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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:. c5 [4 y8 w7 K5 n
to do-business
0 k+ W# b& `3 u2 ]& U/ u rt random 3604 W) h" Y4 {% o3 {; y
fd 1
9 W5 d, G- B7 R8 y1 r8 Q3 n' ^% S ifelse(other turtles-here != nobody)[
  E5 C7 ?1 e, B& O+ G   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.
0 X% x8 M+ m) F9 o8 A" r! A   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
. x) z' S0 Q/ j6 N  M   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer( }1 B7 {6 f! a: [3 u; |; Y5 b( Y$ C
   set [trade-record-one-len] of self length [trade-record-one] of self
' \! o4 C4 X$ Y5 {# o4 G. X   set trade-record-current( list (timer) (random money-upper-limit)); A0 L  E: @- S

) K# ?5 W+ H/ D" ?! }问题的提示如下:4 U0 Y' ?2 `0 j+ H1 n/ x4 k

9 c. C, a2 k% q( ierror while turtle 50 running OF in procedure DO-BUSINESS
2 S/ s- c4 Q, ]& k  called by procedure GO
& g, T: H" T. J  x4 x& }OF expected input to be a turtle agentset or turtle but got NOBODY instead.
' |/ \# v. d) @
(halted running of go)+ d4 m5 j* i5 M8 Y5 B
+ f7 E: ?  z  U1 U* p2 \! v9 L
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~~( J3 q5 K) a4 C
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
9 x, Z) ?5 I1 ^* |2 vglobals[
# k- r. L6 s  v  j! Hxmax
3 x- l& D% S$ h6 ?, Cymax( e4 H8 m; X9 a% k
global-reputation-list
' s. j/ }) Q" c
. y7 v0 Z9 i) C! \- Z3 s; t;;
每一个turtle的全局声誉都存在此LIST
4 }0 r& K( t9 y' M1 E, b- ~- acredibility-list2 _2 |; j5 e6 v$ O- p1 C% I+ g: }: U
;;
每一个turtle的评价可信度. l+ }0 [8 k0 j" F& W" c
honest-service6 E+ C. Z% U: Z; c! `  ~
unhonest-service0 c5 q  q3 X: }! ^5 i" H( R+ _
oscillation; L8 E! ^' B- }& {3 G7 B3 X. H
rand-dynamic0 q+ _! B; R' j, i) d
]
1 \& F7 x# N5 s5 M8 ^) W1 r+ k' Q5 n. g3 K( x
turtles-own[
/ E! s0 p; [/ ^9 y- D' |trade-record-all
5 W5 c2 a. v9 \, M;;a list of lists,
trade-record-one组成3 x, U' P3 U! b4 f8 c
trade-record-one5 w6 z7 O: [1 {. p0 \
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录) L, b" T2 s- Y" Q8 W# L: U6 D
8 ]$ F% n8 x; t: A* I) t7 Q
;;[
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]]
: x: K& B4 |& a8 ltrade-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]
9 B) g% W5 y1 Y; |4 Q  ~$ 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list0 @0 T4 a( k% }3 Q3 r( W& a
neighbor-total2 X3 W) u0 v0 S, D' ?  P3 B
;;
记录该turtle的邻居节点的数目! B( d  ^! j' G! {
trade-time
3 t8 M3 b8 [# b& o! {. J;;
当前发生交易的turtle的交易时间
) a$ _9 K6 g6 |5 }& n) c1 x$ w* zappraise-give6 q4 v, m% u* h  b# `
;;
当前发生交易时给出的评价
& Q4 ~+ P; c# R! Cappraise-receive
- H4 c0 P" p, n5 h+ W. t;;
当前发生交易时收到的评价6 E0 @4 E+ ^2 V  |+ q( Q
appraise-time
8 e9 C8 {' f% F7 V9 z;;
当前发生交易时的评价时间! }3 ^  y& t( Z: _: o' C
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
6 z/ B  ~+ W4 A% [8 jtrade-times-total
3 T9 Q* d4 @* W4 w/ U- K( I& j% n;;
与当前turtle的交易总次数
0 M1 f2 F2 F/ x6 U7 ]6 U+ Y5 w; Btrade-money-total
1 f3 ]; B! _1 n5 g% o/ F- [+ T;;
与当前turtle的交易总金额9 d3 ~7 m% L6 b- ^. Z! ?
local-reputation' g5 n4 G4 \2 Q+ P0 N6 P
global-reputation
. R$ H" ?$ w7 {$ s, W/ Hcredibility
. N6 w; W) _9 I: x;;
评价可信度,每次交易后都需要更新
& T' A5 r( i, q7 ^  W% Mcredibility-all- s7 e- M& B. D% f
;;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1 {$ K7 \: \# a2 s7 i/ j

