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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:$ y4 H" ~  _3 s: C. }  ?! b4 j
to do-business
+ W( n: @! k0 a( c8 o rt random 360
' y+ s7 p5 X/ Q7 b+ M4 t. q* Y fd 1' v' \$ E) d; b, l/ J5 X
ifelse(other turtles-here != nobody)[
. @1 W( ?0 S0 t9 ~3 k' k   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.
) P1 i  B) x; H5 e* u   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
  ^9 {" h# H1 s2 k   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer# T2 e( ?$ \) o4 k1 T* d
   set [trade-record-one-len] of self length [trade-record-one] of self3 k: n! G9 Y4 P! Y/ n# |2 x
   set trade-record-current( list (timer) (random money-upper-limit))+ _( a" f7 \9 a4 m9 f

7 `  G9 ?1 m4 Z) v: u" U! ^6 p: W/ u, c问题的提示如下:, b: `& D; h  i# M: r, T, x( N

' K' I0 R) J" T+ r, Z( j) W  s4 Verror while turtle 50 running OF in procedure DO-BUSINESS* N; D( @- w3 e3 w& y/ Y; r
  called by procedure GO( m/ o2 \8 q* u
OF expected input to be a turtle agentset or turtle but got NOBODY instead.! `4 f- M6 _5 B1 p! u* H
(halted running of go)
6 `* r8 v7 |# W+ y5 }' f, x, ?5 M6 O% y! t
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~~
' ]+ `5 H( V- ~4 h- X6 A0 H: |% ]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( e& Y$ {$ r2 b2 X! W- `
globals[
& j1 x' N; ~  Z3 w+ ?# x8 t& p$ b) Bxmax0 `/ h  N& G. g
ymax+ I# i) \! e6 j- q% K# F& T
global-reputation-list
' K% c. e/ M  M, C( |' c3 v: |- y/ g/ P/ ?$ O5 b
;;
每一个turtle的全局声誉都存在此LIST( v2 O! |+ k. t% o& D
credibility-list
5 h1 Y8 k( }. {;;
每一个turtle的评价可信度
3 p1 n" r9 S  Z5 G8 n8 z" H- u9 ahonest-service- F$ p! _$ |0 u* X/ y1 F4 p
unhonest-service
' [* J0 C9 C5 c; z8 P- t) @9 ]oscillation( h" c$ i2 H& B8 M
rand-dynamic
" b: G& l( n) R1 V]
( m' z7 y, y9 e! B1 R6 _4 Q) |
1 |/ a6 q: L/ }* \/ mturtles-own[
. X/ M0 D1 D) j5 P2 M7 Atrade-record-all
: {7 i0 ?$ T1 f6 G0 b; R/ m& [/ V% e;;a list of lists,
trade-record-one组成
3 U# s1 n# L# J  K4 qtrade-record-one* M! g) \4 b5 s; j0 y" n! P1 ?3 T
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录5 @7 G$ Q2 V6 u( t8 E& j  |% b

