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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:
* ~9 h; p. |4 y5 tto do-business * J- o/ g9 O$ e' p9 {9 |
rt random 360
6 @9 k9 U; i: ?$ r8 M fd 1
% T1 E9 J( d5 D7 ~& O ifelse(other turtles-here != nobody)[/ j+ i/ n9 e* t9 w7 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.
# Y& ^5 i4 I7 y' P   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ' H  b$ q; a& f( V( R
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer& v* Z8 I5 {, z- t
   set [trade-record-one-len] of self length [trade-record-one] of self
' S) L/ d% V4 M   set trade-record-current( list (timer) (random money-upper-limit))# n- J  E* c, c  o  a

4 V. G# t1 _9 n问题的提示如下:4 Q& V. y; v" d9 \  o1 L+ ?: [
$ Q' Y/ F0 p* E. D
error while turtle 50 running OF in procedure DO-BUSINESS
/ h4 x5 y5 `1 k- z; ^/ ~2 k& b  called by procedure GO
1 {8 \5 {/ M* k2 nOF expected input to be a turtle agentset or turtle but got NOBODY instead.
/ M( e6 K9 `3 s1 D: n5 `  i  i
(halted running of go)7 T9 B. q2 }; N  j/ ~
" i5 L( F' f% o1 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~~, R( t% h3 d8 y* q* t
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
% U; e2 {( `4 }8 O5 j/ Yglobals[& T: K) s+ N# u8 q
xmax; i, o3 c7 f4 O; |$ [' L) |
ymax. b; G+ h; W& y( I: {7 d
global-reputation-list: s5 F. A5 r) C" i8 E1 ]
: x" [+ P9 A, Z6 M) w& W
;;
每一个turtle的全局声誉都存在此LIST
! e" ?  R& Z* ?6 F8 ?# q& ?& _$ zcredibility-list$ h, k6 J" z) n2 f) A# ^
;;
每一个turtle的评价可信度9 S% D1 ?, O- k. P9 q
honest-service/ S: j! r. @+ G+ P& o$ }
unhonest-service0 S4 f. |/ z6 X% e0 J
oscillation: _" p+ A6 F$ d, |2 L8 E
rand-dynamic1 M+ z0 ?! h) W) A, @# \1 X
]. @  }# z( s6 d. c
. G$ O& h8 ]) }6 [* o
turtles-own[+ _2 w2 D+ d, D6 T' }
trade-record-all: F+ A, A* \6 X/ V, ?
;;a list of lists,
trade-record-one组成
7 C6 S0 U; W; ^3 h# q) xtrade-record-one
( u5 D+ k! x, c- P. n- i% Y;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
8 `( |( Q5 m1 V1 N: P6 K1 [$ ~+ E( Y0 {. C" n0 Q/ ~, v- 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]]
& G9 _- ?* ]/ K3 Xtrade-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]8 q5 ~7 l: ]( @* j( 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
8 z( v7 a( i7 U) ^: g: ]neighbor-total
+ F% c$ Z7 v8 n5 X3 |;;
记录该turtle的邻居节点的数目
% }, c( V  i% w$ s$ P6 P5 z" _+ ^trade-time, T: t1 B; t6 J/ E  {0 Z
;;
当前发生交易的turtle的交易时间8 P; q4 i- Z, j/ H( L. t. P9 W
appraise-give
! e: n4 w3 c* ]$ i4 O;;
当前发生交易时给出的评价
9 B6 X% J6 K- f8 v6 a1 Lappraise-receive
: z9 ^& O! _0 d% Z5 g  E;;
当前发生交易时收到的评价
! Z3 u* e  K* a; y5 ?appraise-time
. ~% \6 V* l0 V2 i;;
当前发生交易时的评价时间
8 o& N0 N* }  `local-reputation-now;;此次交易后相对于对方turtle的局部声誉
1 P: j9 j5 \4 M; t5 xtrade-times-total2 Q/ U, C0 f& ?3 C  O$ R! X
;;
与当前turtle的交易总次数
  V  ~! H# g' _trade-money-total
4 }  L0 K; Q' Q3 };;
与当前turtle的交易总金额
: j# W8 B: H; Y1 h" X' Mlocal-reputation6 T8 e& [6 N" q, w9 ^
global-reputation
( b* F7 J! [& @6 e6 ^+ d  W% h$ lcredibility+ E( w9 x; |( d! x4 ?% D" I
;;
评价可信度,每次交易后都需要更新4 t0 t3 H0 P! T7 L0 b8 M5 |
credibility-all
8 @+ }0 C5 D9 y" s# [+ _9 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
) o( U& ^: f6 [2 c% _( O- V0 ]6 ~: T: c  t
;;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
% Y6 _$ @  F) K# E4 h& l2 ccredibility-one; W: N+ M; Y$ D% y/ v, F8 X
;;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
9 \! L8 K+ S4 i9 K% ~% g, hglobal-proportion; e. S  m7 i& P9 {, o
customer
/ R+ {! B9 {  e, zcustomer-no& K& D) Z) ?% J! ^
trust-ok
+ i. c6 l2 q$ k, x# Mtrade-record-one-len;;trade-record-one的长度7 G3 b% w, I; H( i
]; d. T$ m2 E) P5 a$ h2 S! Q

