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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:
* u: a' d! K7 o; h$ ^* g- Sto do-business
; |; C5 F. v7 a5 W& v2 E/ t rt random 360
1 }. k7 b6 Y. y, M/ b! P fd 14 ]% y+ u- A6 O: S1 U
ifelse(other turtles-here != nobody)[
" D" B! p0 V3 S( _! g1 X   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.
9 T. {  M' y6 V+ j6 l3 t4 y, D% |, E   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
+ ]0 l4 b6 k! B0 n  R: \$ u   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer' G6 y( A+ I' b2 x3 e5 b
   set [trade-record-one-len] of self length [trade-record-one] of self% r& F! m  T; E% o
   set trade-record-current( list (timer) (random money-upper-limit))
/ M, a0 \! z) e  [! X: K2 h9 x7 Y  m  x. j9 X! Q- p2 X
问题的提示如下:
) ~; M6 u3 o. [
5 l" Q. r9 E7 n! @9 M$ Lerror while turtle 50 running OF in procedure DO-BUSINESS
8 V2 f& F6 }2 ]' E  called by procedure GO
, Q# R0 e9 \7 M2 VOF expected input to be a turtle agentset or turtle but got NOBODY instead.) v* _, p2 m' O! z' L; ^
(halted running of go)
7 U( m; f9 Z8 h' C( {4 q
6 O0 I* n0 V3 {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 [4 |# h! f2 T8 G
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6 i. v) i- r9 T" d
globals[% }$ \9 h9 ?) y7 Y5 @0 _
xmax
$ `7 j' {* m9 L/ Aymax8 x# ^: h7 j; {* o
global-reputation-list: T* i% o' l# L* h' ?

$ ]0 w( x" P" m( {( I) ^;;
每一个turtle的全局声誉都存在此LIST
" p3 B, k. ?4 G9 c5 _* \$ o0 ucredibility-list
7 `! u' M: |# M* k2 Q6 ^8 E7 U;;
每一个turtle的评价可信度; \; L% \+ p! {/ \
honest-service# X& H, Q& I  j. h  T
unhonest-service. f8 S: v. Q0 E" V% B
oscillation7 A  }. R  H  P& p1 C# s$ E
rand-dynamic
8 k6 B; G+ {2 \2 r& u]! K/ O" h  S% V1 K. |! O

. s0 q! o9 n! J  Q' Q, Uturtles-own[  V( x/ w" o3 \7 h' _
trade-record-all7 r9 B: ^0 R! L/ P" {0 j3 N
;;a list of lists,
trade-record-one组成
5 k; R8 G/ N: ~9 Atrade-record-one9 k0 X5 g. U' y% ?) D* |2 l* D
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录" P# o. O- K0 t1 h5 l
, D  o  B3 d! ~- U+ z
;;[
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]]
- D7 }4 x3 P, ]1 s* `8 J6 C( Y$ Y! Ytrade-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]2 y" b# k7 \/ Z1 a
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
& t  ?! ?- x& g  G/ x: K  ~neighbor-total
, s; B+ M. U5 e: d, m1 G( x  u3 r;;
记录该turtle的邻居节点的数目
5 h  ~( X! ^$ t' F* J9 m3 M/ ctrade-time; o2 H; O8 A! W4 C9 h
;;
当前发生交易的turtle的交易时间
0 R2 s  u# ?: u. S( wappraise-give
8 [; `; b6 W) L. g4 W;;
当前发生交易时给出的评价
- B3 ?* N9 _6 n0 y4 Jappraise-receive
" u+ z2 E: w7 m1 D2 h( N# D* d9 o;;
当前发生交易时收到的评价1 X. b' t# ]3 l  _
appraise-time( |8 F# F+ v0 m, Z& o0 ^6 N
;;
当前发生交易时的评价时间
+ I( c4 m4 P' u  i: Llocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
& S0 {* D: M: ^# h5 t/ {trade-times-total
: S1 i/ o5 q8 @$ A;;
与当前turtle的交易总次数0 J- r: q* N' A' s
trade-money-total1 H3 |4 B& q; J7 G
;;
与当前turtle的交易总金额7 S' ~% h$ M) o  p5 b7 M
local-reputation% p7 b8 x( l& a, `
global-reputation, ]  C/ @% T# M6 T3 l
credibility
+ r6 \# k( G/ y0 s9 A& k;;
评价可信度,每次交易后都需要更新1 H% u6 J" f) C- S# h0 l4 D) ^$ e
credibility-all& j& E  i3 I; g- f  @/ w" I# _
;;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 E1 t( W; W" O

