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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:9 i8 m. z0 `0 }: Z( e
to do-business
/ M9 p1 R' r& |/ V rt random 360
8 D  v; D; B6 f: K$ y3 ~+ B fd 1
6 ]* V- L* C+ N! w& d0 n4 H ifelse(other turtles-here != nobody)[2 i! D8 M3 I( {8 k& T2 C
   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.2 e! S: j, V. e
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
" S; @! n5 V  E2 n$ K0 _" D   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
# _, U4 @$ I& D) \! s- @   set [trade-record-one-len] of self length [trade-record-one] of self
/ K' T6 b, o4 p! H0 J$ ]- }) t   set trade-record-current( list (timer) (random money-upper-limit))( l3 U2 b; f7 r2 X, L

& b. d  q# Z: _问题的提示如下:; i7 ^+ b2 k3 v7 [. }* g

# _+ M, `% M2 v( _8 ]3 _error while turtle 50 running OF in procedure DO-BUSINESS
5 I9 ^1 n" G! V- k  I, G1 ?  called by procedure GO
- W1 [- ?; A1 L+ W3 b; ~OF expected input to be a turtle agentset or turtle but got NOBODY instead.6 P$ E% W) a' F3 j' Q( C
(halted running of go)
" ]8 E  {' n* F2 ~' z( i0 i, s* Z/ d+ v/ n$ ~* U
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~~4 S  h8 ]5 R+ U+ w1 Q& O/ p3 `
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
+ w  j  r+ L8 S$ l4 W& D! Tglobals[
& K4 s' ]$ d5 e2 z1 \xmax
3 W- [, n' a2 ?$ D% ~ymax: z+ A' C6 y7 Z. R* S
global-reputation-list2 g9 m8 h- d) t

% \' G2 T) |/ ];;
每一个turtle的全局声誉都存在此LIST
& w! o) C& U* V3 |5 zcredibility-list
  s: T6 C% z: P;;
每一个turtle的评价可信度
# K; @" [% k7 z$ N/ ?. \$ }/ qhonest-service
2 h: G: M! r3 d/ K+ A( }3 ?. Wunhonest-service
8 W; a& ]. S% poscillation
) _, p$ V3 N: w9 @( O+ Nrand-dynamic
9 T; A# H  r+ h! ?4 \]
: W" B/ B, [( ^4 |; @) k6 `
4 J, {( G1 \3 q, Lturtles-own[
7 M. V) `5 h' c/ T' a4 I4 y: ntrade-record-all
0 H2 p5 H, n0 E. r  M& S7 X' m;;a list of lists,
trade-record-one组成
: Y7 H# E: x" Ktrade-record-one
3 j; G) L4 d' r; s' F" K) v; u, b- J! a! Z;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
# W% a( M8 t0 O! a: E. P: g7 k; Q8 @0 Z0 x  w" v* j
;;[
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]]
- P* S5 a& r0 ]  n- p/ @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]/ [- t- G$ x% o( W
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
0 f1 L2 R2 Z3 S( a; Lneighbor-total
+ H( E. L/ e& J6 A: d;;
记录该turtle的邻居节点的数目2 o- A2 m/ I2 X1 o; F. O9 q
trade-time# ^# [  P: Z' o* ?/ e1 ?; j
;;
当前发生交易的turtle的交易时间0 p% w$ U; y; U& r) `  U; Y- {
appraise-give
0 b- u& K2 h4 \;;
当前发生交易时给出的评价
6 ~: M2 J& o! B# Q; K9 {appraise-receive8 j: S3 S0 T7 L2 j; {# c+ f# }7 w
;;
当前发生交易时收到的评价
' C  [$ Y/ i- V: Gappraise-time4 A' c# ?# `+ @( w% s! i- h% X
;;
当前发生交易时的评价时间
. r! _: `# F6 g/ m- M/ wlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
) X1 f+ n" R- z( \" ltrade-times-total
2 A7 X0 c" \) O0 f. n;;
与当前turtle的交易总次数
  Z- d, @1 n7 C  Q" S: itrade-money-total2 G% H& x+ [4 O& _1 V$ {1 l2 |; h
;;
与当前turtle的交易总金额2 x" b7 |; U. U
local-reputation5 W" Y/ U- N9 C/ D
global-reputation) B' }( m( d! |, M9 h; `4 q, S
credibility) r" g7 Z. |" E2 I
;;
评价可信度,每次交易后都需要更新: Q! f5 @7 t) Z
credibility-all# V4 U1 W( W4 Z" r! y' b* c
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据( y, Z# ~3 T9 |) @" B  K9 R
( p$ G- f6 B! 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0.57 o: O1 Q2 l- b4 x
credibility-one
7 |; @  O6 J1 C6 d* 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
/ b" \  W$ ~5 m( Gglobal-proportion# {$ |5 {! q% e* C: g- X$ [. P' p) H
customer4 I/ _/ M* I% o
customer-no
1 ?7 K: {& ^6 _; b4 Otrust-ok
+ S6 Q7 B9 ^* O7 Q5 G6 [2 l6 V& I! Z0 utrade-record-one-len;;trade-record-one的长度
: v) U3 D& q/ K]4 U7 ~5 m2 P1 ^' Z* u- L. E
3 ]! Z1 |8 @! K- L8 }; t; o
;;setup procedure& W1 x) c  x1 q: p- T! o5 ^
! I0 b# ]# k3 g( J
to setup
1 C+ h: B: l9 E5 ~$ V7 v
, e% Y7 A$ y; O; Z9 ~ca
7 c' l, U& \/ T8 P7 E

