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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:. L: [* B6 S' S) I+ U5 f3 f
to do-business ( E  z, H* Y* |& t( l) c# b" f
rt random 360
+ y* B* A6 U1 c/ E. N* r& `% T fd 15 z  [" T3 d/ V% z5 e
ifelse(other turtles-here != nobody)[
( t2 B$ Q, }0 o* @2 b& A! f( u   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.( A4 ^# A3 y: Q
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    , n, S9 o9 v$ h7 @
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer+ ^/ H" y8 ]4 I# z6 \) o: H
   set [trade-record-one-len] of self length [trade-record-one] of self+ L3 P5 w7 F' e2 G2 z. {( y* n
   set trade-record-current( list (timer) (random money-upper-limit))
2 v4 t0 G0 N. ^4 T7 {9 }. C
4 M8 o" X$ ]/ R! h问题的提示如下:8 ~3 ^. E( X3 y4 t8 M) S( z

) k' s: j- {- J8 h$ w5 T6 ^4 \  P! _/ A5 nerror while turtle 50 running OF in procedure DO-BUSINESS
9 O4 Z0 h5 ^/ [8 V' b% j- V- v8 D  called by procedure GO4 [# J6 [& B) a* f
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
4 E2 ^6 p/ Q* x* j' ]& d
(halted running of go)3 q' f" t2 D/ M) x

9 b4 K' @1 S6 G" _" a. r" |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~~* A. A- l% E% |9 Z# |2 N- j: J! d
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
$ k/ Z5 t) Q! _globals[( D- t4 T% F1 y- o8 Q+ q
xmax( p' B+ b) z7 r' p& B' u) s
ymax
$ X# P: V, b9 [$ uglobal-reputation-list2 ?4 |* W6 D$ T% x

) a) J5 b+ B- f" a" N;;
每一个turtle的全局声誉都存在此LIST) `0 X0 I: l- h/ H
credibility-list
- m1 ?6 M0 [) ]8 s9 m) `  p;;
每一个turtle的评价可信度7 o) e5 e  O3 I" f' o
honest-service  z$ ?+ ^* b8 ^# f2 w" n2 J/ L
unhonest-service
2 z" n; q4 f* v: goscillation
7 @* B! [4 _5 S" Brand-dynamic  k; V+ ]* o- |8 y7 u# {
]
( `$ R9 O2 Q- {0 A7 f! Z) F- W
8 W; X. C* B5 |turtles-own[
, E$ B$ y, L! F8 D/ Xtrade-record-all
1 d0 m1 ^: p/ Z: c. W6 C" E# x;;a list of lists,
trade-record-one组成
/ f5 h& Q3 Y$ n8 r+ ntrade-record-one7 U+ C7 L$ N: y9 S: u
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
) o! B' {6 l$ t, y8 f6 _3 _( c( D. i& ]  S  f1 x2 `$ s' l( F' I
;;[
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]]7 L5 Q! {' R2 @4 @  S) J! L. 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]
' _; t! _( n: [' Zcredibility-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
7 g: g6 y4 w4 e( K2 J- q& I, Vneighbor-total! R' N, C2 j& l+ B
;;
记录该turtle的邻居节点的数目
  A/ D$ K# x, Jtrade-time  y6 D0 P3 C7 I
;;
当前发生交易的turtle的交易时间1 b" N; s1 T' a; c% H: x% A4 k6 u
appraise-give- Q9 k) ^4 j- W1 x* o3 Q+ Y
;;
当前发生交易时给出的评价# Y6 c( i: T# k$ b0 o
appraise-receive) U- p' d9 n+ Y  p+ {( z4 r: l$ B) E
;;
当前发生交易时收到的评价% r5 K0 x( L4 r% ^
appraise-time
3 N# g* ~2 {  a% ];;
当前发生交易时的评价时间% v( k7 l6 {: ]* J/ `
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
' `* ?4 N  Y# u0 i, Gtrade-times-total2 C. U) Z7 P% _" k" O
;;
与当前turtle的交易总次数
& z/ j/ `( I  v7 ^- W& `trade-money-total
7 ?, o& \$ |# q2 w8 `2 L5 v6 l& U7 J;;
与当前turtle的交易总金额
% v3 `, Z! P8 }  `local-reputation7 J% I) V. q/ S( ^# c+ F" J( R1 V
global-reputation
) Z$ w# ]9 T7 I, Kcredibility+ T0 R2 R- r- c* @/ h3 o2 l
;;
评价可信度,每次交易后都需要更新1 \) |& N$ T0 o6 F' k7 i
credibility-all) ^# ^) ~8 o" D# X  Y
;;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0 f5 }" |5 U. r
/ }1 J, n; m( _& U& y
;;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% O' w+ C$ @/ W
credibility-one( Y" O- f8 G! \( Y, V6 f
;;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
% u$ T5 z: G+ G4 y! J! tglobal-proportion
6 |. h, N& ]  U1 o5 ^/ Ecustomer
0 F# R6 J# ^+ p7 ^customer-no! R: e" }. Y; x# ~
trust-ok8 Y# {# z1 G# J. o. F
trade-record-one-len;;trade-record-one的长度$ n  ^, [* \& d* l
]
/ ^* H' G) _' g) p9 z- g3 x3 B7 ?# d8 [" ]; ~) [) {. G
;;setup procedure
6 B1 c. b8 T& \" @$ U& ^6 X; j5 y0 ^5 f. r7 o- ]
to setup; @* L8 h3 [5 c3 g7 V

