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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:8 R7 m2 |7 ]6 _# D
to do-business
, v( {2 S# h$ F rt random 360
! E8 o" v% Y. f7 ^) ]# f fd 1* B# r  y, P+ L/ |) j( n1 F9 h
ifelse(other turtles-here != nobody)[
, w  N/ v/ x: j2 H   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.( n6 j; S9 t+ t$ Z& D7 T
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
- U& N8 {  }  D' h   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
0 j- O; a5 \2 r5 w- q   set [trade-record-one-len] of self length [trade-record-one] of self
' n" I* L0 B2 b6 T# }2 C   set trade-record-current( list (timer) (random money-upper-limit))
: B: v( @, S0 D1 N& f) f$ Z
4 h/ w6 ]5 a+ w2 m问题的提示如下:
) n  @; [- i5 U) F
" I/ |+ D5 Q7 L& e1 B! E( gerror while turtle 50 running OF in procedure DO-BUSINESS* U4 ?9 H7 R- F: ?3 S# t0 T  c, b1 z
  called by procedure GO
  ]! J: J! b' f; E" k3 s! iOF expected input to be a turtle agentset or turtle but got NOBODY instead.
9 _7 [- e( [- d/ X  }9 o. n
(halted running of go)" |) J# Z7 C* o6 ^% z3 Y9 P
4 v! w8 p5 W5 q  n2 t9 k4 a- J
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~~/ c3 _8 A7 q$ n
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, f% ^% s9 i# l% O4 n+ ~+ y* j
globals[& r$ V# v( r, y( o* b6 J8 H
xmax8 z# H( a) A$ j# i
ymax
- {  y. k$ r; K8 L6 r$ U! W# _global-reputation-list
" M0 C3 E7 x( n3 ?, S) L% e* K4 i5 [9 M1 e$ I+ N$ n' R- e: G
;;
每一个turtle的全局声誉都存在此LIST/ P4 G+ w; l- g
credibility-list
7 Y2 K; W/ L7 ^;;
每一个turtle的评价可信度
" Z; m! m6 }! Ahonest-service
$ o  f) O- {+ X. ?( y! [unhonest-service
4 y3 J9 d5 I4 U! Y, t7 Z+ noscillation
- u9 n+ y  E+ `2 l# W7 g9 G9 {; Arand-dynamic1 n( V; Z+ M) }! d, }
]  w+ E2 H0 g/ K# L8 N# U1 `

1 c3 F' F6 J9 A! b, O; @turtles-own[: o! x8 n" x9 _9 [8 X6 u1 L
trade-record-all" k4 [, w  o" I& A! `9 t% T
;;a list of lists,
trade-record-one组成3 c6 m, `8 ~' B- P
trade-record-one8 ?/ T: U3 s4 y' M9 d- b
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
. x; W" |4 f7 B% v8 P% Y) B+ Z
0 [3 e0 U, G, N;;[
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]]
- t" B( Q2 E7 D6 q1 ?, ftrade-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]
% a& V- y9 c: |" D7 D! A0 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list- ^9 E( [+ M, _8 k# X+ D3 z' ?
neighbor-total) d/ H( E; O3 d5 [4 u. P3 A
;;
记录该turtle的邻居节点的数目9 y  w; @$ @: U; [" L: \5 ~& S
trade-time
& p9 W0 J. Z  I9 d3 Z% d9 y+ c- `;;
当前发生交易的turtle的交易时间
5 O! C* F% K% @% Iappraise-give
! }' s. y1 @# Y/ U5 y8 B;;
当前发生交易时给出的评价' k( v& a7 M7 q; U; t: z+ x
appraise-receive
% C3 |( E  v  C( \;;
当前发生交易时收到的评价
7 a, c) K  _0 g. `4 I- aappraise-time
9 }4 ~: i7 C$ l$ c3 g;;
当前发生交易时的评价时间
( s! Z+ Q3 O- A& d  j% Z3 _local-reputation-now;;此次交易后相对于对方turtle的局部声誉7 Q* L% m/ G9 V4 R  z
trade-times-total
- y1 a* }' W2 g* {. R& g$ O+ N;;
与当前turtle的交易总次数
; Q  y0 |# u& p% ?trade-money-total
% }1 g/ k1 z/ l;;
与当前turtle的交易总金额
* ]- f+ D* T( }% D7 rlocal-reputation/ W! S& b( x! A9 K+ c
global-reputation
) K6 C- G1 p! e' `credibility
7 P) c5 u$ o, y+ D: H, \;;
评价可信度,每次交易后都需要更新
$ c$ k7 z1 [  k, m4 a+ Ccredibility-all
; t3 P! b  @# r' u( @: P;;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, i) P7 |( j9 q- w$ P8 p