9 p( R) w1 p0 e) P7 e# @5 Y;;[
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]]) l& m9 v2 E1 v* Y% G4 m
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]! F& O, s6 x/ `% a8 x; Q4 }
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list4 \% [' A# R- G
neighbor-total9 R% Y7 }. ]' t- n
;;
记录该turtle的邻居节点的数目
2 u3 N1 z4 \+ p6 n- n% Mtrade-time/ `- C. X* E0 a! X
;;
当前发生交易的turtle的交易时间
0 y4 C9 O" h% g4 ?7 vappraise-give7 ^) X. P5 f1 c% O
;;
当前发生交易时给出的评价
+ l7 ~# `% D) Q: Wappraise-receive6 L) m$ [2 f( R  ?+ F0 K
;;
当前发生交易时收到的评价
6 v6 Z3 y, P5 t4 O# iappraise-time; S( a8 R! I' P: ^
;;
当前发生交易时的评价时间
: o3 z; F. s/ E: C# `/ Qlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
/ V: u& s- Q; U( V4 otrade-times-total
: o4 [" K0 [/ c* A" t9 @7 t1 D;;
与当前turtle的交易总次数& ?/ E# k& `. \/ |9 K: |
trade-money-total5 k. M4 r6 A+ L; A! }
;;
与当前turtle的交易总金额; H5 f( v" K# `! e3 S
local-reputation! B" ?3 l! H, ^/ v
global-reputation
* u, |0 t4 k/ b- J5 Q2 B5 a$ Icredibility
2 }7 b+ B) R  ?( M9 C/ z;;
评价可信度,每次交易后都需要更新4 e3 W# g! r- G# E! y2 ?# k* @' |1 U
credibility-all3 R' f2 ~5 A% I8 @" v7 @
;;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7 P- c/ S  w4 A4 S! a/ M( ]2 G. H
* X7 h: s+ ^; }" n6 _* c: H5 p) C" z, R/ B
;;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" Y  m$ }9 ~1 Xcredibility-one
2 Z* J- Y  Y0 ?. z3 N! T;;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) v- O2 r- @' \7 a% H  j( ^
global-proportion
! Q. z2 Q7 ?# o5 qcustomer" d' y' C( a7 D
customer-no
; n9 A. {2 B! ]2 Jtrust-ok
, m; R0 q4 @, ctrade-record-one-len;;trade-record-one的长度
: Q0 r. ^" P. T/ s]9 h. |4 T* f5 k
' }* q6 \2 K& F  I7 o# b4 s, y
;;setup procedure% L* k- ~0 u4 B% r9 Q! m5 H
- C" G' t% r& N4 G9 y* w/ ^
to setup
% c# E# z5 k+ m/ S, E8 }6 q5 O, l4 a+ \* S- I' ]7 s
ca

- r6 ]' ~$ C. _* J0 }/ V: E/ N  E6 N0 x3 N# j
initialize-settings
+ X4 J: T7 w& U$ V9 g+ e" a

* F+ N4 K2 z( }/ C$ L# i9 Qcrt people [setup-turtles]
. f7 p/ h1 l9 k* {
! a* M6 O: _0 Q6 F
reset-timer
# m) X; m0 ?9 u

# j: X) S5 s5 F# E9 W% h+ f6 lpoll-class
$ M  Y; c: r. u5 R9 l
& v! i  ~4 J+ l3 ]1 q) I) s# u  n
setup-plots

+ F" r5 h9 S4 J1 P) h; w. D  I
, U# V$ N  f4 vdo-plots
( N6 ^; p' ?6 f- ]# ]
end
3 v' Y. M! Y9 F, K* r/ r- K) }+ \( p/ ^: y" F6 `" [
to initialize-settings
6 v9 ?" a* A8 m! w& P; E
& L/ K" _; k( g* lset global-reputation-list []
: B8 |+ F8 ~" P2 [: F3 e: z

4 @; u: e( L: K& H  v& vset credibility-list n-values people [0.5]
/ E+ {# B" |8 Z9 c' p
6 o$ J3 @2 y7 k. h& L7 ^: c
set honest-service 0

1 C' Z/ [6 e. N/ C1 }# Y% ^$ q4 [" y" W+ ?) j. ]" R  X- n- S
set unhonest-service 0
; `2 l( s0 J1 L2 |: g7 v0 y) p
; b: H9 O9 O, l: R" j
set oscillation 0

, M! o  T8 n/ Y$ }# s
" @5 B! w0 f+ }* xset rand-dynamic 0

& W! X: S2 G, }' \1 j2 h( Hend
. x, `4 a0 g$ f7 ^; X0 b9 ~' }2 Z
0 `# B6 j1 |  h3 m; Gto setup-turtles
9 [% m4 D1 M9 n' j5 T9 eset shape "person"9 a! E6 O& v% F2 S( c
setxy random-xcor random-ycor# D9 @- b8 H3 R
set trade-record-one []
( Y; w5 N0 K# ?
9 x' H3 l8 X" C& C
set trade-record-all n-values people [(list (? + 1) 0 0)] . @" i1 P& e+ s* t: }% A  Q

