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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:% `1 a2 Q7 ?% c( y0 L- A
to do-business
: K4 s8 F; [! s' r4 F( L: p rt random 360
& l5 H3 D  B# k2 Z9 K/ B fd 1& l4 G1 d% P: M6 x
ifelse(other turtles-here != nobody)[6 e" C  w9 e: Z8 S3 ^: P
   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." k/ p7 {  L4 v- c+ r4 s
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    . Z+ Y# ~, d1 H$ m
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer$ ~* V, M, o+ K" j; B9 T/ x6 e
   set [trade-record-one-len] of self length [trade-record-one] of self8 J- ^8 j( P9 q% h) W
   set trade-record-current( list (timer) (random money-upper-limit))
& z3 ?6 i; S! u7 \" D; D
1 }% S5 u" ~! W; J& W7 |问题的提示如下:0 u0 ^! a  k4 C3 i
0 }, t& x5 w0 Y4 Z+ v4 b; m
error while turtle 50 running OF in procedure DO-BUSINESS
8 Z* T0 W) E' ~  called by procedure GO! K6 n/ s& c+ ?; f# A
OF expected input to be a turtle agentset or turtle but got NOBODY instead.2 ]( }5 ]  U$ h6 X# r  h
(halted running of go)
( O7 W' K, V" g/ O6 e' T' T" b6 W& X5 ?7 D6 j5 j) o
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~~
, a2 U& H& P2 t! S+ ]  N) b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
; `( Q/ D5 c5 g, y' kglobals[$ h1 J7 w$ q; d
xmax
' D9 y: E/ }: X3 ^+ P/ Aymax
$ ~; g! G/ _5 X" G8 ~% j, Z" ?global-reputation-list
( y6 e- r* z9 f; }3 a! X8 R
. G% a: v/ l/ S, E2 E; r  Q;;
每一个turtle的全局声誉都存在此LIST7 U" Z9 w8 O6 O4 W
credibility-list, j: N4 P2 [/ \7 B8 ~0 [# @. u
;;
每一个turtle的评价可信度; |# Y* C. q* z
honest-service
" F. E. O* w: [) Vunhonest-service: C5 t* ^* P. j
oscillation
) u: a  b" s$ S! Q, Lrand-dynamic
7 z7 G& }' u, H1 i* e]. ?. {3 K5 T7 z+ g! \# [8 M

) p2 ]% K: d1 H, Vturtles-own[  t3 R  n- P5 s% V7 n$ j7 I3 n( d* p
trade-record-all
8 D6 q9 z% ~* i: y* |;;a list of lists,
trade-record-one组成3 c$ _  S, e' k/ C' D; X
trade-record-one6 c  [5 _" n: @! f
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
% U: {* {# {# f; ~/ A" r, a8 J* P' f8 W& ~
;;[
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]]+ C2 l$ }! f3 z9 s5 X$ k* `
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], x, b7 O# I. S# B9 R) C9 `6 Q
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list1 x& Z+ g% }, S2 I6 |0 f
neighbor-total3 N: l2 r. @  P! }: v: j" ?6 D, m
;;
记录该turtle的邻居节点的数目
) g5 R( L% M% otrade-time
$ l) Y' Y. n5 T+ F;;
当前发生交易的turtle的交易时间$ O4 `0 V8 i" h. [* @3 I2 `
appraise-give: L+ e4 o  P3 v) I" T
;;
当前发生交易时给出的评价
' O. T9 V- ^- {4 wappraise-receive6 ]8 \/ D* B. ?  m9 E" r. ~" O: s
;;
当前发生交易时收到的评价2 W( q3 Q* o! H$ X
appraise-time
$ M: z# U3 U) ?" R8 ?;;
当前发生交易时的评价时间
/ _' k4 R$ S* Glocal-reputation-now;;此次交易后相对于对方turtle的局部声誉* _% I- d3 X6 K% d' q! `; D: W
trade-times-total1 l& Z) z# y2 Q2 B# Z
;;
与当前turtle的交易总次数, S% C  s" r. I- _+ S
trade-money-total
  Z9 @9 p0 O- F4 M;;
与当前turtle的交易总金额
+ x; U& ~/ m& F5 ], M: llocal-reputation
+ W' b# `  U) m* t& xglobal-reputation
- s3 v" ?% ^" S2 u/ Rcredibility
3 G+ Y: t; I) T2 V, V;;
评价可信度,每次交易后都需要更新6 O9 \( _/ b, X
credibility-all
8 f: z% l6 u/ M6 N% F  T;;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 n  I3 N. d4 F1 c) N  @! o; h
;;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
) V% V% L4 r; E& o9 zcredibility-one
9 `8 V: J8 g& l: q;;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" T6 m$ q% \. M; i( r
global-proportion5 ~  J* |: `  e- W! n( B7 Z
customer1 w; ~" f* L: ?2 J' N
customer-no& [  k3 n/ X: P! l; M2 \2 a
trust-ok% M2 I6 G8 g8 u( B3 s6 c
trade-record-one-len;;trade-record-one的长度  \* q7 L1 F+ _# j* N$ a
]! j' D7 g' Y3 [7 q0 l8 c  O4 Q& ~

