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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:
) X; Y, O" _& X* Y8 b7 `to do-business
) T6 n+ ~. q0 L2 S0 `. @- P rt random 360! G/ Z: J0 ?1 q& I* `$ z
fd 1$ \- z7 H0 `& v9 ], E
ifelse(other turtles-here != nobody)[8 O. ]) s: T3 s6 v- ?6 I/ p# b
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
) A9 |1 H) R$ \  R) y   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    9 e# S! J) i6 Q' N4 i% f
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 z# |8 @+ _, O% F   set [trade-record-one-len] of self length [trade-record-one] of self( d, A* W9 K1 N3 `! `, e
   set trade-record-current( list (timer) (random money-upper-limit))
3 Q. ?" }2 B' I/ _  ]4 B8 l: I* @
问题的提示如下:
0 e0 ?5 |; Y* |8 J
: }' y8 }( E$ A. ~2 Z7 D" f- r8 jerror while turtle 50 running OF in procedure DO-BUSINESS5 U/ o$ D% f5 u
  called by procedure GO
  F7 Z$ H1 ]  T( M) Q6 S$ u2 VOF expected input to be a turtle agentset or turtle but got NOBODY instead.
' e1 V) o3 D) z& \
(halted running of go)* V0 B7 O0 r; b0 l" w$ B& S$ \  W
: D# G% e3 ?  H9 x6 h4 @
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~~
7 ^/ F+ t* i- ]6 J! C. M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5 W+ E/ ^* p: T: i
globals[2 |+ @- V& K, h. v0 Q
xmax: e( l# @* M* h! K+ l9 ^
ymax
2 v$ q' u( D, g" L$ B! Lglobal-reputation-list5 E* k/ d9 Z6 v

& k! E# A, s7 S9 \: M8 X;;
每一个turtle的全局声誉都存在此LIST# ^( n- O& w* b- Q
credibility-list: D) U, B5 \6 |
;;
每一个turtle的评价可信度
8 P  L4 z$ `. p% R5 u/ b5 \honest-service, U9 L0 o8 d' N. P* H, e! q, c7 `
unhonest-service
) x2 g( h! \; s) S8 f! ^oscillation5 w2 x) p' s' U! x- j: `
rand-dynamic) y! n! O$ ?  P% J5 W" [$ Y: q- }
]5 W, ^) a3 Y1 W7 j! x: k