; f9 I) N7 f7 Hca
3 Y, k" I* U0 h7 q! ~
9 k$ C7 K* k  y
initialize-settings
( u( G* Q  P$ s( d
6 Q0 n& \$ M9 |# D
crt people [setup-turtles]

( Z4 a0 w8 [6 m8 L. k0 g  P4 N; k- r# v
reset-timer

# F7 f  N5 q& O5 {* L/ [8 e0 `. J0 G' s# v" g7 t
poll-class

: q7 M6 y- K, v0 E3 e  y/ {1 s2 ^5 @
setup-plots
$ n  ?3 f1 C& ]% Z; T' s0 \& [

( v% Z% [* Q8 n* ~, k6 n. E( @do-plots

0 G7 i: h. |. O7 Kend& h0 r& e) B7 S  h

5 Q! q6 d1 x9 jto initialize-settings+ }0 G/ _/ e  V4 y! z, `
  l, T9 J1 i: g8 S2 w- j5 W
set global-reputation-list []
/ H2 J% z% R+ L+ T- K; ?% Z
3 r+ q+ z. a6 ]0 _  C5 |" F
set credibility-list n-values people [0.5]
+ R& j3 T* \9 v9 V; c; K7 f

6 i3 x- O9 B  G& }' Yset honest-service 0

7 y* n4 ]' B- s5 o- R0 O! Q/ A/ a5 u: I! g
set unhonest-service 0

2 F3 y% h& ]3 b# Z5 P8 P/ t
& ~# Y- U' m# nset oscillation 0

4 H5 d$ B2 c9 ^6 T% Z
( W; Y- h2 S, zset rand-dynamic 0

' V* N) f2 U5 m  Q4 T0 x9 Gend% ^2 s  Z  ~/ a9 E$ X; L7 _

( o) p' i# b  Z& ~7 wto setup-turtles ( i4 ~* k  ]9 y2 f: m
set shape "person"* g+ h+ [4 Z% m
setxy random-xcor random-ycor
7 Z: F9 W9 c" m8 p3 @& sset trade-record-one []1 ?, x+ Q0 I, \9 F; P" ^  z: w( F