# R. ?9 C/ u: t1 \;;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- \5 I3 p; O8 V3 o! U! P
credibility-one& `4 ?# m4 Q; `6 d+ ^
;;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people9 [, v( i& h+ ?/ x4 U
global-proportion
4 A! y8 q% Q8 S8 d& {customer# J  \; z3 x; X$ l% `- d( N8 X( E5 W
customer-no/ e# {  M$ w  m1 ?: l
trust-ok# f2 F0 g7 o) m2 H: }
trade-record-one-len;;trade-record-one的长度; [8 h3 a" V+ E' |7 J, a
]
8 I, B7 h" b) V+ y8 O
0 c! g; z* @  N& R9 C2 |5 B;;setup procedure* C) p' j# Z, e" J7 p
/ z& ?$ @# @" Y
to setup- h/ X: X1 Z  |0 P: A
0 H, L4 ~: }" \! ]" F
ca

# O  y9 T1 l. E3 a6 ^+ Z7 H8 W/ j' G$ j% {) V# ?2 n3 h) g4 Z
initialize-settings
0 Y) `3 y, o1 A! A
' C' G9 {$ q8 t7 I) O' t' R
crt people [setup-turtles]
) L0 e: b) x3 ^/ n* Z4 r
$ q7 x, `0 I. U; I; a& b
reset-timer
7 _1 b* g5 M* z$ `5 g/ C! U5 h
: x& e7 X8 l2 T2 k% c
poll-class

: [6 g. G! z+ C3 v- h) y
3 v. V. }% _  v! ^setup-plots

* Y, z$ X" d, {0 G! K/ `3 u; O
6 ^! C% U6 g: x% rdo-plots
, l! R% X/ [! {- i4 j5 Q
end
; S8 W) ~+ R. Y. ^2 q
. v6 J8 J$ V7 q' Dto initialize-settings
2 a' p3 A8 T9 {% ~+ w# v& f. Q/ l- I( `5 H7 K& U, h& y) A
set global-reputation-list []

) v/ X8 s  C$ J; p9 f; Y9 ^
4 ?7 ]7 J8 i& B, Wset credibility-list n-values people [0.5]

2 a0 y1 C) [2 n( B( P: K  N
" w9 @, H* y( e( `2 x/ q, Fset honest-service 0
$ E' u  q0 i! ^" I0 g