7 b/ I! u. N2 R3 L+ g" I! P" @' _  k% rturtles-own[
" i8 I# L" t7 o8 _trade-record-all- P- ]5 q, a' _
;;a list of lists,
trade-record-one组成. e: b& ~' N( L, s
trade-record-one1 Y) k0 f  \6 Y6 |
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
" ]; D0 v6 F0 ^! U
- I- O& _% |/ B8 X* j* T' {' 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]]
" V$ R3 u$ M/ z; f- V& U3 jtrade-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]
$ p3 Y+ i+ q3 B+ K* Z; Ycredibility-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' R* h- G1 Y/ B5 d- X; C
neighbor-total
  ~* h, w' u9 S;;
记录该turtle的邻居节点的数目
9 D4 a  |) p7 _: U7 I& H: Z8 Htrade-time- m8 p6 J. d' U8 \, w
;;
当前发生交易的turtle的交易时间
' ~' E8 W  C/ v8 ^appraise-give! d% m8 U  h; G. z8 E; B2 `; |
;;
当前发生交易时给出的评价
* H$ _# C3 r' R; J" W2 C6 Z/ Y( s. cappraise-receive
/ C$ L( {7 [, |' b; R$ H;;
当前发生交易时收到的评价' K; }: L- b, M* M
appraise-time
+ ?9 k( @  h  m% M9 z  F5 f;;
当前发生交易时的评价时间% ?3 ^, t! k; c) ]8 i% m
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
/ I+ G2 X& K! Dtrade-times-total7 c/ C% B0 N0 T9 c
;;
与当前turtle的交易总次数+ P' ?% C% V- V* m! }3 W0 x9 `
trade-money-total, h. ~2 _8 ~' k/ X) m' ^( \! j5 `7 U
;;
与当前turtle的交易总金额
; w3 T% D' Z5 H$ Qlocal-reputation% y, y' R/ z! r+ {: B
global-reputation
0 z4 W# f' R  `" B& Pcredibility8 Z4 K8 s1 p% [7 l+ H1 x
;;
评价可信度,每次交易后都需要更新
/ ]5 u, [: \) g" i1 W  W% ^5 Tcredibility-all
' f" H: [+ A) r* S) L; N) G;;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$ i! X! i1 s: R4 m7 B
2 Z, p$ D8 m* {$ ^- T" T
;;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
' G, t. u, K4 f6 _2 l2 I* I5 `. Jcredibility-one" b+ E, I0 \: P/ N* [& u
;;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people7 D3 B4 B3 D% v) {0 J/ l
global-proportion
  K8 `8 B% V" \6 F, q3 Dcustomer
2 D5 ?# q5 C  Y! Q  z. T  h0 v( U# gcustomer-no+ {. T' j/ C% z0 X
trust-ok
2 |4 X% Q/ t- K; q1 r# btrade-record-one-len;;trade-record-one的长度) B1 B/ z+ Q/ T' }
]5 n4 y* O7 o- \- p5 K$ z  L
& ]3 f" w0 e! }9 d: r, A# r
;;setup procedure
" w2 _; a/ ?$ Q2 s1 }% m& x
! v0 X+ i2 D# U) U+ x7 r* kto setup
& Y( {1 B; Y0 z( C+ C  K+ D; a7 x) B7 D- n( d- L5 e
ca
' E: d4 g5 C+ n1 T) a' z4 \4 J9 E. ]
6 r& P1 ?$ E. C+ @' h  ]1 o
initialize-settings
: S3 e* d5 H9 J* A% e% ^, z6 m

* @, P  ]6 d. C9 K* z+ M" Icrt people [setup-turtles]

. R, u! _2 N8 k' L/ {1 l
1 v: |- w) y8 O2 oreset-timer

3 z; F8 \7 D( O9 R/ f$ G# `1 V5 u" a- l/ A# W- [
poll-class
$ ]; c; d' n2 l4 k8 h2 `) ]" l
  d( Q! |* W6 a) f; w: x1 L' g
setup-plots

# r$ S+ }8 j2 t7 y- a4 g, m/ j$ z" Q& W, {/ }" d& S& x
do-plots

- R. H, ]+ E0 m3 Kend1 O% |( v3 p7 N( T( H2 }3 U, u. a1 H& J
- v* |  G) b0 l9 B' o/ b0 i3 k
to initialize-settings+ d( N+ y- _8 F
9 X% ]" p/ d6 R# L
set global-reputation-list []

! q1 l, r. G* v2 v2 x, b$ t, V. r; ]9 Z$ p' V% H* w, z( X  h( k
set credibility-list n-values people [0.5]

) [$ y1 X6 K/ N
$ E- n6 v, {) j. c# Lset honest-service 0

2 d* @2 m# I/ ]! n$ _! ?, G6 Z( U
set unhonest-service 0

3 R% {; t) a! F1 m  w
0 T9 [: X( B& o9 n) e8 _set oscillation 0
9 V6 c3 t- T5 l- ^$ F

) b3 L8 W) M' i5 fset rand-dynamic 0

$ X, G  p2 E$ y7 F. jend
. ]8 h: d% p0 I# c. {1 T' q6 q; e" C' a' h1 T' [
to setup-turtles
9 x# l. ^0 S2 Mset shape "person"5 h8 A3 u( |& d7 F, M
setxy random-xcor random-ycor$ T* S( @- M! @9 ]) u
set trade-record-one []. v/ J+ d, Q) a  H4 j5 i

/ ]0 _$ ~8 ^2 {: a1 rset trade-record-all n-values people [(list (? + 1) 0 0)] ! a* V1 w& r' \" I- ^