6 K9 n" d$ b% D3 Nset trade-record-all n-values people [(list (? + 1) 0 0)]
5 ?# D; u, b" w* N6 B, M6 s$ L
) V" i" @( r: m' |3 P& S
set trade-record-current []* E+ w  u( b! i% y! P( N
set credibility-receive []* K9 ^7 z* Q' l/ l4 e1 m; F
set local-reputation 0.5
( g% N1 b. Y6 }2 s7 ^4 eset neighbor-total 0' P% b0 p& Y2 E: h: r
set trade-times-total 0
, ^6 F* u( u& Vset trade-money-total 0+ z0 T2 _6 i7 F
set customer nobody, ?8 H7 w2 `- D7 _9 a
set credibility-all n-values people [creat-credibility], Y) @* ~% j  z! u# e+ y
set credibility n-values people [-1]
6 w! y* P7 j4 e' G- ?get-color* _9 \( l9 N- G+ x

' \1 _; k' A# d5 A# E# q! Rend
& _& h" y8 D- E0 y/ j. z$ F/ ~# r
& R& M$ h( Q" j; C, H7 K8 ~3 [to-report creat-credibility
8 K3 f0 J" f1 m# |report n-values people [0.5]8 W) [( N' J* s. _  E0 A
end" N" \  s' H4 T, y. _  G2 N

, e( X) K! D. v6 Nto setup-plots
  U  K7 P+ ]) b0 u6 H+ r- T3 O+ W; I, o+ n5 H
set xmax 30
+ S3 C8 r  z  _! U* k% g9 P9 R. Y
& R( b* f9 Z6 z& {
set ymax 1.0
. a( t. K0 s1 V: k9 b  W! W" S- T$ }
( I* C% p5 j' L- p/ H
clear-all-plots

- l0 Z' p: R" v4 f# f; u% }4 D( w4 i
8 q: r2 c; p5 {! L2 zsetup-plot1

  P4 D; P' }; f& o4 H5 b" O
8 w5 T+ m4 C- }$ ~" L- x, Y( Psetup-plot2

5 S3 M- O+ S4 f0 \1 H
9 b/ D' i1 Y" @$ d( \setup-plot3
9 F5 N0 d4 i9 l# b* B" ~: X
end
/ T  y. `" B8 P# A6 m* O3 {% D2 u& ]  q  _% h
;;run time procedures
* V' Y- {) P( q& a# x: f# @  y
5 C$ ?) `  A: S" p+ `to go
  }/ e( n2 R) ?+ p' c0 z
! S! B4 \6 d: X8 w; P# i% r4 `ask turtles [do-business]
, j5 i! R5 a5 X
end
3 A( f4 [+ n  ~( e) L
1 K; `( ~6 @; s4 D: b( z, \; _to do-business . i9 }" D, W6 o

( X! @$ Y; p0 a6 B9 v+ w8 b) [- x! v0 f4 d
rt random 360
, q. j# f7 Q/ o$ F# o
% ~# Y7 [9 D3 b; u
fd 1

, [4 d# h- s$ }. R$ u9 |: ?* l1 T9 i3 A3 m2 W* n( \& j5 n
ifelse(other turtles-here != nobody)[

" c, D3 w5 q# S$ t6 |; r0 v8 f- i5 U$ f% v$ }8 o( p1 l  ^
set customer one-of other turtles-here
' L3 H; e0 ~+ t, h" L
% x* x* S' n5 U" e2 i$ V6 \) s
;; set [customer] of customer myself
7 G& }3 T3 Y4 T' D: M$ U+ a

8 x$ I9 P" V0 C' g' n5 F- [" ?set [trade-record-one] of self item (([who] of customer) - 1)5 K1 O0 }0 u# p8 Z9 s5 c8 o
[trade-record-all]of self
$ v8 j6 y& F0 d$ D- e6 v3 u5 S;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

. N& R4 W$ ^8 L# p8 X& L4 t
4 x$ P" T9 N( pset [trade-record-one] of customer item (([who] of self) - 1)
: _6 i0 `' ]! t) Y$ B[trade-record-all]of customer

! `8 w" F7 `- n' g+ m3 Z) a
* Q+ Z6 {" k$ ~1 K4 s# Y/ O4 eset [trade-record-one-len] of self length [trade-record-one] of self

