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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:
7 ?0 g; U" k0 s8 Z& F  l* f" ]to do-business
' V8 Y; X0 A6 o rt random 360
2 b5 Z) f5 i0 v& Z; S, W% U  f6 { fd 1
7 Q, Z5 a9 T+ q8 {" V ifelse(other turtles-here != nobody)[) o* q4 F) 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.! D5 t" Y" d+ u+ G0 N% z2 U  g; X  D- B3 M
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
3 x  W  L" y! V5 R* r2 w   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
1 [& I6 g* i3 c5 k+ _6 l# }   set [trade-record-one-len] of self length [trade-record-one] of self# S  ^8 n* f9 k4 ^6 ~7 Y, n
   set trade-record-current( list (timer) (random money-upper-limit))
9 k3 U1 |" N/ g  D
! P4 U/ p# K+ ~6 P2 N问题的提示如下:
- a7 o; w9 h. t# q0 L
( z1 b% v6 ^, Y- S5 ^: [9 K  Nerror while turtle 50 running OF in procedure DO-BUSINESS: C6 @" w8 E" T/ v" [
  called by procedure GO! u( n9 t8 ], v3 Z- e. L  @
OF expected input to be a turtle agentset or turtle but got NOBODY instead.6 U3 @& a3 s, C) j0 R
(halted running of go)
/ [) e; @9 Y8 V4 [* y% [
; q6 W/ F0 v1 _+ D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~~7 j* r  s1 k* Z$ [1 v
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4 _( G; L) z8 W! ~
globals[
+ ]# H  ]" C: Y  {& @9 Q8 O1 wxmax
! N! V: ?# r' t  gymax
+ U" T6 f, s' s* {, Uglobal-reputation-list$ F% L0 T, B6 o5 H  E
; C/ _. N$ u( X/ i. S
;;
每一个turtle的全局声誉都存在此LIST6 ~) e. N+ ^6 s: R% F+ W9 W
credibility-list
" Z& l7 K$ j6 }7 S. N# A/ c;;
每一个turtle的评价可信度* E* O) Q8 B" D9 n0 t! ?
honest-service
  Y; ^2 L( R. _) e$ ^3 I0 F: w9 lunhonest-service: ^- d8 j& \- }( x) A, E$ G7 P- W
oscillation' V3 C: P' _( C0 q
rand-dynamic
+ j5 w' F2 z, u+ Z]; X. Z  c& X' g& J

5 _" t  ~, ^# @  @2 ~turtles-own[/ e; B8 n6 X3 L1 I: O
trade-record-all
  w: L! x' {: n& q;;a list of lists,
trade-record-one组成
' F' i4 F1 m0 Z3 R$ Q/ t, b; Otrade-record-one2 p( s9 m. i+ j/ z
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录: q# ~. S3 R* a
; r5 T1 W0 ~- ?( N) z
;;[
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]]9 w& s  i0 Z+ {3 P8 d- [
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]( P/ A+ c, J& {# S+ o/ J6 g; r, P
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
4 Z6 ]' }% ?+ p" H7 Cneighbor-total
; ~4 x9 U9 N: j4 w4 n0 f7 ^' B, ?! @;;
记录该turtle的邻居节点的数目
! }# A$ k* j, ~7 Strade-time$ `( ]* C5 J$ I2 J
;;
当前发生交易的turtle的交易时间2 q8 ?+ n& V/ y. z3 A6 t
appraise-give! T6 k, @3 J  k! ~8 i, B
;;
当前发生交易时给出的评价( W% x% @3 ~  {9 J& I
appraise-receive+ l7 M9 [1 ?- U4 N/ r
;;
当前发生交易时收到的评价/ t( C2 \2 i) a$ K, S; a/ j; V
appraise-time
8 i; {; P. p; ];;
当前发生交易时的评价时间
- k" q4 `( i# W- Vlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
8 `* @  w9 I# n& C  j! Y- ntrade-times-total( o, s2 ?8 F2 l! R. s- B" d
;;
与当前turtle的交易总次数
0 V* n4 P8 _5 G9 G" Ptrade-money-total$ _% v8 [9 f8 R& b& k9 u
;;
与当前turtle的交易总金额
0 O) J& K5 B. X% Olocal-reputation3 F& |$ y! Z( ~& P  r* b3 B3 M" `
global-reputation
9 C( l7 C  Z$ P5 z/ mcredibility; m# A* Y8 f' {  {& w  h
;;
评价可信度,每次交易后都需要更新
# k$ e8 c- _! |credibility-all0 t: j+ a6 q, v* g+ y5 J
;;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2 j5 B2 ^, d" G9 v
$ @, d: d) q+ J
;;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0.54 y) W. U: o4 G- `
credibility-one
4 Q- w2 r- P  ~4 P- f, t8 f6 y;;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
  \. }4 ~: f: a) Z; d: Xglobal-proportion8 l; W% n  c" q/ _6 V+ J
customer, R1 Z) g) Y/ ]( Q! U
customer-no/ e$ _" f- l7 e/ Q- W
trust-ok
5 ]) j1 O$ G* e2 B. Wtrade-record-one-len;;trade-record-one的长度
4 o5 q- X! j7 [2 ?9 R]
0 _2 S9 K/ k6 L. P5 ?) b4 |9 \2 V" j. f( T
;;setup procedure
. V, Z; O& K% c; Q  v
: J5 I- }6 C+ q/ oto setup, X" C  ^2 ~( h7 [/ h2 M! W6 m# t) m
5 \0 I. ^8 x* M; \; D0 `5 d. F
ca
& c3 s: G$ [& S8 t2 z
, [: W# c# H; F& K  \- }( h
initialize-settings