: M: U3 w8 U0 Z4 H. U. b;;setup procedure
2 z8 W; w1 h3 K( q; X8 t8 V0 E3 ^7 Q
to setup
" Z  o( }. t4 i! I, s' g
% R8 X2 y4 e1 z- Rca
. ~' m2 ]4 x1 D& b

8 ]! d$ L' ~" binitialize-settings
' Q. N+ t) t% A3 I! ~
$ B- [; ?4 _3 Y
crt people [setup-turtles]

! n6 z: q2 O& [
; v/ e: ^0 r2 B; @  O  ]* V/ Qreset-timer

" s* b3 L. u4 K! p1 a/ |0 p6 i2 L! K4 `, L5 ~1 J
poll-class

* y* ^' E! E" G1 y, j" w& w$ T: L; J: y; P9 ~! ^9 i( L4 E
setup-plots
. i6 [+ ~) {) b: D/ Y
3 J6 f3 h. s' Y' [2 Q
do-plots

7 |# |0 {# Z: I, C0 jend
2 d& a$ ]9 H* x" n; ]; ~" \* o9 H: e% Z
to initialize-settings
1 M& S+ T; U" @5 y1 x( D: ^
3 _; }1 d9 Y6 kset global-reputation-list []
: g3 |' `8 c+ U5 d6 n. t  G& C

# y/ @& ?- G) L5 qset credibility-list n-values people [0.5]
+ u: u0 K5 e8 Q# `% g3 S; c

/ B! o7 b5 b; a; c- P" v+ gset honest-service 0

7 \. g: z1 g" S4 D# c: o: f, G$ v. w  h2 S2 W
set unhonest-service 0

0 L) J2 e4 Y3 Y! Y- k  Z
( |( X& V! n. j8 F" i$ lset oscillation 0

2 u; ^; ~9 U9 q1 j( E! I8 z# D' h8 E% `- w0 C/ v
set rand-dynamic 0

; R+ ?$ ]! v( r; G% m, Pend
+ B; Y1 W) c, q+ d5 X3 e; ~
! z( N8 g+ F( |to setup-turtles / h: r) ?0 ~6 d( k% v4 E# x1 h4 x+ w1 c
set shape "person"8 R6 Y2 ?# R9 l. q6 R0 k
setxy random-xcor random-ycor
) P; x- r3 E/ [- uset trade-record-one []& \7 n0 W' J* ?+ U8 r1 Z4 v