1 g) n# D6 {: {/ nset trade-record-current []8 I8 C" T( m* g: D. i* s5 e
set credibility-receive []
: |7 U" L: H1 u9 N; ^set local-reputation 0.5. s, d% t5 R9 ]  o& V" n) P8 u
set neighbor-total 03 O: N  C" p- P: [4 E
set trade-times-total 0
9 w* a6 A0 e, o. Qset trade-money-total 0
1 N, I% |$ X3 o- _set customer nobody* ~! T7 M9 W6 F* p7 a7 ]
set credibility-all n-values people [creat-credibility]& f$ q$ v7 x6 x& F
set credibility n-values people [-1]: N( r1 n! F/ A
get-color. t# {* A) H! _. @% w! f
2 }3 g) d/ h; h! T' \. g4 h
end) F# O+ E7 \7 O+ L* O
- i3 P! \1 J- Z4 J1 `) k3 J
to-report creat-credibility3 c9 y+ j4 H" z0 m7 P5 I
report n-values people [0.5]/ Q2 X7 D$ H& z- p' S: I4 O
end
6 d+ ?/ J0 W/ l0 @! q
7 A5 y. W' f  ^  V, Wto setup-plots0 d* U6 C: X8 j( Q; G- d) ], s
( a8 \+ N1 }  z
set xmax 30
& b) E' v9 _4 R3 k$ t
; M! [: ~. z1 k& Z  @4 E
set ymax 1.0
* p. p; b+ Q# B  O9 D$ w) M

) G7 V. p1 t1 ~clear-all-plots
0 ^, K7 U- g( w4 D' C

4 p: N% ^' q- usetup-plot1
! g, l: a  X4 ]4 K% Q

1 t9 ^- y* f6 _0 ?& Nsetup-plot2
8 ^2 z; W4 I% f; ?" ?

3 W2 L5 p2 V5 Hsetup-plot3

: h- M3 [$ t- [1 b8 y0 Aend
0 g* j! ]6 u7 w; F6 x6 `" p) u8 @( _# s# f; F4 [
;;run time procedures
& c, R$ \) C" X9 I
$ @$ t* e! i2 S! Z2 C5 ?& a2 bto go# r) Y) p) Y- Q+ [: ?

7 Q5 c% [0 Y6 c! d% d, u9 m$ Sask turtles [do-business]
# \; y$ b0 H( f
end' Q6 m/ q' |* e. G
" u, _1 u6 Q( q; ^* M1 m6 M2 V
to do-business
# G: {9 Y( M* o9 H  f$ n
' b' E! N) q; v* V2 V6 Z2 }

- [( K3 v" e9 d; U# |, `. Lrt random 360
; ^1 H. N  D' F4 w5 ~- G2 o$ @
9 M) g- U8 O) M5 @' u
fd 1
$ U5 y; F5 d: S5 M
5 c9 m4 O6 S% o
ifelse(other turtles-here != nobody)[

' U1 ]0 O2 A7 m3 J7 c+ `; _) E' {, j5 }1 z) e
set customer one-of other turtles-here
$ P. ]& r; F5 G- h

' K" L/ b1 R7 s6 v; C- N;; set [customer] of customer myself
% d4 U, k* ~$ s  f3 G  |6 ~

: ~0 G+ ~$ x1 ^7 z7 Yset [trade-record-one] of self item (([who] of customer) - 1)
% u0 q. \) ~; S: v[trade-record-all]of self
/ B4 T/ Q+ ?9 i5 z9 O, U1 ];;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
) t0 X) ?* \4 h* @7 z, A8 J  {
+ b7 {- M+ v5 M7 b1 C4 W+ E: D; }
set [trade-record-one] of customer item (([who] of self) - 1)7 H+ Y, e. u8 R/ ?* [- i
[trade-record-all]of customer