" H" ~3 M" }+ J: W1 lset trade-record-current []6 }. e: O) p9 _* r# N  |6 M
set credibility-receive []
  W: l7 d1 G0 p* T7 Fset local-reputation 0.5
+ Y/ X2 ?! [# L( d& g. e' h% `# L' q6 uset neighbor-total 0
; Z: w9 Y" g' J8 i% |/ gset trade-times-total 0
5 O$ V6 F* V0 q: j+ s( P9 [: N8 L# Iset trade-money-total 0* }, ^/ V$ {1 Q8 ?
set customer nobody6 m/ [6 m9 h* i& l; Y
set credibility-all n-values people [creat-credibility]  d3 R  B5 t1 t2 _  G6 V2 ~
set credibility n-values people [-1]$ F! ^# `4 ?. N
get-color
) I0 e) n( Y0 G! h# r* G+ k
* l- ], M5 `) T" i
end9 B) {. g, k! Q" K

, P) @  f8 B9 Y' p( k! Zto-report creat-credibility( x. _" r, j6 F& t4 u5 `
report n-values people [0.5]* E2 B' j. w5 Z7 v
end' T, Q, s& i- c+ r3 D( o' C

, i2 P8 L6 q' T( Pto setup-plots; E! t7 b- a7 _; n6 Z3 d9 k
$ `$ s+ m. `- S0 D# s3 L
set xmax 30
/ W& a: G% I' a* D0 @- ~; b

; S/ x: Q- g5 i1 e" Pset ymax 1.0
8 c" _  ^9 W$ m- P, n. b; J1 v

5 m" {7 _, i4 Pclear-all-plots

! c9 T1 S5 ]* R4 p3 [2 y8 @5 k9 o1 H# Q  e1 u* B7 j! D
setup-plot1

; G" ~' o5 ~  O  D/ X% D* i+ I; S. r8 d5 I/ v7 A
setup-plot2
7 _2 ~: f( w) M$ D
, X( z8 ^/ A6 t
setup-plot3

- e9 S& C9 s- |* Rend; |9 F9 ?3 y+ R8 @, k
6 [3 F% k; W2 T# n0 m
;;run time procedures5 p; R9 H- f. q& V: p4 C9 q
0 e5 Z, i% r5 I# V( m
to go
' n" O: j/ z/ S, ^+ r! C
; ]1 A& I" I2 d0 pask turtles [do-business]
, a5 ]9 {' f8 g7 b$ [5 p
end0 ^+ P  s/ f! Z  Q# ]. x! N
  U3 v( R, t, f3 i% \2 Y
to do-business * C0 i* Q# k: O& v3 q( I# N) {% L

. I9 F8 B7 L7 [# N9 Q( s2 u. J- S2 v" ^
rt random 360

( d- q! m2 ~: Z+ x, H7 L5 X$ Q3 Y8 T7 H; V: D: j0 y, [
fd 1

0 I8 O; v. I. D; ?& Q* m8 L4 c. @: ^5 `! W, g
ifelse(other turtles-here != nobody)[

" M0 p0 [' F8 ^. q4 q4 X0 W3 y7 p6 m0 [& d( Y" S
set customer one-of other turtles-here
! K* f1 J; x( U, q- J( j  P

9 C9 X; G4 I5 F( Y( z- f$ v* I;; set [customer] of customer myself

% r/ @7 |& R8 S% i
7 K3 K* M' W8 D+ d# s( Y/ Yset [trade-record-one] of self item (([who] of customer) - 1)
9 v( J# p1 g# [/ R8 x8 Y- U[trade-record-all]of self
- T1 w$ G8 r6 c7 X1 k;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

3 s2 t$ l/ @" s) ^9 Y% j4 h* ]+ p/ x, X2 k9 W" g
set [trade-record-one] of customer item (([who] of self) - 1)
. _0 n" M% z. n4 M% s. C3 ^[trade-record-all]of customer

5 y) }0 P2 r0 z4 D$ r
4 P, @. C7 m# X  g% Qset [trade-record-one-len] of self length [trade-record-one] of self

