, q; }7 j" O* G1 Wif ([trust-ok] of self)3 I% Z4 E% L2 ^, W; C5 {
;;
根据ij的信任度来决定是否与j进行交易[
. Z; k/ \2 j( [$ i7 \ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
4 U# `# y) ^# u
- @: H" T1 b  m# M' d[
; R: b3 J/ a- c; Y( i( _- }

& O, X1 P6 ]5 Wdo-trade
* L- ]' l4 B9 ^
; T6 B/ ?8 [" g, |3 F
update-credibility-ijl

. l4 S3 h8 T  o8 ]4 L2 ]7 q7 N6 W- M$ P; H+ y. a
update-credibility-list
6 U! c$ q8 E0 P, K/ K
6 C8 s7 M8 v( z) {# W/ J
" b3 U6 L3 f3 r7 r+ Q# R
update-global-reputation-list

" K/ L# q+ u% B: O8 U8 q4 p: s3 V- j  |% x2 y9 [3 ~( d
poll-class

! ^& c8 \- B/ K$ b* j+ h
& o  n8 V2 E$ g4 m/ d1 Q; qget-color

8 m0 w6 d  `5 g2 U8 W/ X: J3 K
, o2 F' A# j% B]]( t# E+ w' A' N' `* L. s/ j
: V" l* ^8 S: h# s7 i; e% ?
;;
如果所得的信任度满足条件,则进行交易$ j% P7 l( U$ z) l( z

# q) K: o4 B& S" T  h[
0 S7 f# d% A- B2 @1 T5 N% K$ z
5 x+ M+ t* U$ F$ Z* _; |) \# {# h
rt random 360

2 N* O8 E& @, m! e
8 i% R/ [- W7 `) K( x8 y! v! u+ Jfd 1

' |$ q3 w) X# W0 d2 |- b# Z- N% B  P0 I' o& ~, {" g- E
]
, s, u) P  E; t/ w. y; s, l

  h+ p. g! i8 ^" c$ e  `5 I$ J8 }end
0 K4 s' r5 N* a7 h

0 s+ M1 B5 V; \# _% _% Y* v  rto do-trust
3 Y/ N7 j0 z2 |% x& aset trust-ok False
: A/ {3 w( Q$ ~% ?7 m- \/ P
0 j0 \( K+ d. L- }" I7 G' M) k

+ u5 y4 h, j9 M+ nlet max-trade-times 0
! W; m# g. E+ D$ Xforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]2 b9 n0 j* E5 q- Z0 q
let max-trade-money 0* B! s: q- j. o# E/ M! ^
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]! r$ g" Z4 z4 s+ k9 _
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
3 K* d! K- U$ e+ l9 J. P9 _% y' ]; c0 W