4 W7 `+ `5 d; D; w;;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
: l$ ]6 {5 W2 b6 G) Z: ~credibility-one
" S& a/ O; a) ]9 Y/ E. g- l9 k6 r;;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
7 f7 d" z0 ?- }6 y( {4 {3 V' ?global-proportion0 s+ C' Z1 l7 [  w% l
customer; R8 i3 o/ T- O7 Q4 v. |
customer-no3 ~: n2 N' }* j: M& \4 X
trust-ok
; I# W  X7 M9 B: J6 ltrade-record-one-len;;trade-record-one的长度
3 l* \+ m; m2 n" l]
3 t; a$ O" a+ D6 u  u# q# e) Y! b# x# |* ?
;;setup procedure
$ ]0 b1 O& l% @, w8 B- k6 {. D4 H4 H( p7 {% \
to setup3 L0 ~5 H, n$ q; w. }# K( c
& d" u& p3 Y- s
ca

6 @# k  u2 d6 W! f1 q1 ^0 [. ?! N3 m' X& G. q
initialize-settings
, E; O8 S: M2 K  p5 E

; N. d  a1 |; J" {# R9 lcrt people [setup-turtles]
) x' I( f' L& t0 l* T

& i  q8 L% r% u; j2 Oreset-timer

$ y& Y; ~/ f; y: a8 ?. e8 l4 Z* B. G  K: `' v5 F+ ]
poll-class
+ a5 }! L& m  ]1 q7 f( l2 d; m

$ I/ W4 K3 w: e8 [setup-plots
/ o+ c- c$ J/ L+ ~4 B
0 ~: _: p- a, H) p
do-plots

$ V8 u! p% ]' Zend
; j; K, N8 }, a$ G/ C: t3 T6 q3 a# F& h; c  F7 V
to initialize-settings
: Y0 F% `! G# _/ ]# g
  m. @# e5 O' @( \2 b' w7 Aset global-reputation-list []

/ a. n/ f( t, k0 i4 r! n8 z3 \6 n1 @9 Q. e9 b( c8 q- l& ~6 W
set credibility-list n-values people [0.5]

3 j' W% ^, {; P/ ^6 D
7 O+ |9 s, r- T* C  t- m, y- s0 k8 N5 vset honest-service 0
+ F, ]. N9 x/ O
9 Z4 {! U: M4 s4 b' ^& s
set unhonest-service 0
" z. m- m0 o9 Q4 F/ H0 i
1 c1 c1 A3 B% v& v
set oscillation 0