* B% j7 y" e5 ^# l2 Z. T7 E# ~, X% |+ f, d( @
crt people [setup-turtles]
, q: t1 _+ f4 F6 {! i
; R; z& |1 o6 w& g; }/ e
reset-timer
( D% L) w* h; @. k; G7 I3 }

7 G9 b0 K( o5 q7 U/ |/ j5 `) F1 `poll-class

' B* k. f) r' G+ N* R% K: o" }
  a3 a3 i' h( a3 P& c2 I+ g$ Psetup-plots
3 h6 m7 Q, {5 Y  m3 G& u

& D' Z5 d5 x' G  I0 T+ }+ x( G. edo-plots

# M/ w: H8 l8 jend
9 U. s! H6 t# w1 t
! v% l8 F7 v3 a, u" fto initialize-settings
1 Z. `- ^4 H' h3 P
& E3 s0 r) j1 x# @set global-reputation-list []
5 O6 P. D3 n) o" o) S  n. f7 K
& G" J0 T- v3 R: O+ G5 n8 y
set credibility-list n-values people [0.5]
/ k0 H" ^3 ~: _& ~# U& b

* K( \, [* y. d* dset honest-service 0
6 ~* k. `0 I( o, n4 M* y

) S3 X- w! m' cset unhonest-service 0

' |' q$ f, [; p% w8 Z# s1 V% H! e: t$ m! ?2 o% j; q: d/ @
set oscillation 0

2 \6 }9 B" l& L* b$ u( @1 @
8 _6 b+ @8 Q- ~# u& ?: U# Bset rand-dynamic 0
: n9 ?6 T6 l3 N( S; j8 e
end7 y' L# Y9 J: b6 a6 P4 ~( I

+ N4 M; c9 Y8 o7 G* D1 ~to setup-turtles
7 n6 h0 L; I- R% [9 f$ Eset shape "person"
% a) h7 I% |& k3 X4 a5 ~9 t/ Jsetxy random-xcor random-ycor/ }1 y" ]3 K/ `
set trade-record-one []/ Q1 D; ]. S, Q& y% ]; u8 T

# G# V. E5 R. S# {( T( U" Vset trade-record-all n-values people [(list (? + 1) 0 0)]   E" N9 }: G1 F" v7 M( i+ U
; I0 h# R$ B8 ]; o7 B1 j: k4 A
set trade-record-current []3 A7 w2 o  X1 v; I% v
set credibility-receive []  [8 k; d% D9 T
set local-reputation 0.54 }; c! a1 ^( }
set neighbor-total 0
6 |9 {2 V# \* F0 n, B" ]set trade-times-total 0
/ M& e2 U: |; F. w& [set trade-money-total 0
( g* y' e0 x) A. |set customer nobody! j. T* @+ g9 ~
set credibility-all n-values people [creat-credibility]
: T: C; @1 D! Q- w  \6 o, Pset credibility n-values people [-1]: O  Z' m# y% e$ a
get-color
& B( s: F- a1 e8 e/ `/ ^0 Q