* N& y6 G8 w$ K$ N, S" C( o
# ^3 m! o; V2 n! Z1 ?: D. bset [trade-record-one-len] of self length [trade-record-one] of self
3 f" [+ v- Z0 M3 b  ^8 l
/ v% f, L1 m0 U+ u, J( V! _  x
set trade-record-current( list (timer) (random money-upper-limit))
, M% N8 B9 M6 S
/ b* x) s$ u" G7 S
ask self [do-trust]7 J' x& G# i9 J/ k! N
;;
先求ij的信任度
4 p2 W- T4 V" l* E% r, J
* R  N/ Y$ d) C) I  tif ([trust-ok] of self)  h2 V4 \$ X* v* G; g( ^& H! g3 [
;;
根据ij的信任度来决定是否与j进行交易[/ j) \" {" |3 \: o
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself  u* W! f# H) F; C& O' L

. |! M8 {1 R" T5 W4 s: J3 T5 n[
$ u2 I. p- m; @; b6 g4 |+ n

$ I5 w: o' C* [0 q' w9 m+ Rdo-trade

1 m8 y" ]4 O2 E6 k; v: |- ?
& F0 ~% }5 v0 K( jupdate-credibility-ijl

' G8 b2 T( R2 k4 M) a# N3 U  S0 v8 R* d
update-credibility-list% E  X' }2 a# L" B, m' W
8 |1 d: k! e' \. v5 G; \& t5 y

9 v3 t" e$ s& t! X. Oupdate-global-reputation-list
; B8 W& T8 g4 M1 q9 z

: t3 T( N" P8 F$ Bpoll-class
8 E( ]# v& _+ `) P

6 o  K6 D" h9 ?5 q8 l% y( Uget-color

4 Z) k, o- e  R' Y. K
9 p& t) D% a1 m& a* S1 }. g' P]]
" J0 p* V" o! x9 m8 l' E
( B$ G2 _' ?1 N( A+ v5 M- w/ ?6 j. a! M;;
如果所得的信任度满足条件,则进行交易
: V2 y9 R+ L; L4 F% K" z
) s3 s9 m# p9 F0 B' K* R[

, z' f. [8 t1 R; w  N
7 K6 E0 i0 f+ L% a+ [3 o& Prt random 360
5 ^# @. k) v6 H: d
9 f  n, _) B' i0 i4 P5 W* ?
fd 1

6 N, j  B5 O: h& X5 ~( G+ w& L8 k0 j1 X8 P9 ?" z3 U
]
+ d, c7 P" k3 j0 D

$ a: b. ?& U* rend
9 W9 ]6 U& G1 ?0 a' ]4 K! E, |

+ s9 I, x! C! gto do-trust
) q# j& Z" x; ]3 z& x0 a+ ]set trust-ok False
$ b& f2 ^/ K9 t( u8 G, I5 q1 y. I. @