- j4 S! L% d$ j- a7 G6 j! Vset unhonest-service 0

6 W# ~9 e5 e( G, C9 X3 s' d8 u+ L
# x+ I$ e' ]. z" Q; ]set oscillation 0
0 v" M1 d$ D, `1 `: ]8 s

; W0 F( r* E3 j0 V) L/ _. a7 Kset rand-dynamic 0
! z. r& Z2 W* s# s
end
# m  q0 ~' d) R+ W$ ]6 F9 [$ e! l" d$ F$ e8 f$ s
to setup-turtles 0 w. L8 m! q# \- @6 y9 \# r
set shape "person"5 E1 ^  ]) [. N3 O0 `
setxy random-xcor random-ycor/ ~/ {, N, x- r, {8 X
set trade-record-one []
0 \/ `/ P: A4 L" U/ P
$ W- d3 K" ^7 h/ E/ @: @
set trade-record-all n-values people [(list (? + 1) 0 0)] 4 c- H' j7 F2 K2 w8 h; p2 k8 t
5 V! _/ m' S8 K, O) H- o+ i
set trade-record-current []
; m0 \+ Y/ }1 h7 Z2 }set credibility-receive []
% Y& h% b# X  x+ y; Yset local-reputation 0.5: B+ e! R1 }9 X9 Z/ D8 t
set neighbor-total 0' |+ u  u8 b2 `# ]! _1 N
set trade-times-total 0
6 C9 b- ?4 J  ^% V! Zset trade-money-total 0* K8 f- O8 Y% o, D9 ~: D" F) f
set customer nobody/ f1 T. y' q. X& n3 p9 F* Z2 Q8 R
set credibility-all n-values people [creat-credibility]
9 w4 M9 Q9 b: ~( eset credibility n-values people [-1]9 h$ ~2 C% j' S" K5 N' `
get-color
0 r4 I% \# q) |1 A0 t6 t

( @1 c' C' Q  iend* I& K  ~1 l  w  P) x
. v5 E4 A( m9 H) x1 b( I
to-report creat-credibility
# z. R- x/ t! J" U* ?report n-values people [0.5]- T' F8 U' k; W5 m2 W
end: U4 d. W  r5 @9 E. T* @; P% f

. x8 z. b9 u. R  ?, L, ato setup-plots) w, z5 y1 ?# K) X
$ Q3 {9 I. j& `) K( {& W
set xmax 30
- j' e  Z  z# _2 X& j3 z5 b
6 \4 b1 W/ m6 b& \$ J% c( z
set ymax 1.0

4 _9 B$ g6 _2 ^# @9 c
" i; B( E2 z" x. g) y+ r6 O' t- d: _clear-all-plots

( w3 n) I0 ~" w' M7 O. |7 C$ W: F8 ^+ i, l
setup-plot1
, ^, @5 |) q9 X" E1 E4 l: g( H

- R. R! p7 X9 Q( I, w' g2 nsetup-plot2
. F6 K! y8 j+ x, t5 X
9 E4 C: `8 d, t2 h- L' ?4 ^
setup-plot3

% x3 B2 ~% l. S4 lend
0 v2 `  q0 j. @* L  s  N) Z
# y* @: y1 D0 M% K5 e! q;;run time procedures6 i3 f) }" R  J8 b. h; A
- g( `% H/ J- c+ }* H
to go: X  i" |) V* ^1 k3 G. ]" Y7 C* ?
5 ]- \9 _+ R3 q  F7 a
ask turtles [do-business]
5 d4 h4 l/ h: v8 j6 R5 d6 v
end
2 N+ P5 D' l% T+ f, V/ W
0 q$ J  |. x/ ^# w3 u! ^$ |to do-business
% p* H- V: h% J9 V0 j, Q
5 G' s9 M2 {0 a( U+ y/ l6 o+ Y
. [5 z- {: H1 ]" a% M6 Y( P, E
rt random 360

/ y# J7 n8 k- R( J. t# L, h5 T, W- `& N# ~% }$ C
fd 1
3 v* ]$ J2 r9 v3 C1 P
* G% t/ U/ v8 A3 ^
ifelse(other turtles-here != nobody)[

9 ?2 R' i8 x* _. |& I  u8 ?: c* b" a& A  k& {% O
set customer one-of other turtles-here
% r1 W) o; _5 t/ g* |8 c- d& N

8 P$ q# Y1 H/ n& x* s;; set [customer] of customer myself
- ^* q' r. `9 `+ q6 S! P( }! I

7 P* v# i1 A- N5 V  L+ |! zset [trade-record-one] of self item (([who] of customer) - 1)7 m3 T$ L3 N( Q9 _6 E% _8 B' N, S
[trade-record-all]of self
5 p6 U4 V1 T2 M9 [# D$ k" q1 k;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
' a* H6 S0 m+ K9 |4 e2 Z, n8 @
& f6 T: i9 U6 i- r
set [trade-record-one] of customer item (([who] of self) - 1)
& c9 C( r" o5 V6 C% p+ l* T( U3 F[trade-record-all]of customer
4 ?8 q) K( A1 ]+ {7 n
# Z1 Q# x" Y$ n1 f$ ~, |; ?4 }1 U
set [trade-record-one-len] of self length [trade-record-one] of self
/ S& D2 Z# [$ }/ e1 A; m
$ m5 f4 V9 C" |: i! y# q! {
set trade-record-current( list (timer) (random money-upper-limit))
$ @" N. V# Z2 r" b: {8 }& k" i, |