1 v3 `' f+ Z5 D- N; ~;;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0.55 O0 r8 |$ Y& ~, Z, o7 G
credibility-one! t3 \+ a3 K+ E8 ~6 U: Q! i: }
;;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* ^; A5 A# o7 Z$ X
global-proportion  a7 W8 F7 X* R5 _( o; ]% B
customer
9 I1 W2 G* B& v1 B9 bcustomer-no
; ?2 W9 S: p  H; O1 ^trust-ok* {8 y8 @. n' h3 r
trade-record-one-len;;trade-record-one的长度0 I" x# J0 p# c$ B
]
+ U; v* _. F# g  ~
) `; Z0 b, A, y- S8 t+ N;;setup procedure6 F, q" `% x! z/ P0 D" \8 V) N
# g( H% v: R5 g% w. y- ^
to setup" p) K1 `) [: x4 P' @2 Z( G

8 e& |; u$ y5 F. ^0 K, N" Fca

4 S+ q' g- N1 I7 \" M$ ^+ u: b: l6 J, f$ G; y: K
initialize-settings

7 g# _! G/ V* b9 I( Z
6 G. o) Y8 |/ ]crt people [setup-turtles]

0 c- w* E  @4 l- J) W2 W4 i2 f: X6 a, [2 ]( q$ c  H& @# L8 }
reset-timer
& F. l; J" A+ s" X- d, S. l- X% e( F
. C* u0 G) J1 ?( K
poll-class

, t4 Q4 ]6 G6 {" ]8 J* H
9 R. u. M/ o+ T  qsetup-plots
4 T9 J; c. P- Y/ u- W, ^
$ K# s# t& @4 c( i# Y
do-plots

1 _) X0 q# B6 l$ t+ cend4 y0 m1 B' J, j  H, w

3 e6 a4 G& U' |( I! ^$ G# Zto initialize-settings
: S+ B1 t6 x, {4 e7 T& ~, y1 o* k' m
* T3 f/ y4 V: Pset global-reputation-list []

" d+ i$ E8 V1 X7 F% o8 e* n' k7 ^
set credibility-list n-values people [0.5]
# U6 v* Z4 J! _- a- y1 K- q! e

7 H/ ~" K% \0 L+ t& jset honest-service 0
7 C/ k" m: F1 V; A. H/ C

9 q8 E6 I' W4 D9 ]set unhonest-service 0
  Z$ x& e2 e6 h1 n) a( I
" S* q! b/ O" Z
set oscillation 0

! _. n) c( \# T1 L' j
, ?, X  j: w+ Z2 S6 Jset rand-dynamic 0

; U0 U8 w+ ?6 o+ j% uend1 p8 u% C- _5 h+ w  H* [& P

2 O  D8 q+ w8 Z) e2 Yto setup-turtles : O- G* x; m9 q9 c- V: X
set shape "person"3 p4 h- M+ a1 b) T
setxy random-xcor random-ycor0 p( q' N/ G8 t0 @( C3 h
set trade-record-one []2 d3 q9 G3 [  P2 Y5 A

2 c: t) x* U. v8 Uset trade-record-all n-values people [(list (? + 1) 0 0)] 5 U; y0 ^) K/ y; G4 d