; G1 U1 Z" N2 ~( ^/ p7 H;;setup procedure# R' Z* I+ B5 `3 I& {) Y' t
) o$ {* b) ?- s$ W! s  I
to setup
0 u* h7 r7 L* Y4 R( a6 X( S4 z
: C/ T# h( S% k% A% S; X, T1 Fca

8 g% e: ?3 o4 K% C4 z- r0 b8 ?7 S4 e1 c" s2 a% Z$ H
initialize-settings

5 i0 h! Z1 H7 Z. j. s" e0 I
8 @( I5 m" c$ O4 i: Kcrt people [setup-turtles]

  l( c3 |, i" c" A
  B- k: n5 x' mreset-timer
2 \/ v5 X: D/ t6 ?# {

- Z& Q( l. K+ z6 Ypoll-class

2 B8 D3 p- s4 n% b
( @) ~/ ~4 q, b8 q, _setup-plots

7 W' \* S8 J: o0 x) f& F( y  l, D6 d" ^; r3 r% i& @2 E+ N
do-plots

' }" U/ Q1 b  h$ M" b+ H9 jend6 T) o2 p9 V8 L8 }- N. h* R

# b4 F0 m9 g( F5 i) `1 g6 @. v5 Vto initialize-settings# l+ i0 H  M/ @& ]
7 f$ q) x7 r. F1 H' T, C
set global-reputation-list []
2 g' c6 s2 x2 S5 }  ?: _

4 n& A' D  o0 k" O7 v9 U8 Nset credibility-list n-values people [0.5]

! R+ Z1 q3 I/ e" O
. z" J. |% i2 O1 o. ~set honest-service 0
4 r; D& z$ Q! y+ k/ ~
& h9 t/ q. x8 }7 N- r( F
set unhonest-service 0

