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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:3 q1 ?. ?2 I6 l: x2 }
to do-business
& U0 D  A9 G4 B/ {/ k0 H; K- V! B rt random 360
7 y* e$ H/ c6 v5 K6 p% T/ k fd 1$ p% j* `0 Y2 y* w8 c' Q( s
ifelse(other turtles-here != nobody)[- {. q4 f% [( m) A  k) y+ \
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.* q/ F& N! X" t9 P; d6 G) O
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
- i( x& V5 m8 |   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
; R: |& d0 k5 }4 g: t2 `1 H+ g/ R   set [trade-record-one-len] of self length [trade-record-one] of self- H( x* v* w$ w, V* R: n& G  _
   set trade-record-current( list (timer) (random money-upper-limit))$ ?9 P2 i7 A# e' _8 ]
' F/ u& L- F. P
问题的提示如下:
  t6 ^3 V6 Q' m. M
9 I# ^) V: Q  F, N' t0 T; C1 serror while turtle 50 running OF in procedure DO-BUSINESS" n$ Y. V1 b: `
  called by procedure GO' e" F; E! R& ?* i
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
# W  ]$ ~  }, p) H
(halted running of go)( `% ]1 [! P( H  c( l4 w
: h& V1 d0 B7 D% y# ^$ I* A
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~~- j( r; M0 k6 W) k) p6 \# P
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
* F, p& W- M7 `* H! E- E2 e1 l* y( sglobals[! V' W- u0 I* x8 v6 l- r5 w/ m$ ~" z
xmax
7 q  O, h! k7 i5 M. Wymax
+ l6 q9 G9 d- Y- y. O% s% \global-reputation-list
1 N% [3 ^1 q( A/ O1 {
# M4 p; S" Y+ e0 e$ C: Y# [* w;;
每一个turtle的全局声誉都存在此LIST  ~. B, P7 t4 l# o+ m4 G
credibility-list+ k! [! N: G! m4 L" C2 h) Y" Y
;;
每一个turtle的评价可信度
+ T$ Q& z; q2 ohonest-service2 v# w# t7 Q4 X
unhonest-service
* w0 F: T% s+ e  E1 c- M% I) G# joscillation
4 h# `# K3 E/ urand-dynamic
4 `6 |2 [. @" G  n: l# f3 S]( a5 O6 K2 a6 |; K
9 }( \/ o0 L1 A" |# s; r
turtles-own[
: o! L0 \7 c6 m( _1 e& Z& _6 q5 Gtrade-record-all' ]" }. h* m- _* }, V7 S6 x9 O) E
;;a list of lists,
trade-record-one组成3 ]8 @3 E- W+ i8 A
trade-record-one
$ V5 M9 |$ X6 J/ A;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
" T/ ^" G3 l4 n  G! q' T& f; M' C. y6 a
;;[
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]]5 Y% D7 ^4 |. U1 F, x
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]
* O4 G, M1 H6 H7 s# B/ ?' k0 M2 Tcredibility-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
2 _8 b; J% w) A- P% H% \neighbor-total4 l! o1 ?( J; ]# }
;;
记录该turtle的邻居节点的数目
5 Z; V' W, s6 O" ctrade-time$ a7 j+ I" A, \3 d
;;
当前发生交易的turtle的交易时间
7 u, f' p; |" S" I# [0 Fappraise-give8 Y# |8 h, A# s+ f$ \; Q4 \
;;
当前发生交易时给出的评价) N3 g$ G6 v9 r/ C" s% A( w
appraise-receive. u- b1 g$ k5 r0 H4 m% X
;;
当前发生交易时收到的评价& t! e3 b* A9 _& g0 I" |- k) ]3 x
appraise-time8 o! ^8 R( K, {$ f
;;
当前发生交易时的评价时间: y+ c( M5 B: J" H4 k! U7 `% f
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
* o0 M& [1 v/ ^$ W2 p- htrade-times-total
9 ~1 L6 q1 ^* W: b/ p3 S1 `;;
与当前turtle的交易总次数2 ]& `: c* @" l5 n# @0 V1 C
trade-money-total
. m, Z1 ]! W/ F$ W. \. E# j4 x;;
与当前turtle的交易总金额
) {8 O) c8 f: Y% L& nlocal-reputation9 n% Q! m7 S% J7 i
global-reputation
1 N. P6 P8 E+ T6 \credibility
3 o) e- E  v6 K6 U;;
评价可信度,每次交易后都需要更新
/ @0 c" ?; r5 M  acredibility-all
7 `! i8 i0 b4 G) z) p' j5 X;;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 {2 I' s/ X" m+ @8 \# m7 f
! H( K( H. }! E( e+ V: q;;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0.56 O' `3 b& j8 O/ q
credibility-one' K; ?; G+ ?" @  e0 a- p
;;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! z0 q4 M7 \" o
global-proportion, P' ^2 E! I6 h  A4 y
customer% c) ]9 O% V$ B! |
customer-no
1 Z) Q, c3 D% n( J7 ~trust-ok/ P$ |' |3 M3 P% |; i# k
trade-record-one-len;;trade-record-one的长度( B% _1 h: M9 D& [  ?  T" ^& D
], n6 R& |+ y2 y+ y  |7 E( x! q  f2 @
( \- d/ T  N3 M7 j. L
;;setup procedure5 ^/ l/ C  n! |% f& w. S7 h1 L7 L1 a
) M7 y& q0 D3 v3 A
to setup* h' ~/ Z, V$ Z7 `9 \
( h2 `, D/ R4 \
ca
% O4 `3 F- ]+ a! V, w4 D
# w) _0 `% t% P
initialize-settings
. D0 ?. B2 L$ g1 y
2 G8 s7 f: z6 `# i& \. z  {: A
crt people [setup-turtles]
/ [2 x/ S" B0 \/ O