, y( j+ j! m/ W: `/ h2 [& p; S6 i& t
set trade-record-current( list (timer) (random money-upper-limit))

0 r4 b2 d5 {9 s2 ^% }
: g. ^8 D8 u; o3 Vask self [do-trust]" A4 ?; f( p" A$ {, l
;;
先求ij的信任度
5 E" J8 b3 Q9 b: r6 k+ ?- ?
% n! m: O2 K. b7 R" q7 sif ([trust-ok] of self)$ Q3 m! H3 ^& ^4 x
;;
根据ij的信任度来决定是否与j进行交易[5 |/ b; v) G' h. ~1 g: q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
6 P9 p$ r$ v. F& ^* }  E" e; p5 N1 S8 x
[
1 Z# a" n: c" h1 M# a6 p
" A! \4 e5 }* i  Z5 `
do-trade

3 i( w" G& n" S. l3 e. Z
+ Y0 }+ b+ F  `9 q$ I. C' lupdate-credibility-ijl

4 `6 y. }: M- I3 O# c  o2 c. ~# x! b$ p
update-credibility-list
: k9 y: j) f7 j0 R' z2 x5 y: k

& s( v8 V" o5 U3 u2 B: H+ v1 I/ `8 ~4 A8 N9 [0 w. k7 |9 ?6 u  J
update-global-reputation-list

' B/ S% H$ C6 @2 o0 b% i" w' }! b/ g( d1 X) ?: A. s- ?( C5 |6 J
poll-class
) r& l6 l% D8 n4 z

2 ?( s2 b) J9 c# b4 Xget-color

% l5 O  v& s' A, O/ z7 E+ M. y6 L* w
]]
1 u1 M/ T7 P: L  E0 t/ O0 j: i2 D! d6 L
;;
如果所得的信任度满足条件,则进行交易
/ P2 [0 i  g9 N( x5 U, A6 _  k9 B) k
[
# `. z" o3 r' Q% b

- o; t6 u. y) o/ s1 l1 irt random 360
5 N0 Y8 m) ?8 r3 J

4 K# v: ^2 B( E; Ufd 1
9 I1 j% {" K( ?' G1 u

  Y% _, O4 `  P5 c( S* m$ B6 |]

% ~" Q5 L9 |. ?) v  x9 e/ R/ b
$ G! S# j6 Y/ |- C; Tend
3 p0 H: L& I1 V9 P0 J, R1 j  H
$ o8 Q- Y6 _9 ^
to do-trust 9 _5 k6 p, U. o6 m! B% S
set trust-ok False3 n, b- Z% k( O/ A
* J- F1 v( s  o; G
! c/ a0 c2 Q6 J2 D
let max-trade-times 0# ^4 W5 c* D: h5 X2 T
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
+ y" D& X. e; ?. W( mlet max-trade-money 07 n7 A1 p7 b+ k, o1 _* N
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]2 y6 |+ S$ v+ @' }( H; {
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
* k# u) T* r; c! O. y1 g
0 L* [  n$ E: |