6 k: H$ d3 N9 s
! }) G; ]# ^! J+ f( kset trade-record-current( list (timer) (random money-upper-limit))
+ K# s# h. f+ r8 M; U: M
* `/ c5 J8 E/ M" K& E$ e
ask self [do-trust]
; m, z; L2 \" j& e: S- x;;
先求ij的信任度
9 U! j6 G' }7 I( n8 q' B! a/ w  n/ Y: v  z
if ([trust-ok] of self)! q5 D6 f1 X$ r8 f$ _& c; \) t
;;
根据ij的信任度来决定是否与j进行交易[* C- Z3 T/ _- X
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself: o1 d" P8 r/ ]8 G1 J0 w  W
, R0 Q7 k1 K$ a6 p- o8 x% y9 ?
[
5 X3 N/ _) C$ F
$ ^. V$ l( R' A& E  {1 ^. X
do-trade
, U% u, S; p( i3 v" B& d( y9 ?2 t: g
- z' c" l" T+ F% R1 h! M* O9 i# J  K
update-credibility-ijl
* f1 Y( W3 q2 F0 u/ M" \
2 P% S+ b' d" d* H, Y6 r
update-credibility-list
% j9 p4 K' z+ o- X/ ~
1 \2 L, s' E0 E/ B' N

+ |, Z) b1 M0 |* h. cupdate-global-reputation-list
8 c7 y7 ]8 \% T5 o
1 e7 L3 E) a! }  V& U
poll-class

! n9 a" N. ~6 h( \
& `! Z* o3 U3 G& E3 Y  zget-color

# N" L/ P' k" q. I+ c! x; b5 J  n4 i" z( b% J; K7 Q! G
]]
3 }& a3 ?  m$ `. ~2 P# y6 S  X+ I& Z6 m# `9 _4 t3 c' n: w8 [
;;
如果所得的信任度满足条件,则进行交易
5 D' A  A* T3 X- e' A7 X/ `  b* \% v
[
" ?! s6 C  {4 u1 |* z. q
# ~4 p. N/ V: ^/ q
rt random 360

: K" \0 B4 T+ ?$ v* {: @1 G! v+ r* L6 Q! w* A1 H3 J
fd 1
. |3 U  T& k4 E5 w
8 r1 c' f& C7 K/ ~
]

8 K  {: X9 v' S# o+ a- l+ {5 y# F& \! |# a$ A. T
end
4 D# _6 t5 |5 t2 V% o# X3 u
6 R  H) k& y8 `/ V, h/ l
to do-trust
4 ?% j/ y; \( S) `set trust-ok False9 a$ F5 F+ L% y; J

) I0 v; N5 b' E% d( S7 [0 _" c
8 {( D" o7 w* ^; y1 B2 [' T/ T
let max-trade-times 0: G; j! |+ C7 c2 E/ }/ C
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
) J  |8 T; }' U" h) V! V/ Slet max-trade-money 00 \& D9 z/ Q8 K0 G: Q
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]8 k3 s  w7 u$ `, e
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
8 |* L! u8 l+ _: {9 D% C- K$ B
) W  m1 b2 G3 ]5 i
& I9 f: s& h4 p1 ]
get-global-proportion9 t; Q; l3 B% h9 \8 X2 A1 }: E
let trust-value
" D# @  }& B6 T9 \0 [: ylocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