. h+ s4 T! A1 n; J: U, u7 V- Flet max-trade-times 0; r; N* y) q+ d' A( o
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]5 ?; Y: P/ ^2 Q
let max-trade-money 0
; o. _0 }! A+ `* Y; O# Q+ Qforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]0 X  c+ d+ N; @3 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))) ?; ?3 M4 h0 [( j7 M
& x8 B' _1 ^- E2 Z( h
% [+ Q2 _) ]. H6 A5 k$ w& ^
get-global-proportion
/ }# ~5 X$ A5 C# ^let trust-value/ C" ?9 j( p. p
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)
! o8 L0 B: x0 k, T0 u4 @( H  u
if(trust-value > trade-trust-value)
' Y9 V4 }. e' J* _  R! K[set trust-ok true]
2 x3 A/ v' ^4 L8 hend
+ [$ J' Q1 d% B; P' ^+ [$ @0 y/ P7 i4 k4 M1 w, B2 y
to get-global-proportion
4 q5 y  Y- F  Tifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
1 l+ `: C& b8 \2 a[set global-proportion 0]! g7 t9 j% R+ W
[let i 0
  s* r! }3 j; F. J& Olet sum-money 0, l' O+ u# |0 |# E
while[ i < people]. E0 X' B2 K0 B8 Y  U
[
' }9 b! P( _0 P9 W4 ?6 k- m6 k* Lif( length (item i
2 S. K* @8 C# r. L& Y8 p+ U[trade-record-all] of customer) > 3 )
! L* c& B$ U$ z5 |8 q- P1 ^- b4 E
[
/ D% M1 c- m5 y6 f" ?7 ~set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 t6 X" K3 D6 y9 q5 f( n. ]]1 l8 \. e) N) `6 e
]$ X" f. p* s/ t! U! x* M# H
let j 0
- s  [2 G2 J2 m3 glet note 0
, X3 f4 u$ Z. l+ k4 _' u5 Q0 z3 ?while[ j < people]- ^6 f2 w+ h( Z* ~* N7 r- u1 E% q$ ]
[4 Q; `( M8 ]% d9 Y- |' T# e
if( length (item i
" r, r1 Y* |& u  c* _, d1 e[trade-record-all] of customer) > 3 )
$ U- [" R: I# I2 O4 J0 i
[# s7 u8 s# Q; X. \
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)  I/ J0 |" K8 [; w7 d
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]" X5 s- z4 W) F1 O$ c) D
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]& {- O8 u& \' q5 A& X$ z! {
]+ d1 {8 o" L+ u8 y9 p; N
]7 k8 _8 ?+ H( V4 @" x. _5 \* Z8 c
set global-proportion note
! I/ q0 |: W" I% h, {% I0 c]- s! A' o+ J$ M  r: g
end
: `7 G6 `% d5 z  l  z. F5 L4 N8 K2 `
to do-trade6 }+ @+ G; L$ y9 e7 ^
;;
这个过程实际上是给双方作出评价的过程
1 r! {% n9 p  O9 mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价( G, [7 n, P7 ?3 r$ l* d, `
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
1 |; ?, t1 m) w4 c" J) Hset trade-record-current lput(timer) trade-record-current, ?) H! l: I$ m' \6 D5 M6 w
;;
评价时间/ \: b5 N" X9 P
ask myself [
) v+ D' V/ x% }* R" S0 Eupdate-local-reputation
/ W; c% K; t) f* r7 Pset trade-record-current lput([local-reputation] of myself) trade-record-current
8 ?5 p9 T  O/ c7 I- J8 Q]
, `3 t; A4 q6 \4 u; Wset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
0 M0 h' w& M0 q3 ]5 X;;
将此次交易的记录加入到trade-record-one4 {. p  U: f: f& C$ a
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 p! P) E  W3 P' q6 Z% Glet note (item 2 trade-record-current )0 Z. b6 ]( ?5 P7 }7 m5 n$ `
set trade-record-current2 X0 |1 T9 t! I6 j! x8 I/ E
(replace-item 2 trade-record-current (item 3 trade-record-current))
- q+ }: n: ^% l. L
set trade-record-current
" |1 a$ [) C7 r(replace-item 3 trade-record-current note)
. S, A$ W8 N6 c1 u4 I1 D( F$ t) J0 @0 p  [) `$ f% Y

- P" M2 j& s" N5 e* b0 nask customer [% w% `1 ^: i( x( f% t
update-local-reputation
0 r- Z! H5 W! l0 c9 R3 Aset trade-record-current3 Q1 x  L" V' }  u* }6 i4 ?$ T* b
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
7 b) v1 D& G6 Q
]9 Z" ]- O& X+ w# T- {- s$ v6 F
- d5 ]' K; q. e& W