4 Y4 t* ]% K7 ^) Hset trade-record-current []
9 A  J" K. P4 Zset credibility-receive []. F. q, ?. r$ L2 F
set local-reputation 0.57 a6 `: b6 j' \2 r$ e7 K3 i
set neighbor-total 0* E8 F9 d- ]& ]
set trade-times-total 0. c8 M9 r& v7 O: l( Z$ w
set trade-money-total 0
4 e% A# x; e8 R5 O' x& G# v8 ~set customer nobody; m5 H+ f: B2 E  `2 u
set credibility-all n-values people [creat-credibility]
* K! x, C/ \9 r) ]# ^3 ^  _set credibility n-values people [-1]: E  S$ [) F7 t) i2 I
get-color
0 e4 c5 J2 C# F+ ~* w
& p1 D) w) N" D! F& U' M
end
% p: r$ T0 q6 i7 |/ [4 p5 c7 v& W3 B, q0 h
to-report creat-credibility* B- k& e" s& I& M
report n-values people [0.5]
% u8 D) F$ P2 G: k* Uend$ ^9 @8 y1 A! [, g# A
0 j, C' v! ^; B/ h% l8 H& Z
to setup-plots
( ?# ?1 I4 v- y2 d/ u( Y+ F" u
% C+ @. h; m7 H( B* D) z2 eset xmax 30
6 N1 J- ^) e" ~- I

* L+ ?- i: `0 h% u- Qset ymax 1.0

" _# x; b5 o% n3 }& [+ j% i6 V* J- G: k3 m
clear-all-plots

4 y+ M; w9 g- Q/ V5 ?
9 W  [0 @# K4 x. ~9 P+ ?9 [setup-plot1
' s# M9 j; u! s2 y' n

% k8 Z( |8 A; f4 {1 gsetup-plot2

. ^( w4 K. G9 K# c, v
3 e* a+ A% s/ hsetup-plot3

: Z8 X+ Q4 e# ~2 `8 _* M) tend
% O6 z% t) w. ~2 t, `! D: u7 W4 w8 ~% d3 W, y
;;run time procedures- p  v+ `+ s& Y

" U8 ]) H4 y, X- i: M6 U$ lto go
" v$ g6 L$ Z# v+ q, X  r, h2 D& o" }5 q0 c" h
ask turtles [do-business]

+ F4 V8 y0 M* O* r: @1 j9 Mend; B% }5 O! V9 }* E- ?: U; ~
" j5 A6 _: i7 T! A7 S
to do-business # z% c$ @6 ^0 \) g

/ s, n$ `. G# [$ A
8 o2 C( ~9 j, ^6 ert random 360
7 w* M9 C. R2 `4 k' }

% Q( j" z8 [* E4 b; rfd 1
+ T9 Z. `7 v. d# C  z. y

) N0 ?" g. Y2 K# [ifelse(other turtles-here != nobody)[

( F7 T9 Z" p, R6 h8 g+ l' D& @5 t% d( [& X) k
set customer one-of other turtles-here

4 ]# J' J- I' ~/ }+ Y
: k+ M' ~) G, V7 H, j;; set [customer] of customer myself

% ]9 l- Q/ f( B. R& l7 u( U% X5 D7 F- M; O  U+ h0 S
set [trade-record-one] of self item (([who] of customer) - 1)
  Z  o* j& b. c7 R2 v- W/ }[trade-record-all]of self* ?+ ^; d$ l& m" C8 m* s
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

" l1 e& r! n3 r5 I9 u
6 I% O/ X. D1 i& [3 P) g; Jset [trade-record-one] of customer item (([who] of self) - 1)9 P$ j7 P. G$ d* W( t" ]1 v
[trade-record-all]of customer

" z. E0 t/ s. W. o
: k/ b9 Z  u# G; C' x& O# kset [trade-record-one-len] of self length [trade-record-one] of self
, {5 |+ |! {3 X0 @. R