8 m! ?0 b2 B: q2 Binitialize-settings
% M, g& s/ P# ?/ o7 s. @
* b4 k- S! v4 K5 j4 Y/ o
crt people [setup-turtles]

* ]3 G) S& _+ |4 n  r* x- ]
0 F9 K- L5 C- X& N, N$ {8 Lreset-timer
/ s$ C8 \) a/ F9 B
7 \/ b* x9 o! k  l9 X* |
poll-class
- Q! W; ?  S0 z( w0 N

& S. Y$ o5 A6 rsetup-plots
4 P/ R/ f" W8 v- Z9 h0 o

" H/ h# T% E9 T6 z' b$ ydo-plots
/ j5 V, f# F) ?6 e' h2 p9 q: d
end$ }$ Q* Q9 L  g7 N7 Y( I
  a/ l8 P" U4 ^; E( j
to initialize-settings! L+ K0 G2 Z! V( F% x
. n& Z) Z9 P- z
set global-reputation-list []

, @9 ^, \$ b1 R5 _
7 g" `" n9 p4 V- j9 c( p, A" |1 ^set credibility-list n-values people [0.5]
( p+ @  P. \' a( T
7 L: C9 Z1 k  W  Y5 S1 ~; T8 _
set honest-service 0
3 Q% L  O! a6 q% C6 z

( u; e9 c: Q4 k! R. L! {7 xset unhonest-service 0
7 v' P4 B' z! B; r1 p
" f7 F& M6 a- D9 S$ L" |
set oscillation 0

' F. ~9 o6 A9 \0 O$ C+ v7 a
6 w' q& X! \3 }set rand-dynamic 0

& [0 |! X6 V1 P& a6 [, V# send  `+ _# @! z5 d8 c

8 A  P; a; R3 v5 ?! G9 Zto setup-turtles " \( d. b, f+ \+ p: N! }& Q+ I0 z2 m2 a
set shape "person"
+ y6 a, \+ B6 ]* }6 Lsetxy random-xcor random-ycor; c: s' B* x, W# c6 Q3 h
set trade-record-one []
6 c& _- q9 o1 t( U7 g. {
6 y+ z: N0 x4 K% `* e
set trade-record-all n-values people [(list (? + 1) 0 0)] 0 ]# j" _9 ~, ~