  ?; ~- M9 c4 z2 b/ lend4 b7 T: E1 U4 {$ v9 \: @$ v0 o

1 Q3 i1 q/ V8 S6 Q" \" h2 Dto-report creat-credibility
; ~0 ~+ p' c) ireport n-values people [0.5]
. X' O& m, j5 a1 kend" g0 I! a- L$ K4 e: {

' ?: }' K0 O9 n  r; c1 ~: Wto setup-plots& C) i5 L$ n) _
! \. G1 B/ c! u& m% t; ]3 M
set xmax 30

* I9 q( I  ~4 w3 D8 X0 r( `9 G/ o5 d9 s& t/ {# x4 P8 ^
set ymax 1.0
1 ^$ X9 Y3 T3 {$ [
3 L- x0 V4 O" E, Y: E7 t  Y. |
clear-all-plots
* q& t% F: ~' f0 s
7 ^2 B- f" {+ L5 X) b4 r
setup-plot1

7 z8 E0 q  o+ r0 E, I/ @, u) E4 B" d: @% Q! A/ \
setup-plot2
# H  _) |7 w, Y: u# z

; S* |9 \! U; p- z# b) G% Wsetup-plot3

/ p* N/ l+ J+ f, S, L9 fend& j8 ^5 d) Z) x% b( E  E8 V
$ Z; e9 O" o; A9 v7 h' {
;;run time procedures; q+ G) j6 m0 \

) i& T$ |# N2 P+ Y" \3 pto go
$ G% T6 t" t1 X$ z! A5 c9 X5 f9 M) T1 v3 U& q
ask turtles [do-business]

- c+ l4 g2 P; `  ~/ I, m6 wend
* `4 C# S& ~8 d- H! Z
& Z' G! s+ R! l2 [) Qto do-business / `( k' j/ a! N% n9 e

0 X- K- n# H/ D6 Z4 z5 A" |3 d- t1 D* A  U, G; M' o
rt random 360

- u7 j6 z) K+ b+ I" E
& X$ A  O% ?# e- w- I) pfd 1
0 V# V# W* ?7 H1 u3 H
0 D! P, a# v" ~! o  w* N) _( I" z
ifelse(other turtles-here != nobody)[

3 W3 y* ~( h. N$ ~$ G6 ~+ K6 S
; a) ]" e; a$ r" p8 R. Q+ \set customer one-of other turtles-here
. y, ]' K' {% W* {. V  k

0 a/ ~5 y3 T( H9 b/ `1 D1 `) U;; set [customer] of customer myself
& B- Z* G. T1 d2 N" n+ x

/ X! s) ^& o& }5 W9 r" nset [trade-record-one] of self item (([who] of customer) - 1)5 h1 V4 F# X: b+ C# x! y
[trade-record-all]of self% _' P0 o, A% ^( L3 Y0 m# V1 P3 e
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

7 k9 S- y1 v* Y$ ~& \' C9 H5 K* M4 v! ~/ Z, A
set [trade-record-one] of customer item (([who] of self) - 1)
5 M7 T: y; h* {' F[trade-record-all]of customer

% c9 y" R; u5 L) I& r
4 ]$ p6 J2 K% b3 Q* |set [trade-record-one-len] of self length [trade-record-one] of self
/ w$ r6 b" i+ @) C7 B
$ h! a4 P# s! Y; d) b
set trade-record-current( list (timer) (random money-upper-limit))

  Y$ d* c* @4 R. S
* Q+ W: Q9 j5 ?& A, `1 Jask self [do-trust]
; a3 z) P+ D8 C  h2 E;;
先求ij的信任度0 [/ k) h7 C) L# K% ~/ _' ~, e