/ U# y  t6 @3 Z  treset-timer
" h) i/ A+ v# ^6 x0 M! `9 g

$ }) F) G. h# u7 [poll-class
  o, f: [# s6 R
0 i7 U, ~7 A% O  b1 |2 o
setup-plots

" Z' \3 S( N# I  F( y6 C  A
6 w& }6 @* E' z6 [8 N% S' c+ N. [$ U$ @do-plots

3 J* R/ S' Y5 [, Y9 d5 qend& b, U1 a$ P, p: \% R* z7 M! e
9 \% X$ O4 R/ ]5 ^/ w! P- d
to initialize-settings# I0 H( ?/ T, c9 V3 C4 h3 r' f

+ q2 d  f2 g0 I# O4 u8 w% sset global-reputation-list []

! \( Q) v+ W6 k
: q0 b% h- Z3 f2 ^  q( rset credibility-list n-values people [0.5]
" L! k8 K! D4 I5 o6 }9 Z

' t/ N, F4 N" p. n9 Zset honest-service 0
2 c6 m5 @4 z& S/ G3 ]$ v# P. c+ m
$ x% g! o$ t" v9 g2 |, `% m6 W3 c2 I
set unhonest-service 0
% h' e& ?9 [0 |, }: J) W( ~
& K# I* b7 d. v. ?" ?- z5 d
set oscillation 0

+ _, W& M% U  A  F: P
9 z, x, Y7 G! [& X3 J0 |6 Rset rand-dynamic 0
2 v' u* ~* {4 S
end' |; [$ n: S$ N& Z& m0 d5 `
! Q6 P& m% z; x; J% {4 ~
to setup-turtles / K& V- h" v$ N' y
set shape "person"- O. }: K( U" ~( [
setxy random-xcor random-ycor
+ p# p" h2 `& ]+ [) p; c1 Y7 Pset trade-record-one []  `8 u5 K( x5 o2 R, U) r$ A4 x, M
0 n& e' f3 }/ e* E! a
set trade-record-all n-values people [(list (? + 1) 0 0)]
6 m( n2 r7 |: }: t3 }& u