& O5 c/ l4 f6 Bask self [do-trust]  @5 X0 S" z5 Z% K+ |) V: j
;;
先求ij的信任度
( j! M2 \4 M0 ^6 a# E. s) N* X- W8 e! s1 z( m
if ([trust-ok] of self)
) T3 h4 R, C- t8 k;;
根据ij的信任度来决定是否与j进行交易[/ ?! L7 b$ M5 y+ i9 d2 S) T
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 m2 ^  A) T( G
/ s$ ~! g2 M9 }6 X0 T2 ^6 r
[
' U8 }- S. H' A' i2 L; D0 T

4 ?7 q4 b9 B7 {  _* q1 h$ Mdo-trade
3 l8 S8 L( ^/ [

, g4 v, m9 o0 X# s7 G& iupdate-credibility-ijl

) z$ j1 D; Y. x( ?, }: R4 d! @2 n* s5 b  y0 L7 F; l
update-credibility-list$ [* @* @6 e8 t1 y0 h. x' [( N
( g9 R% B1 S" ^& E' X
2 G0 Y& N! _5 l6 f: J
update-global-reputation-list
7 s& k5 x' m7 C8 n: |! k6 R
) ~4 o- }2 B- }4 @% a9 s8 @
poll-class
7 g2 b0 k) ?8 _! _  b7 H7 r1 ~
  e9 G4 D4 I4 e
get-color

) \" c" D) ?1 y- H9 J) K" d! |9 E7 x5 z
]]* o) r7 P' P: `" N# i- u9 {
" o6 w. u4 ]4 j1 \* V7 |
;;
如果所得的信任度满足条件,则进行交易% u! s$ B6 N: A( y9 e+ P

. R6 W' t! y1 n5 x' M[

# ~, T1 ?) ~0 K  g5 u* Z1 {* I
; h' G+ C  Q6 |3 `  K% e/ @+ W7 Zrt random 360

3 S6 F$ f0 [8 h4 ?1 s& z2 A* u4 g
. K- `6 j: \2 r* Wfd 1

7 c. n- j  ~0 w6 s: H4 M
2 ?8 J, N% l& w' |- j! P. O]
- ^( x4 t, L* s, j& m

" {  `7 @1 ?+ Y. `; uend
/ W/ H) \* X; @, e  x* \2 z

' g0 G" P# L' c0 hto do-trust   [. h) m6 g7 `& @9 z9 d& W- _
set trust-ok False3 U* h1 X0 Y! G, x  s2 z; [4 K

* X$ E# N7 }8 ]% q" a
9 J+ `( n- c  O! {2 a: p
let max-trade-times 0; ^! U6 K( ]; [; W8 Y5 J4 I" e
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
0 n; l" E/ n9 ~  d/ Ilet max-trade-money 0  c7 _# b5 H/ r9 Q$ p* w" `
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
) p0 C1 E( b4 m4 G. D: alet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ U  t& u4 \) b& X/ l1 s% o) ?/ i; |+ l4 }5 b) i5 S& T2 L

) B8 b$ A' `/ G5 tget-global-proportion% `0 L* J9 T+ a0 q7 F% t
let trust-value6 [# M+ U0 I+ l- A" z% n  `9 j: ?
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)