. n- F1 c, o, o7 Jset trade-record-all n-values people [(list (? + 1) 0 0)] 1 a& O8 q! q! J
8 g% |; `2 o) o! Y8 N+ j3 n3 A
set trade-record-current []
! y; E  ^0 n! S  E: Q- mset credibility-receive []- \6 G+ U' A9 p8 d
set local-reputation 0.5+ e- b: k! {5 k
set neighbor-total 01 P2 x6 h7 ~8 z0 n) V
set trade-times-total 0
  l- \" @0 x' G% e* P1 ^set trade-money-total 0: n  e; d. k# j. J
set customer nobody1 n, Y; c+ O3 m+ Z7 y( U
set credibility-all n-values people [creat-credibility]
% A8 _6 |* ^; H6 z" D8 mset credibility n-values people [-1]1 ~1 T, W# e- i! Q4 X" H% q5 z/ [
get-color" `  ^" r) Y4 f! j- D6 e
4 p- b  Z7 s( v5 `7 `
end
7 {2 b% Z6 q  k1 l( P8 ]# W! ^" W% u
to-report creat-credibility
3 F/ C6 f2 r9 ureport n-values people [0.5]
2 v* \4 b* f0 Y/ {6 d' c* |end
, J' n  [* j3 e# b) y
: M- O. ~2 r- v! u' o2 W4 fto setup-plots( g" B' l$ F  R1 X  \4 }+ M* Z6 r
2 q3 Q/ K% a6 R* }, x
set xmax 30
$ P; C/ q5 Q2 O5 p, e" J

! Q& g/ x1 U4 }) b% Vset ymax 1.0

" f1 V- W9 W8 T/ U% _0 C/ v  |3 n6 X) q5 K4 S( X
clear-all-plots
$ `5 o" Y+ y! o/ x, R0 a  j

( T; `* M+ p# nsetup-plot1

+ ]& R% n  T0 L. T* W: b9 ]
. }: D8 S) ?' c2 T/ ?$ psetup-plot2
* R+ s) g0 c, }9 _" n9 W" E

; y6 c6 g7 I6 j+ r! ~  i) b$ ~/ Y  qsetup-plot3

. e+ v+ ]/ E' `end
7 }  ^: y& d0 O% E& F# i$ p2 @& t2 n+ K& {' E
;;run time procedures
7 b: u) L7 s* N* _2 |+ ]9 W) S. p# K: @9 _; R1 ]2 C
to go% ?8 b, Q7 m5 z/ b& L% q6 I

3 z, G4 s4 ?/ X! ^3 cask turtles [do-business]
9 @. N- ]: `& h  J- v. P, C
end
* u& @* `# r: p$ T5 D- K' O, j6 u
; |9 \, G$ i3 B5 Y' Q- p7 T  m: {to do-business 5 q1 Y& P( w9 b
: T$ R" b% K* G. x

3 F$ Z/ t. ]$ t  {" _, `rt random 360
/ t$ M+ K, I) T2 t

+ o. e$ f, s" p" Zfd 1

8 j, A; s- C, r
0 y4 p+ J( i1 w6 \' F3 ]9 y) Rifelse(other turtles-here != nobody)[

2 ]0 z. h5 p" X# X  M5 j
  P9 c+ A6 b( u% y% Vset customer one-of other turtles-here
, _' `: G5 z6 d. p- R( h# S7 [
$ \: H- S6 y3 U* D
;; set [customer] of customer myself

. M4 z5 G8 d1 {5 j2 ~1 G' Z4 M% C
set [trade-record-one] of self item (([who] of customer) - 1)" D% f+ u/ R$ J8 C9 P; n5 B
[trade-record-all]of self
3 r: p* }, B' i0 y% ];;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

, D0 a$ P0 F/ y8 }. v* \; M! N
  e! Z; g  P* `  |$ B; Jset [trade-record-one] of customer item (([who] of self) - 1)* y! y" w. V/ x, g8 W5 b
[trade-record-all]of customer

+ G9 p5 F3 U% L4 y# e9 {
4 T' A3 i( j: G& zset [trade-record-one-len] of self length [trade-record-one] of self

! Z$ c" s+ {) n' z0 X) }/ K: V: u0 i
( {7 J8 F- ^5 a' x8 d% S0 n4 ~" hset trade-record-current( list (timer) (random money-upper-limit))