; |! m5 x3 s" r0 ]set trade-record-current( list (timer) (random money-upper-limit))
3 S1 @  @9 X2 g  J) a0 B) A  |
5 l( q! t2 Y9 u  s
ask self [do-trust]
4 t9 T' {- U  d5 B;;
先求ij的信任度. P& o# H: H: N( l
$ R& z+ C: E1 M! V* z
if ([trust-ok] of self)& Y. l+ j$ I: o  p7 L$ M1 H0 F5 P: r
;;
根据ij的信任度来决定是否与j进行交易[! C+ v$ j2 c, l/ k# ^' r* ~0 o6 N4 e
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself; Q, F( M3 y# z# J  `$ w

+ I; c  D& B. s# v" i8 e* H[

0 P0 w" y+ S" `0 K$ m/ {; g2 m! _0 X, w$ }: Y" h
do-trade

. F! O1 e8 ]: p. w+ Q$ [+ b" H
* M  N- e6 q7 L. ?8 f$ e' Fupdate-credibility-ijl
7 b- G1 u$ L" _1 d

2 |8 |6 g% ]! p3 D$ e/ fupdate-credibility-list
) _" t4 c0 T: t" T

0 w6 M9 D8 {6 D
& L# Z7 Z8 I- W" x! s9 f. P; Tupdate-global-reputation-list

* D, ]& u: {+ f$ r2 M% r( _  }
# b  Q1 a7 J% v" U5 l- dpoll-class
4 q( X  P2 f: a7 Z9 y5 ?3 A% q8 h

. i% w3 q0 [/ D; M3 b5 {get-color

3 S! s! Y/ ]9 e) A3 \  Y3 y; `  _1 |& {
]]6 U+ f0 T7 t  e( v# d6 y" k
, ^5 A% v; u8 _6 p0 P/ p( V1 Y
;;
如果所得的信任度满足条件,则进行交易
! i6 q6 C' K6 m# O9 t* a" y3 I) ?% t' K- b1 [+ M  c
[
1 n* _" u% v$ i
9 c7 [- Q3 L- g9 T& u
rt random 360
7 T3 y9 q" Y# F
+ a  G4 m3 T% ]/ G
fd 1
+ r4 K- m- p$ n3 C6 w

8 ~7 h7 L# }- \  K5 Q2 J]

4 e+ @9 P' W8 t3 C& o# d0 M: R$ L; a5 D) `3 @$ G( b/ l1 Q& Z
end

) V# j: e' }0 _- k' B1 {9 F( j8 W) i/ N' S! }) S8 o3 T. s
to do-trust
" t* R: ~4 A) U+ F* @! W2 Tset trust-ok False, J  f7 }- H5 l* H8 R( J6 P8 P# T% T

9 u, d8 ~! I1 h7 a; K3 k6 F9 P

% C/ M, V0 w- M7 qlet max-trade-times 0
# K6 n! w0 o0 N2 P" gforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
" M2 m" G' o" l! [( L, glet max-trade-money 0) s) e2 L& a0 P2 Y' `/ T: @
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]7 W) E8 V4 \* o7 A6 I0 l( L* Z
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))# N6 c2 h+ p5 k5 _/ G0 j& X

9 n/ ^, F, K/ _
# e* b1 n5 d/ I$ I/ t
get-global-proportion# H4 v* q0 o: k+ A+ Y
let trust-value
7 ^0 E/ l2 @1 l- F  b+ Flocal-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 R8 c( Q/ [  l6 O1 P- {3 t
if(trust-value > trade-trust-value)
* C! v) }8 q* h- `( P# a0 g[set trust-ok true]$ g6 d8 Z" r# C
end
3 a" n6 W5 T7 ^) ~9 V, m3 `+ D- p4 B/ N& X
to get-global-proportion9 `( Z& ]% l) F/ s# }# `+ ]
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)4 |, j8 T1 S  i8 R+ i! @' Y2 B1 v" I
[set global-proportion 0]$ P8 N: i+ N  @$ Q
[let i 0
6 g( K, u$ s  ^( A# ulet sum-money 07 A- P8 o# w' K& e
while[ i < people]
2 T- m6 M* S: p1 d) S1 q[, p4 P$ G( H+ J5 ^6 ]
if( length (item i. @1 o0 [. z; `( s
[trade-record-all] of customer) > 3 )