( q5 K/ b# S4 e# ^set trade-record-current []4 T# W! V+ ?7 a; S+ I  T# l$ c
set credibility-receive []
& @! Z; O) g  P1 Z8 wset local-reputation 0.5
2 d8 N9 Q# J/ }9 q0 D  Qset neighbor-total 0
) s- S* H# c# u. a- A& Tset trade-times-total 0
4 }( a" G  C3 W/ t$ g5 L  Q  lset trade-money-total 0; h2 q4 v/ K- D2 N+ X+ b  `* W
set customer nobody
5 i2 h1 N, Y9 x" p+ Xset credibility-all n-values people [creat-credibility]+ I2 H5 U' a+ [8 Y  u
set credibility n-values people [-1]- O2 r* N( D' H! I7 ?
get-color
- R9 ~5 ?+ B# h

9 d8 P; y* B' G5 E% ]5 |" t% r& Pend
! Z3 r" Y1 b. k" B7 {3 Y% Y; S% z. Y3 `2 A
to-report creat-credibility) o' V0 C' O6 L% D+ v
report n-values people [0.5]
- u; H, U3 I7 Y6 l0 _* J" pend! w) Y4 r( V+ P2 S/ V; ?9 O
% ?$ i; t# n' Q& e: l, s5 _
to setup-plots6 |* b1 G9 I% ~2 G
5 w4 s" E0 U. y
set xmax 30

  ?: l; z5 x1 ]0 {3 K
6 ]' x1 h+ b0 ?' Z. Y; N9 cset ymax 1.0
) ]' I- A1 U: N$ h$ I: [/ ?- e+ N

+ L1 C3 ?* E( u( |" B; ?# ^8 W; ^clear-all-plots
8 @; _8 [# z- y# t

, X) Z3 B5 L( C3 v) f) k0 O* @" Isetup-plot1
. `  m5 M' ^& J& y7 N3 W; }

3 b: P' ~* D1 O' J- `setup-plot2
* z) Y, B7 M" x/ z$ _6 R( W
  f$ L# V& @1 W) S* d. y
setup-plot3

1 ]5 V+ m& A+ `# T- f7 cend' q2 u' X) f+ M* M4 [+ H8 ]
. t. G0 A- }) \% _+ V' L: N6 c6 p
;;run time procedures
( i# C- d# d& V# @1 o& w0 n" `# g7 d( c2 K
to go
/ g2 n' d9 m( h5 d8 I6 S7 T
" v4 X) T- s- u; L! U- T' dask turtles [do-business]

* d! v; q4 \* i6 {, ^9 Bend7 l  b# R* S, ?. g4 u& P3 _

) W: ]3 U; `7 U) `5 P, t/ E$ zto do-business
8 ^. N, _; b) U) h
' {' b6 N5 \  h  A8 Q: U
' \  `9 L& b  L1 ?$ G* J/ e& o
rt random 360

: V& A9 _9 ^& `) V% b' d; r% K  S, u( m7 t3 P4 i: r9 M9 p6 [+ k; b
fd 1
- a1 Q% |6 ]# C
6 q- t! d$ m: A$ d- m( D  w/ X$ g  Y) V
ifelse(other turtles-here != nobody)[
$ x5 S0 X  z" j

% m# e4 h/ _1 I5 }  G4 x. S0 b* Qset customer one-of other turtles-here

$ y3 h9 s0 R; w5 P
; k( _  J- ^0 v) ?;; set [customer] of customer myself

1 u$ V! X7 v2 E* b7 ~
) `5 {/ C6 |5 G: dset [trade-record-one] of self item (([who] of customer) - 1)) q6 r1 H1 t5 I  K2 I4 h5 t
[trade-record-all]of self
; ~5 v8 x" l+ p/ n7 k, w;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

: }+ A" T  o6 {( b! o9 a& h3 G' _
. S1 D" @7 `" `9 L/ d* \- V8 t) d0 eset [trade-record-one] of customer item (([who] of self) - 1)
$ @8 X/ y6 W2 p# l  n[trade-record-all]of customer