: I( q$ Q- V7 g8 t$ V3 K2 H1 r/ c/ k& a( U* ], Q
ask self [do-trust]
# P- c! ~. |1 L0 R" D9 A1 u0 I( D;;
先求ij的信任度: t  v: i: I  w7 w6 j# T

7 _# f) K$ ]5 s- Rif ([trust-ok] of self)
0 x# l/ r1 z+ Z' M1 W;;
根据ij的信任度来决定是否与j进行交易[, o( Q0 F" p  s" B$ S+ [( k" j
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself  j) m8 r) p% c( L( ~) R$ ]- x
* s' t4 a4 s) y# ]' P' D& f8 R
[
& H. o8 C5 h0 i3 n9 b0 Z( n
. o/ g3 a$ Y3 l2 T( u1 C+ K
do-trade

- b+ B( M3 \. G
4 T4 ~: [0 `! u8 E. w4 ~* B9 b; m/ Rupdate-credibility-ijl

1 r; n$ o. v' N( y: r: @% _4 l. ~9 r- E5 N) d7 g
update-credibility-list
' J$ O* g1 ?  b

9 c4 C6 b$ W& M) x; X: u0 [
. D' {) y9 ^2 D, Q  B2 s  D2 g1 eupdate-global-reputation-list

, E5 N( D6 i! q3 p! N: V  R& d3 r0 g! w* _( }
poll-class

  i1 l5 e. i* T  E
7 {, t. Y9 d$ X' @2 u3 c& D& mget-color
  |7 L! j* b/ p! E
* `& e5 x# N  G6 M/ n
]]
- B+ ]; N! h6 G) I. Q8 {. L
% ^2 Q: r/ k7 i2 h! b" D;;
如果所得的信任度满足条件,则进行交易
- j- e; J7 u% m; x, F! f; m$ }8 v/ k2 Y4 v7 x1 R7 l8 ^
[

( f! s( L9 E% z# w! Y, N% H% S" @8 C: t8 h  @- P9 P
rt random 360

- @# M: \8 A# b4 r9 X
, ~, T/ g7 k, J( p+ m3 w: ^$ cfd 1
; |# k, S: @. U# p; h
6 w: a0 k: Y' o, K
]

7 H$ v( N; V4 F3 V4 ]5 Q* C- a9 n" c4 ]+ @3 ?' l4 n9 l# ]' m
end
/ |. K8 d& r, Z7 K7 E' [% Q4 ]

  L' P+ q: B- X1 M3 m0 o& d5 Wto do-trust / ]7 R( K4 _7 \$ t( G
set trust-ok False: a; P- \# L- b! k: Z% b/ X  B

( |( F- {, Z  L0 D& `! j

, Y2 t5 q* C0 _% v6 A% w4 h8 \" Vlet max-trade-times 0
6 M  c  M  m2 N9 k- x4 r" b  _foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]7 p3 n* u; C: j9 O
let max-trade-money 0, o: d0 M/ A7 z/ e& L: T
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]/ l9 I/ V+ r4 T5 L/ u
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))7 q* E/ o5 y+ L* [1 C  E! b

" T( n& _" v7 _
  ~8 ]( D! o- f$ V
get-global-proportion
+ x/ T5 c+ E7 K5 b: A" H' o- A0 Slet trust-value1 x/ {$ h8 M4 u% `4 [/ a1 r) F
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)