1 c1 W( S7 O" c) A$ s5 I+ ^! @
4 O- |8 _( V+ q# S4 Mset rand-dynamic 0

2 C' @* g6 ]3 `7 @# _# }end
6 J6 N! l: B! b) w5 j
% Y/ @: b& Y  d) G1 G5 Xto setup-turtles 3 p6 H# c) U- Z
set shape "person"
4 t  w( j! U2 ]1 Tsetxy random-xcor random-ycor
& s( d' j$ P2 k$ M8 u0 g: Wset trade-record-one []
9 S1 m1 d7 }/ ]' B
) q& o6 v, E5 k* D0 Y6 ~
set trade-record-all n-values people [(list (? + 1) 0 0)]
, R# w, }) I) A5 D
! E' e9 r1 u, ]
set trade-record-current []
+ L0 _  ]! A: k( H. p7 nset credibility-receive []9 ^# p1 x: L& {0 _( C7 w4 \6 k
set local-reputation 0.5
; {! ^6 y! B% ~8 A- Hset neighbor-total 0
7 K$ M0 c# {4 ?& qset trade-times-total 0
' k4 {3 x* }# E9 vset trade-money-total 0
+ g' \1 h+ G' c8 @& Y( tset customer nobody
$ z, ]- C( k1 r7 l& O! w" v8 P' e" dset credibility-all n-values people [creat-credibility]( r2 v) p  b) s5 t0 `; `* B
set credibility n-values people [-1]
2 U2 @8 L: U% m, Aget-color
% V4 w: v: L% r+ ?$ w8 ^
/ M4 y# J4 H  l" L2 }) X; Y5 [
end3 Y! Z& a# W/ x- _# v
+ v( Q; y% R' U# [+ \0 g' Y! m+ C
to-report creat-credibility+ C' _6 {# j. e/ k6 S3 s
report n-values people [0.5]# E8 d  Z# P" Q4 S
end3 F1 W) i7 b: M, |7 J5 e

( E  ~( i% _; h+ t; L) ato setup-plots
, ~  d& b" I$ [1 W, p4 W- ^: D
set xmax 30
% q7 x: c! |; w+ ]" K! X
: i& Y, E% w; C! k
set ymax 1.0

# U( M2 j* F- P9 e( M) b- X. ?
) S6 b6 F) f. N" Tclear-all-plots

. U3 K9 e, R  Y! ^8 G- L8 s: A3 K; o$ o
setup-plot1

2 k1 w4 F8 \9 N- I- g; M5 F8 c& L' y2 e+ E. ?  r
setup-plot2

4 G0 B2 P3 A# w1 T2 B6 c! a# K4 Z/ W; Y2 t1 X
setup-plot3

( D. }! e! A( _2 @/ S3 d5 ^) x. |end# u1 C- }$ ~5 ]* Z$ R0 a1 G* K4 G

% C$ F" N& v$ c5 x;;run time procedures9 T0 _. M& o6 U8 S6 }( _8 {
1 k6 ]# _8 k7 T" h0 I2 A
to go
& i( l' ^& L. z. d9 ^( a
: x( K0 y* e0 \2 Q$ S' }- w1 o% ^% iask turtles [do-business]
  n+ a, @7 m, e  {; K; l$ o1 f) b3 v
end7 X7 G* U, k' J* Y) e/ Z
7 I1 j2 e3 k( m, u+ Z0 z- Q' V
to do-business
, p4 j9 S6 W9 B. a: P4 T9 C: E
! u: K: c1 Z2 b% [+ p4 |7 d
/ y4 G# b. O% T3 V+ X( h  ~) J
rt random 360
* |/ \7 @& C( B! j

& |; b  `4 b3 l- ]fd 1
$ g+ q5 q; }% `, l/ a6 z! x
" d9 X, _  T% _1 i
ifelse(other turtles-here != nobody)[
" a' X) h  Z0 P& ], C: g. B
4 s5 d5 S. k! [  P8 k; ~: T1 T
set customer one-of other turtles-here
' P8 |( _6 M" V% I, j

6 l/ p# h) d* p. Z& X* h;; set [customer] of customer myself
, b5 S# l% u4 U5 N5 R

' Y0 _# d! T5 u: g# nset [trade-record-one] of self item (([who] of customer) - 1)2 S5 M( j) v1 K! D- R6 Y# D
[trade-record-all]of self
+ [& i5 F% d! @) w9 \& |. k7 M;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
; g* h. g/ {, b$ }5 k& h% m

% o) X' Y+ v5 ], N# a( _set [trade-record-one] of customer item (([who] of self) - 1)
( H+ y, W8 D4 x[trade-record-all]of customer

$ N0 @: I3 C2 a# e0 @; c9 z- t* z0 F, f% ?2 X  b8 A
set [trade-record-one-len] of self length [trade-record-one] of self
; v  |, U1 u4 m