# I0 l* S: C2 P5 d2 ~) h2 Nget-global-proportion
* h) E( l7 G" t/ z/ D9 [let trust-value  y+ \+ ~" V' m+ M: \6 Z" f7 M
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)
3 T* W5 K) C+ L- O
if(trust-value > trade-trust-value)
! K" s. X# m2 M0 j) j" s[set trust-ok true]
. M" H: }* T* v' ~5 A& _1 Xend7 }$ z. Y& G! H# z3 [
1 V2 g9 t* Z# {  m" ?; A
to get-global-proportion
  f! \9 k  u' ?ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
; Q$ b8 d6 G  }( @; {/ m8 k4 B[set global-proportion 0]$ `& e4 h6 C4 Y8 X
[let i 04 o' h4 W/ R3 K5 K6 o
let sum-money 0  U2 v- \- k( O2 w  R
while[ i < people], J: U! b* i1 K2 g, O
[' V2 w! f# ?, K: O7 I6 {/ @
if( length (item i' z' C7 H4 O0 l
[trade-record-all] of customer) > 3 )
3 u' E9 \( k' s9 Z. X
[
' o* b  b) E' k% k: M" Zset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
) n& F5 A, a$ i5 y. P& E# z8 X7 Z]
- V/ U+ a% g0 p1 ^: t7 t1 ?, o]+ a% @3 \3 V* y* G+ W$ I
let j 0. i2 z- a& b' g+ R: u
let note 0
3 s* n3 ^1 Z  ^* z- ?while[ j < people]1 Y1 n; i6 z5 L9 U. e: b
[
. y& n/ |8 @, o, A2 E' i$ v$ Vif( length (item i; z2 u& c! g7 Z6 f$ Q1 }7 g1 C
[trade-record-all] of customer) > 3 )
: Z5 ?4 E3 C) P
[
6 d# U, g/ l7 }, Tifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)) `$ v8 {9 A- i( d
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]/ z6 x7 C4 W9 D
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
: P6 N  Q$ H- a+ j7 @5 ~( c4 N]
  A% K2 A+ |0 @  f" P]. w9 l* U, \& a
set global-proportion note
9 P# `+ ?/ V' y; u, c4 G; U0 h]: p: t) ~( g3 ~$ n/ Q
end
( x, i- f7 W# f. ?! A* D; r: M: A! G# t2 Q0 Z. T9 g! G
to do-trade; i" q# }% E  ?
;;
这个过程实际上是给双方作出评价的过程) f! m# ~8 X1 u* V
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
0 B: n3 u0 |1 H- F: U6 Fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价; C) i! D/ g+ v' F6 C
set trade-record-current lput(timer) trade-record-current
( F1 y/ H- P4 U) G" g4 M; g;;
评价时间
1 o7 j: w! R7 `5 @! ~! q& W, `& nask myself [
  r( k" v: |. ?* G$ kupdate-local-reputation8 r# t/ D! }* I4 S! [
set trade-record-current lput([local-reputation] of myself) trade-record-current8 m; o" E3 y4 w4 D
]
: H, j2 D. t/ a6 K1 Sset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
5 j+ t* c) H$ D. @# C! X;;
将此次交易的记录加入到trade-record-one9 r  I7 T9 z+ s2 H( c
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)6 \( T$ f" [1 N2 V6 S. X8 B
let note (item 2 trade-record-current )
4 n3 \' [6 o9 L$ B" Tset trade-record-current4 x6 w, d0 Y! Y# p8 e% _) T# a0 G
(replace-item 2 trade-record-current (item 3 trade-record-current))

- y, O' y+ v2 n* H0 E/ t9 Qset trade-record-current& I3 |) Q0 v3 c$ r9 K
(replace-item 3 trade-record-current note)
* N8 T  ?7 o1 ?# Z9 n9 n( k( k$ o& P  g8 W3 E# ?
, y# g* l9 G% H1 v5 F1 h
ask customer [7 S- c/ u3 B& `) n7 g9 l/ F9 ~) @
update-local-reputation
5 c& v: f7 }) F5 B/ f/ qset trade-record-current
# M; p" }0 L6 Q1 K1 ](replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
6 c7 I8 e; @* l: f  [
]
3 P0 A$ w1 g9 f0 W4 Z  [
& i6 h- Y! Q! l4 R) X; w, i! D

' }- E5 q; H; vset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
+ e, S  c& E3 u: q; b- j/ _$ k

9 ~1 L7 D/ ~  J6 v) U. Wset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)). _$ u" M/ H7 X& u
;;
将此次交易的记录加入到customertrade-record-all
2 b! Q+ W1 [# ^# e  B  r2 Zend: O* m4 m! k- g* O( o
1 d& A4 X2 Y& N6 C4 R6 v6 f
to update-local-reputation" M9 g* j) f- M5 Y
set [trade-record-one-len] of myself length [trade-record-one] of myself/ e) g" t( }5 @2 Z/ x0 c2 q- ]% t
0 a( M6 a9 w: v' R