2 {9 _' \. S0 n* qif(trust-value > trade-trust-value)& F" H; h/ e* _9 T, S) c
[set trust-ok true]
% q) ?6 q; S) @# H$ }3 w3 gend
0 |* `8 d& Q6 D( F' i
% s# t3 H# g  y, H/ pto get-global-proportion8 d6 P& t5 G9 K. t3 ?- w
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
7 M7 Y2 B$ u0 F  G% R* h[set global-proportion 0]
; e4 V  @( y6 G( ^[let i 0
* _+ U1 g) U+ J+ k* plet sum-money 0
/ d8 y3 }1 G3 {  nwhile[ i < people]& J4 p0 T  q* q8 t; X' U( t# V4 j
[
5 d4 b2 }8 `3 ^9 G9 wif( length (item i
& M+ }+ a0 u/ c0 i& g. v- X' a[trade-record-all] of customer) > 3 )
$ U  i! `7 B) {1 s+ V
[
; m+ |  h( \, w: ?set sum-money (sum-money + item 2(item i [trade-record-all] of myself))( G- p1 N* t7 |; [7 e
]
0 R$ h* S# @3 X]$ ~5 e3 W$ w4 P: Q
let j 0
' Y& O) M  N2 c" ?" qlet note 0# w" j- i& W5 t4 c3 E( U8 d
while[ j < people]
! c  p2 ]% [0 W( ?( o0 B& Q, K[7 _* w+ o2 z7 i5 e* `: `/ i- h
if( length (item i
/ o5 h3 F& D& C2 z[trade-record-all] of customer) > 3 )

+ A+ @/ z9 O: M% G2 p: D[- h7 R3 ^6 P6 K% }. A  e9 t. c
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)6 f. _5 J. g" b$ `1 P, }; P9 l
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]7 g0 J, w8 T. f2 [* J- b9 r
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
* v- u$ f; |* L; c9 M* u+ ?7 ^]$ q, m: M7 z3 @$ f$ E
], m% Y/ }" L6 s+ N: L
set global-proportion note
7 }0 @& N2 K& v2 g]- \9 |. F, Z# m1 Y1 m- U
end
6 B2 R% u# D2 w9 h0 y
) A( g: \) F( D. ?  e8 Fto do-trade
. N: l1 @3 g5 l! l7 s$ E6 n;;
这个过程实际上是给双方作出评价的过程
: ?0 Z. D! b3 Vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
+ m* I' [8 G/ `; a/ kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
$ q. x$ ]6 A  K, r9 Nset trade-record-current lput(timer) trade-record-current
6 n- |, {# ~6 _% Z0 Q; E4 q' };;
评价时间
- V. x( u  Y3 U# Xask myself [& w% m8 ^+ r  ]* _+ @( `' x0 q
update-local-reputation
5 T0 i- V2 I0 t6 T5 D6 a+ }1 Xset trade-record-current lput([local-reputation] of myself) trade-record-current. \  N2 o6 l8 E3 B: d& G4 h
]+ F6 N5 b. ^# A
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 _9 L0 [" L. z& S3 d4 q
;;
将此次交易的记录加入到trade-record-one
: M6 J3 m( w  f# i. B5 Eset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
* w9 C# M+ Q  \, U% b2 t( W% slet note (item 2 trade-record-current )
# K8 Y* K( i5 C9 L/ ]4 tset trade-record-current( b, K& D8 Y; K% |$ [4 p- P
(replace-item 2 trade-record-current (item 3 trade-record-current))

! ]3 u( B3 C8 K6 Y7 r, W* zset trade-record-current
, d4 i+ G$ K4 Q1 k7 v  v/ K2 V+ Z' g(replace-item 3 trade-record-current note): [& ]3 H% o) [! ~

6 o7 r0 t& l% D  r

/ I2 @, _) s( w  n& s2 Cask customer [# z, n9 I* ]# h# i
update-local-reputation
) S# B* H* |* Z* K' D1 Uset trade-record-current! V) F9 q( R2 F! z8 f) H, ]8 E
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
1 z" r0 M1 c2 w- F5 D1 f! w9 w
]  f5 }8 D$ k- F/ B2 z

/ }  `1 c8 q/ k; u
- }  x+ r6 ~6 p1 c
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer2 m5 o5 Z2 s9 F5 r4 @" D0 K
. a2 {8 P+ }, N
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
( C( p' X1 F7 c4 x( `' M. H# q;;
将此次交易的记录加入到customertrade-record-all
4 ^3 v- S. m  E! J, {# O3 oend
6 i: {7 e( r- r5 \9 g/ q( i/ e  u3 J8 v+ M) F4 Z* x
to update-local-reputation
+ ^/ ^/ X  [/ I& P. a" Gset [trade-record-one-len] of myself length [trade-record-one] of myself" Z" i/ B# w* j: N! n! Q0 R