+ E  b" T) L" X1 W+ X6 Aset trade-record-current( list (timer) (random money-upper-limit))
; V$ ?& [/ d5 g+ Q

5 p& E* }4 G4 n$ Eask self [do-trust]/ t" c8 j; \; i2 `2 v& w
;;
先求ij的信任度
5 G' N+ d9 f8 ~( ~$ G3 P* n1 T) D" \8 k
if ([trust-ok] of self)
/ u: G4 I+ U( n/ I; `' X;;
根据ij的信任度来决定是否与j进行交易[3 c( y# ]- U( y  Z0 N4 d
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
6 L4 z& O, G4 q4 R. i
  g/ }7 e$ h$ q3 u[
. }: @) J1 M! h4 e+ A. a) S7 ]+ \  M
' @7 J3 T2 t2 E; @6 p. P
do-trade

  Z' }5 m" T! D" P' L7 O" y; _, t% b( @+ _# y  m* @+ H
update-credibility-ijl
0 @! ^- R( L* F8 ^  z+ c

! H: w9 ]1 ~& z$ j5 q# ?. A& E3 fupdate-credibility-list
& l4 j2 m- t! l  d3 T! _( `; P

: H) k) R6 {1 {" k4 e- o7 }( g5 S# o- Q! A7 B: s* L
update-global-reputation-list

+ l4 B1 }/ e2 L: b' C& [  [
  E( {. x# m9 upoll-class

: a% y( @, }3 |5 C" A7 ~
$ e2 c( n) z' Z- L4 [get-color
# d* }3 y& X. q4 q- Y0 r, k

/ O6 O2 _. {2 R]]" R7 g. B' }  g3 F) e* s2 c  N9 R

% x( s5 u8 Y. e2 ^;;
如果所得的信任度满足条件,则进行交易
  c% u# o" u' j, l
; [; N5 m4 D  W+ i[

+ y# P/ [/ C: H/ ]% P2 Q1 l" e
8 I4 L9 C0 w+ R5 art random 360

* [, k1 v  J: C' A3 i' O7 F, t8 T; Z+ C; G+ `, i
fd 1
$ a8 }% _5 s" P4 S
3 W% Q; o: c: S. H
]

6 |& m6 Z* J9 H% |: i! ]- C7 t1 u# }& r7 P
end
+ m% F/ ~! C. B3 t) s1 t" N/ I0 y
2 M: @, z; w* x
to do-trust - Y8 }; x1 J) M2 j5 }6 t) a
set trust-ok False
+ r  b$ ~  Z# l/ J2 v
; q+ q& q. j6 D

; z- w7 V/ f4 |1 s$ m4 P6 p5 Wlet max-trade-times 0# g4 @- w. i2 h3 J% a+ i3 [1 b
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]7 P: {$ I4 Z; u/ p1 B6 g5 F
let max-trade-money 0# y: r  V5 m9 u! h
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
9 \( H* }: d" \6 d- `$ O- @let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
* a- ~7 V/ @& [' h( B
- ?5 I$ m8 T2 ?; ]4 t$ I. s" d

' c3 v$ Y" C: F- sget-global-proportion
( ^! @& p/ n4 n* O* h5 Jlet trust-value
. k. ~$ c* L' U% Clocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
3 t+ I" E( y& ?3 E8 Q2 _( s0 ]
if(trust-value > trade-trust-value)
! O, A( h5 [* n9 I  g+ l2 W[set trust-ok true]. R8 ?4 R+ M2 m( ?: M( D# k
end
0 l7 \% j. P" I
$ R6 h8 o3 v6 Rto get-global-proportion
5 S$ i; ^, E# Z( i: E0 _8 ~ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
' [  M' D+ ]& d3 N[set global-proportion 0]
& \/ h  Z2 X. }( `' d8 _! C9 L# ][let i 0
9 T% I, f" R. E. A+ x: `9 Blet sum-money 0( T5 J3 H% w& P0 ?5 r
while[ i < people]
; Q6 u# T8 n% M6 K2 B) g- I1 H) ][
+ c4 y' v6 E$ e9 R$ G5 bif( length (item i
) y. C( d0 @4 S. l$ f' D! Z% d* K[trade-record-all] of customer) > 3 )