/ S/ P) O3 X! W$ tget-global-proportion9 b8 j# R4 M; ]7 H6 w+ W
let trust-value
+ z7 e5 Y3 @3 U$ K. M; t# E; p: plocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
9 b9 W1 \, }) }, g6 D- Z
if(trust-value > trade-trust-value)" B5 u, A% O& {# C
[set trust-ok true]$ {' d6 ^/ h0 p0 W
end
* V- V! `! y0 Y& X. T  \2 _0 |* M& V8 ]1 ?
to get-global-proportion5 S$ o) X& f" z) V3 D; l+ n
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)" \" j) T! d- P. H6 z' O# I
[set global-proportion 0]' R6 E2 K0 W2 b+ p5 ?5 c
[let i 09 @1 x, u: v) U8 L. i# M0 b8 D
let sum-money 0
' V3 B' d+ e7 y$ e# Y; Ewhile[ i < people]3 |! d; I7 g4 q5 i9 u! {0 g+ O- K
[3 }. k, T4 N0 \& ^
if( length (item i" y4 L, Y- k7 w: ]" m) g
[trade-record-all] of customer) > 3 )
- a$ {, v1 Q. }( q
[
% F& L) N- @; T, |4 ]4 ~4 sset sum-money (sum-money + item 2(item i [trade-record-all] of myself))5 U7 B) a6 y# h1 x. n" Q4 ~- v4 E6 l
]) ?, r  l/ X4 Q( n  Z6 U6 B. F
]* u0 U6 _, O* D, I% v
let j 0
5 T- T/ i+ `" F* M. f( h* Glet note 0
  |: Y( u0 v2 {, ?" Z% \while[ j < people]
" h0 k, Q0 X, i* V6 {  A[
6 B" h) D8 T2 o: m5 S4 \( ?  Gif( length (item i0 S0 i. J) A; K: E
[trade-record-all] of customer) > 3 )
/ _# s5 r% r. m1 h# D, ]9 b
[) v: o: x: P, D: x) s# ?5 i
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
& r4 f; O: M6 u* C4 m# X* Z[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
2 }9 `" _  y% s! V/ o9 f[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]) ?6 N) P9 t: V$ T# h5 c' N- [/ n
]! U2 Q3 w' y& W6 \
]
) F+ T) ]/ d$ g' @4 a1 F  hset global-proportion note3 r- N3 [1 S; ^/ ^, g
]
% W8 C! g8 p: V) M2 q' k" pend- h& ^0 v9 ~2 t; ]

9 H% g; Q" L& W+ r$ _% G- p1 ?to do-trade
$ C' f, m8 s6 V;;
这个过程实际上是给双方作出评价的过程
7 ?- R4 u4 N, `# t/ [  zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价, n. X, o0 C8 u5 \& N" \" L
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
9 M& S( N, D; d. v8 e9 @" zset trade-record-current lput(timer) trade-record-current- V: r/ D+ B, w  r! g
;;
评价时间/ a' c- _3 ^, U
ask myself [
# [9 t- b8 @1 R( z2 Cupdate-local-reputation: ]9 B$ @' k3 O1 c" L
set trade-record-current lput([local-reputation] of myself) trade-record-current2 g9 y% Z9 N6 q  ?. [  K
]
6 b, O: f) O8 F2 U+ i! Oset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
0 K: W. e, D6 q8 i0 L0 f;;
将此次交易的记录加入到trade-record-one
! _4 Q* V: C7 d- t. |  Z, Sset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
3 w1 `# {& c: r' R) k$ }% ilet note (item 2 trade-record-current )
) a* Q2 Z$ O! F! z$ eset trade-record-current
7 y4 _8 @- c' w- v/ t. I( z(replace-item 2 trade-record-current (item 3 trade-record-current))
: S% ~4 W8 q4 a; ]
set trade-record-current4 K. K! h" @( O! G) F% }
(replace-item 3 trade-record-current note)5 a- T8 q2 h  i& p; v+ l- \% O
; S3 O, D  m) E
) D$ N- \% R: T  I, X: C; B, u& E
ask customer [
8 Y, Y! i' F5 ]4 F6 gupdate-local-reputation6 k* S3 A! q* w. ?* M6 w
set trade-record-current
; O9 i, m  M. d2 G(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

- {/ {. B) M2 F9 @0 t  w+ Q]9 t8 n% `2 E2 d! ~  i/ J
* P* k. \. Z" ^) u, @5 I+ f5 O9 x" l

' C5 x, W* \) m2 ~/ R+ u' ^! mset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer* O. T# D- B' I6 M# v
8 A2 J7 C2 L# |! D0 b$ A8 ?
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))' K$ F# r2 X4 S% D  l' {/ V4 D
;;
将此次交易的记录加入到customertrade-record-all0 l$ }) ?$ U3 }
end* m0 ~2 d( N$ ^8 s$ r' R; a. k