7 _. H, \9 X4 o( x" _2 Z8 Z9 r: @2 n; I: a
;;if [trade-record-one-len] of myself > 3

3 X( k% S7 u0 m- z0 s  W$ Supdate-neighbor-total
! I/ X# `% S6 P+ S9 |3 N;;
更新邻居节点的数目,在此进行  A- w( O' A# d) b2 R9 o
let i 3$ S+ J2 X2 [) t
let sum-time 0
$ B; j* C! H: ^: _( H: Vwhile[i < [trade-record-one-len] of myself]" u: E) }  K. m- X6 y! v
[
3 q" [, H( C1 Q) E; ?) Cset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )/ x% n; Q2 D6 g4 j+ p
set i0 q3 J0 n: o) h( I/ v: |
( i + 1)

2 m) L; f9 r3 Q7 V+ e' s]) e9 ~' S: x6 E7 j6 Z
let j 3
. W* g# u; R1 t: C% ^& {2 @let sum-money 0
( l" Q& I4 ^0 L' f; Q# Mwhile[j < [trade-record-one-len] of myself]
! q: [3 Y6 k+ M; s9 i& |[
4 z4 J. ]+ F. C6 {0 }3 d, A" a% M1 B/ eset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
2 @4 Y0 R6 [. wset j
3 Y$ h; A5 E, W1 f! g+ Z* l2 I! E( j + 1)
& h2 j  d2 G8 W1 U8 K; S
]( C$ T, _  w0 I4 c8 m
let k 3
, G' `$ |' H! y* Flet power 0
+ ^+ _# d' B: P  }7 X( Slet local 0" o$ I4 d% }2 T+ V
while [k <[trade-record-one-len] of myself]
& L; N4 S0 t+ B[
0 q4 B/ i- @4 pset 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)
2 J% n' x! Q" e0 Xset k (k + 1)& I/ E0 t# u3 _" X
]
, ~. }: M' K4 S/ m  u4 Oset [local-reputation] of myself (local)! @" m7 }8 [9 c5 h! \3 r: u
end1 R9 t! `$ K; O  k

7 S' n1 c* \+ S* B9 w* W/ w% yto update-neighbor-total
% j' X+ t4 B0 w* ?4 n9 i2 Y. f
7 E0 O3 i4 ^7 Z' Vif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]: N( T5 N( \: m
! e7 X3 Q! l* y; @7 I5 x
$ ?1 S& Y3 E- O. q( B6 H3 R
end
; l. u# x+ D- L# i/ m: w8 Y0 A  t( A$ F- m1 K- A2 b1 p  P
to update-credibility-ijl 1 C# D+ V' E' j8 z5 M$ @( C
2 D3 e2 D3 @( P0 j* Q4 t
;;
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。/ q# y9 X2 H  G; c& K
let l 0" g9 U6 q2 L- x+ |& p  I5 m4 _
while[ l < people ]
; a9 ^" S* g  m;;
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5 C5 O. R. ~+ d9 `+ {& b$ H
[5 g- L; J; N1 J4 O: Y
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)4 Q; b0 F; h& \1 W3 ?
if (trade-record-one-j-l-len > 3)$ f0 O5 U+ E" }6 J* C8 F. V* i: j
[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
* l) R, g, J! |let i 3
+ ^  T$ V# k8 F9 _: J8 A. Wlet sum-time 0
3 |" x) `3 @4 ~0 \3 F! ]1 |* }while[i < trade-record-one-len]  W$ T8 _9 t; u2 l$ T' E" S
[/ R8 k) m+ y6 m
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )6 Z$ l2 B) o1 w# f$ A! G5 |
set i1 {9 y5 n* R+ A. Q! x4 e, J
( i + 1)
# b' l% O3 ]! n% G) e8 O2 {2 R
]
) Z: f" h! [. r/ I9 Alet credibility-i-j-l 0
/ z1 a8 o0 F( z- r. R" W;;i
评价(jjl的评价)
0 x# h! |) N' w% [4 alet j 3- s% v  T% L7 E/ W. w: I0 K* y
let k 49 f1 l; E( |  k' F$ `' W
while[j < trade-record-one-len]
0 }3 t9 L6 [$ }[: B8 e2 d# x3 g/ l# C8 P, t4 U
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: K, a) K) V4 g4 a2 A& K
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)' `# N0 W0 m9 `: t
set j
& x; Z& P1 d0 `2 G8 A( j + 1)
/ i* k- y2 F, j4 r1 W# p; [
]
. u1 M3 r2 u6 P1 o+ bset [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 ))
# [9 q; B4 c* y' {
/ n# K/ p$ r" v; W3 [; P7 g