/ j9 @1 S( b* o! d! N! a$ L1 X5 q  _! w4 t
set oscillation 0

7 o5 ?2 o( N6 A; Z- {
0 ]$ e8 S7 }' n+ N7 }' nset rand-dynamic 0
$ Y' a# v9 l8 F, X
end
0 i$ a. K( a1 {& E1 ?) M4 C0 H( c: k, F8 F' Q- e
to setup-turtles $ {, u: V5 w! Y* A9 O1 G
set shape "person"
- E+ Y1 w+ J4 a# U* m1 J' a+ dsetxy random-xcor random-ycor2 g9 F! a, U2 S5 u; g. _' @
set trade-record-one []! c4 c; Q- K  Y$ _/ b
4 ?6 v3 ]$ Y& t# @
set trade-record-all n-values people [(list (? + 1) 0 0)]   Z+ r0 Y$ e* G3 v) q/ _5 q
1 k' F9 E* v, `1 t6 G& E
set trade-record-current []
/ y" n9 q5 T- _set credibility-receive []2 g! M* x# g! p  f  J: K
set local-reputation 0.5, t- u! s6 j, @' c5 n! Q
set neighbor-total 0" a  _( m. E+ h4 V* D4 o% @
set trade-times-total 0
$ N" i: O) w8 H, V2 Q+ Q. ~set trade-money-total 0; c/ L, E( K- [0 G% m
set customer nobody  m1 ^: v% g6 B4 M
set credibility-all n-values people [creat-credibility]  Q  m) e3 H2 N# F
set credibility n-values people [-1]
5 T& |8 i) ?' oget-color4 s3 O0 k# T% x

6 r' Z9 `- D: L$ Wend6 n+ M1 q. c+ {
. C1 S8 v. j6 F
to-report creat-credibility
) x1 S/ I$ V1 F+ _& Y. r% Lreport n-values people [0.5]/ c) P5 e8 @$ W" `
end
" S* q6 `0 D  i$ ~) [' G6 o) c( H: x  s! d" W
to setup-plots
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set xmax 30
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( v, ^( f8 d/ }* Q# W
set ymax 1.0
: D+ l* {9 ]8 n7 G

$ b/ r$ H4 R7 l8 D5 W: k: T: Gclear-all-plots

* \9 b, @' b/ Z. s( n/ V% [( t8 _" k" c/ `* }1 w' I
setup-plot1

: w; [& g, v9 I0 B9 z' N, `- M/ _7 N/ J
setup-plot2
% I+ R, Y2 [5 I/ I

1 M6 n4 r. ^: D+ d( K; P. I# n& {setup-plot3
2 G0 p/ [4 f- H. d8 }# p
end& t7 ^" [4 e, O3 L% Y- H0 T

+ Z' X/ H2 R- ~$ n1 P;;run time procedures
) n9 |7 k' D: E, h; g* {
" |0 [* D: X$ \, C8 W" G- |( Bto go
5 V; m( M5 y9 P0 t" J$ U, y
' ~: m3 g0 K# X/ qask turtles [do-business]
( p/ j2 A. }; `0 _. _
end
' w" M1 a5 ^/ R( F3 O0 ^3 O4 O3 a0 u4 G
to do-business 3 ]3 U# K% q& v& |. c( Q

! p% j3 V3 l$ K. w6 X* u# Q- W; E( `3 t
rt random 360
* L* C! e* u; {* Q8 C2 F  k

( \2 S' v8 x  s; z! Ufd 1

2 D3 n2 R. _1 y: j! l/ w8 C1 S
' ^3 \% U; b4 X, e( o; @ifelse(other turtles-here != nobody)[
, G3 f8 [" U1 w0 j

$ V, I& [: e* g6 F7 Fset customer one-of other turtles-here

6 C$ M' J4 K2 B- Q4 H$ z# m6 d% y& [- E3 `7 {/ S9 p
;; set [customer] of customer myself
0 u& B6 o  ~, z( u5 |

# N% @' s, X: ^, r( i4 _0 d! o9 Cset [trade-record-one] of self item (([who] of customer) - 1)
6 q: E- D+ Z" E[trade-record-all]of self- O9 k- N2 k+ b! b# a+ Z0 g. m
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
6 d3 m" V7 J* k- u2 K
0 V: g4 g1 I% W9 x: R
set [trade-record-one] of customer item (([who] of self) - 1)
* Y' m) Q0 k- `* D; i1 j- |% o[trade-record-all]of customer
: q* s' [( D# L8 d* r/ j
0 t# z) p! m' j9 S' V2 P; }
set [trade-record-one-len] of self length [trade-record-one] of self

! l+ m4 q2 \" M: E& C" o  }9 ^. k8 W
set trade-record-current( list (timer) (random money-upper-limit))