0 B0 {. T$ P& mif(trust-value > trade-trust-value)6 T9 S: H/ o9 m" U1 q5 B0 Q
[set trust-ok true]6 ?# Q' |0 N4 v( ?  Z! q# j
end
  L$ C$ p$ s: U& F1 Z
. J) r! |4 h- Mto get-global-proportion8 d; `! q1 z6 c$ G: A7 `
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)1 @+ H  W3 I! L' b1 D. {7 F" h" ]
[set global-proportion 0]
2 D- Q( p7 R2 ~! A[let i 0. t6 W/ s! u' ?. y7 m, O
let sum-money 07 j$ ~) a2 |0 a
while[ i < people]
1 Q  v; u! O& E[: o$ c9 s; N) S7 a! k5 _
if( length (item i
# E/ h- a2 X, D: F[trade-record-all] of customer) > 3 )
9 L; _/ k* k2 j5 k6 p5 h/ E
[( {. o+ l* R; C5 Q0 ^5 {
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
. f3 U: D4 q- C& h]
5 \5 H8 G7 X3 O/ x1 m) b8 T+ G]" i3 j5 s: |7 p1 B
let j 0% S8 k* H7 X( ^  }# O
let note 05 M1 p1 C5 p2 _4 H8 L  Z1 E6 s+ B+ i
while[ j < people]9 f0 L: s# H$ h) F
[1 v4 a9 f0 j% t( {% P- A
if( length (item i
$ o2 u& b$ i# \0 L  }$ O1 b[trade-record-all] of customer) > 3 )

! I: r0 q: A6 }[
8 @" f3 H( R3 N9 z: j/ difelse(item ([who]of myself - 1) [credibility] of turtle j != -1)4 t$ ^- ]# p8 `5 M9 R% U) Z8 _
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
+ i3 |- |5 g0 T8 ]7 G[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]1 J9 L2 Q9 m/ k; k' F
]
) v6 u$ @/ S( {' ^) {]$ v' o- h1 o5 v( i
set global-proportion note
$ P, s& l7 |1 d. w9 ]* d]
% h( O# j3 I3 [- vend
0 l, B: L" {. I4 H0 ~$ o! J6 K) Z6 ]8 X1 F5 v  m7 m; x
to do-trade3 ?, F* t* i$ a" C9 _/ |
;;
这个过程实际上是给双方作出评价的过程8 x) [6 C% t& L; M
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 X* \+ B+ W: U4 W! f! o
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价1 y1 y! Y' H2 T1 e& l
set trade-record-current lput(timer) trade-record-current- e0 w4 X7 f# O. J
;;
评价时间' P, \* }& p9 M. j
ask myself [; ]3 `/ Z+ |) C! B
update-local-reputation
+ M4 `  ], y9 k% t, P' nset trade-record-current lput([local-reputation] of myself) trade-record-current
% I5 T% o  K3 w' I6 O3 ~3 H% T4 T]# m2 G- R1 k* u9 m5 k  @% w% o+ e
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself& G' K2 n, O% `
;;
将此次交易的记录加入到trade-record-one0 A3 T! v$ D( X+ Y
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)* j( N$ W$ b2 b! F, P; f5 {
let note (item 2 trade-record-current )
9 H4 e; v" F1 O+ s% K/ }/ o" uset trade-record-current
0 M2 l; ]' f0 ?7 f(replace-item 2 trade-record-current (item 3 trade-record-current))

8 T+ a. Y5 Z: v- O5 K! gset trade-record-current: j% Z9 ?+ }+ K8 I+ F7 R: m4 T  o
(replace-item 3 trade-record-current note): d+ `( L  J# V; z1 X  i
( j0 w. X0 D5 q" h; K8 W
4 o9 h/ k7 f& T2 [# b7 u- W2 T5 T; Z. X
ask customer [
- [# {5 T- l& A5 `# b) Qupdate-local-reputation
: F0 D, d/ [  W6 A' ~set trade-record-current& R! C$ T+ o/ N+ |4 x$ f$ f/ H( h
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ q; |; {3 ]; p8 M2 h3 I5 R' |$ E
]
+ q; D% ?, F3 g7 f+ A; @5 s) T: B$ f

$ i+ W9 W0 y+ m. W3 L' U, p. ^set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer" k1 u- k( [+ s
+ a" \" D, O# ^6 y8 S
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))) f! A) i! H/ X0 r+ u' ~1 Y
;;
将此次交易的记录加入到customertrade-record-all7 M5 f( ?4 C1 R. ~! N( B* |4 e4 \, G
end' L9 ~5 z3 D/ S, H3 y