6 _  s; {$ }9 G3 j; i; Nto update-local-reputation6 r& x8 Q7 l1 h; B% q/ w0 e! E
set [trade-record-one-len] of myself length [trade-record-one] of myself
$ P, _& U  u2 `) |1 i. A
* h$ L# U& z2 Y) i5 S) p* w8 o7 ~
;;if [trade-record-one-len] of myself > 3
4 B" o; U. }. [
update-neighbor-total  @" Q3 C7 n  I0 F" R$ o+ }
;;
更新邻居节点的数目,在此进行/ _' e( B4 o4 _' W/ v& ?5 I. T
let i 3$ b+ ?9 x1 v1 b/ U- s! h4 t
let sum-time 0- A* o0 e- e0 h( F3 T4 h# _
while[i < [trade-record-one-len] of myself]% ~) M# M+ G- c/ C9 L- R- h) P
[
9 v6 L/ ^+ I1 j9 D8 o4 x0 `5 ]set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
+ Q' L6 Q8 p  d$ d) Pset i6 _* a* s. Q- S1 A5 S* L, ^
( i + 1)
% z8 r2 K0 X* s% B1 k, a
]0 G7 Q" }# M8 R7 m
let j 3  j! T) ^0 A. s
let sum-money 0
' b8 b. Q* v5 ?while[j < [trade-record-one-len] of myself]: [0 `0 b1 ]( q! m4 ~7 Y: u
[
! ~) n6 u8 p( Z$ {3 N. xset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
- _. |" w8 @7 Y! [  ?$ v/ u5 iset j9 x0 a. A: `& D& e
( j + 1)

6 q, R  ?+ F* t8 x" S2 T+ G" X]6 _3 E# Q4 |) M. d- ]$ q  L8 d8 N3 H
let k 3
  B0 v4 K5 Z4 L: Q( Xlet power 0' c: T2 \% m& W  R8 T0 D
let local 0% H# w) C& L& s5 ]2 x, ^
while [k <[trade-record-one-len] of myself]
+ Z; f' M' X+ d1 S( @[0 o; S( y" r% A2 g/ [# y4 K
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)
7 t0 d; p( H- V0 B( k) |% wset k (k + 1); O9 o- H' H0 L$ G% Y8 v7 t
]* E9 C5 D0 E4 o/ U
set [local-reputation] of myself (local)
# H# }, D5 a+ x" R# D3 Tend% z1 u6 U( J7 t0 r

- l: h, Z7 l* Q% w) u% i1 S  Gto update-neighbor-total7 O/ B6 w6 S# _% p& s0 p
+ P! A% K' X# H4 ?+ }8 i
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
' t2 M; B( L! f# e
4 h0 x# i. n2 z6 b
# l+ Y1 D  _4 f! L4 y+ [
end5 H! H/ o8 b% q* P3 _) `5 p6 L, B
% _; C2 q' h3 p' |5 f/ D) u' X
to update-credibility-ijl / I; a  X+ x8 X2 F

$ M+ l3 e. [: B7 {;;
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。
9 y5 c$ k- V) S" slet l 02 G2 N, M* k7 m7 M# q$ j' Y6 p2 w
while[ l < people ]- b& E, V3 a1 ^3 q8 l9 C* I( E' R. T
;;
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
% s0 ]/ ^' X+ [& _[2 k. C+ P- _. V; j0 f" f
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
8 i9 X  i7 A4 t+ b- L; ?if (trade-record-one-j-l-len > 3)1 Y" b7 |0 W" ~1 j
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one5 Z; ~/ |7 e* U5 S1 }
let i 3* p/ B& k" ^9 ^- @0 p0 `
let sum-time 04 B% }9 D: w( l
while[i < trade-record-one-len]
8 Q- N6 r" T$ j2 L[
1 I2 K& k  j: T+ s# T. Z5 @: oset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
- D3 f  j! c4 z; j5 |+ L& aset i, z# d+ f" N$ C) i
( i + 1)