2 }+ O- k5 g5 I; _4 b  P
. V  e% r* F! Y% H2 ~ask self [do-trust]
1 [% ^$ g' G1 {5 b4 r* K( ]/ n;;
先求ij的信任度. J# w4 k* N2 U

* W* H6 e0 |# c( j5 D/ sif ([trust-ok] of self)
0 ?- Z1 n$ E$ x5 ^/ Y8 _& V+ `3 u;;
根据ij的信任度来决定是否与j进行交易[
2 K4 j9 W  L* E$ H: J4 \ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
% R2 F3 r- D8 y* X5 n1 J5 M# K9 d; y. P0 ^( F: S5 k
[
; {4 }# k0 M* Z: E6 W

4 b: w' l) \8 A% ~do-trade

$ c" `0 N; k  b' `8 v7 H% x! a/ c  I/ F! D: W' J. s$ d, g+ ]
update-credibility-ijl
- B& b. J' ~" k; U% K7 U. I/ m9 `) |
, Z* Q, H1 V' o' w
update-credibility-list
4 [" Y% l' p) p7 \/ l; {% ^

3 y2 [3 S; ?& S2 S' B$ M, p7 o$ t) S" l+ y1 S
update-global-reputation-list

: E; b1 N4 E) I$ I! C# M8 f; [+ l8 N" a1 |) q
poll-class

/ v6 o: i/ T1 y2 E, h- T5 g( g  @4 b) J( Y( r
get-color
' [4 I% i1 ]; q8 R# _8 S3 q
* O0 _% O! Q7 H: k8 }5 y/ k
]]
7 y* y& r- l3 @3 n3 e& O2 X& l0 o& Z- e0 s' p. n; E
;;
如果所得的信任度满足条件,则进行交易( C& h1 N! h3 V. X% m* d

/ z' ]! O4 `2 A8 O1 w, Q( o- G[
; t0 M, R; g0 P/ k: Y

4 x8 a- {! b; Z/ A) Hrt random 360
1 z& x7 `& Y2 V* w
, k# r: {7 D- E- C5 d6 [
fd 1
/ x6 S4 x9 f% v7 O
8 ~) }4 G  I' Q* i# L
]

6 l# D# m. {! z
* m# N) o0 u% cend
7 q7 O/ W' S( x, s& A
. s$ w( N9 p- }! A
to do-trust ) e/ @7 @" O' F
set trust-ok False3 L: i4 e, w- p. w- E" f) d

/ q9 H, n3 N& n; L& V+ ~$ t* l

. a+ M# V- _# D! _! }! wlet max-trade-times 0! D) e2 C) f1 Y
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
  O2 s; V/ ^% f8 \% v/ Clet max-trade-money 0( C6 o+ F  \& [" R" n8 N2 y  X1 [9 S" m
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
1 O, Z6 K3 P* z$ @5 R9 glet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
/ O  \9 Y- x- d7 w4 s/ m! y+ p6 G+ f! N, n1 c3 e

% h$ z1 q; G. V# e7 g. Lget-global-proportion
, G, A( C" J& L+ c- elet trust-value0 V/ h6 ^/ |% \3 h5 ?$ b: R) T
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)