  a6 P, }% w; i; A+ `[
/ Y) A; A0 d- ^8 @6 [$ fset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
; C$ {4 H& o, ?5 z  B9 @2 u]$ d# b6 L2 `$ I. v$ ]- l
]
8 ^& t9 T" ^3 q& x& P5 wlet j 0* g( d# S$ n0 M* y8 d' {
let note 0
2 v$ |; U$ A$ @9 J+ E, r' hwhile[ j < people]
# ]: z( s* U( w% E% g[4 b) |0 _. e' e
if( length (item i
5 ]1 Z0 Y9 O$ |[trade-record-all] of customer) > 3 )

4 @& h/ S6 q2 [, k& l* V& P7 W/ r# f[
0 i. l$ _: V) Y5 q/ D( Eifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)1 Y) k8 |) k& N7 o7 q$ m9 ?
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]7 r6 z7 k6 Y7 C  |) q! g8 i; |4 r
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]: u( s9 c0 v. v$ \) i4 r
]3 L9 |1 v- M4 ^* l9 ~+ A, ?
]
) `+ x) ~. O. p2 D& ^8 G! Tset global-proportion note/ y1 X6 T8 F4 ?
]. p) i" ^" s( @3 m+ B
end
$ y, t! E& X1 u! k; ~! g
$ e$ Q3 V; ~8 B( W+ M6 D; eto do-trade
1 I0 V( c/ D* }/ G4 W8 l2 N& r;;
这个过程实际上是给双方作出评价的过程4 }9 m- I9 c9 T2 Y1 q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价' V) x3 l% m' T$ d5 F( T8 ]. y! c8 o
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价% F( x9 @& I+ ?  h* T
set trade-record-current lput(timer) trade-record-current  q' W" T& P9 P3 E9 |( w2 M9 t) r
;;
评价时间0 Q- u3 j# y+ b& C: ~
ask myself [
) W# j% \4 i; U- |6 p9 fupdate-local-reputation7 j4 c8 f" c4 B
set trade-record-current lput([local-reputation] of myself) trade-record-current9 @1 T. `6 l9 F! f; N+ n5 I3 K$ t
]
8 I% u" I2 C0 F4 fset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ g8 ~2 I, l& f0 g  P- J( P. J( @
;;
将此次交易的记录加入到trade-record-one; r" a9 s$ J0 w) r
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)" z: Y) N8 g7 d% d/ E
let note (item 2 trade-record-current )* Z5 h( h( _* X1 I  _5 |! j7 l
set trade-record-current
0 v' y. \- x1 _! \(replace-item 2 trade-record-current (item 3 trade-record-current))
& V" p6 g/ w: C5 ?, {/ n6 u
set trade-record-current7 @: m0 o( d% o. g+ F9 r
(replace-item 3 trade-record-current note). \, o0 R  M0 q) A  u

4 m( Z7 k) l3 \7 B7 c' F

% k1 k( W7 k9 U4 F; eask customer [
4 f, q% b; ^: A6 zupdate-local-reputation( K9 |* w* u  R1 l# N
set trade-record-current
/ K* D0 d1 }$ f(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

" p+ y* C5 ]# o- D* C/ o]4 ^: H7 e' e0 n0 R: x  E+ K

, \, G2 _0 v; n0 t
; J/ t0 V# N8 a+ ?7 V% ?7 C" ]6 K
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer: L$ ~  h  N1 S7 x" _( `

' O3 ?3 d/ j) B" Pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
2 O/ A- V' x" W, @5 W! _  [% U;;
将此次交易的记录加入到customertrade-record-all8 x; \! c" q& t6 H9 k
end* S6 E3 w0 T$ Q/ z