( W" w" v7 D/ C; O/ `set trade-record-current []% l: l1 j  B  h7 G8 d
set credibility-receive []
. m: N" _) e1 N7 B& X3 S+ zset local-reputation 0.5
, K! T! L* M! Zset neighbor-total 0
! E- [; J( M; v- Y3 a( rset trade-times-total 0
8 [) \/ P) _# q& `& W5 Gset trade-money-total 0
. T# m6 q6 k) h2 M9 Pset customer nobody
; v- l, C7 q3 o! H3 v3 I9 ^) \set credibility-all n-values people [creat-credibility]
" D1 h+ `$ P* N& s1 w% Eset credibility n-values people [-1]5 O0 P2 A3 h- k" l$ U! k
get-color! z+ |' t3 A2 I+ o, z9 `. M+ z, B

; k" N- f# l7 Eend9 {" G: u& C7 G0 E# ~0 A

1 j/ I! W5 p7 J% I8 O: Vto-report creat-credibility
& Z7 v( y: C  xreport n-values people [0.5]
/ O/ b8 y6 t+ F( ^- nend# z. h  i  q- x

2 _- X9 _. c6 L- a; S2 oto setup-plots
9 B2 j9 Q4 ^* E( A, M6 f% T% K$ `5 D. X! E  g3 W' i% I
set xmax 30

: H, r! m8 F  T+ O/ y8 h$ E2 l0 F5 S$ ~0 n
set ymax 1.0

& G3 O; F( P2 ^3 l- D, X# _
, X5 p- B: Q# j: v# Q+ V1 tclear-all-plots

* a: N4 t' x! r% q; H
$ p. Y; Y' [2 L5 Ssetup-plot1
4 T; p3 a0 E; U% s2 ~6 h& X: s
( ^/ i, B7 _+ A/ s
setup-plot2
; ^% D/ n8 D3 m. d% o# p9 I) J; h$ [
' W5 g$ Q  E9 P" Q# P) k3 d3 E4 Y( L
setup-plot3
( z# j, c* `  B* z. q6 a. q9 D2 I
end) T1 q$ l6 b. ?4 Q3 g
$ y, J6 Y5 n/ P: L
;;run time procedures
- \1 ?) x9 h1 R' k* q3 X
9 l5 y5 ^* r; Z( q3 ?to go
' E4 K( i0 x( o7 U0 i
" d( B$ `* h1 W  U; _; Wask turtles [do-business]

; O$ R2 s) S' Dend
. ^5 Y8 J+ n, `! _. Z  k& [
3 B8 K: k# W+ u' }& I4 h5 |to do-business
, z* k. u% I" n' F1 T9 X

; A3 s* R  u' H1 ?! @
6 J! p- d1 Y4 O3 Urt random 360
0 a$ B1 p% V& v& T% D
$ @+ W' x5 o9 H
fd 1

" M) Q, Q$ }& h( b9 q8 s* K2 ^/ n/ X
ifelse(other turtles-here != nobody)[

& R  l3 v+ C' x$ W4 H( i
6 F( l7 O1 ?7 G4 C+ L5 O- ?set customer one-of other turtles-here

6 F9 A" R/ S7 A. q( V! ^- K' O; P: Q) x' M
;; set [customer] of customer myself
' `' v) k# I" }7 m0 K

4 U& }+ n# J& H7 i1 Rset [trade-record-one] of self item (([who] of customer) - 1), S( o9 y9 l, S7 G, j
[trade-record-all]of self" T  C- o9 i' G- X& U
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
% I. {$ a8 E5 U# |5 A6 X, X
4 p2 Q; g" T! ~; B; k
set [trade-record-one] of customer item (([who] of self) - 1)
5 j# [+ b, |- t[trade-record-all]of customer

+ Q9 U5 v7 W# f$ {7 Q
( G$ X! F2 L) S' L& N, B2 w0 X9 Pset [trade-record-one-len] of self length [trade-record-one] of self