/ L4 z3 q7 }( u6 O[) Z  f  L6 q$ B& P5 _, L4 [( \4 x, \
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
2 D4 }/ z! i) L* I( Q8 g1 e]
: p0 c+ m( f" n# D8 Y" |3 q) o  \- p]0 u% j7 v1 y; J4 U  v; f
let j 00 k( ^! P/ R3 T  b2 T8 e/ n
let note 0% I" t. f, s% g# N' }
while[ j < people]+ D2 |* O$ P! Y0 A1 V
[
4 J+ I( f8 k# {! P* jif( length (item i+ [4 Z' L4 P& H
[trade-record-all] of customer) > 3 )

4 {4 f, w. ]1 R5 w2 }( [0 i[0 |: q  l& \+ j2 h4 J
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
8 E; x) A7 {) s- H; m[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]& n* S$ @, X4 d/ {7 ^8 L9 x
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]7 Z. L% }, Y- a/ u* x5 _1 I
]6 }3 U. j& B: H# Q" c) R
]
- `- M3 k% C, S7 [set global-proportion note
! h, S' `& b8 t/ o' d2 N/ z! h]5 ^) I! ?: Y# w
end
0 T5 k8 J. m* y- G) O) M  ~' [) Y# H$ ?: l8 R
to do-trade
, J: L7 K" l! u, p0 ?, o;;
这个过程实际上是给双方作出评价的过程& {3 o. ?! M, l8 l& i
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价0 D3 A! r3 t; A' j  u
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价4 V: J- t# y  _! B+ Z- }0 E
set trade-record-current lput(timer) trade-record-current- c# B: [: z7 _5 ]! v% a9 C
;;
评价时间
; h9 O3 r$ a: F' b7 Vask myself [3 v' s1 ~* I' `/ x& r; b
update-local-reputation/ u1 P& z* u* v7 }: H1 q! ~/ |
set trade-record-current lput([local-reputation] of myself) trade-record-current; y+ v: s$ N5 r+ [8 G8 k
]+ r' X4 v6 Z  g* m; Z4 c3 W
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
9 z6 J3 L5 G: F1 ^& U;;
将此次交易的记录加入到trade-record-one
8 q0 y, N) t9 d/ S' X4 _set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
( k) Y; i7 c/ M, {let note (item 2 trade-record-current )% z) ^8 K8 w: ~9 H0 _
set trade-record-current
% o& [9 z8 Y% [(replace-item 2 trade-record-current (item 3 trade-record-current))
4 {! J$ r: V) W0 {8 {4 k9 Z3 F
set trade-record-current2 X) E$ X& \5 S2 n
(replace-item 3 trade-record-current note)
5 t% m+ t4 O3 S: h+ ~, k; t
" F/ P: W1 u3 f9 s1 p1 M1 R5 ]5 o

+ ?* P( K* y( `* Task customer [
1 g' G2 i6 h& R3 S; w. _update-local-reputation* P" p* ^' n1 z  O& H: ]: }1 X
set trade-record-current, M- H$ i9 w6 L( b$ ]0 s+ z
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
3 j1 [8 [& e  v/ q$ u( I/ D& d. ^: N
]
! a, d: i+ C2 \* y* a
. d$ X( w6 ~- d+ j

% a; O& `7 o: u3 Uset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer' ~3 o, g2 ]: A; A7 k