+ }" O- O: [8 X" n: @7 kto update-local-reputation3 \+ C2 {9 v. a2 C
set [trade-record-one-len] of myself length [trade-record-one] of myself6 B" O, M3 R, p2 Q
8 i2 a$ d+ |9 `# H) n5 A9 k; T# k
: c: p+ i  f( ~7 b+ V
;;if [trade-record-one-len] of myself > 3

+ X# Q0 S7 S% g/ Bupdate-neighbor-total0 `4 W0 s' ^+ v7 l5 M' ?9 o
;;
更新邻居节点的数目,在此进行
# F2 b, n' L7 o2 Y4 z+ i3 V# glet i 3) I2 r2 X8 \: w8 s* M
let sum-time 0: n6 ?- |3 Y  e) m$ i" D
while[i < [trade-record-one-len] of myself]
9 a- I$ f4 H. V[
* ^- }  I3 w: |/ [set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 W7 A, K9 z3 B% A( Uset i
  r  ?* \" S. Q6 h, N6 [: j( i + 1)

! c& A7 z/ P, Q- A]3 B1 V3 @2 Y5 X& J( O
let j 3
0 ], {2 {- ^1 s  w8 `) H2 x/ Flet sum-money 0: m$ G5 N) D3 p& c+ A5 M: Y
while[j < [trade-record-one-len] of myself]6 S/ f7 q3 i0 y3 Z# n, k& `
[* @3 O6 u! ?6 |2 [" u% J: _
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). U& [: B3 p& |0 G& S0 _
set j$ s- ?# H! s: L) m2 F, m8 F( D0 W
( j + 1)
  x' \9 l3 W; b; @1 U
]
; K, Y- c+ d1 e$ F- |( Hlet k 3
9 D. @* P" S- K4 p1 \let power 01 a4 ^- j8 ?8 Z6 d7 \2 f/ \
let local 0( X. n" \2 [7 u! W1 N$ u  s" d. e' O
while [k <[trade-record-one-len] of myself]) f+ I- z$ F' f# w7 ?! z
[
/ F2 u* R2 w3 g& g2 F' `set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
7 ?8 R9 u  E: H: [. l# S; nset k (k + 1), v1 q- H6 V( l) ?% H
]
3 o% B3 C1 v2 Z- `% c2 @$ eset [local-reputation] of myself (local)
+ l% o- n8 n8 {! f9 T: g- ~end
0 b1 R* H/ n+ g0 Z/ q/ F, K
+ P4 o1 d; F9 u# S( t, Q( I3 Oto update-neighbor-total
: B" p& [, f, g8 ^0 X" H! h4 D8 a2 p3 t( V' U
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]& q6 p9 R0 O" V1 _; D

" b' t" l. d( ]) Q

) S( G( I0 b4 `7 g  }end
6 M5 r3 g6 ~# ?
; z( T+ V) C5 x; |) k3 T6 v% rto update-credibility-ijl + d! T6 S: p* R3 b% U! y/ P
6 a; H. `% @1 }( Y( Y* G! N2 A
;;
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 e- ~; rlet l 0
8 ~2 D% e- u* M5 L4 C0 [+ bwhile[ l < people ]
, a3 {+ f, T. C;;
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
9 t$ _: J8 N: ^2 M1 A2 C[! {- J3 f/ X. Q! M
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)( Q; W/ p" n0 ^' g( @
if (trade-record-one-j-l-len > 3)0 F; n" P$ _: w5 x3 D0 h' 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. d) a4 F& J- K
let i 3+ s- h; m% d: E4 _. }
let sum-time 0
6 _% D8 q' s0 @& v) Rwhile[i < trade-record-one-len]
& K% C) `- V2 e1 _) b# `' R. {[
- x2 H% W2 D: D% x$ U1 Z; o5 P. Xset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )- w, W' F  i: j
set i
  d  N3 J5 h; \) F: X) R( i + 1)