+ c$ X" O* D* X1 V9 A9 V
4 B9 I" c  P4 E4 x0 gset trade-record-current( list (timer) (random money-upper-limit))

0 g0 V/ T! I0 H" W
$ U7 b6 q9 H) G* Uask self [do-trust]2 e& ~6 i# C. O
;;
先求ij的信任度
7 ?6 t/ ^  k! `. K1 {% H6 J. x# ?! b" O
if ([trust-ok] of self)
$ p' ^+ u( X. [8 P$ p# p;;
根据ij的信任度来决定是否与j进行交易[
+ C; x& x# D, K# l9 u4 Y1 Cask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself/ q# Q# M$ @9 Y1 ^% _" i
' _/ S. U% s+ F
[
( d9 A7 q- A5 m) |4 r, J

7 N8 X2 |) K; K1 s. J( P  qdo-trade

. [! Q" @( X- k/ q2 ^. s3 u
4 u6 h/ b6 d  e- ^. g# Xupdate-credibility-ijl

3 z5 x, K: s- D' w' x0 N
) F: I1 N6 G* @7 m2 bupdate-credibility-list+ I. t5 b* [# T% ~' h7 O  e3 K; Z

  _+ U/ {% S- L, {2 O  ^8 B2 {# w. t9 l
update-global-reputation-list

* `. W; e- `6 F) L( |  N( w0 u! i2 t* E8 J0 `( E( \) f, \" O
poll-class

3 X* `8 }3 `2 }* m1 _! o% r6 ^- P5 e* U, J
get-color
7 r7 X; Z. A$ y: _8 @" D9 a1 N) N* h
  E" a7 j9 c" f1 {& x% }* L
]]
1 _$ S0 J3 n, Q& k, E$ z% \3 O, b/ F# J4 A& N
;;
如果所得的信任度满足条件,则进行交易, i: C: G9 _* r, z7 p$ q
9 N, v4 i5 o1 w, I6 e& Q
[
; T  J6 W: A0 }0 {

* E) {* x5 x4 @, C' vrt random 360
' v7 T9 X9 `, p! a% s, o$ j7 G9 Z

$ C) r/ j/ R; A. a/ Z7 H/ N5 K+ qfd 1
; K* r" \3 w; J, ]) Z

( u; n  @. Z. l" B) b]
1 q" ?0 J/ t  ~+ x) \
2 d5 t: d  P& N) E/ j6 @) x5 J. ~
end
; j2 p- }0 c5 `
6 d3 v: F; E: K2 t- f
to do-trust
+ E& |' H) _, K1 A% O; kset trust-ok False
' G1 ^; ]9 D6 n( H5 m
5 G; z: G- Q" o: N$ A
3 `( c8 d5 I/ [# k9 n
let max-trade-times 04 f! k& h4 Q& X" R
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. H2 O0 V# i% }) f. B
let max-trade-money 0- r2 }0 |2 R+ U4 s4 D  L
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]$ G/ h# b( c2 Y. }3 Q3 g3 J$ }
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))- V' x5 j% f% \  G! v) O1 h, B
; Q/ d! @% w$ o/ y
1 C! |  t$ t" i' l
get-global-proportion, l& }/ ?' U/ p  z8 T0 o
let trust-value. J8 J# Z7 S% Q+ [1 _- ]/ w
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)
+ T5 ]6 Y$ |; j; C: d! ]
if(trust-value > trade-trust-value)( b9 T4 r% M  J9 q7 x% @2 o4 A/ n
[set trust-ok true]1 k/ J+ p" [8 ?7 N, i1 A+ i; n4 q6 i
end/ u5 e* _9 q* `# X, l9 Z, K4 P( M

* {8 T; Q' S& A  a' P5 cto get-global-proportion
: w1 z- M$ W' C. B! xifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
* Z# R6 b$ [) k# N- o+ O[set global-proportion 0]
/ p' A3 c5 I7 z[let i 0& U( s% t' S/ G8 l
let sum-money 0! C2 R& \6 ?. E3 s
while[ i < people]- I  a" m; }. H- m/ I. `# g" I. b; K
[# O+ O5 _; k. c' `( M7 z  Z
if( length (item i- K5 \, i& z0 n5 n( m. [3 H+ H
[trade-record-all] of customer) > 3 )