- ^7 F  U( k+ f1 j7 Jto update-local-reputation" s0 f% X( \2 c
set [trade-record-one-len] of myself length [trade-record-one] of myself3 P! @, J5 j# q/ o" L3 N# V
; t+ U4 W' w0 w  ]: }& w* D

9 ?8 b, ?  c" e' t. {* T% }4 T$ q;;if [trade-record-one-len] of myself > 3
- q! R$ U" a0 u" f) P) w
update-neighbor-total
( u5 v& \, [! E; Y* P4 {3 m;;
更新邻居节点的数目,在此进行
' m& o; k( T& ?8 k3 S7 Jlet i 3
% q0 y  b# c7 G7 Wlet sum-time 08 O, S0 Z; K7 P- Q
while[i < [trade-record-one-len] of myself]
/ @/ \' p$ B7 x# P2 e( P[5 }6 W! s& ]4 `7 h' A4 v
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )+ w( ^% S: s4 \3 I
set i3 o+ Y: @1 P) x9 n! j
( i + 1)
( C1 l+ Y7 e. w; K
]
/ M; b. k6 x' z' Flet j 3% }( y# x, o9 W
let sum-money 09 R7 |9 K* `% _: ^6 B: G) C: M3 I
while[j < [trade-record-one-len] of myself]1 d/ D* w0 e7 p
[4 q3 `8 \6 u9 ]  p
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)( r" {; g, T# C6 v3 Y% Q4 _
set j
6 K1 S% i: I) n5 l2 ^  X2 C/ _7 b( j + 1)
1 _" j4 C4 o6 F6 W
]
0 A1 S- R4 C: z' M4 T/ g# Zlet k 3& B0 x5 c+ ^% N! i  p
let power 0
& p8 w7 }) d, z: V' l5 N& Wlet local 0
# K9 e& W: q( e" z3 ?. kwhile [k <[trade-record-one-len] of myself]0 \- D  Y* |) n  V7 J2 s
[' M7 |1 j5 P! s/ e# t
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)
! I2 y4 p2 J+ O/ \( f: r' q% T7 qset k (k + 1)
! l4 f1 E4 i6 v0 q* B* @]
$ X+ {7 p- @4 _& M1 Kset [local-reputation] of myself (local)) Y/ ?& f# h  t* e& j/ g$ l# Y
end
0 _* y* n& {! L4 E$ }7 `2 W8 C8 v' b" p- M) e. Z' Z
to update-neighbor-total
" J; l  q" E! n; I( B: |0 \0 U7 x: T; T
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
, ?, H$ n/ v- e% d" T% H4 {8 U+ [, F9 |# A) R
& ^9 d4 p: H% z) |: W
end+ M0 v( l7 a2 E2 v# G/ o" s& S1 h
( B! B) c4 b  b4 O
to update-credibility-ijl
) \" ^1 ^6 y  D) w2 v( Y+ K
, l- ~' W6 o! g) g1 \9 e;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。" B4 x8 _. Z2 H6 M/ Y+ j
let l 0( Z( W/ W+ q- U
while[ l < people ]" m6 G$ C0 B6 _3 e: A$ 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+ z2 Q! s0 j8 ?8 i, D, w
[
5 [6 j3 X% g0 V4 n6 N$ ilet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
- Z7 P' m4 V; e1 O: C+ A0 K7 \if (trade-record-one-j-l-len > 3)  U6 c' C7 _* 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
8 {5 [" V6 m2 hlet i 3( M0 b" O$ N4 P$ K3 i1 b) }
let sum-time 06 I; ?$ M" Q+ _- u) T
while[i < trade-record-one-len]
& U* `% }" D  }* r[
& S2 q, g# ]& h) n: G4 Gset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
0 l5 m& K6 ], A6 z+ B; z1 J* g. tset i
  O' O6 {4 k# H2 w( i + 1)
4 a: V  t. d: b
]
# c, s' |- R5 E; W2 nlet credibility-i-j-l 0
- C! |* x3 G, A0 K+ K, n;;i
评价(jjl的评价)( V5 z, c' j( K5 c1 U. N
let j 3
8 h6 t( Y) x" f: R. Rlet k 4
! o% w) k' k$ mwhile[j < trade-record-one-len]. U" b# Z" |# e. Q  M  `% m
[) v9 ~; d1 D: \0 E" V# Z. 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
2 O6 R! e3 s: L8 \, o; T+ I6 S6 Fset 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)' I# `) O4 {/ g# d" Z  v
set j
2 B: A( h4 ~3 E' r. Q+ M$ y( j + 1)