/ X5 F0 S0 G+ s& n]/ @7 M) j; E( @' p& i  i( x
let credibility-i-j-l 04 D% O1 o! X! k* Q5 z7 G
;;i
评价(jjl的评价)5 ~! \/ @1 j9 Z2 E
let j 3
+ w4 Q8 ?7 `* I' k6 wlet k 4
9 Q# Y' b- V8 o  H) Owhile[j < trade-record-one-len]' {% T4 R1 Q7 [- s
[, g+ z$ T' @) q  u/ B/ x
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' |& V) I, d5 d5 L  b6 e
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)
. ~8 e% B- F  F: m5 ^1 r) Uset j3 b% ~, g3 |; J
( j + 1)
( n4 E6 [9 u6 P
]
4 A- Y* ?3 y9 @" Dset [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 ))
& ?/ Q+ m, a# ]7 V: L# T& c% |* D0 g4 W
  N+ ]- W# |/ B- F2 z9 |
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))3 N. u9 @& g! F" @+ B
;;
及时更新il的评价质量的评价& s) d" F4 D$ [! Y; P0 b
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]# Y1 M4 i4 r, B& j( ]
set l (l + 1)- Z- N; Q0 ]# D* u% |( u7 r
]
5 t4 p, m7 J3 S% E" \3 q) g6 Z! q) Fend+ I+ V4 r0 i. N- l  Y2 ]" C
8 Q$ q  t- f  s7 V# J) s  M6 r
to update-credibility-list; ]3 S) u& R8 V/ W- u: l8 T
let i 0
1 o0 R0 k5 q( k& g! w7 mwhile[i < people]: c+ x+ m& [' K) m# K! _7 j
[7 a5 U0 M$ z$ o: S5 \+ y1 u
let j 01 E% B+ z+ T' m! z# y; d1 o
let note 0
4 N8 I9 ]$ `7 r7 d0 l6 R' `9 klet k 07 {# L( D2 W& ]0 f8 c+ O
;;
计作出过评价的邻居节点的数目5 e0 R& H. z) K) i# N
while[j < people]$ k5 c! d# m8 V8 P: _5 l$ z9 W) r
[$ P/ C+ N: _* v9 Q' F6 B3 i- w
if (item j( [credibility] of turtle (i + 1)) != -1)
; a3 N9 \8 ]; F' p. ~8 ?9 p( t  R;;
判断是否给本turtle的评价质量做出过评价的节点# ]6 `; f9 N2 o4 S
[set note (note + item j ([credibility]of turtle (i + 1)))
+ N  v/ u7 Z8 {: G& D;;*(exp (-(people - 2)))/(people - 2))]
" m. E4 n8 |/ x7 P. U+ u
set k (k + 1)+ D4 b6 Y) e6 v# o! I7 j/ Y
]- I  b1 E+ \/ ^' D1 s# r; b
set j (j + 1)! g6 U8 T4 l, n5 G8 F
]
5 w1 M" G6 T1 R1 \$ O7 Mset note (note *(exp (- (1 / k)))/ k)
! Q" O+ T5 k' ^# W# i9 Zset credibility-list (replace-item i credibility-list note)
- r5 |6 q3 n- v+ E& uset i (i + 1)" l+ G+ F$ S% S  l2 L! I. q" Z6 U& k
]
% E0 z+ r6 z2 }$ B% D+ ]end
0 S4 y4 a7 Z8 y
6 u' i: i) _8 j7 @% e5 x; r* kto update-global-reputation-list6 I4 y- Q( q9 C! r7 h2 B0 {9 T
let j 0) Z4 ?. ?3 g: V
while[j < people]
7 _4 c- c4 \8 N7 c1 \[5 L9 o( g; s! J" a: S
let new 06 D) b& t9 U+ x( v8 [( z! `
;;
暂存新的一个全局声誉
4 }+ \1 a$ A9 X% y) a" Hlet i 0
( e% |( B4 P( t3 n6 vlet sum-money 0
4 E. T9 I0 [2 l0 U! M# a" Rlet credibility-money 0) T- c* q+ \5 W- X4 O% S
while [i < people]
4 A$ Z8 _! G. J[0 p- L2 d6 K3 w4 C# M3 S
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))+ ^' Q* m% {2 x9 g6 y
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
4 M8 {* ]  S& @( W! p8 iset i (i + 1)
# r1 H; y8 U5 C- C0 c]. x- F6 v; ^! k" E
let k 0
6 k, H3 g0 _1 v3 H9 D+ l3 ~! flet new1 0
  G3 u9 ~1 a5 H7 l/ [; R; \1 mwhile [k < people]: g% C1 L; Z* Q) S/ @4 C2 W( }
[0 d* e( i! {$ H- B7 t  _3 W0 K
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)
$ \; R( T, T' M5 kset k (k + 1)# C5 y- ?( z" ?7 ^* e4 ~1 \
]
$ Y( g5 h# O$ f7 jset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
4 B0 R  o5 s; z* g7 }. Bset global-reputation-list (replace-item j global-reputation-list new)
3 j9 L7 i" _. {$ Q, `set j (j + 1)
9 g1 Y( z; p% G4 ?7 O9 Q]
" O7 q: Q9 W" [. ?end
/ P9 w2 u) ]" y7 X$ {  u3 D6 I8 P# x5 O2 B% i
5 A2 \* G+ m7 F) Q! e# n7 q