  m% V+ L6 B' I' `. h5 lif(trust-value > trade-trust-value)$ ], L4 o/ A5 d( I) t7 x
[set trust-ok true]7 u, j( R( k. d) z
end; u* D% O( h3 |
! y) D& [% n0 ?3 |* q( Q' {; V
to get-global-proportion5 ?! n  A5 [+ S/ T+ \
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
2 k& B: t  o# D[set global-proportion 0]6 C  O) }) B- n! b$ A. ^
[let i 0
: n, z& O  f7 F* slet sum-money 0' B0 R1 E/ D3 L0 U
while[ i < people]3 e% Y2 g& g3 z4 A
[# n* G/ i/ Y$ A! q( Z/ T/ k
if( length (item i
0 \, [5 c: Z/ f& d6 R3 r3 E' k8 i; E+ ~[trade-record-all] of customer) > 3 )
0 h; \( o2 G9 w
[( \. w3 f, M) f
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))% n- y9 a2 v; h( T6 r# T2 a+ v1 g0 y
]
* `- o1 o, z8 v: F]  e' O$ W) n% m0 y9 D! f3 A
let j 0) g$ W7 V' u3 |; q* n
let note 0
/ Y5 U  O2 x/ d6 ~4 Nwhile[ j < people]
; W# Q8 M( [+ z) [, J" g# Q[' r4 }/ G0 q6 V, S0 b  c- I, S
if( length (item i
9 G& c3 J: N$ c[trade-record-all] of customer) > 3 )
' l' s$ i6 Y% f( Q7 c0 q$ V
[) M" L4 K3 M$ l! z& S  n
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
( v2 G4 R9 R/ _- |/ i3 t4 {[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]6 j0 Z; U; h2 D5 d$ R
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]2 y2 ]# _9 A5 O0 A3 b3 B( g  N
]: s" b/ q: u8 _# Q+ l
]
+ k1 M4 ]; E/ f2 M8 R& j) a$ G. ]set global-proportion note1 y3 f# g3 |( {" H
]8 S% W' Z3 O8 `( y6 x: u3 v
end* o9 S6 y$ K9 O
! r& x. g1 I+ \6 b2 ^- V# U
to do-trade
* ]; W2 B7 |: r8 k# q( x( X;;
这个过程实际上是给双方作出评价的过程
$ z  J9 ]' D6 zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
- C" h$ |" r2 \; R6 Iset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
" R% E' K; J6 R; h5 s$ L% Oset trade-record-current lput(timer) trade-record-current% t( ?- W, W2 t
;;
评价时间
9 P8 h. h, G4 q1 ?% @ask myself [% R) O% @/ l4 B/ E
update-local-reputation7 P$ t, r' ~# X1 s1 F3 Q) X% H+ N
set trade-record-current lput([local-reputation] of myself) trade-record-current
, `* _& `- v- O- T. Z# G9 z]& V, K  b1 @6 |& l; s; ^5 h* x
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
, P- h6 P  L% e$ q, V# w# V;;
将此次交易的记录加入到trade-record-one6 r  z. x6 j) z/ C3 E7 Z6 v: h8 q! ?
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
" x" e- y! A: N# p7 A2 w7 |let note (item 2 trade-record-current )
6 N6 H9 w: h6 s1 rset trade-record-current
0 z$ D. Y! s  o: Q9 C: T5 H(replace-item 2 trade-record-current (item 3 trade-record-current))

& O" l9 b  e" I3 sset trade-record-current
) P9 h: w. t- C/ a# e(replace-item 3 trade-record-current note)
% o' j2 X( E. m1 L5 L3 T6 X9 Z5 W- c5 q) o1 J  U8 }

6 f* \+ H" n) n$ m* g9 [7 W2 Mask customer [+ \4 e2 e% U  N% O- D& G3 B
update-local-reputation$ P7 ?' l( U6 q' M: F0 ^0 b( C  R( J
set trade-record-current  P$ g2 g% o) m
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

! A" O& |7 k1 r) g" M! G]/ {( Q/ F& f  w9 _

7 i8 p# M8 j! G# u; `- t

; \& A, ~+ p5 p" @set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer' Z. |6 l& `- F6 y& u
( I9 b- G4 l4 A. W
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 Z& k  `  J- M& v# N% w8 {9 X
;;
将此次交易的记录加入到customertrade-record-all
; N) W% {$ `  j" E# F: T( ^9 Uend
* w: M& y% K+ X2 s* @9 n
$ ~* |7 v+ m# t+ N7 A9 mto update-local-reputation
* a% u+ D8 J- k4 V( xset [trade-record-one-len] of myself length [trade-record-one] of myself: B2 E  Q6 ^1 B