' c/ b+ x4 c$ v. U5 _& d! B]
- m" v1 _  V2 `) a1 S& ]4 }8 @# Gset [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 ))
; X* ^7 F! G# t5 I4 Q, Y' J! g8 y: E; ^5 K+ F
+ L* v7 v% ~/ n# K- \2 L5 d% Z; j
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))  p1 R5 m! b2 u9 q  L8 o
;;
及时更新il的评价质量的评价
1 h$ H* c. q( T9 R# a) l! [0 `set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
9 J3 \4 I+ Z  X2 e$ u' {set l (l + 1)
3 N% ^1 W3 T% n! w6 b1 G]6 Q7 X% R* z+ d5 m1 D( u
end
1 Q( J0 W& p( g% c: Z% C  W' ?3 q
$ X6 V: w, J3 L8 n" F- Uto update-credibility-list% Z5 n5 ~1 U2 i$ {3 L
let i 0
, y. r. H; E, Xwhile[i < people]
* G2 x+ J; G& N! m2 u[
. t! V0 _6 t0 L* ]: P" ?let j 0
5 q' D" g. s2 r: G" z: Slet note 0: V9 A$ ]* N/ L' x. M3 f
let k 0
7 D7 w4 w* ^6 F$ [4 f;;
计作出过评价的邻居节点的数目
7 q5 g+ r+ ~8 n, }1 {while[j < people]+ w2 w- t! h0 g8 Z6 n
[4 ^& f' q' G5 u  Q5 `1 N4 `  `
if (item j( [credibility] of turtle (i + 1)) != -1)
) R* B. `* F3 B;;
判断是否给本turtle的评价质量做出过评价的节点
7 R! J4 O+ r5 Y+ x5 I[set note (note + item j ([credibility]of turtle (i + 1))): m5 V. y6 S6 F% W
;;*(exp (-(people - 2)))/(people - 2))]
- o4 i, [- S! z* F
set k (k + 1)0 _3 }! G4 Y' U0 t' p9 V1 ?
]! U( [$ x+ n+ u- X9 Y: I
set j (j + 1)5 a, M! i' W/ T: |1 d  b5 Q$ o( A
]8 j3 P+ S# W, K: M8 `. B& G
set note (note *(exp (- (1 / k)))/ k)
( j, @. B: o# R* Bset credibility-list (replace-item i credibility-list note)
* `* n' N3 u% P- f% ~set i (i + 1)/ Y3 `( b4 o% u+ C/ v6 |0 w
]5 b: D9 f- y+ k2 t7 \4 x/ j
end+ h" d6 `' I" g5 X: r