5 n, w3 w( I# a4 Ulet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
# E$ w2 m; T' L( I4 p;;
及时更新il的评价质量的评价
* f/ t/ }; s$ X& W& nset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, @$ W  i+ g7 U4 n! \& Xset l (l + 1)2 _/ e3 S% [# u1 X  i. |: e
], m: z  w: T& Y1 x
end
1 L: g0 |" p/ v/ ~  c, k
' v2 z* l/ O- `/ y3 s9 Eto update-credibility-list, Y! [6 O/ i) A+ J. W! w$ P
let i 0
& B) V; D. |% x6 Z! Bwhile[i < people]- I: f5 @, G) L% G/ k, X4 `# D7 O
[
2 r; [& I4 j, t! x  N) b* b1 V! glet j 0
4 j4 X! M  h! P8 U2 ]% T" _let note 0
4 g! Y9 Y8 C' J  blet k 0
' ^$ s) V" m& w: Y;;
计作出过评价的邻居节点的数目9 P3 v- ?$ Q7 Z8 ]( @5 m$ a
while[j < people]6 F  c) `! V8 G4 f# G
[
9 @& h5 B, z* v* Dif (item j( [credibility] of turtle (i + 1)) != -1); n$ |* [& E0 s3 q6 r9 p' K
;;
判断是否给本turtle的评价质量做出过评价的节点
, X& e! _6 ?! M, c* p[set note (note + item j ([credibility]of turtle (i + 1)))
/ d. t+ _' i* H2 W5 y- j;;*(exp (-(people - 2)))/(people - 2))]

- c" W; Q) G% Z3 o' N& Y; R$ Vset k (k + 1)
8 ]9 f6 f: a! |- K0 u/ Z]
, W; o: x5 i: m/ q/ m1 n; {set j (j + 1)& @* F) ?! _' o3 C
]1 x* E! h* R3 F- ~* z! W
set note (note *(exp (- (1 / k)))/ k)
3 {4 r, k  t9 h4 {  qset credibility-list (replace-item i credibility-list note)5 \- h  r0 W& g4 G, c* c7 j: }
set i (i + 1), t/ N; w: U8 `$ k( |) Z
]
& Z7 N. D% h9 L% Iend9 {1 c8 |6 K$ o9 y& ?3 Y8 i

8 E$ l; o+ ]' P/ @to update-global-reputation-list& K' V8 R5 G: i
let j 03 @/ ?3 w' H; u/ ^4 ]" P: Z
while[j < people]
) W0 W4 V0 E; }, r2 r3 a+ e[
" j0 q; ]% m: W/ T5 B) a( Elet new 0
7 }. C' n9 i9 Q! r+ f3 k+ N;;
暂存新的一个全局声誉
# O8 L, o9 g' ]/ ?let i 0
3 Q0 ?4 v$ I. a! P, I; u" Slet sum-money 0! D2 z5 A$ I; j- B$ C9 }/ k2 z
let credibility-money 0+ k- M/ m5 y1 }2 i5 j+ W3 M' Q
while [i < people]
: L/ K1 i* c5 U5 x1 C[2 |: y. p3 H" p8 P0 |+ [
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
% a$ n+ ^- E: x& q3 ?set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- M) F: S2 d5 T: ^set i (i + 1)
7 {9 R5 I0 T3 i1 Q8 R2 V]# R2 R# a! v  J, S3 J" k" B) \
let k 0! p# e, `: S1 \+ D& y, C
let new1 0" N0 M. W; c$ w) I# G
while [k < people]
, {1 L+ L) ~% M  F[9 K2 P2 B* ]" @1 t, W, ?4 H6 H2 N
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)
- B2 W$ V& w, Q5 N0 d9 \8 Tset k (k + 1)
: m5 w; v- u' ^; ^, O! e7 {$ g]5 L, h  p+ r) Q1 y. P
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 3 e: Q$ L$ R7 U' w# z: F
set global-reputation-list (replace-item j global-reputation-list new)$ s+ E8 |; R  O- \- D
set j (j + 1)
- b# [( O" ^2 p- V1 R3 f, f# X$ b]
7 k, q1 \: @& z% {! S7 k/ F  F( Send" c7 L! z' E: H7 _! T* ]