5 U# Q, N4 ?$ `]8 ]7 S" i! k7 T: w* u1 V
let credibility-i-j-l 0
: c' C$ w' g, T;;i
评价(jjl的评价)
- ?$ W: b4 o" Llet j 3
& I- _& R8 ^' |: [' Nlet k 4
8 c/ k) s" ~$ V, U) `" jwhile[j < trade-record-one-len]; _! l$ `  a4 q# ], [7 W7 I/ m
[% Q1 C. t( s  |2 }
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
$ \. L: G) z. bset 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)
7 e. K$ F. |" \8 Bset j4 j* |. ]2 I8 I+ `
( j + 1)
: ?8 l6 |+ r6 @6 X+ a+ s+ D
]
6 ~2 ^8 Z3 \& j& r/ U- Z+ c6 tset [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 ))2 P2 i/ v7 |0 V- `
4 m1 w% ]( S. ~& l
9 {% V/ _: V* `# `* F
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)): p& H" O7 h& P) x$ d
;;
及时更新il的评价质量的评价0 A& D7 t; s; X' y; S! e9 ^! P% I
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 w4 w, K* ]3 j4 Q! y
set l (l + 1)- x. C9 M" K+ p
]9 w3 }* n' x! [" z+ ?+ R
end) `  d7 C+ |! V$ c9 |) d4 F; n
1 l) K: w/ q5 n  f% K2 C
to update-credibility-list
5 B& t$ \, P! `. I( j9 Glet i 0
$ J6 j7 Q6 J& ^: ]( L& r" B- ?while[i < people]& M7 P. J- ~4 s+ p$ A" d) y0 k3 Z
[
2 l% I+ ]" w# k% w5 q3 H  `let j 00 p; |% u; J' b! c( ^' d6 X0 W
let note 0
) K( v+ N: }4 e2 Q9 Klet k 00 X8 A- U6 i5 K- D
;;
计作出过评价的邻居节点的数目) U  V8 B+ F. P- `7 d; o
while[j < people]3 i. H% B. v& T" {7 h( l& a! C1 o6 S6 _( O
[, U3 Q9 Y8 j- T
if (item j( [credibility] of turtle (i + 1)) != -1); U6 q+ g# G) T
;;
判断是否给本turtle的评价质量做出过评价的节点
( w% Q) R  {5 i- [! ^2 U[set note (note + item j ([credibility]of turtle (i + 1)))" h% B7 Z, c. E/ u" q" `
;;*(exp (-(people - 2)))/(people - 2))]

, L* @9 K* y6 z& {, a3 }set k (k + 1)
. w# P8 T' d9 g8 x]4 o) t+ A% c' Y& o0 E+ |
set j (j + 1)' J. H2 o9 t2 j
]
# h/ G& e/ f! s* e! I( ^set note (note *(exp (- (1 / k)))/ k)
; I+ R* d( H, r  @# M& eset credibility-list (replace-item i credibility-list note)) ?, ^. a6 u8 z4 }9 h6 m' m
set i (i + 1)5 z; j. J* K% K: [; A, r4 d
]
( J6 ~+ ]* ?6 L' n- Eend0 d9 D5 }" N8 u; u. N