6 t9 f% |) g% _! L* j: }8 F  ^# v+ G+ r0 w1 c
;;if [trade-record-one-len] of myself > 3

8 S3 m* k1 {; Bupdate-neighbor-total9 G5 j3 R5 U7 s9 x: o' r
;;
更新邻居节点的数目,在此进行9 t% l0 d, y6 M) q( a: b
let i 3
! J# l3 c  D- h9 }/ Ilet sum-time 0
! N: a3 r5 K) k1 T" @while[i < [trade-record-one-len] of myself]" F; U. S" \4 y
[3 Q- S- g: n2 V
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )" X/ s# I  \5 ]; y  P& W4 f) `' k! P
set i
- c5 k7 c) Z2 j) u+ K. z( i + 1)

6 S- K! d9 r" m4 B]
+ A& n6 L. ]. Y, k: Y3 @7 f" |- ylet j 38 Z2 I3 w: x3 }, @. j4 l6 p
let sum-money 0
' P; |- O5 Z! ~% b! a5 h8 fwhile[j < [trade-record-one-len] of myself]
. Y. ]  U' _. t[
. q/ {& g9 s' j! t7 tset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
9 D/ M# B6 Q, K& ^: ]2 f' L) lset j
; W/ A& W# r9 @% U8 W7 R' J2 h( j + 1)
5 a  f" r( U& E9 y% l, U
]
! Z" s6 [% L( r0 Olet k 3
( R( L2 G' s7 i& T) @- |let power 0, H" n7 U% B; H+ h7 f
let local 0/ f' J# q& s9 \7 A3 f
while [k <[trade-record-one-len] of myself]6 F0 f& o+ r+ a# C: O. D. O
[
2 M8 h$ e% |6 ^& c' Eset 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) ; X& `. O& J( d: h2 u9 Y
set k (k + 1)2 l3 s' n! F! M6 U9 M! T
]  K; z" X9 f! b0 Q
set [local-reputation] of myself (local)7 @3 ]% o3 P# n9 f
end
, I. I! p. N4 `. M- z- H3 h4 l
- o8 V9 |# D1 m" mto update-neighbor-total) c2 h! T3 |( P5 f$ x
9 M% a7 V) |6 h! u& k7 E+ S
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]( \' \" l+ L9 U4 n7 N$ Y/ H

+ q& M. r. [: ?; E/ h
& _0 D- ~& C+ _* `
end
, B5 j) D8 k* \, k) d7 k7 m& n0 }7 X+ I) |
to update-credibility-ijl . t1 Q+ k  W, H' w3 ~4 f

/ ]- @( e7 \% A( _/ \$ b, R3 |;;
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。
3 g) h; f2 K! ?' \; d  o  {let l 0/ U2 H$ i5 O7 ^  G/ p" U7 L+ h
while[ l < people ]7 m2 i: o6 B7 Y
;;
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% J$ [! Z) ^. G' a% H: G! t
[+ H- u% v: O% x' k
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" T' z& {( s' k& X0 j0 w' I: Xif (trade-record-one-j-l-len > 3)/ @2 Y9 l$ |& \3 l9 ?( `# B1 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
7 K) n" b' |. Y$ Alet i 33 J) ?' q3 V8 G: E) {8 _, E
let sum-time 0
, _% e7 w* b0 ~2 Cwhile[i < trade-record-one-len]" z+ L( a) Q/ l" O$ v2 O; p! j  |
[
$ Z% l! a& w! @) \set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* t+ @- R" P1 K, ~set i6 z; Q, ]- b/ _& p2 H
( i + 1)