) y) i( ~0 y, w/ q" g4 bif ([trust-ok] of self)) F4 s6 z0 B; E3 D$ y0 H
;;
根据ij的信任度来决定是否与j进行交易[
; e" ~2 F1 e7 A6 Nask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, h# {; ]3 F: g* W! ?6 V0 e8 @) j* x5 G( H
[
6 i. m( j/ C5 V; X' g* U5 B; O0 j
5 D- `1 J: p7 M
do-trade

3 P' i; F: _. L
' H, \: d2 C; e$ wupdate-credibility-ijl

4 f$ K- R7 \7 w' ^% ]# x9 X/ i2 `: _, W! l/ i9 d1 Y& y2 y
update-credibility-list
" D5 H* X: i! L5 X5 F6 A
* u) v# A) C/ x

" b, T8 F5 Y; s& l6 b& iupdate-global-reputation-list

, @5 w  ?( z5 N$ I( L6 F' ~9 `* A
8 F; `( m" \: m! Mpoll-class

% G- T4 F! W$ |  t) |* V! K& k5 I8 C8 c7 K# q! U
get-color
" z# h6 g+ {: z6 `+ X- Z
0 |/ q8 l8 r0 I
]]8 b! {, G9 X2 t) J) ]

  X8 L2 i9 E/ h! f! G;;
如果所得的信任度满足条件,则进行交易) g# H- |: X0 O9 D5 W8 n0 F/ S

3 x( x0 b# }% N. n5 w* e[

+ x9 r  [7 g% m8 O) G' m
/ C" `, T7 z) {rt random 360
6 v& t& c/ Y3 n8 R  z1 W( U
5 ^" z7 G. g' b; l+ R+ ]( q2 U
fd 1
# L" y+ O; ?/ @" g5 Q: j

% q' \  q) h/ G0 l% |; I2 m]

( _- D3 k; g! ?' Q. D& P3 a! f) t3 ~* G7 P6 M7 W4 D5 _+ q2 r7 T* }
end

5 z2 M9 F1 _) n" w$ R* C3 O2 j  x& `' U' Z
to do-trust
" l# u; J+ t! N/ ?5 bset trust-ok False
$ c7 n2 f& b8 q6 o6 W8 W9 ^8 P) t: R" J
, s8 P( v2 T0 P+ {; a: I! Y
let max-trade-times 0
' h: n* m" P! L0 Kforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]! V. B5 U# G: {+ D" |* ~! j
let max-trade-money 0- \0 Q2 S5 ~+ `2 ?7 d2 Q! T3 Z4 u
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
" M) F' `2 j' R+ nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))6 p: J. y! e9 ?- Q0 E' H" Q

5 d$ w7 X! F/ ]& T

8 ?9 C; a8 \8 \7 Q( Mget-global-proportion
  ?6 E: _6 [5 m3 ]let trust-value  V9 ~: N9 y3 S  h4 k
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)

5 p) m( R& I2 z. aif(trust-value > trade-trust-value)
# ]0 S+ ^+ y- \[set trust-ok true]# a9 t: G& a2 W- F
end
1 i* w% Y- v7 F2 @- d1 I& r. j4 w3 Q% [% ?: i& D3 @
to get-global-proportion) D; `9 @: i0 ^* ^* j
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)- M8 Y; O# Q: }
[set global-proportion 0]# [2 Y# D- a: ^5 H9 F3 r
[let i 0
" s1 Q0 u8 X2 l3 n3 zlet sum-money 09 @9 G$ D, E$ w* x
while[ i < people]
1 d, b9 e: [" O- l3 m[
( S) O0 m5 V$ }2 ]if( length (item i3 m( ?3 J1 o6 x! b
[trade-record-all] of customer) > 3 )
# U7 Y) A4 o9 n5 `' A/ W, o% E: g: k4 K
[
0 I0 M' [' ]) w  I& i% L) hset sum-money (sum-money + item 2(item i [trade-record-all] of myself)), Y! O2 m" W5 N9 G. }
]
3 U  s/ K9 A# ^* ], T. R]
- Z( |  P1 Z1 {6 p7 j4 x  ?) y5 Q( _let j 06 q2 k8 e2 \- v
let note 0
" b( P4 g+ u" Y7 _# P  a$ @while[ j < people]1 \9 }, `4 |8 E) u5 g/ i% B
[
; W: h" P. F6 `- U) U- Pif( length (item i
0 k& l: m5 _! N. ?[trade-record-all] of customer) > 3 )