6 ?3 _" E$ G( g5 ]) N( h( D1 N[; m4 i9 C5 |1 r
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))3 o  D: D8 b  D
]
+ I) j" J* [/ K/ k( B0 `]
, ?( d3 I6 i) f+ ~let j 0; A; p3 L8 Q& k. e, d0 |
let note 09 [. S0 l  C- G- |8 H
while[ j < people]
( ]3 u; f- ~' V1 e[
2 f. I4 v, ?4 Bif( length (item i9 s' r; F9 [# @% J7 U+ `
[trade-record-all] of customer) > 3 )
) @; d" v+ g( b
[* y, }: r$ u7 s4 F
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
& f- Z0 Z3 K, W  y; m[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
* A  Q) C; a4 z: N% E; W[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]2 a/ Z( x: n( t- ~
]
3 j" ^) X4 G3 s5 v6 q! I- d]" |9 l, E) E3 ~3 `
set global-proportion note9 j' T# G, t- W6 o- u
], u4 {( [( M( V7 Q
end. H0 Q. |% }! E; i& A
4 w6 u9 C' \1 f% }, ]
to do-trade7 @: u) m7 \5 W. f
;;
这个过程实际上是给双方作出评价的过程5 r; ^' \; }7 M; L* |2 H+ v
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价  a2 g9 n. Y' b& j* B" o
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" N0 J! e3 k6 p' c
set trade-record-current lput(timer) trade-record-current5 C6 x. J1 S: U
;;
评价时间0 |% D& P$ I# ^6 I3 W8 i% h+ w! W
ask myself [# `$ Q, Z6 L) R
update-local-reputation1 T* w4 S& M% D# P( S2 T
set trade-record-current lput([local-reputation] of myself) trade-record-current% }$ a3 d: x: r  I" D; S+ \7 w5 i# F
]! X* e0 T! I7 ~+ ^9 F
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ k! D3 T3 h4 n& g1 m( `
;;
将此次交易的记录加入到trade-record-one$ G1 g+ q7 b- t* N
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
9 C9 f. M: \( K. N& w3 elet note (item 2 trade-record-current )
4 ]2 U+ \1 q+ x3 h7 Z1 fset trade-record-current
* p" K8 z$ z1 @( x* [5 }(replace-item 2 trade-record-current (item 3 trade-record-current))
1 I; u& z8 b: P+ h+ ~' n2 L
set trade-record-current
  u" t# I- h" L' m(replace-item 3 trade-record-current note)6 g, P3 e1 s2 k

) V- F. B0 j& K
% Q* f/ Q% U+ Q* q3 @- [
ask customer [5 _; `; V5 r! v, |: W5 v  C' V
update-local-reputation
, T9 L. y# i) z8 m/ nset trade-record-current( b0 x1 B7 V8 f5 |* u
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

; L8 h; V$ K( }; l9 R]
. N- F! {$ a" j# c" k
0 u/ l5 s0 m2 R& d: o8 q

. q7 F1 r3 Q( y* z, y. X9 vset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
" m4 ]1 }& r  {+ q