& E; h# `3 _/ ~. M' F& w3 x;;if [trade-record-one-len] of myself > 3
1 A; E" r# c9 `$ H
update-neighbor-total: `! K/ V( H7 O0 E+ N5 Y
;;
更新邻居节点的数目,在此进行2 d4 n/ ~7 s1 d- u# s
let i 3
& G* g6 v0 k) l9 T5 Y3 }6 g( Qlet sum-time 0
4 O9 k. B5 U# j+ Q- T/ Bwhile[i < [trade-record-one-len] of myself]* h6 |8 Z5 `! ?; l% z$ l+ }
[
, q/ y3 h7 w8 D& F' s4 Cset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )( O. n3 R: {0 a5 a" g4 _/ G
set i( N% z6 w% {9 ?2 I- U9 m: q2 a
( i + 1)
5 V; }1 u$ G2 R: f
]
- O: b0 J$ B$ Z" x& O- F* ^* e; xlet j 3
) a/ r4 d/ }8 b  D' o% C4 O0 Flet sum-money 06 _: `0 o, P1 `2 y8 |
while[j < [trade-record-one-len] of myself]
. v% K( S: _% g* K* c. O0 r( R[
" m" l0 `! v7 x: s7 kset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
+ j. ]8 s/ G2 n4 A9 Sset j
; S& _  c, p/ x+ B0 l: l+ H% r' c( j + 1)

4 \' T# j0 g  [& h$ \]
5 l$ P; p, a# Nlet k 35 ~8 s8 S3 B+ K; X
let power 03 D9 H( r+ V7 }4 k9 f; i
let local 0; `/ S0 `& [8 Z6 n; d. o
while [k <[trade-record-one-len] of myself]
0 p0 x& u8 L# e; E[
6 J! b( m: p7 X5 h9 @* @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) . \4 {; q7 d4 S" [& c, H1 i
set k (k + 1)8 p7 }0 i" R7 z
]
. k1 }+ R+ ]8 `& T1 k" w- rset [local-reputation] of myself (local)& G% f. O# a" j6 x
end+ Z% ^# q4 ]$ m. F% m0 `8 `+ |, I

! w" ?4 z* b4 Vto update-neighbor-total0 [& @7 e6 g& ?  R1 G
" h0 V# p/ m# |8 G. o# Y
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
+ C8 m# G1 k5 d3 m5 Z2 z/ S5 Y5 B- q' i8 Q
! h" i6 h( k. \; ~5 W. s
end
1 ~& @# I1 o+ S0 }1 Y
/ V* N0 z# W8 B4 k: ~, U* ito update-credibility-ijl
* ^$ X" Z! Y! j/ T/ v% A+ t; l7 n, l' |" F. m
;;
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。1 T# A7 n: V3 g: \
let l 09 X3 @7 @# \) C) Y$ u# |: S5 c
while[ l < people ]
3 p6 {, m" W) c: o5 C# X. o" N1 ?;;
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
) A4 r) y; J, T4 j+ w1 h[
1 U: m; F) }( E+ t8 b8 S7 o. d* U. Dlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
. }* {6 `. p. oif (trade-record-one-j-l-len > 3)" P1 S, V, W& n0 u* m
[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& u, j- L$ x, K/ r2 w7 O7 ?
let i 3( |; m( t0 |3 m1 z/ M
let sum-time 0
# @/ q: Z  ~( d  vwhile[i < trade-record-one-len]* z0 O6 `2 _# M2 m
[
' Q7 E& j/ Z7 f. l& `* fset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
8 A/ b6 V6 d) O* Pset i/ I7 |6 q! l) A
( i + 1)