$ P& w/ ~7 G( {' p0 Z" Y; S[
5 ^7 ^/ ]: q" o1 oifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)  I* |9 i# ~/ ^# f  u
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# Z# ]1 K0 p( w1 y4 Y! q[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( z! h1 k" a4 c7 k
]
' L  |% |6 o7 s8 D3 o8 U. f]# X" z& R+ h; }# m! x  ?/ g& ]" b
set global-proportion note
5 l2 a$ z" H4 A9 i]
5 ?# Q, m- u1 Mend% o! R4 N. ]) ~: D3 q9 X1 Y* B

. _) c0 Q* b& Z6 {3 h3 {0 X8 H; I3 Wto do-trade( ?3 V. E3 t3 `$ P
;;
这个过程实际上是给双方作出评价的过程
" N' W7 f% I6 `2 Q. xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价, n# K6 F+ {& ~& m7 Z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
& u/ d- y0 u% }$ K& X! F' }' |set trade-record-current lput(timer) trade-record-current
1 E7 W6 y+ j+ l: _$ Z; C;;
评价时间
, O. q2 p+ X! U$ v( Q' e7 l( u) nask myself [
& A( N/ u& u6 N  `" A9 ~* M8 F+ \) Cupdate-local-reputation
* j: {0 h( H3 O' K8 ?7 Fset trade-record-current lput([local-reputation] of myself) trade-record-current
& }# R3 y/ c& q]
* z5 ~5 u' ^/ a# h% i! Hset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
/ ~) G, h. c, r8 o9 U;;
将此次交易的记录加入到trade-record-one: O+ p6 J2 g. t0 Z' C. k) F
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
; p1 F7 e  i) [7 Glet note (item 2 trade-record-current )' g6 _: o: c5 {2 ?, ?
set trade-record-current
" G. L" t; H) V% i, t(replace-item 2 trade-record-current (item 3 trade-record-current))
, r* y- o3 H; j; G
set trade-record-current0 `: b6 y9 a, D. b# d% T, J' J
(replace-item 3 trade-record-current note)
) Z# |, Z3 r7 R
6 v0 f$ m! j% U/ y& g
- j) k0 [5 _9 N' E% X, `* u% U
ask customer [  }+ C0 ?4 G" p5 o) o: k) m/ h
update-local-reputation0 ]5 c& B. Z, f& ?0 O  |2 B1 L, c
set trade-record-current5 L6 w0 q: O0 Q. m) d7 `
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

8 t, ^; M) e. C( P: W]
+ r) [. y! O% i* q4 n( N$ M: X; t
- w8 F# _: [# P( k/ W; m

2 S$ G8 c% ]6 k' T; sset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer" V. F1 g" O+ m2 O+ w1 r2 x7 T

* i( |3 b5 _4 D/ _- u; xset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
$ q% A9 H' |% c& v2 }8 W;;
将此次交易的记录加入到customertrade-record-all
) j1 y8 u, D& X( Q  m7 }& jend
9 _# j1 K! ]1 |. }, H. }8 \- A7 ]
  A- q2 `- [6 ito update-local-reputation  \; _3 t# r" B3 |2 v' u$ B
set [trade-record-one-len] of myself length [trade-record-one] of myself
4 T+ q/ f$ i5 M+ F4 C
" P3 G+ Y& H- S3 t# K) s' `5 Q1 _: p
;;if [trade-record-one-len] of myself > 3
$ X" y0 \) z7 B; G( b  {
update-neighbor-total7 z; `3 p3 C1 {
;;
更新邻居节点的数目,在此进行9 u& Y% J6 x6 I  A* C
let i 3, a- W2 V1 ?5 m8 y% j, X
let sum-time 00 b- ?5 C3 a9 l; h: H) L
while[i < [trade-record-one-len] of myself]3 E9 H9 ]9 Q4 P
[
* N# S7 t( G1 r5 ~+ i5 B  ]3 Vset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
& X) |7 ^- P) s) _1 iset i
; p/ y& ^- Y3 e$ d" F8 D# b( i + 1)
' V1 V! B9 r! n% }; a
]
2 |$ z% z3 v& y; F! [let j 38 s/ `# r, |# y3 y5 \, M
let sum-money 0$ s$ ?! f  _5 ?/ ^
while[j < [trade-record-one-len] of myself]
: p) G* H5 C  f& L7 ], X0 L[
) u6 L# J, s, W) rset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
- o9 ^+ ~3 Z) Nset j$ M: |; m' W4 @4 A
( j + 1)
' h9 K5 W) {6 `& O* z: s
]4 w  Z: }* K- [' `
let k 3
: O8 Z1 s8 ~4 q9 S9 llet power 0- l1 J& b4 X( H) p8 n
let local 0% ?* Y' U# |4 O  I
while [k <[trade-record-one-len] of myself]
# M* H) O" f2 H2 M7 ][- x8 y2 m4 c- B, k# a2 g* r
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
4 o/ r$ o2 b8 h3 uset k (k + 1)
$ Q2 d9 t" y4 k! z0 P]
: ?/ L9 z4 @' k! I( r9 U* k; Lset [local-reputation] of myself (local)
/ F6 }* Z) O1 x. K: {" b" iend
8 v2 s& v! h9 [: G5 G  J5 o4 f0 m8 r* F  v  K- S) ?  G7 h
to update-neighbor-total6 d! u4 _2 I: x+ e3 P