6 W3 k' T; t3 k) ^], K9 g9 s$ [5 B. s
let credibility-i-j-l 0
/ D  }( V" |3 v& Z( x/ j0 `5 I, H$ O2 ];;i
评价(jjl的评价)
0 v3 U0 ?+ N0 D$ g5 K" alet j 3
2 I  O9 K7 I7 C# o7 elet k 4
" g2 W' Y% ]' H; e& E6 Twhile[j < trade-record-one-len]
3 C& X$ W4 R9 a3 W[
! `3 \8 X- {2 W% p) 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
1 Y% l' {$ O0 Nset 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)4 Z! }+ \2 o, a  ]( {
set j
  F8 p. @% ^/ X" q, O; i5 z" s( j + 1)

- q4 f5 z. y! @]
/ o8 e, y( u, K8 V- X7 b. ~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 ))# Z7 U5 m8 H( _1 P- d

% W9 j7 n" N( c4 h- ^* c) D3 u8 Z/ H

9 d0 i; d1 H. h$ G6 ~& d) z% ~let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))  f- m* T9 O9 m8 k$ d$ c
;;
及时更新il的评价质量的评价2 @! S, @# B3 u" n+ _7 }
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
! N; u3 e) y8 t& |set l (l + 1)
; I: I/ e! w* U# f]' u7 Q: R5 [+ A; A! |  j8 u- C
end0 L4 U/ H5 N6 n2 t1 d: u2 H

6 E+ s6 S& t# _" v! D" nto update-credibility-list
2 ^( S+ z$ E& r* r' _$ `let i 0; J  Z* L/ Y& T4 o  u
while[i < people]  |' g+ [* \& H- {/ n  o
[9 x2 B& w8 ~( Q% o2 d
let j 0- Y% }7 C7 N+ @/ `6 I: a5 q
let note 0
* ~# Q- P# l( J: }* l' s, |# e" M& blet k 0
2 g: g, E( c/ k7 k! z5 Z% }1 p;;
计作出过评价的邻居节点的数目
! s; j1 N, w1 D2 Mwhile[j < people]" T; c+ ~) Q+ |9 K4 |. u
[0 s3 F5 Z  ]7 K4 w3 [# t6 r7 o
if (item j( [credibility] of turtle (i + 1)) != -1): q7 C9 M4 `" X& t4 z' j5 J8 p
;;
判断是否给本turtle的评价质量做出过评价的节点) S9 \7 y- n* O- U
[set note (note + item j ([credibility]of turtle (i + 1)))
" b6 _5 a; X1 g7 k;;*(exp (-(people - 2)))/(people - 2))]
- `% R9 k3 t. P: d
set k (k + 1)2 q5 p& g9 _- O; z% {5 h' g2 B  J
]. C( }5 Y  X, S# c# s
set j (j + 1)0 y+ J, j. X$ Z4 o% v& _
]
9 G; N" F5 d; Mset note (note *(exp (- (1 / k)))/ k)1 E, J: ?+ O# j+ }2 l. y
set credibility-list (replace-item i credibility-list note)
1 t6 Z& V( [: l' d" r* O% b6 T/ ^. Nset i (i + 1)
9 t" {+ ~' T4 v]( L; I$ v  C: `1 ~
end% B2 j7 @$ T0 C/ L( ]( X( H* t+ Q
6 }! `& C/ C5 k; e3 v, z/ O
to update-global-reputation-list
7 L" G4 I9 `: o1 A- {( H0 U. nlet j 0& h) X6 ^9 i4 S% [, X
while[j < people], r* D/ T9 H+ g2 z
[  G1 Z$ g' c3 ~0 I1 c
let new 07 X* l' F4 V6 J5 v0 k% I: T" w
;;
暂存新的一个全局声誉7 f  U: J. \, t( ?8 C
let i 0! k- O8 k1 k: g# y" q
let sum-money 0& d8 K, s% c( W0 p
let credibility-money 0
% u) j3 M9 s8 P" w. z9 Q# D) owhile [i < people]! N9 K2 j% u2 |" G! n- u
[
5 r- y# b! \5 Xset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))$ _% h# H) q- q0 @' Q# f6 ~
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))6 r, K* I. _$ [8 F
set i (i + 1)
* O3 \8 u- H; S5 N" x) P]
4 c" W, ?  N* q: t" H5 d  H# Ilet k 0) O: L0 m' b5 _9 e
let new1 0
$ e  c+ _5 [* o9 z, Q/ y6 P. Rwhile [k < people]
$ N7 e4 C' Q& `" _7 q! _7 G$ v[3 t  E  m; W; k2 s) ~% _
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)
- P# p8 |+ Q$ v& i+ |" M9 C$ sset k (k + 1)
6 a/ I0 \6 s( W4 Y+ T: x]  v3 ^, b2 g: T% C
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
5 _0 C" |$ X- I6 `: a! Jset global-reputation-list (replace-item j global-reputation-list new)- r: `# {' ?' Z7 [" k5 d2 i, j6 w% O! O
set j (j + 1)
% r2 s$ L- C5 i1 U  _]7 }9 X) ~9 `7 @
end
' A5 L& e8 S8 L" g- Y' Y9 {! w% \: k. w+ E/ t' z! c2 o- }