. n. f0 X$ i  T* D  |' wif(trust-value > trade-trust-value)/ ?2 T1 o% a4 _# n8 I- E
[set trust-ok true]) a  f+ Y+ b$ i/ L8 W: ^. A7 K
end1 o5 q& r( v! w5 v' J* g; S
6 M) d8 A) u6 \. I# B# b, c
to get-global-proportion& [* t9 P3 o8 a# f$ y
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3); x) P9 d. U) v) o* B% J; Z9 d
[set global-proportion 0]
) U4 x2 h- {, j7 h- q, z$ C3 H[let i 0
4 F2 c$ H8 j" P& \" I, Olet sum-money 0
, [3 G4 _8 D* S! `) N  P; x) \+ q7 b, `while[ i < people]
$ ~7 J2 L& b. P$ _- r$ W[
# K* B8 R* Q- B1 {1 v) fif( length (item i
8 P' k( q2 H- g+ R! a; M% T  e[trade-record-all] of customer) > 3 )
6 o- P$ i: `6 a
[: P* E! v. u& i9 d4 L" T
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
, Y5 P, i  `5 U. K) s  W" X2 L]
& ^5 r5 s& x- ]]' l5 \: `7 E: H$ Z  k3 i& I
let j 0/ L* y+ m- t7 N* Y
let note 0
4 g3 E: V: g- t. O6 K6 ewhile[ j < people]0 y( ^$ \6 c+ X) }9 W
[) l, U* b7 I% s7 x
if( length (item i
2 ?4 |: a3 [( b+ p8 ~( W$ g5 m9 s[trade-record-all] of customer) > 3 )
) w  v1 u5 Z' p6 \  X/ N  M
[& A' j6 _/ \+ J" Q- j
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 u) c6 B4 [5 e7 L4 n9 `! N: T- h
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]# t" |* o  }9 h! v1 Q% Y' h
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
6 q- p+ O6 m8 _! K]$ I/ Q5 d+ }# n% s. P
]
% O+ W7 t# G& Tset global-proportion note
' X$ I3 R# u6 |3 Q  n$ {  n]" v  T$ }: `5 C: f: `: R
end! E6 w/ C. j; h; W) h

6 S: R  n  Q/ X# ~1 @" Qto do-trade- A* \# W1 O! I* d- V
;;
这个过程实际上是给双方作出评价的过程9 D& }6 u# X7 W% n
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价" z0 ?6 }1 W4 n5 M" u
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价) m, S5 C3 u& P3 s! {) F
set trade-record-current lput(timer) trade-record-current1 Y' G& R& p* L4 W# a# X  d
;;
评价时间
* n, }2 B& c' M6 h7 d; C2 ]3 aask myself [! K; J+ H9 }. q
update-local-reputation) `; H7 \! u. k" b8 K, E% h
set trade-record-current lput([local-reputation] of myself) trade-record-current# \4 u4 p7 ~: X, y: ]% t& g
]- q! M. a9 R  P4 O  b3 i  C
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself: {, Z0 l9 W9 f: J9 [( ^
;;
将此次交易的记录加入到trade-record-one) R  j& T' `( T* p% i6 u, ^' w% ]
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
" V3 o, T% Y% S6 d% J" ]let note (item 2 trade-record-current )4 B; A$ [  o: A& j) o
set trade-record-current! j  V+ Z5 H8 M1 }
(replace-item 2 trade-record-current (item 3 trade-record-current))
$ n' w0 T$ V8 |( Z4 L0 ~6 D$ \7 l' @
set trade-record-current* n  T% M' A( j9 r, ~
(replace-item 3 trade-record-current note)
' W0 T+ H; R7 n3 F/ q3 p
0 N5 s1 N+ G. v9 x
1 @: F2 B7 u. ~$ r
ask customer [4 I4 B* \7 G; _5 q/ _6 f7 y5 g
update-local-reputation, V) ~0 a" k/ J* a' ?
set trade-record-current; t( l! [. C! }+ E9 N
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
, o6 y" h- _$ `8 }9 u1 Q
]
+ A& k0 s1 _4 I* C
+ P" M0 `1 S: D1 T/ v. U
4 ~% b8 k6 G+ j2 _/ c# j
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 Z" G" m7 R0 Y' L/ ~
5 R( v1 j& |& @# `4 B) K8 Z
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))& A% [) [$ v: `" K; l$ E
;;
将此次交易的记录加入到customertrade-record-all
  f. [1 U6 g/ w* \3 Aend
) {8 s1 r1 K+ l* u
4 f" C6 p. W8 }' A5 x& ^" ~; Pto update-local-reputation
! M/ L. D  q, Z+ tset [trade-record-one-len] of myself length [trade-record-one] of myself1 c5 H& c% w$ k; k) n2 z5 \, o