6 B. m" ?+ ^! F0 m: z% F/ i4 Uif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]2 z. O9 `- f. l. x' o3 O* L

/ r! j  q5 e% L: K5 ~7 W% s% k
3 s: n' k$ e7 V+ S; f" s
end
$ [4 c$ r) A8 M3 @. E1 H
3 f' F0 M  ^+ Y7 C2 Hto update-credibility-ijl
6 n) V0 r2 L* m, @. P  T4 c8 N* S- h2 y, y+ ^, B+ {
;;
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。# Z( P& T( W/ H' k, g# _9 t" F8 u6 D
let l 0& S6 P/ {" e; n5 a9 k2 G5 g' k
while[ l < people ]
$ O8 D! ]) T- {! x) |) k# N/ u" a+ Q;;
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7 P4 s9 R9 Y/ O
[& i8 \6 f6 e- d
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
( A# E4 ?/ \* U3 }! t5 l) d9 o" Tif (trade-record-one-j-l-len > 3)
( Q8 ]# z1 M  V- a6 d[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
1 _9 q" f2 L7 k- M1 L2 \/ Elet i 3; \# M& W9 w& s9 W+ C) [) I
let sum-time 0
1 Z9 C9 P* P) Qwhile[i < trade-record-one-len]  _. P1 q/ F  T! G3 a
[. Q$ ]2 n/ V3 a; n
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )$ U" n2 d1 k. m$ O9 I- g
set i7 R6 I  d, f  W9 X6 C. B+ y
( i + 1)