9 u3 E1 r, J( F) I9 K' Y. J8 A# B5 a2 p# k; e
to get-color) L1 x6 U+ g  G/ L) `

5 h, g" e6 _1 }3 C3 Q* uset color blue

" i* A: t$ j% k* X. [end$ k8 ?! p0 g; y  {$ L; _

+ v2 Q- x$ U& Y+ O7 z& A7 D/ _: ~to poll-class$ a7 M" r9 E' r# ?' D$ _$ v) o
end
, Z0 C: M) w# I; N) D
, n* W! g/ |4 Q  ?2 E7 G! `to setup-plot1
$ x  D: w' P, [- f8 t6 G
0 F  a/ O; x/ gset-current-plot "Trends-of-Local-reputation"
3 z0 n& E9 n9 v) o5 L* z3 t2 ]

* S$ u& h) a9 C7 Sset-plot-x-range 0 xmax

, D% g; z5 ~9 ?9 N
% r$ c8 B6 b" C2 rset-plot-y-range 0.0 ymax

# A5 p. x. {  T) n+ Yend6 J' w4 m" ~: H; k

& z  s' z% F5 rto setup-plot2# D  |+ g6 O- W  x1 N
+ v( n; \" v, Y( L, ~! S& ~* m8 M
set-current-plot "Trends-of-global-reputation"
2 c( q" ^" C6 J" a- r1 J) e
' ]5 q8 E% `: }( y* d3 B- f
set-plot-x-range 0 xmax

+ D- |/ @! @2 E
4 b& b4 S# e3 d' Q9 o5 Qset-plot-y-range 0.0 ymax
2 i' J9 b: F2 }0 o
end* {8 }6 M4 l+ T: y& C& ^6 w  E
! i- B! F" t6 @
to setup-plot3! K/ p; ?2 y+ [* F6 j1 H
" Z% q3 X2 L0 k5 r  e6 m: e2 a
set-current-plot "Trends-of-credibility"

3 G: L3 W/ @: W; U
3 w! t4 D( ?7 G% _  W3 Uset-plot-x-range 0 xmax
/ R/ h! w( Q& O4 {

. q, Y. g( F7 y# G1 mset-plot-y-range 0.0 ymax

4 `0 X3 {7 T5 `* v; n! Dend
& \- p  |+ l8 c" n- t) ~( \: M6 @5 ~2 x& X1 [6 i/ _/ @6 e* F5 j
to do-plots
. l! y2 _0 {) W. xset-current-plot "Trends-of-Local-reputation"0 p2 B  C9 S" o0 N
set-current-plot-pen "Honest service"
, Y# O' @$ u, `) l6 L3 Pend  V: U7 M! c/ {+ E0 \2 H; s# H

4 V7 v) S0 h) i3 E. t3 k* i9 T[ 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.
8 a0 k$ C; `& M( T2 M% p1 v1 F  P: z7 e7 Z5 l9 l
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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