; x+ L. V2 r6 G/ V8 e3 t
* `# _; b9 m  u! ^. F: g;;if [trade-record-one-len] of myself > 3

. n- I' t4 j3 Pupdate-neighbor-total) U3 l- `, L0 @" q1 I/ ]
;;
更新邻居节点的数目,在此进行
6 P% J  V5 A: y) Clet i 3
& [0 U7 w( ~) U! @let sum-time 0
; ~% x! G5 l) L% J6 X. e8 kwhile[i < [trade-record-one-len] of myself]
% m9 F7 j; m( }9 c9 N[
7 i7 D  T7 S' J! Nset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 q4 B" C8 a; v! T2 jset i' w: z+ R! _" u( y
( i + 1)
: ^- l9 C& h1 a% d1 c6 i8 C3 @
]  e2 N# a( T0 [. r, x8 Z' E
let j 3
6 ]) q% k. B) ylet sum-money 0
# E. g6 ~6 B& F8 f5 ~while[j < [trade-record-one-len] of myself]
! s  b: j" c4 T& u5 M  Y; h5 y[
1 f) i" @- c2 w9 j: jset 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 y4 e, M$ n0 Q3 t+ v9 tset j
& ^' ?% F1 F7 V. g" F9 _( j + 1)
4 z: u  K; o" c- D' ~
]
. i8 A/ `/ j8 Qlet k 3( F8 I" o. v) n' ~
let power 0* H, ~5 A$ o: D; B, R; f
let local 0
* R2 \1 t& j5 M. F- h# m. iwhile [k <[trade-record-one-len] of myself]
- N& B* S- P) V[
$ V  L0 `* f8 ^) S) o9 D; `# qset 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) - f8 R' Y) K( M  U6 T6 B
set k (k + 1)
* s/ G9 K3 U3 R8 [9 \& K! K]: U2 j' ~; o, c& w! S2 _2 p+ r
set [local-reputation] of myself (local)7 \1 n1 q6 V. ?& J0 f! U
end& }. P0 |# d- T$ j  d2 ]
" U! o% J& b# t3 H- t
to update-neighbor-total* V9 m" f5 B, @0 e
& ]! t( @9 E* s% F5 }
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]9 Q6 m8 X' e& T8 \0 ?9 {6 H$ ]
1 x1 H$ [& K$ o) d
: E+ j* d; k/ P* f; N' v
end) l8 N! t* i- T8 R. r

  k; o. f6 A( i  e/ g0 [% s& W$ bto update-credibility-ijl   L9 o* Q. y8 \6 d' {  R; J- s  Z, Q

% W) Z: ^$ ~4 y9 Z- u;;
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。0 f, Z! R) f" H) u% V
let l 04 x9 |$ U9 A/ D1 J# r
while[ l < people ]( R! j* [/ S5 Z  g; a; ^
;;
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$ n% U8 `: p! `[
0 z- h# A6 [9 U5 B- p$ N& ilet trade-record-one-j-l-len length item l ([trade-record-all] of customer)  f6 `# M; \/ c, a% l" p
if (trade-record-one-j-l-len > 3)
8 Y+ n% l) u" ~( e) U* u[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-one5 Q5 t. X2 h# A+ |0 X& _
let i 3
5 s4 R% E) R0 V) r: U+ i* `let sum-time 0
( z& z  [- C% C. x6 Z& \& Vwhile[i < trade-record-one-len]
" o+ @5 W9 W. t  j4 `* s3 M$ W[$ E# X3 p3 F" S
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
3 z: n! Y9 T8 J& s9 h3 c3 bset i
1 b  A2 K/ U! C7 w$ X. w: B9 x) Y( i + 1)
0 Q; R. B9 R; Z) M" f4 b
]
8 S- Y/ k' K+ U# e3 Hlet credibility-i-j-l 0; i4 Y1 x* T$ x1 d; }  \0 x& z7 Q
;;i
评价(jjl的评价), {! t3 s2 [# |. _# w: O6 G# ~, t+ O/ O2 x
let j 3
0 t$ H/ p* U* g% g4 ]- q. ~( Zlet k 4  W$ X- O  w) \7 H
while[j < trade-record-one-len]
$ ]% i  b; L1 W# p+ w' p[
5 _  M" B5 l) K: pwhile [((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% M, T( V  V; v* b- _5 i
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)/ K/ e0 Q/ @6 i
set j
: k1 c8 t# }% N$ D8 b  q( j + 1)