. {  b( |$ b6 H; k6 J8 ~, D9 R# c( ato get-color+ X( P, ?; g* L9 w1 D8 r

" S( Z: s# Z5 l! Yset color blue

8 U& l. J* @# c+ o% Qend! J) f- O( x& j+ a
0 x  T, v& `' t+ i' F& {% i# W
to poll-class9 u) {. ~8 x; [6 Z4 H" x% |
end  F* a9 n5 k0 b6 f0 F

' B) o! ?% B. ]. tto setup-plot1: G& f! a% ~* z

5 R" \! A( Q$ g  y+ Y/ Mset-current-plot "Trends-of-Local-reputation"

# @- ^" e! |, a- t
4 t6 C" F; J5 k0 E( q) ~6 J% dset-plot-x-range 0 xmax
9 Y6 l2 i/ L& w) L7 k1 Q" p7 U
, i+ j& A1 \* p8 G
set-plot-y-range 0.0 ymax
1 R! w4 f' z' R% T: b9 Y, j* E
end, s5 h1 v4 N: u2 a5 ]1 A0 o

* R( ]& {2 E3 S# m. u+ N) V& {to setup-plot2
7 K7 b  w% p6 i9 x
! I7 s2 ~6 J& S0 @. x: zset-current-plot "Trends-of-global-reputation"

8 d; k' |: t( I/ b- q" E/ V$ D  S
* L, v+ s. q: o, G0 w* a  M- @set-plot-x-range 0 xmax

+ f) _9 t: @! }/ L2 Y& {3 _) y( |. ^; l! f3 c6 a/ t
set-plot-y-range 0.0 ymax
$ }7 t' ]. d: w
end8 M8 R  P, s- Y/ u/ e+ A' b
, J: k, u. T3 M
to setup-plot3" {8 }# }5 ?. {
: Z+ R6 m9 q' l. q6 f$ @
set-current-plot "Trends-of-credibility"
: K9 h1 Y% a/ n1 s
2 K3 Z/ L$ T  @3 g! F6 d  v
set-plot-x-range 0 xmax
( j: I. e5 k* E4 d, }3 O+ K

. o3 \5 t2 J+ C2 Y1 U' n- Mset-plot-y-range 0.0 ymax
$ _: V5 I2 m- i3 M
end
6 C% ~: ?, a. S  R9 ]2 w+ C: }: F0 G; k) t- l  K9 S3 Y2 w6 O
to do-plots4 t( N- o, ?: y" p( L$ W# U
set-current-plot "Trends-of-Local-reputation"- _  R% ]1 {% F1 y0 x
set-current-plot-pen "Honest service") x8 L$ A/ \' d' J- k
end. c" ^9 F+ l9 v

7 Z! i6 O" W5 H) M: ~/ V' q9 n[ 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 F8 h2 v, S, x1 |) V4 E9 c( @6 T" W+ }- q. q7 ~
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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