# o; c( u. [+ _6 G1 F" Lset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
5 B& B' M* y* o% q
8 i) P; C/ l* O; g
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! N: ~: }# {0 E  p! e& e
;;
将此次交易的记录加入到customertrade-record-all
7 R/ v. I) p1 G1 e3 O5 ?3 Hend
+ \* h$ N" i8 {. h5 n! j/ K, J
3 U9 x/ X$ @0 E" t1 f6 i1 w) `to update-local-reputation
1 i  {3 J" i  [$ oset [trade-record-one-len] of myself length [trade-record-one] of myself4 J' @( [0 x% Z( ?8 l; }3 k) Q
+ a  a+ r* e  P5 ?" H
  v* E1 u4 L0 C  Y$ l
;;if [trade-record-one-len] of myself > 3
+ v' u: d( x8 F
update-neighbor-total* S1 c2 s( m" Q' C+ \  s6 K% b
;;
更新邻居节点的数目,在此进行1 B2 N. z5 e. u$ ?$ Y9 E
let i 3
9 t+ X3 J: ~3 K) M- mlet sum-time 0
2 ]$ u" x7 o8 Y& J) B, w) [while[i < [trade-record-one-len] of myself]$ M. X; C/ O8 }* v6 y
[
4 i, `% i0 w8 g3 |2 n/ g0 d* cset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )# ~  K6 t. m2 `* i% f
set i3 j, j- e2 N' ~
( i + 1)

& @) n0 r" ~+ J! ?# w. f+ {]9 k4 z8 h8 q; T5 }* C$ l3 j
let j 3
% K4 z+ [! v& a. Nlet sum-money 0
8 H. _2 T' b: g& G, \while[j < [trade-record-one-len] of myself]
$ p. V0 J# H  V/ p[
7 g$ {" B# x- l% Z  h2 N$ e4 P, aset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)+ o0 n/ \( [3 L' c$ m7 o! ]" i. s
set j2 n7 _" |+ G0 S! w- u
( j + 1)

9 D6 F+ h7 J1 ^0 B. q& m. u& O]
, P1 ^  o! s5 o: }. tlet k 37 n( C* `' S& U( `; z- ?* M
let power 0) I( i" Z& Q: c
let local 0
2 I( L. R- V9 k9 Owhile [k <[trade-record-one-len] of myself]
  s! G) r; h. p3 L( \[
( `2 \9 p% {( B( mset 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 M$ q7 p- Z5 p7 a+ fset k (k + 1)* X' L) Q: M- U0 J( B* X: U
]
0 n' T+ ?- T+ D# w* Jset [local-reputation] of myself (local)
. X1 o! S1 e& f/ @( s  Yend
" E) @) X  c  _( Z5 f( I" i, h  q! k- A4 p  D
to update-neighbor-total
& I  s6 y" G& C" g) S* k3 n' i/ O  [
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]& l; F$ F' n( o) X; z2 O/ i
- w1 [$ {' v3 x; C) O' d8 L

( L- O( i% F6 K5 `% F8 E  Yend
9 V$ V$ ^. F/ X/ }4 ~1 Y4 y# W3 t7 j/ l  W0 y
to update-credibility-ijl
6 ~5 {, J' O" r9 \9 {. r4 y$ i# j+ |. Y3 g0 O
;;
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。# L" t+ h# c: c& f( x9 M
let l 0
9 O! k9 p" a/ i0 B- twhile[ l < people ]
2 F9 Z8 H" z2 e5 k$ L; a, W;;
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$ r7 h2 @) z9 L1 `; v2 a
[$ L7 w. f( ^+ Y8 e7 S3 ?
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)0 a" D# {0 `! E2 G$ d
if (trade-record-one-j-l-len > 3)
* l1 c/ H  o3 n: ?: ?[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
' q+ J6 z# U7 B; t+ f, U! _* g' llet i 3
2 C7 R0 v0 X9 r: z8 C: j7 Klet sum-time 0: Q# v) J2 y$ C/ L0 `8 _
while[i < trade-record-one-len]
2 W( K% C+ F$ S% a  Y/ R7 G2 Z1 [[
, M3 E9 J1 l+ z" _) xset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
, u8 {8 C( g4 Y1 ?' f: v8 jset i3 O* n; R; m4 M$ O; L
( i + 1)