4 y, Z/ K5 [/ ~. f( C+ P, f% t]
& T3 q7 B6 I4 e. Mset [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 C2 W1 v+ Q0 h+ c
" H$ p1 u( C( B
3 @3 g/ {) a% b0 [
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))9 m/ _2 X( Q% n4 n7 \% Y0 n
;;
及时更新il的评价质量的评价
- [* {) q# o  @5 lset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 o5 I8 ^$ _' O/ N0 \1 R& ]set l (l + 1)
" r2 X/ U7 v. X0 m1 h5 z6 J1 m# [$ R]: e3 \2 H7 E2 \4 }
end& |5 D9 N8 j! J

6 Z- i8 R8 e9 L9 J( o# ?8 bto update-credibility-list$ H  o5 H1 Z0 Q5 I% e% u
let i 0
, j. y0 ?6 l9 Y! F" }7 U3 twhile[i < people]* }1 Y" G" U9 K; \/ t
[
8 ~' B, ^  O4 y3 Y1 Rlet j 0
! X+ f5 _: S% _8 plet note 0
6 i  N2 k5 X! w1 Z, y# mlet k 0
0 H5 R- v" S, d;;
计作出过评价的邻居节点的数目
# s3 J0 P" e3 E4 V% mwhile[j < people]
+ e* N+ O* Z) D; y- b[
0 f( G% a) ~% ]" G7 Nif (item j( [credibility] of turtle (i + 1)) != -1), A* c: t$ y6 M
;;
判断是否给本turtle的评价质量做出过评价的节点
+ `$ X  x- t6 I: {) }6 B[set note (note + item j ([credibility]of turtle (i + 1)))
- o6 C3 y" V0 w) `1 D2 L6 s, G;;*(exp (-(people - 2)))/(people - 2))]
, |5 o; F  W1 p' c0 v6 m' X
set k (k + 1)- n! p4 c( q5 W4 w
]
1 l4 C# V8 P6 P3 h# Q# b3 pset j (j + 1)7 K, B1 I2 k. J2 \: ?, [' Q/ R( Y
]& l1 d# w+ v4 a4 n0 r! r* G( ]% Z
set note (note *(exp (- (1 / k)))/ k)
$ S% |* Z. E) \! Kset credibility-list (replace-item i credibility-list note)
$ X1 A! H; [, g" @- N' yset i (i + 1)6 ^  [, b* E4 U4 M
]1 {9 V6 N5 f7 [5 E. j" @6 }
end
  E+ d, x5 O! S3 v$ W; c1 ^. j7 {+ t: l- w7 ]. n+ @" j5 o
to update-global-reputation-list+ R+ w& C6 g3 [
let j 0- c/ j" _- a( `
while[j < people]2 @2 G7 c4 h9 @* k( w$ p- C. D
[
0 c5 C, q- R3 }, \* i* r9 vlet new 0
! j1 k" G% F. H) u;;
暂存新的一个全局声誉6 k: Q6 {* ~3 b& R
let i 0* J" N2 u) S0 [, c
let sum-money 0
4 @9 s5 }6 X/ q6 G& slet credibility-money 03 W- K+ M& O) P0 C  G9 O, A
while [i < people]; ^3 [% z" z3 q! P" g
[; [& ^' E1 l& p
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( e: O+ Z1 v/ t. L! R; F8 P
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
, d" d  l1 H! T6 _, Pset i (i + 1)' Q! g7 A" |7 j$ w( t3 w0 J8 k. u+ k
]
0 t# X- _& `7 l! glet k 0: ]/ r5 V" w- B& W4 Y& _8 J
let new1 08 L, _3 v1 ?) b6 T8 G, {
while [k < people]
; m( m( {* g& R4 a9 E9 Q) Y[
3 E& t& [2 H/ Q, H/ p2 Iset 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)1 k( Y/ a3 ?$ j3 N7 {
set k (k + 1)
- e3 [' q; N7 K, A/ `0 O]8 ~8 X, g" |/ Z0 C' X
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) % T. b1 Z9 _2 B( _, P
set global-reputation-list (replace-item j global-reputation-list new)
6 ?9 A/ d8 k  j- h: r! sset j (j + 1)
& Z, x- b  X3 f) T8 n. g& I& q# S]3 Z* z8 s3 p9 |
end+ t( J. I) G; E8 q
, z) ]! t1 H9 I6 s) }
4 |# A% I) E- ~! s% n' t. w7 Z