* g2 E* C1 R3 a6 q]9 Z* i' G6 M* ?4 ]6 W
let credibility-i-j-l 0: M* ^0 S# O( h9 C3 b; [
;;i
评价(jjl的评价)
/ T, N9 ^3 S, l- ?' slet j 3
: a* v; F! t! u# qlet k 4
6 y5 P; M8 X1 k3 U8 B- w: Iwhile[j < trade-record-one-len]0 ~" F5 Z4 m3 p- ~; X$ _  U. [
[
& p9 L: q( ^( A" ewhile [((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
( u2 X' _- }/ ^7 U3 }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)+ w! [. O% }  \8 o# L; K
set j
" M, W' i7 L9 P& {- F9 X5 g5 l$ B( B( j + 1)
" J! Z+ J6 `% o0 _2 Y2 a
]- ^) c: h0 E, l2 {( \1 |
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 ))
$ T% |0 }! Z( h. O
- k+ y" J( _* N% C- J
, p9 ~6 ~8 L3 s9 \
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))5 V6 {- p* D6 s( S6 z% \! j& d( u
;;
及时更新il的评价质量的评价
, @5 [; J" T' f1 }. h% `set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
. U5 B& h. {; E2 [( Fset l (l + 1)
. e0 Q/ X1 _2 o6 M. ~& ]]
+ F4 U! o% f& T# G& k' rend' Q/ H0 \/ ^: J, S
+ X) v4 g+ ?/ V- |0 K4 ^' _3 a7 i
to update-credibility-list  b4 t) C/ T% B8 Y8 n
let i 0
( b/ v7 N0 o  U/ X9 _while[i < people]
. Z4 O/ g4 U3 H" Q8 ?[- [' `) j% W3 }, ?$ O3 z
let j 0" g% A8 G" j+ d5 X  {% M3 W6 y5 A
let note 0( @! A8 M1 I8 S8 \! a0 R6 m
let k 0
) A% x8 _, F9 A7 d8 D2 @;;
计作出过评价的邻居节点的数目, j  X6 q: m" x+ F
while[j < people]( J( J+ h/ _0 W+ R( l" q* ^
[7 n2 [5 O/ T  o7 ?* G  E- }4 o
if (item j( [credibility] of turtle (i + 1)) != -1)1 ]& l6 n" B. k1 e* W3 `
;;
判断是否给本turtle的评价质量做出过评价的节点
9 x# @% g# v5 t$ c/ F3 ~/ ^1 ^: T, M  N[set note (note + item j ([credibility]of turtle (i + 1)))
' i3 o. e6 z9 G/ n;;*(exp (-(people - 2)))/(people - 2))]

. E5 w' _9 ^: W, |5 i" Gset k (k + 1)
4 a. l) A  P% ^3 X+ _8 s]
$ V1 _, }( L) e+ mset j (j + 1)
* Y4 t9 y/ i) I]
' d& q; a5 J% o1 p& b1 \set note (note *(exp (- (1 / k)))/ k)
% ]! j4 Y) n& U* p# {" e, oset credibility-list (replace-item i credibility-list note)3 t; D7 F5 N8 _
set i (i + 1)
% H: k# k& W8 W6 b' x7 ^3 B3 e]8 H! t2 J. n2 M' H
end+ }" Q  J; O2 V6 A) j
8 B; A8 Q9 J1 I
to update-global-reputation-list5 g2 `" ^5 U! ]) Q
let j 0
4 J8 b+ Z) ]$ {/ bwhile[j < people]
9 v# X9 M0 O, |& i6 [[5 T3 ]7 d( k! i$ L' k! c, K
let new 0
. J  t# ~% f, R0 }! T7 c( v$ c;;
暂存新的一个全局声誉
" x" D# E$ I/ ?1 elet i 0
7 H& c( i) D) |% ]/ {let sum-money 00 f% B3 M- c+ f5 |! B
let credibility-money 0$ Y4 P# f  w2 J9 I) J2 e
while [i < people]4 S& u3 |: Y: J) C
[6 @: y9 A7 M( b9 ]& i
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) f5 r) q% w9 P( N6 n1 S) R
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
5 k# I7 V4 N) K5 A0 l& O2 B! [  C. ?: Bset i (i + 1)* `# V& q3 m& b2 q) ]
]+ {# Z/ @! _% R) W9 x. m
let k 0
  G5 N/ S% d. R7 j- O  Clet new1 0' d  G: j" H3 e& ?
while [k < people]. E, K9 F( l5 I1 M& M; d
[# y7 i$ B; M# _3 W* R5 r
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)$ y. \+ H7 d' F' n" D
set k (k + 1)
9 E. z2 [) s" a! s; B]
4 w3 S/ M$ C1 e2 u/ Rset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
+ W$ K" N4 G( G6 F  qset global-reputation-list (replace-item j global-reputation-list new); ]+ L  e4 f* R& s  X2 p6 v" a; ?
set j (j + 1)1 `: `  z& h. o6 b
]  O, x/ z" G. w5 p8 }: V, b
end8 Y& E5 u/ R1 V: K9 \