" m, u6 _- b: \7 U  f]
9 m; g: y- E* y. v) [- Alet credibility-i-j-l 0
- _" S, B7 d  U; R1 R* q8 X;;i
评价(jjl的评价)
+ I" \( m' l( M& G! u, b* Alet j 3( E6 `* i2 ]0 f
let k 4: b/ v" q; V3 N- |* g/ E
while[j < trade-record-one-len]
+ Y* `* U" c4 ]# {/ ][
$ D- `/ `& s# Awhile [((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
4 e) B8 Q( s8 Tset 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). j- q& D8 B" v- k
set j  G8 P# L$ {; E, x( Y) z5 U
( j + 1)

  |# z+ Z2 d- p& o. \- f]
9 b+ u. E! p. o: W& @4 R6 O/ |# U" wset [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 ))3 y7 _, v+ M2 I4 d; W% n

0 k+ \9 O; `) ]  X: C3 N( |& W

3 [5 H+ }# D2 \8 _5 E* `let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
. M1 h0 t# z- W, P  W8 r) i;;
及时更新il的评价质量的评价& x8 [* F0 Z9 ]  K, m3 }8 }0 D
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
: f- d' B6 x( x4 Qset l (l + 1), N- l, Z; [9 p' B7 M& P: G
]+ \# x/ U: i6 A, I
end1 ?' H; z3 Q/ }$ I
8 ^3 _4 K% F$ E4 z$ n9 c
to update-credibility-list* Y% \! a% L) W  O+ T- C4 |
let i 0
- Z. K( s1 J1 x+ Swhile[i < people]
. K! I. n3 y& O2 o" U% O- \3 `. y[) i: X2 w6 E; F5 l. t" W$ Q; v- n
let j 0
2 U7 F# O! O# t8 ?1 P' dlet note 0' _  h- M+ e' u, d4 q
let k 0
! O: b4 {& t3 |; p2 h7 P; q+ u;;
计作出过评价的邻居节点的数目
# B7 B2 `: S3 j7 Nwhile[j < people]# ?% C) a* M+ D0 L: w
[' c1 R+ ]# K+ p6 S* O
if (item j( [credibility] of turtle (i + 1)) != -1)
7 L, ?; y+ Z! `) }2 O4 O;;
判断是否给本turtle的评价质量做出过评价的节点
7 S; ]6 z; f3 S6 S  {[set note (note + item j ([credibility]of turtle (i + 1)))
1 [2 r# q/ C2 A;;*(exp (-(people - 2)))/(people - 2))]
0 J9 I* r4 z3 O5 W3 v0 h4 g: i
set k (k + 1)' |$ ]* w& w6 b1 r+ F
]4 D4 s/ n8 w9 n
set j (j + 1)
3 z" x$ Y$ b: s( {& i]
+ L' n5 O; K9 P, gset note (note *(exp (- (1 / k)))/ k)2 A5 y  Y' Z% ^
set credibility-list (replace-item i credibility-list note)/ e/ C5 v/ W  Y5 U  G
set i (i + 1)! ^( Y% V: |# w. a& X6 ~
]( f0 U0 d. ]0 ~+ A( L4 c' N' e9 Y
end4 F' ]' w$ r+ c
# P2 y+ i" E1 b: J2 c! x- T! I' N% B9 C
to update-global-reputation-list
" _- M/ @% k3 U2 [* Blet j 00 [/ A1 T" T. `* i3 L
while[j < people]
) Y2 [' a* n8 J& ?[
$ D6 }+ a& M9 C8 alet new 0
* B" v" e7 k1 u) X/ E: r! V;;
暂存新的一个全局声誉
# A# M8 {) Z! t# |$ Q0 m3 Ylet i 0
0 z/ s) a$ X# I4 {2 }let sum-money 0
$ n1 ~' o7 g# O% `9 a' A/ s+ E# E" plet credibility-money 0
5 w3 F  }% s9 J- u% ]/ m9 i. Bwhile [i < people]# z. g/ o5 z, }) W4 p2 S' \* n
[; B* ?$ I( w/ j
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))1 x; u" k# s) x  i1 F
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
5 @5 s) N- j2 s+ ^9 d: }- bset i (i + 1)
- H$ C  \, T7 l+ h( @]$ u% S$ i3 u, m( |/ }3 N8 l  D1 O/ x
let k 0
, D' M; e: b: s1 g3 Qlet new1 0
$ W2 y9 }. o' t: P/ t/ \( |while [k < people]2 f( r  \7 X+ E) Q
[
1 p& C( N$ Y$ L8 [- J7 vset 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)
( t9 Q# P- V; D! s. I  H+ Z% }' Jset k (k + 1)
! P6 ~% ?3 f: C6 p, g]
. _8 ~8 [7 n; n. yset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
' n  p2 d4 K% mset global-reputation-list (replace-item j global-reputation-list new)
7 ^: a1 k/ Z+ E% e8 Tset j (j + 1)5 }  d7 e3 U% i1 P
]& e7 Y! I. Q7 t8 r
end/ j1 S& }; R) f$ Z* c! q! a
4 ?" @5 N; N4 ^) H( I6 [( C$ W