1 v9 u1 B+ J3 |5 J8 D  ?9 L) Vset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
7 V* C6 d+ \; p3 X: v0 d1 Z;;
将此次交易的记录加入到customertrade-record-all! o0 |- [+ ?( z2 j
end
; w% a  z8 c8 ]$ g
1 m4 W  s3 h: r4 r- Qto update-local-reputation( M. I- f  U, N4 r( g
set [trade-record-one-len] of myself length [trade-record-one] of myself
& a4 K( X2 S6 i0 b9 w7 U! H; {% {# [) z% h
: U. K% b2 U; Q  g1 I2 ]
;;if [trade-record-one-len] of myself > 3
( R& C0 v' I  x$ m% {# H
update-neighbor-total$ l' d& W  M  u/ X+ k. L4 `
;;
更新邻居节点的数目,在此进行% W- `( _$ T' ]$ e' P2 h
let i 3
. x* a' S& U, h9 T5 c5 ^/ R+ Clet sum-time 0
5 ^+ a! M& D& G2 P5 _8 f" v6 uwhile[i < [trade-record-one-len] of myself]
- M6 p* N3 B! @8 p7 U[
$ V9 r7 g8 i8 ~# g# Eset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
! H* T, @- p% ^3 d( kset i# g" S( l1 T. f( V8 N. _
( i + 1)

8 m! G; y  |8 S8 n* }7 X. A5 }- t' w]
5 _7 Y/ U/ u7 Q$ i7 llet j 3* L0 a9 w$ P/ B/ e: F( I
let sum-money 0
( w/ M, _2 q% H) @  l6 |1 b; @while[j < [trade-record-one-len] of myself]
9 c) f8 Z  S+ n1 v[
: |, Z, W/ I7 _& @* Dset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)% ^4 h/ [$ y" ]/ z8 x' b
set j8 O3 n9 a" i7 c$ P7 E2 [( o
( j + 1)
7 c. E8 e4 E1 \( W& w
]
' u1 ^- W5 p( Ilet k 33 O6 S( [. ~! A; F& i2 e
let power 0. I5 S- A" N# M7 {' W2 N" l5 x- {
let local 0
0 A* y; F% |* L, f: y/ Fwhile [k <[trade-record-one-len] of myself]; L# u" H. m5 A3 B8 d1 o7 n2 H
[' ^( _. p! [; g6 ^9 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) 6 n% V8 K4 M2 }
set k (k + 1)
0 ]/ Z7 z& I" Q]. l  \( y+ v: a4 m! Y
set [local-reputation] of myself (local)$ U" Z1 ]8 h& F$ x, P
end
$ a% o9 M" r) x9 @
4 `# o2 l- s; M  P1 |: zto update-neighbor-total
3 `8 l- H7 J9 e! g$ u. Z: |  H
3 I! `, ?" L  @% Q+ |* v) Nif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
0 l* Q/ i. t  l: d  `8 p# C0 _9 I  k4 E8 z3 n. l, L+ a+ e

$ u- i$ `) h# iend3 q4 O, a5 Q9 q1 e) T; g* C+ s3 Q3 O# |

0 f5 N* e8 }3 vto update-credibility-ijl 2 @# ?* v; I$ b- z0 n. v
" L  z- n3 r3 _4 w) j: I. ?' V, }
;;
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。
5 h9 c4 a# U* M3 f3 tlet l 0
, W/ [# d, @; l* Bwhile[ l < people ]
  X. ~/ D; t$ r6 J: R+ o0 [5 ]$ t2 \1 z;;
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0 z% \' B$ j1 l& ~$ n/ z+ l
[
5 v: k/ J- V6 r7 q7 }' N" rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
: N# V7 _- a8 \if (trade-record-one-j-l-len > 3)
( u7 ]7 ~' \9 ]2 ?2 i[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
3 f" @% [/ Z" I3 p* @let i 3
2 x7 X/ I7 J+ w; |let sum-time 0% V3 p4 k8 D) [9 ^# t0 s0 q- ~( t
while[i < trade-record-one-len]
7 ~) X4 ?, c4 E+ _5 F, W1 q[
8 h1 b1 y7 ^6 [9 fset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )' @3 ?% K& F- d3 _
set i
2 H, P" X% w2 D/ e4 |$ v# f. ?  M) W5 f( i + 1)