7 t" h( \* I; g1 V! J% n# K
: e) T) T& K' T& [! yset [trade-record-one-len] of self length [trade-record-one] of self

2 x; W; F8 E, C$ j: X
* k( c" U7 N' P. xset trade-record-current( list (timer) (random money-upper-limit))

5 Q; D; i% q2 O. H& F0 S  k" ~# l7 A
ask self [do-trust]5 s7 D" a, k. y9 D5 X7 B% E6 P
;;
先求ij的信任度
2 z& U5 B5 }, N! h+ [" K* N; l, ]
if ([trust-ok] of self)" ~0 D9 Q! y1 g2 _1 ?* |% U
;;
根据ij的信任度来决定是否与j进行交易[8 x9 \, f* B/ Q8 v8 K' g" }
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself- D$ v) [, o1 e
0 O4 F: S( `. v/ X( H
[
! I' p/ T9 }0 q# l$ X' Q3 I* k9 y" T
- {& K5 X* F) L) w
do-trade
6 @7 v* ^& a& Y. S

- {5 C3 l7 i/ u0 d2 L  ]update-credibility-ijl

/ h* |+ Y/ v$ R" S0 E. y2 V: t$ R0 P+ l; z' B$ [+ s. y
update-credibility-list
, [" Q7 N: f/ k0 k$ T4 r* H
4 e5 e, w# [: D( A* E

& N! w& ~5 E0 o6 W, ~update-global-reputation-list

1 H% [; E1 v* p5 v1 V
+ ^3 U8 [* @* J( _7 mpoll-class
0 g$ c: [4 P) Y/ W/ B9 V9 G) h' [
5 c' K& k9 }4 |7 E& \
get-color

0 F+ N. l+ i! [1 X+ o- E
4 V" J) q+ L. U]]% ~$ {- I, }' @# z) U5 G; y

0 J, A. z! U9 i7 }1 k$ v" g- N+ N/ r;;
如果所得的信任度满足条件,则进行交易8 N3 e; o# P6 {3 |0 K

. ~- c5 Z6 [5 A% L- G1 {: M5 M[
. k% N- P3 c- R' x$ n
0 o" _. l; s( `. A" O
rt random 360
6 G9 }9 r9 S8 g" v6 e2 `3 z2 \' r( u

4 r' g" K2 Q- ]fd 1

& V# M7 g2 L6 D% D- C. q2 Y1 a6 B: S! u9 s$ }1 c$ U1 p
]
9 T* ?/ y6 c" a6 g" U% X, R( N
0 m; D8 I' t0 @$ i7 n: w
end

3 z! |* ?. v  {& U1 Z6 ?
$ U4 i. E) v+ K3 b/ v( n7 N: C: mto do-trust / G, b. r2 y. V! O+ ]/ ]
set trust-ok False4 X; \3 V% _: [! I5 v3 ^

# r6 C8 j, Z$ y3 l: Z
0 d$ _, ?6 ~/ C3 Z: b0 i1 q0 {% |# j
let max-trade-times 0
+ o# j9 V" O9 Aforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]1 c: Y/ U2 j( h. I3 N! p
let max-trade-money 0
2 e7 }0 l$ U* n. a% kforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]8 [' c9 c6 K& n. M0 U: K
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
* h+ |6 H% }4 H% _! z6 ?7 {& p  z+ q# O- b
9 E; {; @2 W% `+ f3 r+ ^- g8 {
get-global-proportion: l' k9 Q0 j- f, D: N1 D$ e
let trust-value
: V8 X7 @& d) m/ dlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
/ c6 r3 |6 f) k" K
if(trust-value > trade-trust-value)4 N- p+ ?" F# E& }1 t0 @$ f. a8 V
[set trust-ok true]+ R0 x0 T6 a! P
end$ f7 I5 z% ?# i# V' g9 m. Z8 Q2 ^
& D8 H7 Y! W6 w& Z
to get-global-proportion
' S9 X5 C' b3 C4 @# U( Eifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)$ v& ]5 Y4 j6 t: Q
[set global-proportion 0], Q2 s/ \; B: l
[let i 0
5 P+ t! T$ U1 v+ v# wlet sum-money 01 X. ]* @3 m! ^, o8 G/ G2 c
while[ i < people]
3 A' P6 M7 T. t[
8 W* ?8 M: b5 b  F2 rif( length (item i
2 x: F5 d4 s  o[trade-record-all] of customer) > 3 )
9 i: j3 U6 g0 |/ E5 ]  o
[
6 F% }8 [- }5 Y! g1 B) z, p; pset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
- F5 L+ x2 G) []/ G: ]/ z' c+ y6 ]! P1 c7 |
]
: O5 [5 {1 m7 s' olet j 0
' a5 a! b/ X, C4 b" Olet note 0
2 a' m0 P% E2 g! ?: n% w, Cwhile[ j < people]
, T1 ^& q  @7 L1 q+ s[. V9 E6 d3 `! ?3 F" Q" q' p
if( length (item i( ~1 F2 }( _5 \9 F: [2 ^
[trade-record-all] of customer) > 3 )