- f  ]+ {4 v' X, U0 K) r  Nto update-global-reputation-list: s* o% D2 I1 U3 q0 p: }% @7 m
let j 04 @9 t/ ?; {; m. K
while[j < people]0 I6 F$ M7 l0 |! T% o6 e$ o
[
4 A5 l4 z) i3 k4 z0 `9 t# \( Slet new 0
2 s5 J8 n2 L; u2 z& H;;
暂存新的一个全局声誉
% r' @9 x" @4 d' }let i 0
. n* t3 z$ e, \let sum-money 0
9 b# t1 y( x. M# U! vlet credibility-money 0
$ J6 a' V$ E! e0 n. H6 M# I% iwhile [i < people]/ N- |5 e8 ^) D$ I  E9 A, l6 K
[7 g/ O" l: l9 C$ x
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))0 ~) F. y4 M" k5 W/ Y
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))6 f0 ^- @7 {2 U9 p
set i (i + 1); J& ?7 f8 e! ]3 N" d4 h0 I
]* h0 U* Y; A! g+ a* ?4 P
let k 0
3 K9 `) c% d5 u! o( Jlet new1 0' z& k9 |. I3 l+ o( z2 g+ Y
while [k < people]3 Q  T$ U; Q$ }6 L; O& b
[
, C6 Q8 @% |5 m4 l1 |set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)) e/ y: g1 G# J" n8 T# H! }2 j1 @* V
set k (k + 1)8 H1 G5 }" w. `9 N- j  V* X4 d
]
- M3 R# @- u* bset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 7 ?  w6 ]- R, [1 u0 s% _
set global-reputation-list (replace-item j global-reputation-list new)/ K. u5 S! n: N5 X; E2 k
set j (j + 1)
) l1 E8 Y. A7 a( `]
. D% G, X& H7 z& _# G6 S  n) {9 Cend7 T% T. x0 `6 [+ J+ V7 R

9 I- }. z$ ^* ?0 G9 j, A, u7 s; C8 k7 ^; w

  b! ^4 a* i9 `to get-color
6 Y( b$ ^$ [0 D! k/ @+ I8 f4 O. D1 [# A0 k/ y1 }* w
set color blue

- G1 o  ]; h+ \3 Q2 [) P# dend
) Q) M4 W/ U' }* o2 _3 \3 X  ?1 i0 V9 \8 r# a% r. \
to poll-class! L0 I  h* X9 F$ A
end
# R  _( E7 Z9 n" I
" u7 m( a9 N# ~! Qto setup-plot1/ E8 W/ g  d& P
4 B. A$ P8 Y( e1 o
set-current-plot "Trends-of-Local-reputation"
4 i* f2 I6 L* i$ g6 r0 o1 N

- A5 w( N: l2 ]) t3 t# f# n: Kset-plot-x-range 0 xmax

, D$ ^# u; t1 u8 w1 i0 P' P8 ^1 x6 `, W! {
set-plot-y-range 0.0 ymax
( z. }( X3 ]6 I; a
end( C5 v7 {- Q8 H

. J: @  o, Q; E7 Z7 L1 B! Gto setup-plot2
, `8 C5 ^- A) }9 O; E
3 `2 g' s/ U6 v  U2 ]' Y/ vset-current-plot "Trends-of-global-reputation"

" L# |1 A5 W' c0 E2 \  y7 a  m" C/ {" G4 L0 @0 i6 U! {) H
set-plot-x-range 0 xmax

: t, V( @  {( i) X
0 z7 K' c9 Z  d% N5 ^set-plot-y-range 0.0 ymax
  a  U" Y' D* F( L9 Z
end
7 g( @) p; r! E; d4 A- a
& [2 W5 \4 I: ?6 M. q- S" a+ ?to setup-plot3
9 N  E9 B- I# h( T9 q8 S0 x4 ^, m6 c7 H/ K, h+ J+ A2 I
set-current-plot "Trends-of-credibility"

7 \/ Z/ d* G. Z8 U0 G3 ~( ?9 Z: E3 p& X$ N
set-plot-x-range 0 xmax
" F, `: g1 a- e+ q% g

, f& H, w* ]+ w% M' zset-plot-y-range 0.0 ymax

2 ~. l0 P+ {- M5 J- w3 Pend: N) p5 g8 o2 C9 m) |

# Q; H$ l: o& t9 m  I! u1 ^to do-plots
" S$ [1 g$ @! q/ l5 pset-current-plot "Trends-of-Local-reputation"
) {9 T5 b5 \/ P7 m. ]" _set-current-plot-pen "Honest service"
% s, Y0 U' I- t3 g; ~7 yend
0 Q! U4 S/ x5 G/ ?4 M$ K/ z/ F6 e! C+ H& K
[ 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.
2 @3 x9 j( B1 I0 B7 w1 P# h1 t
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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