, U  d, }% k+ n6 d8 V1 g' d/ eto get-color
' R5 ^  \8 O% U7 I: ^6 r* w. K+ ]5 l$ i! j+ H- P: w
set color blue

9 f4 L" r1 Q0 L# F3 D: X- R) E# Mend
* C' c% ]- k# q  V+ h& o: y- @! @  d2 d1 b2 K* z# \8 l
to poll-class
0 F3 C# `; V& B' D" _end
# W  ?; P' z$ H2 x! S# q1 h
3 V* s1 r  \# g* l) E) nto setup-plot1
, M/ X# x0 K' N# [- f. V; s2 Z
3 V% Z  ^9 Z/ @- l7 a( hset-current-plot "Trends-of-Local-reputation"
6 W: S. o. q* B7 O4 Z2 z' A
4 g$ U0 x$ G; G" g/ j# ?" b, j
set-plot-x-range 0 xmax

0 y7 a, ~' G% Q2 @# e: F7 R1 h' W7 `% m- q. u
set-plot-y-range 0.0 ymax

( s, R* E$ I4 oend
) P- v7 ?# p1 C
. f' b( }! J+ y2 F; X/ [1 dto setup-plot2, _8 Z; W! {3 o, g8 P

1 ]* ]. Y$ [" i$ q: E6 u  \4 f7 Wset-current-plot "Trends-of-global-reputation"

% O( K2 h. w: P8 Z% g5 ]: s3 l, h5 C6 o
set-plot-x-range 0 xmax
1 T% Z( l( k3 G
5 V) t2 n, Q; e/ P: W8 ^
set-plot-y-range 0.0 ymax
) t# y+ S5 F. z/ b7 C& Z  z* w
end
7 D4 `5 k: A6 i# r) F6 b3 r
1 p8 P4 v) s/ ]" D1 g/ ato setup-plot39 y/ m) ^. e" K* R& M& i
2 {$ i: q1 D2 u9 `1 Y, y$ {- p7 t7 ?
set-current-plot "Trends-of-credibility"
: v2 b" w  ?8 C; l# _" U; C- U

# ?  h: q9 E* jset-plot-x-range 0 xmax

' W) V0 K* u6 k% b" r& w! `% L! F$ C, J$ c
set-plot-y-range 0.0 ymax

# L" j; i( X3 t) w9 f% w& Iend7 j$ e7 L  S% p) x. \1 D( l) u

( X7 U. d' g, U* a' W7 `to do-plots
! `3 X; y0 w/ e- ?set-current-plot "Trends-of-Local-reputation"
9 D0 x3 t' h) \% G9 b; k2 D. {set-current-plot-pen "Honest service"& L0 K5 l2 L. u9 T2 R8 @9 N* {1 F
end
) v& Z( w: g& m5 u; y, S- k) O, Q7 p: W& y% |
[ 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.
& }( ]$ Z0 T7 {9 Q( l7 X, S, x+ l6 l& H" k" j( [  j4 n
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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