# L! ^; g, E3 ?! F7 k[
) d; T; t+ M  ]& `$ W! s; G; Xifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 h  t5 A, G( \; V% l
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]# G. i' T3 u" m
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]9 r" G$ W0 {+ E* p
]
; l6 x+ ^+ H( M]
4 A8 a6 R5 c: \* P: X2 I0 uset global-proportion note9 P/ S0 m, f9 j
]
& Q2 z# Q# m: Nend$ R( p- n1 Z( h4 p# g

; B; Y- M4 G9 e  I/ ^* y5 P( t4 F0 W: pto do-trade8 d/ t; V& {- Z  `2 z( n6 L
;;
这个过程实际上是给双方作出评价的过程" |  V, `* I4 i+ Q( B+ N5 Y) W( i
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价! w! y9 b0 J7 y% M# \  j
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
6 K. R0 y, i/ T7 f3 I* p4 oset trade-record-current lput(timer) trade-record-current7 o6 s6 n- g; U$ a
;;
评价时间
% c) u% `& ?4 e( ?: M/ ]ask myself [4 H; S1 D1 L5 E& |
update-local-reputation8 S1 P5 \9 A* G: R) D
set trade-record-current lput([local-reputation] of myself) trade-record-current( U2 U2 {" T4 i# F8 X5 ]) \
]
+ m& x; w; P! O6 v" L& E5 Zset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself# C7 w3 g) H5 d4 L5 {1 ~) j
;;
将此次交易的记录加入到trade-record-one
/ `% Y0 q# h) I* D5 f% Zset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)# A& |! _# N! V& s; G
let note (item 2 trade-record-current ): Y) c" r0 i5 Y; F* j, {' |! A
set trade-record-current: D5 D5 p8 _  e; c# x# L  \8 B
(replace-item 2 trade-record-current (item 3 trade-record-current))

0 i+ V0 b# m* P* l( n( zset trade-record-current1 \7 z) }) }% Y2 U. v( i
(replace-item 3 trade-record-current note)
1 N! i1 O' z9 d  R! B) f" A5 z1 Z6 r. q3 K/ p. Y6 E( f
, h* Z: u" t% e! o
ask customer [+ q, }) \, ]/ W9 @0 E* T& g
update-local-reputation- a* y3 B* ], z, S! m, t; E
set trade-record-current
4 f5 E/ |1 s2 Y  u( t; }(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ _# I4 u3 U- n, x
]
& w9 F! R1 K# h. K  W% W& \+ v( x" r3 W  H+ A2 ?( P" y% k* H
, o$ U3 A8 {( R* V, B
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer2 k. g1 e% E  y6 H5 F/ P
8 E( _+ R& `* s+ e( M/ z" T
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
! g: {$ I7 t5 N  z8 C;;
将此次交易的记录加入到customertrade-record-all5 @: k, O) U& A
end
+ W; y" y4 z9 w$ ]! Z& \3 O" Z
- I8 m( Q5 f! T* u- t0 jto update-local-reputation
; ?5 u& W3 P! O6 P7 Lset [trade-record-one-len] of myself length [trade-record-one] of myself
) T8 \; r: I! ^5 j9 L9 I9 N( n1 W0 e3 \! ]
& D& U" N3 ^2 P3 s1 K2 Q
;;if [trade-record-one-len] of myself > 3