. y/ x. \# K! R5 r0 @7 Kset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
$ F- C% S$ z: B$ ~8 W/ Z;;
将此次交易的记录加入到customertrade-record-all2 E( A, }2 z; l$ ~
end
3 l# ~4 k6 W" c- M( t# L, X  f" Y/ D! P' v" G" I- }) y3 d7 X
to update-local-reputation' ]/ C1 p2 W/ V5 m" s+ z
set [trade-record-one-len] of myself length [trade-record-one] of myself
5 [- _& \9 B  n; r4 h/ V- T2 D6 |% [
7 _: y# v: d* @. k: _9 B) ^1 C5 @' l( p! {' h% a$ A5 t
;;if [trade-record-one-len] of myself > 3

1 q+ I7 O8 G- \" _# k. a! H+ w6 Nupdate-neighbor-total
+ H2 j7 A) `& J+ B: t4 j;;
更新邻居节点的数目,在此进行
8 _9 o9 D: o0 d2 P) V4 Zlet i 3# v9 x" u& y% z
let sum-time 0
% f4 D9 w1 o! `3 u, ]% Gwhile[i < [trade-record-one-len] of myself]$ o: @( v( @9 d/ v: _# d# _7 O, r, [
[2 Z; `5 V6 w) h: P
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
, _6 i' n' u1 j9 ?* v8 B8 iset i
5 S' s' g3 ~' F+ i: ^, B( i + 1)

) Y, e' s# J# @]
) e4 x( L" g8 Y; o' mlet j 3) l+ R( L2 }, [
let sum-money 0
% w  m2 a2 D' iwhile[j < [trade-record-one-len] of myself]3 _4 {- d0 ]6 r. I, r. ^
[6 K( h' y& g, i& M1 E
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)8 T4 K8 a! n& D! M* @, J, T
set j0 e. N, l3 y9 V! z) [
( j + 1)

; u; |. b$ _6 e3 W]
5 T2 F) x' |6 K% |$ n5 T) Ylet k 3
* u. x' M0 q6 P& f: `$ Alet power 0
* R( p% i' I3 y1 \let local 0
. f& ?; c; u. B& Twhile [k <[trade-record-one-len] of myself]
% G- m9 D9 O5 S$ {7 q: S[
6 J! Y; u/ H$ {+ L* t0 F% hset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
6 m& ?* U9 [* j2 |' {, _set k (k + 1)! g- ]3 [# A$ _- {4 s
]
0 z5 M  {0 M7 x- a# iset [local-reputation] of myself (local)+ c) P$ O/ q; F: V: q
end
; ]: g- a- X2 j# h  F- f
' Y& K1 A- l( w$ r& M" Ito update-neighbor-total. B1 D9 O* z' H

- f7 k8 i1 r2 D% q* `$ q0 Uif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]; }# f2 j0 I% o$ G* |

, J6 X' \7 M/ m& h

/ R* `8 `2 }7 D( N+ ~( n4 C8 ^end) D  m. x% a5 m- t( W; T

. ~7 l, g. H9 h+ A9 qto update-credibility-ijl
& A8 d5 H/ v. Q1 s. X9 {  S% `7 Z5 `5 D
;;
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 J5 t! U$ I9 X* Z
let l 0- O8 [3 D( p6 n) k4 S* }4 Q
while[ l < people ], I/ p& l6 L- B0 [' 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
' Q: T- d# A% \# D5 j& _5 l[( D3 n  t# k5 ]9 e  I6 w
let trade-record-one-j-l-len length item l ([trade-record-all] of customer): w4 C/ u( R: \4 V  [" @& R& e
if (trade-record-one-j-l-len > 3)
7 r; A' n8 {/ s6 X: ?& G+ l[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 d. \. o. q6 B, {' slet i 3
' ~& K' E& O/ \8 Ulet sum-time 0% C6 y; p3 a, k$ Q+ t
while[i < trade-record-one-len]
, i; O' F  s3 d# c2 ~6 R[4 I4 N2 x5 ~" {0 C2 J# D2 e
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ A2 @$ s8 x' @* aset i
. N4 Y3 h& K0 p( i + 1)