* N2 \# Y7 a- K$ u- p]& s; K% R5 c7 R* z
let credibility-i-j-l 0) X% p1 B: p' d' |+ T7 s
;;i
评价(jjl的评价)
# R3 ?( Y. S3 z7 g7 Tlet j 3: o$ }( L, W4 O" z9 P' o2 K
let k 4
7 F; h- S2 E/ L/ Y9 Wwhile[j < trade-record-one-len]
( R, j. Q0 Q! }) _; @[6 |+ D: n1 B% X' b, q
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% e, C( J7 A, H% z
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)
7 N* O& n- [3 N5 M+ z  _2 Fset j
! [6 R" P; {2 ?$ T* D4 i* s) @( j + 1)

" w2 r: g# _' o8 x4 u! R2 A]/ V  h- q) ^  E* P1 _8 d6 q! g: K
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 ))
9 C: D  G4 q7 T* K5 b$ ?
/ y6 V; S' c* \0 a6 Q
3 x9 p; Z) `7 j, ]0 {. w# I% W2 Y$ j
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))8 B2 _" I: s) e6 C# [
;;
及时更新il的评价质量的评价- \6 u2 x5 Q) Q, F
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
3 d" a) M( e' f5 f  g, h& i/ z) ]5 Vset l (l + 1)+ X. n+ G) M% k/ X
]
" r: }3 L' K5 V- c- i) I0 h$ J2 z! G- Eend' u. u$ W: r6 W* E: u: o
0 }9 S- }. U; {0 K2 s3 A
to update-credibility-list# K) M2 z$ v4 g6 B- H
let i 0
; Z# v" A+ V/ o8 J8 p2 i( iwhile[i < people]
7 X) K. c2 t- f+ a[
2 N9 p- F2 T2 B2 @let j 0
3 l7 m+ q' h1 S1 clet note 0
6 Q* y/ G4 \, G7 Mlet k 0
% ^/ M0 ^! ]8 E* e;;
计作出过评价的邻居节点的数目' y5 i! y8 _) a* H1 c. K
while[j < people]7 p& w$ s0 N) i" P7 @4 v0 _! z
[- a6 i6 o7 r: ~8 i# l
if (item j( [credibility] of turtle (i + 1)) != -1)' O  R: h8 |0 ^5 `
;;
判断是否给本turtle的评价质量做出过评价的节点
. b- C& j; @/ P% c3 C[set note (note + item j ([credibility]of turtle (i + 1)))
' _( a6 x: T" R% s;;*(exp (-(people - 2)))/(people - 2))]
- o# d" C% k+ Z+ J# `2 p; K7 q
set k (k + 1)
% F# j; y" f6 X]2 `3 P6 Q  W& \1 [4 K! ]+ m
set j (j + 1). _" d- T: U; s; o+ A" I
]8 l) j  S& y& V+ |3 |+ x0 t( r. `& X
set note (note *(exp (- (1 / k)))/ k)
$ X3 t) X: M3 @3 ?! B7 Wset credibility-list (replace-item i credibility-list note)6 Z) s, C$ B" E$ |# C6 r4 ?
set i (i + 1)9 g9 m/ X& K$ u! }
]  {$ d, g- F- |8 H" [
end
. C' N( `% Y- L1 b( Q7 g" ?( q7 O
, y6 y2 b1 A3 Z' k7 n2 p# E7 M4 Yto update-global-reputation-list$ J9 f# \" u# V9 C3 _
let j 0/ j' A5 Y" ?' z3 l6 ~! q
while[j < people]
  l( B% V! r3 P8 B" \' A# Q[
( ]% U& ?- G( v$ m  Wlet new 04 x0 e* H/ l9 e) D2 ^  P
;;
暂存新的一个全局声誉
5 L- ]! G# E- ]9 O, Flet i 05 T" C  w, ~) V
let sum-money 0# U5 ~$ d7 o9 ]+ m# i
let credibility-money 0  G- q3 d4 A4 s6 ]/ L+ N  T# U
while [i < people]8 D2 }2 v: M" M, X( B2 E; y4 e) k4 u
[# E! `3 N: D# ^" S; k
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
7 E0 e! Y9 d, W1 vset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))* l* g' p/ G5 `* N6 x$ k: p
set i (i + 1); n$ J" \) i: V# ^& ?
]4 G) @  U3 k6 c, e& ]' Y* f! ^. j' q
let k 0
1 \/ D, B# p+ z+ R  }- n' ^$ Jlet new1 0
) q" \7 W, f1 a1 l- bwhile [k < people]
. v8 e. J' z: y[
2 m* O6 D# n- C- G4 h8 E# M* l, Fset 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)  d  R, {# B+ A/ ^+ ?4 b$ {0 }
set k (k + 1)4 l4 k# S0 D9 F; P3 z6 D: d" h& g
]) f) ?6 _9 T: M$ G
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 7 `0 j% o1 t/ ], C9 \
set global-reputation-list (replace-item j global-reputation-list new)
5 ]4 O" x* O) A+ nset j (j + 1)
8 v) e5 ^$ W$ T# V]6 a2 m; c9 k5 L, T5 t. t
end
2 m7 D4 l$ D4 o# h$ l. o/ M& A5 P' X0 k) R
4 C- ~5 t% W; o! U1 _
" K: E! X9 h, m7 Q6 C
to get-color! w: ~! W' G; x, r2 S3 X' c