- W. J- I0 X; l# O+ W8 u( e4 f5 T
2 n; P* c0 i  B4 Y8 p* d
( o; G  g7 _* u  D$ S2 Jto get-color
; a8 Z6 u2 o# q, C+ F; m" T
1 M5 {0 e; G- dset color blue

5 r. ]) L0 N2 e8 z. H) J5 lend
5 T/ P. C& l/ d
- k/ G' l& V$ `: S& {to poll-class
9 D2 H2 |$ c% y2 ?3 tend
* W# e' g" m6 `7 y' U2 v
  O4 f) a+ f& O- qto setup-plot1
# D- p- R8 J* g4 w5 }) _
# A+ o: f) s* @, \set-current-plot "Trends-of-Local-reputation"

( H2 D) b0 I6 `" w- M% N
: |9 P' |+ V1 x/ W1 _" pset-plot-x-range 0 xmax

. d, {- g/ [0 }) ~- ^
8 X& M4 `8 _, ^1 {, B6 oset-plot-y-range 0.0 ymax

- f* @3 B9 c; ]. `6 ^, N6 m9 ~end; p0 a$ p7 b9 C0 i7 x
! q( w" `7 k/ |- N+ j( a
to setup-plot2
, I8 K# d) k1 T/ [) {
8 M4 z/ M  ~! E5 K, l9 V4 yset-current-plot "Trends-of-global-reputation"
' {! u/ Z0 j. G9 t. n: @3 [
" s, i5 @8 P0 ~5 l2 R+ u
set-plot-x-range 0 xmax
0 d: F- K9 Y. I! y

4 }, m/ A+ O3 [+ U5 [8 Z/ wset-plot-y-range 0.0 ymax
4 G7 O+ R- b- B+ L
end
6 N* d) C9 s; R0 m2 s. t+ U
- s% W, v. ?7 z# {to setup-plot36 {0 N7 x. h7 W" Q$ C

7 C. Q) L% g& j( {3 C& K# Y  ]; Zset-current-plot "Trends-of-credibility"

7 V7 L4 D" Y9 D6 G+ o) ], T! U* w3 ^8 }4 k3 l+ p4 z: v
set-plot-x-range 0 xmax

4 M5 G- H; b1 {2 T
2 q5 r* f# _' G/ Xset-plot-y-range 0.0 ymax

2 Q# R# D3 r7 p1 @8 q: ]. _end
2 Y4 R' S3 Z$ k5 m' ?% z6 G9 F2 U. A! j5 u# _/ w3 x$ }
to do-plots
5 g* y7 C& V' y, K2 s% y3 Vset-current-plot "Trends-of-Local-reputation"2 A8 w$ d7 W  g3 H2 ^
set-current-plot-pen "Honest service"  @4 y; o6 u, b1 E/ f: B( ?" w. C
end8 i9 m' S& V/ T( e
3 O$ v3 W2 r; Q# S$ v% ]
[ 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.
# L- {( J2 F4 [, h1 g6 U4 c" M6 \( p* C- p2 S7 v
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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