2 K$ Z3 k; z* V* S]5 ?1 o! _5 V5 a7 g6 s: Z1 w$ R! b
let credibility-i-j-l 0
9 p4 Y! N( `# P& w% g$ `;;i
评价(jjl的评价)
! [, |" Q/ w% |+ T, D& `let j 3+ [7 f$ ~1 x( j6 s1 Q
let k 4' }" d( m( O8 c, l$ c
while[j < trade-record-one-len]! K" d! E$ v' w9 b/ f
[
" X6 Y8 k. S, u# J, wwhile [((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
$ f3 H) L5 e- I' P/ T. Hset 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)
& p* L1 j  `: z& H& b. Nset j3 V5 i- F1 P; _
( j + 1)

4 w, D$ W: V4 @1 B) @8 G1 [+ \]
7 g* J5 S1 `& G1 G% g& ?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 ))
) T9 q3 J+ j4 }0 `, k' r( S1 l7 @/ n8 b. A. j+ P/ o
5 U% Z, [. e  ?- }2 k9 c
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)). u3 s3 W' b; x6 a
;;
及时更新il的评价质量的评价
% N9 u9 b' r, h: }% Q" Iset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]: Z5 {2 h& Z) q9 E' Z5 |/ G$ E" G
set l (l + 1)
0 h& X( z% [: C2 B( m6 g  i7 v]2 U6 y7 D, j: d9 [' y8 h5 s
end; C: l% B. J& D% ~$ t7 f
, O% t) i. S, l3 h
to update-credibility-list5 `, w  m" y6 q& F- `7 W0 _' T: w$ B
let i 0
8 j+ J7 ]7 [- `* ]" ?  p1 [" ?- ywhile[i < people]
/ `  F" F; E( I/ ][
% E- t9 M9 N5 ?/ x; zlet j 0
3 Q. g9 L2 A$ g$ Plet note 0
/ G# V) {  ]% g9 ]2 }1 clet k 05 `- Q& q4 F. \
;;
计作出过评价的邻居节点的数目3 m; E/ ]6 s$ c, j; S7 {
while[j < people]4 a( S1 {" Z' g
[
) y) I0 b3 F# x' fif (item j( [credibility] of turtle (i + 1)) != -1)
0 B' ~7 s0 v. a1 o/ m;;
判断是否给本turtle的评价质量做出过评价的节点: Z- @. X7 n! q1 v
[set note (note + item j ([credibility]of turtle (i + 1)))
- R2 K( `* M; W1 V, S;;*(exp (-(people - 2)))/(people - 2))]

8 d8 K6 g- v( R: @$ r* Qset k (k + 1)7 L& O: \5 o, b' M2 _
]
) n3 t- p9 c4 z7 \# Zset j (j + 1)
4 l: e. \' ?; [5 h]3 z" G" u2 n% r
set note (note *(exp (- (1 / k)))/ k)
4 _6 |+ e2 q1 Bset credibility-list (replace-item i credibility-list note)* k1 O8 Z$ R5 V
set i (i + 1)/ [. ~6 p- i* U- C
]9 D6 H) t) C( M8 U& c6 t0 s
end$ @% Z) P' F8 D) q1 j  u
) ?# ^' z( `8 L) @) ?
to update-global-reputation-list2 v( Q! ~- f3 f$ k4 r- ~
let j 0
7 ]+ m) ?! F. g: U, y; |while[j < people]
2 @/ f; e. A- p6 Z$ t5 C- S  @  j3 w[+ @. A$ ~9 ?  y
let new 0* C: b" [( t9 B5 P8 V% T
;;
暂存新的一个全局声誉1 n3 J( |0 O" ]3 k
let i 0  P/ k7 S- _/ R; V1 O
let sum-money 0* h# n: s7 O& {' q7 F
let credibility-money 0
. M. u0 t0 f2 f/ e3 Wwhile [i < people]- u2 \- x5 m3 B
[
, r* N, S6 i9 B" uset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
, ?2 ]+ T. U7 q4 [' ~) Gset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
4 C  H6 ]6 L" h2 Nset i (i + 1)
+ m% ~" [, d) [/ c" ]3 |8 U]) M$ {" q# r& x$ ~5 f
let k 04 C/ g( Z0 I7 Z" I& |3 W2 M# _
let new1 0/ D5 |& q/ u0 h) I+ ]* w
while [k < people]0 d+ S4 o5 I5 Q! V+ e' U, Y
[
6 G3 D$ X  k; k2 _. L: sset 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)9 \7 Z$ I" a/ k
set k (k + 1)' m* T' ~; _0 \9 L  B' V6 R% Y
]
2 {: s8 g, {: ^* w! ]set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ) b+ \* _6 i( t) K/ W; ~' i
set global-reputation-list (replace-item j global-reputation-list new)% C/ a0 g. h# y1 K9 ?
set j (j + 1)
& F* J- J5 a% ~% H6 Y2 k+ U]8 T8 Q' x' O" T
end8 ~  Q2 }5 w2 r# o
+ W+ T+ y9 f. P- b" g
5 C' H, A& B& C6 Y