7 R" R4 S8 y2 ^" k" B0 uset color blue
; g2 i  H- _4 p1 s
end& m: x# k. O5 P6 G8 k! F3 ~

( [. Y! L# D+ T% l( M6 pto poll-class
5 A# x" m% p4 X0 `5 Xend1 j+ x6 D9 z, \* `) H
2 Z' V, e8 z% j: G; D
to setup-plot1* m- y( I/ r2 |1 N6 n+ m) v
, V. K" U! c, O8 h
set-current-plot "Trends-of-Local-reputation"
( \6 X  }1 a$ e; v0 X. ?7 ]$ G# C
+ _: e/ p8 d" _. y, k. z
set-plot-x-range 0 xmax

' |2 w7 s+ d3 h2 l4 H2 @  W3 s9 I/ u/ |4 [4 G& ~9 i
set-plot-y-range 0.0 ymax

% R. J% q# M' D' o! Aend  u9 n2 I* L2 O" T  c3 ]2 z
! Y. k9 X; c6 N! @  c0 `( P1 @
to setup-plot29 H* F! X0 O" C

% J. {: ?1 I  v6 I0 y2 Uset-current-plot "Trends-of-global-reputation"
7 Z. V' R" K& x6 c

& E0 R( Q: H) Rset-plot-x-range 0 xmax

2 g; l& D3 W7 {$ l, V$ h  q# R( X$ Y3 @( d3 S: s
set-plot-y-range 0.0 ymax

* E  Y8 G- E1 A5 u' I. e& [) Q1 g: xend' O. G2 j8 X% ^) h- F/ G# ]) i1 `
7 W4 ], z  T/ [( v9 W( S% |
to setup-plot3
6 n6 e% G, e( i  H
3 f6 e) V- |3 ?9 [1 A, p/ Lset-current-plot "Trends-of-credibility"

  s( n8 {) S- h6 }; A8 p, C3 z$ A7 i- @% Z" h! Z, s& {
set-plot-x-range 0 xmax
/ G( E, Z+ Q0 E5 k! z% d
) G7 @0 |. P3 l, U, q1 P
set-plot-y-range 0.0 ymax
  J- E; t4 K% s% f% X- z: u! ]
end. a& v4 v% m' E% M, x
: q/ j% q+ S1 o7 m, X
to do-plots& A, u, a2 O/ M, W* W6 P, p8 @
set-current-plot "Trends-of-Local-reputation"3 W0 {$ `' L. \: O; E
set-current-plot-pen "Honest service"/ T& |3 k# [4 }, ~, d  i2 C! j3 x
end: I! ~' c" Q( J; b

  w0 L9 r+ j( z[ 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.
. y# ^4 o2 K& P+ F  m! f0 _$ y' f1 i! ?1 ?% L# [, h  u" E
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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