7 I8 p$ B, N+ i! v- [" o2 e- eupdate-neighbor-total
) g# E. N; h  z2 t0 S! E;;
更新邻居节点的数目,在此进行6 z+ ^5 b. W/ y+ b6 F
let i 3
" Z- P9 O5 \. xlet sum-time 0
& k- @/ {* M/ q) r7 E$ ~while[i < [trade-record-one-len] of myself]
% J3 n  U2 y& h$ D/ W) \  Q& w[. ^- j6 Z) `0 ]3 ~2 k
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ S; a9 T, O& I$ F- T& g$ h
set i/ G! t# e3 c2 P, s5 A
( i + 1)

  e- X) L$ j& K- ^5 ~! U: ]- o; V]
1 e) L& R: {  d/ ~$ m' [let j 3" E/ f+ J; ?5 r2 `
let sum-money 0
/ s) F1 |+ C1 @& Y3 Iwhile[j < [trade-record-one-len] of myself]
# l& Y. z+ R# f0 v, O[6 x9 {7 v3 s3 r* Y
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)
. ^! {7 L1 |) Xset j
7 l' _( `8 L( E9 X% h3 u( j + 1)
2 M9 r/ g6 n+ D- c( q3 I1 ?
]
3 [8 P9 v; O' N) v& |& ilet k 3# W8 M0 Y3 G0 R* S# \- M
let power 0& [1 s4 ^, k0 d! a7 ~9 S
let local 0
! s- b9 C0 D- o$ F+ d& a- [while [k <[trade-record-one-len] of myself]/ }" t: Y3 p3 l8 z* ~) ]
[
; e4 M1 G+ r+ x! c' A! V) i6 \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)
9 r, `# j- U3 V9 \8 G! qset k (k + 1)
. V3 \- C4 |% W2 ?5 ~6 P8 m]) k: M0 O' E" q! C/ L
set [local-reputation] of myself (local)6 R: b( r' t2 h' G' S  T
end  S. {& m3 N" [! N

; M. a6 H; [+ y, W1 |to update-neighbor-total& i6 c; J) k+ ]2 O* B! T/ u, Q

5 {1 y9 }( |! qif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
6 M$ X; K9 T0 M+ j7 y" S
2 {. {9 d2 ?& T" g. }0 f

6 _# b# A; O6 @end3 ^9 m8 a% G( x# i' t

3 R1 _8 s9 d: n3 H' F5 p! `to update-credibility-ijl
* w0 o- g. m; e- d
$ W! F, @; I) };;
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。8 M- M  C, Y* y( d1 e1 S
let l 0
- v) \. S) A- E& S4 Zwhile[ l < people ]$ I" W* Q, y/ q8 G( I1 u7 i  z3 K
;;
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 w% {. A/ D[* M% F$ p6 e% B
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
. w; P# R5 ~2 E; p, I: s5 _. qif (trade-record-one-j-l-len > 3): M5 k5 i* b. P
[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 o# ?8 q- t/ Blet i 3
: [7 x9 U0 e1 b+ }let sum-time 0
& n; T9 M8 u- L: F# ?- z0 i2 zwhile[i < trade-record-one-len]
1 ^: l- M, C4 q[
4 I" V7 ]- R/ W! n; Y; qset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ l. W, [' R  l: Aset i
3 F( A% u: g- H7 K% p$ A/ s! K( i + 1)
6 K, }, }$ i) Z
]
4 u: _. m8 W" O7 `let credibility-i-j-l 0
) g, h( B, Y; \9 s;;i
评价(jjl的评价)& d0 ~; T6 j' O7 Z* U% z
let j 3
; i3 y' {5 Q$ b0 P! Alet k 4# k3 t, g9 i# Y9 m
while[j < trade-record-one-len]3 e! ?6 I  n' ?4 j% T8 R, O
[! Y$ h4 ]3 A6 v9 @1 E- r" {: Y
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( D, I$ ?) w1 w) ^4 r+ n
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)
6 C. G* F, k! @0 _/ v* ]+ Sset j
5 p- l% t8 s8 b5 C) Y! X( j + 1)