4 w6 d/ ~; a" `9 j9 R9 E; Y3 Pto get-color
9 d3 R& A1 e  K! \
  E7 M5 a; x$ E! q4 Y5 v, {set color blue

1 U$ m5 Y. D: u* i; h$ pend  C0 l3 P' l" G8 D! c
" O; z1 o# H, z) r; i
to poll-class
( d! @* Z6 }) q& r  Mend
9 Z( N8 b6 b) S, L+ t# H" M; v3 [& D4 u8 G+ }# b9 F2 i
to setup-plot12 C5 [  |& R9 k) f  J0 m7 D

  U/ |. U& f) s0 N" }4 Pset-current-plot "Trends-of-Local-reputation"

) V$ ?4 S' a3 Z% u- l/ ?: ~& ^# |" L* X3 \
set-plot-x-range 0 xmax
8 Q7 G% L4 Z/ {/ Z- g

4 A7 V' j% W5 S! n% S4 o& c6 }' |set-plot-y-range 0.0 ymax

, `) V$ E6 q- b8 u9 s5 k( q. Qend
9 o/ S; y' D4 q8 [
  `7 w# `/ O. G/ H" S: W; c# p6 Rto setup-plot2& w# ?+ d2 y- s8 P! r% w2 `% K" d
( z* |1 A6 }" ]! o# M
set-current-plot "Trends-of-global-reputation"

8 B, n: k/ T3 \# D! e' K
5 w: K; D& d- S! Hset-plot-x-range 0 xmax
9 E% D# S% Y  R+ P$ H# g  l6 A* l
/ A( h( Q/ h: k5 v3 i; k4 Z
set-plot-y-range 0.0 ymax
$ {# x$ O9 ]% p
end
1 E; n0 `5 W. o$ i
. G1 g& i6 O4 |" }$ i% wto setup-plot3
; O) ]% d& j* |' P
4 \% m9 Q2 E+ {5 q$ q- `set-current-plot "Trends-of-credibility"
# U% }  x3 f: i& U- s

! y. T# l" [, ^4 k" b" lset-plot-x-range 0 xmax

$ E0 x* P/ ]1 \$ Q9 k7 V- k
. P: Y5 J$ T4 x; Y  Vset-plot-y-range 0.0 ymax

7 V, S( B! I) k7 Kend
$ s# N5 H4 O' Y8 M+ A; Z5 @3 x* X! d; N- V7 `: D* |2 P
to do-plots
% Q1 j- p4 v9 I( w/ fset-current-plot "Trends-of-Local-reputation"
& m' ^* V% ?2 b  tset-current-plot-pen "Honest service"% ~. y6 D+ B- l; R# b7 L8 d$ A
end
! b5 W* }; f+ z5 `; E4 t4 S$ c+ 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.
0 ^2 S' `2 @$ ?  Q
: s2 k4 d0 s6 g* y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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