/ F" p& Q1 ~) dto update-global-reputation-list' c$ Y( f3 d$ B5 i
let j 0
/ K  f$ ?$ G, I8 L  @+ kwhile[j < people]2 G9 m  I( f8 B/ x5 U3 _- z
[8 D- o' U% _8 E0 ]
let new 0
+ B/ F6 X2 b. ?* c9 {" |;;
暂存新的一个全局声誉
3 `7 D, O& N8 z. M+ x; Y! hlet i 0( q" `' O0 m: T2 E$ z* Y
let sum-money 05 l. S: B7 T* V' A
let credibility-money 09 V- Y% t5 x) ?
while [i < people]
1 c; f: D- `7 V! e' Y4 L+ L. w) e[. H4 z# f  \, f& E
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))6 i2 H( ]6 W+ q* T
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
! n' o! B* ^; x" ]3 ~/ Gset i (i + 1)
$ n! |- ~5 v' k; b  N) W]0 g9 x$ z* Y9 n, F; H
let k 0
1 b$ S2 W, ^. r3 D# Blet new1 0
) w9 M, D8 X7 Bwhile [k < people]7 P2 L5 i2 Y- e8 N
[7 b* R; i/ I! [% m
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 m% G1 K5 @0 d, Rset k (k + 1)5 A1 W: |4 R2 x! W
]! c( j. [; d1 c) E  ?9 [
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 3 M. m  i: f5 O1 e1 `  i- Y
set global-reputation-list (replace-item j global-reputation-list new)2 [4 F4 a7 L0 u# k: O
set j (j + 1)
) N- M- e' i. S, V' _]! t/ Z& s$ j: {) P$ C. l
end
1 B$ P) ~9 S: h) o0 h  W- j: A  y. x0 d1 E( ^$ A4 Q) A
4 ]1 s: m# a& p; v9 V: A) X

# t% F2 {' Y4 V- k+ u# F$ Ato get-color
  F1 n8 Y0 V5 ]) M
, t  Y* f. _/ Cset color blue
0 |4 D5 D' B* K. O2 J  K  j/ Z
end4 B/ |" k" q1 s  w" [' B* E

; |+ o$ C5 `/ B9 D/ Wto poll-class
! s/ i2 K' ?# a/ Z6 R2 t- _  zend" l( x; |$ R  `1 ~$ l+ x( Z

" L0 v2 g- T8 u9 P# H& B  H3 lto setup-plot1
/ \# ?9 u$ d' Q; W5 _% D% {' v/ _& }/ T/ ~' Q
set-current-plot "Trends-of-Local-reputation"

; z3 w9 V3 V, T# @
0 ^- @3 y/ n' ^, _* sset-plot-x-range 0 xmax
. N$ u. s+ V) X1 D
. }6 ], A- f7 j/ N( Y- i
set-plot-y-range 0.0 ymax
6 J: `- e+ d/ l5 `% A0 }
end1 P, s" j: r! B

3 q) K; `% r7 p: U2 y0 uto setup-plot2
+ ^3 z: M) l, l3 g, s! k2 o2 y. N% E2 H9 I. U+ \$ o  L$ H
set-current-plot "Trends-of-global-reputation"
* b) T. s1 X: t" I
2 f4 K. _1 B4 w' d6 Q; d
set-plot-x-range 0 xmax
; M, s4 Q. R- X6 H3 g9 p& S- \7 m
' V' a) N+ N, X! C+ q
set-plot-y-range 0.0 ymax
1 l7 j1 w; v% V. f- x$ v
end: g4 |. G% D& X2 q! W- p- l

  f% g/ f) t* N1 Z/ D' mto setup-plot30 H4 |% @/ ^1 Y$ N" V6 E( |: a+ j
" o9 \2 _! d$ n  J
set-current-plot "Trends-of-credibility"
7 b2 v- i( X6 P; Q9 o
( d( G: o7 }( K: D+ K+ |
set-plot-x-range 0 xmax
$ S3 ~  Z, _8 t. l" [% n+ P* i

4 ]8 ?3 e0 }1 Cset-plot-y-range 0.0 ymax

1 \- l, k; w, I5 L0 gend1 R: C% S8 J+ \$ W

8 @3 G, F& W$ V& f7 rto do-plots
% ]/ d! K1 i9 P( I) N. |# eset-current-plot "Trends-of-Local-reputation"
' C' M% {/ m: h/ I2 @3 Kset-current-plot-pen "Honest service"
3 w/ A- V7 @. i5 ~  g% E3 b1 t7 t0 Vend
& H- Q* [6 q9 d8 e4 |% R0 J/ u" P% l5 f1 j  f  _3 Q# Q  ~
[ 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.3 R* u9 S# _5 {4 `- Z
0 m. T" Q5 X0 }% ^% l
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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