  o2 `5 I& [5 {9 V  s7 S]( P2 B6 u  }: B3 H
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
/ H4 v( I+ r7 q, G4 `, H
" N5 M) Y" p/ E; c! {  q. F
  L! g% S3 e- ~6 u1 d
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))9 G8 O9 s$ A, T( j) A
;;
及时更新il的评价质量的评价
; b% U- X; |! C4 q$ X& Bset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]! l( i) V5 P% J' W' i: l8 r% z
set l (l + 1)
, D  X" ?! p6 z, }/ Z; G  |( X( J1 N]
4 `0 D( ]2 S1 B$ w7 y* y. h( \) T. F, oend
4 G  F! h% t' [7 L6 |, m7 e$ v4 q% K( e" \2 x- {; D
to update-credibility-list2 ?& k) C: z( U5 V& E) f
let i 0
% f# T6 [7 \6 W) S" f7 S  `6 bwhile[i < people]
+ C) ]( l2 J. Q+ W[0 ?$ I) i" _7 Q+ ^* c
let j 0+ Y- g- B. t+ I7 \1 X& X$ K& H8 ^
let note 0% Z" I) `9 o: b1 p8 _8 n2 e, J
let k 0
$ ^. c) P# l$ p9 N1 P0 P% e% ]& @6 L;;
计作出过评价的邻居节点的数目# H% O1 E8 ~0 N" s
while[j < people]9 d2 n1 k* p* {- l) q
[
+ _& J9 q" N6 w+ r* B9 sif (item j( [credibility] of turtle (i + 1)) != -1)
% C0 F. C* K8 ?1 [7 l3 O! W/ O;;
判断是否给本turtle的评价质量做出过评价的节点
7 }8 o/ s7 o2 `- C; x[set note (note + item j ([credibility]of turtle (i + 1)))
0 y, Z- H* T9 ^9 N% L;;*(exp (-(people - 2)))/(people - 2))]

# o* F! D; R6 _  Rset k (k + 1), G0 n$ f( ^9 Z7 C8 T* i6 A" d# Z
]
5 O/ H" b1 i$ k4 A6 sset j (j + 1); |* A/ Z' l  \( c: V5 v
]2 {! H' F+ ^+ q
set note (note *(exp (- (1 / k)))/ k)
9 f+ v' }: {' S" xset credibility-list (replace-item i credibility-list note)0 V' ?  f! Z% b9 ~
set i (i + 1)& ?4 R) v0 U# r2 c) Y
]! r) D% y: S5 J( w
end
5 M, P+ a  q' c! M! Z9 ?6 E' O+ M8 m  g6 J8 K
to update-global-reputation-list1 k! h. R9 Y+ A4 H6 J
let j 06 C1 G: D; W: j+ o- B
while[j < people]) e/ Y( f% s3 W  U- m) D
[" s% n9 U, V' l% R7 g
let new 07 \7 N8 f: P% p/ f
;;
暂存新的一个全局声誉$ O# K* Q  K& S) s( O- P, z9 [5 Y
let i 00 P3 b3 k6 c' \! I. S
let sum-money 0
1 r( @8 b0 e: B7 ^let credibility-money 0# J# ~) w9 Q5 G/ X* g8 z
while [i < people]  e3 Q+ p) h+ m4 d# b
[
6 u- v4 o' o- ?set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))$ S: s; m: N7 U7 z! [' H% f, J- O
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). v* C. y1 Q/ }, b* ?9 d5 e2 O
set i (i + 1)3 q2 q9 [* M( v" Y/ V
]
" L9 T, U/ Y3 k7 K  w% P! Jlet k 0- u& q0 r/ e2 W. _. \) q
let new1 09 V8 ?# p5 d% H: T) d% F
while [k < people]; f. T: P7 |# F3 S5 a. V9 U2 |
[
. ~$ Z9 r5 R+ [& `) Pset 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)2 h) h7 J" `, Q- P1 }% F' z0 ?
set k (k + 1)/ g9 G# e7 T$ Z6 f$ [
]0 {$ q& ]! g9 X5 _6 c; u$ j' X
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
* `# x- Y) g, ?% K$ \0 o  j8 Nset global-reputation-list (replace-item j global-reputation-list new)
& w- s0 X) h8 H; r# j& c, dset j (j + 1)2 k; M. G( @, {0 i8 U
]7 \& S# n) Q6 R6 o# \
end
' r$ U7 F: W9 s9 n
. U% f5 I! t9 h2 U7 V7 H& P
" e# M5 d( v5 l* h; b9 ?! r; b6 l, C
' ~; _4 `5 v8 o, ]to get-color8 X/ M( |& a4 q1 ^; k