% L* ~& r2 ^. Q; N$ ]9 v  `# n. E. u5 \. Z2 Y

: `) o3 z$ _" W( K4 p( ato get-color
2 m* P8 _$ [0 l; H5 H  {1 Q# q' B( s1 v: T3 [- r# B
set color blue

2 P9 @- w( G" v8 l4 N, F. O& nend6 L5 k, t: L) g( G" X1 V: c; a
' w7 ~3 F  ~7 {* F* p  x. r4 P* ^/ s
to poll-class
6 C) ?4 ]; l- G8 m" u5 e; uend" _1 L0 D, l/ f9 i0 P

6 F7 ^0 V# J9 O+ F% q. o4 O# Y3 Cto setup-plot1
$ h, S, Q& [) N/ f/ s
7 P/ k' f4 o4 |$ i% U8 p7 Yset-current-plot "Trends-of-Local-reputation"

1 E% W# a1 W- k& y: C# F5 Y0 m8 K. H! I3 J$ ?" ?6 e+ j6 E
set-plot-x-range 0 xmax
; ]' [+ j4 g9 A; o% Q) \

- X! a6 ?0 w4 ?/ E. T+ U4 `3 Lset-plot-y-range 0.0 ymax
/ f6 y5 }* }2 x  Z
end
. g  @  `4 w. P; _# j: o$ z: E2 h$ b. p: \
to setup-plot2
* e  q2 ?" f3 V, p5 E  h* Z
% ]5 E, z* O1 u5 y9 T3 J: uset-current-plot "Trends-of-global-reputation"
% V! O1 h: Z: F' }% H' ]

7 G3 l  p9 J  _% W8 gset-plot-x-range 0 xmax
" H5 t- X" X% h) e, Z$ ]5 h

0 m- j* I% J# J$ o; P" Wset-plot-y-range 0.0 ymax
/ A# P/ a* R, A+ m" P# ^
end
* |6 b: E$ v3 J9 I6 |
2 i' x3 O! q8 E) Yto setup-plot3
2 E9 A1 T! j8 e8 h6 z
- T" x' E6 O1 i& c& D* Rset-current-plot "Trends-of-credibility"

0 X0 F+ A. h" \) b* K6 i6 D. X0 m% M  F' k3 K
set-plot-x-range 0 xmax
0 _  n4 [( G: a* t

# N& S9 n( i4 O- r4 Fset-plot-y-range 0.0 ymax
) e0 u# F' {+ s9 V5 M
end
, V: _  _0 r* e) X$ K$ k/ y+ R  Z5 R( t4 W( Y# {# ~) P! ~
to do-plots% M6 i; w$ C* C* a+ N8 b/ [
set-current-plot "Trends-of-Local-reputation"
* o" k: ~) s# d9 A1 xset-current-plot-pen "Honest service"- A# p: l- F7 A6 G0 `
end: E0 X" J& X/ K% n

1 X6 Z' x( }/ s) t3 c[ 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.. g% x5 c" {3 v& i) C7 D( c

6 Q- h4 C8 q, s; K& Q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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