' q- I6 f% R( Z9 p2 x0 h; a" s1 Y5 M# e/ f! M$ ~- g
to get-color
2 X, X0 V1 t- k! p) ~& P
6 s' e3 U% b& C7 xset color blue

. U  ~. ?. e0 }  l( }4 u. h: gend7 D9 K* a% b8 g  m3 p1 \3 d  u
4 `6 Y2 G9 Y+ R# V% [# m3 Q
to poll-class
. s% C$ a5 S2 I, d2 b  j" kend
4 L( H4 n+ N9 n% S* ?- c8 u8 ]6 ?2 h. ?  d( |- H/ W- e) L
to setup-plot1) R+ y. C8 `) W: @. E
1 j$ f! h7 t0 u% X
set-current-plot "Trends-of-Local-reputation"

3 A* q9 H4 U2 e3 v! \& l8 x. z: ~/ R* W! T: w9 a
set-plot-x-range 0 xmax
, |" g- q! C& y8 v6 |
1 e- w+ U9 e4 ^7 d3 i( M. b
set-plot-y-range 0.0 ymax
8 Q7 u& U' u9 [  D! w* b2 x0 T
end
! A& z9 L* Z. a
2 z/ v3 v+ ~) {% ]' [to setup-plot2
3 S" I, ?5 k# B& @9 P
8 A7 a# A: ?1 s1 U; h& U8 |" P" Fset-current-plot "Trends-of-global-reputation"

& F  ~4 n' r8 ]) B+ y; k& e
( h9 I- [+ J8 r; X+ lset-plot-x-range 0 xmax
$ C$ e8 c- |! N8 O* F' r* o: f

$ c- b$ J% f# D! N/ Nset-plot-y-range 0.0 ymax

+ }4 e+ H4 J3 w; Q; m% @$ m' g  S3 iend, V2 i' P* N1 o/ w, N+ a' p

$ c' ?! P/ L, N1 Ato setup-plot31 t" k) S, v4 K) G: N/ F% e
3 \) D' M7 c8 @2 g! X/ _
set-current-plot "Trends-of-credibility"

9 v1 X; X: s  H* W/ `
, p) ?" n# m; i2 h) xset-plot-x-range 0 xmax
# C" o$ h) P9 T

8 t+ l$ y1 L9 I2 @( n/ z. Rset-plot-y-range 0.0 ymax
7 F; J% M, }' D  u. V6 L
end
0 R1 g1 H* ?! w- z! Q
& O4 z7 O7 p0 W8 e$ `$ {1 O, H8 Zto do-plots
: V7 a( l/ j5 kset-current-plot "Trends-of-Local-reputation"9 A- K$ s+ y( Q  v/ E
set-current-plot-pen "Honest service"' v- z7 E5 x3 B6 x/ X
end: A, Y5 x" d+ |9 ~
" _: k* ~9 E5 `( L* `: O
[ 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.
7 u$ P5 \& R7 \' M5 B3 f7 ?! M6 k$ P: o, K: k9 r& O
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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