8 }: C7 |1 I' c. U8 ^; Cset color blue
: B' a5 }& z; [" u+ b/ ?" l! R
end* |2 \7 g& v$ Z- |: T* \

/ x7 c# G# W" b! f$ h7 Uto poll-class
( d- y' X9 M8 U9 ^end
) c% ?5 W) ]! Q) b  g3 q
" E" Y" ~, G( ]+ j9 F) x; g) Mto setup-plot10 _/ G4 W  I/ m5 N& o

# o6 a* A- L- ]: Xset-current-plot "Trends-of-Local-reputation"
, X; L2 t6 B& ~, `) ?" P1 K

# ], j* [" g/ L3 E8 L/ ?) Oset-plot-x-range 0 xmax

4 I0 l- f7 o! ^4 o8 |9 D
, J5 a/ C- N/ }) Kset-plot-y-range 0.0 ymax

! y. i& r; h  L/ T! mend9 V# b7 j  m! R) L- H: }& ]* c
# d% \6 `; F1 }" h
to setup-plot2
3 B) Q, M6 R! s- ]
5 @+ z9 \6 A" X, L$ E- ?* Wset-current-plot "Trends-of-global-reputation"
% z/ q7 c. X! ~1 @( j" X$ K  X5 @
0 C: R/ w5 q& Z$ e- t! P
set-plot-x-range 0 xmax
' D5 [/ j: L" O. Y

. E7 e5 N. L1 E3 Fset-plot-y-range 0.0 ymax

* ?; e% }) M7 ^2 y9 U2 Dend
0 w; n& T) `; G4 s/ s5 A+ j0 {/ o
to setup-plot3
# f+ W. G2 {1 H8 w) Q& J! G$ p; t0 @2 s9 Y7 Z7 O
set-current-plot "Trends-of-credibility"
3 j" r/ ]5 W$ D- L
& p* ^$ c  r8 F- t% b* V
set-plot-x-range 0 xmax

, l9 V: A) b$ Z' q# V1 s. V( L( r) s7 Z9 f/ S, o
set-plot-y-range 0.0 ymax
) `& h+ Z, E2 K% ?' O# g$ w. m* i, r
end
. s) O" {, E: G5 S- w, g' ?  L7 b5 K, H' b  t8 L
to do-plots( S/ v7 Y1 B$ R% B- `
set-current-plot "Trends-of-Local-reputation"
, b* `* g# K5 I* p) {% v: E, jset-current-plot-pen "Honest service"
! M. I5 I% g& \/ J% o1 K6 [7 lend, Z6 @9 i) a0 [9 W4 ^# b/ W
# ?) S' C9 W7 A' e( B0 p  c3 x
[ 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.
/ K4 u$ Y+ o% |( I% u# Z/ g1 h: g: L) [1 X* A8 ?4 }6 F: U
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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