& J5 ]( r# ?9 V: J, o; _! f; Y$ i]
2 k! L0 H* k, i3 }6 Ilet credibility-i-j-l 03 }4 ~7 `8 ^, A# Y2 a1 |
;;i
评价(jjl的评价)0 n/ ?/ v( \  T, r
let j 3
4 d9 ^5 m/ z/ ?, o/ Dlet k 4
+ T- L* Y% H" H& y# ~2 T+ ^) @while[j < trade-record-one-len]. x9 C+ p0 ?* y  f6 S' E6 b' S, D
[
& M( o% {- v& j2 z2 K3 Lwhile [((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 u7 R/ M, C. z# O9 O0 r
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)1 W3 c1 `( h- [' x# v' u
set j' O/ w6 ], \+ R) |5 y( s, \
( j + 1)
" X$ w& r- D7 l
]
! j' n$ h( z' u+ A% R; @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 ))
2 S) U* K# w2 W! ~9 I/ r. P' C6 C6 @2 v7 W, v0 g- ~+ E! H
: \$ U6 D* h, s$ h+ q& g
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
% Q1 Q; w8 d- |9 A$ [;;
及时更新il的评价质量的评价
/ P' i9 H: X9 N( B, I" Kset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]' R7 f/ v8 g" f8 w2 T
set l (l + 1)
  S$ u8 Q% i* y3 O4 G% Q]
- W5 b8 f% R! e3 {' d$ t. rend
- u8 h5 `6 c4 q1 f' d: Q7 S
( {' C3 d; c" Q  q% E+ cto update-credibility-list7 F! b4 V8 v# t3 d' H% b7 N' |
let i 0
6 ~# [. Y7 Y+ C6 r+ @& d4 h# P: mwhile[i < people]
1 D: K$ _8 Y; a& N5 K  _[
6 f+ [# H/ o( U/ {let j 0. O9 S2 ~+ F$ `9 @* ]
let note 0
! ?! W0 s# u, plet k 0) |; c! O7 d9 C7 [0 [# G9 x
;;
计作出过评价的邻居节点的数目- M8 t" {0 u! n0 \9 a+ z) O7 z4 X
while[j < people]
8 K! E7 \6 n0 E. s$ L[
3 B+ k3 n2 U9 n. F" M- Tif (item j( [credibility] of turtle (i + 1)) != -1)6 ?4 w4 b! g0 w% @
;;
判断是否给本turtle的评价质量做出过评价的节点2 }7 w% f+ O+ x7 x
[set note (note + item j ([credibility]of turtle (i + 1)))# `2 C/ i8 j& X4 ]
;;*(exp (-(people - 2)))/(people - 2))]
! n: `# y1 k2 ?" r0 S
set k (k + 1)* P. i, [0 u2 Y* O
]
; s6 |4 Q8 {( m' L6 a% m# xset j (j + 1)* t' i7 U( c) t: p: h
]
) i9 I7 T) ^& b* c/ Y3 }. |6 v; Jset note (note *(exp (- (1 / k)))/ k)
! Q* L: @' D7 Qset credibility-list (replace-item i credibility-list note)* Q: p/ |9 T) Q; _; L
set i (i + 1)/ P: I) g0 R. u
]) @4 Q( f2 g# F2 R9 X
end) R# o# k1 A; ~1 U( l

4 A4 g% `% Z) G) B5 t% r1 d9 a, n7 hto update-global-reputation-list
' W, X3 [4 v% n7 t4 E. T1 @let j 0, w$ P) E) ?! ^8 c% K6 a- D' d
while[j < people], j" U# h6 S2 h% D, b  Y
[& Y! s' }- w& w( P
let new 0
& F7 v1 G8 b; c6 G, p: }$ D, d7 ?3 Y! b;;
暂存新的一个全局声誉* G! |( e" ]3 {
let i 0
3 B4 K3 b: Y+ [' Q7 Tlet sum-money 0
; w& x  T7 V* c( |let credibility-money 0; o# L( V4 r( ?2 l
while [i < people]
$ D% q5 u+ b3 H- G+ g! j[
  g$ L6 T4 `7 T1 ?% {6 L. ?set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
4 ^* T' U( l1 i$ s9 Jset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
) u. ?- F9 U& m! Hset i (i + 1)
9 `% @* X0 n% t5 R]7 S3 G7 x7 @0 r% _$ l; `% S4 E
let k 0
( W, C$ N; j2 k! a4 d8 W. D& llet new1 0/ ]. c7 }. x6 b  ]8 s+ z3 f0 C/ {
while [k < people]
4 `( Q+ Z& l/ q  S6 W; W[! q" U( F9 Z  Y, w7 ~0 ?
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)8 f" {: G/ v% O0 N4 y; y
set k (k + 1)
0 o& t% J/ X# N3 V; Y* G$ B' x]
+ r  w$ j5 o, _. J9 Y9 q# W9 S- R5 Xset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
; ?5 S5 `) b; F6 A( B0 v5 rset global-reputation-list (replace-item j global-reputation-list new)9 `3 \, U% c7 H# E4 S' _
set j (j + 1)
# w  H4 }6 u2 l; ^1 l]
! q1 a6 E! `" H: T: Uend
) b) Z+ x' \. S2 G5 W/ t& k  D; L- R8 Z
, Y3 S! n0 w" z" }) |

. [9 i% N1 \" Zto get-color
3 e5 E$ G& _, [* S( y% q. y0 m/ o. `
8 v$ L5 a* |+ T) m4 G+ Iset color blue
6 A8 d1 D6 f; o! d% s  ]5 @
end2 \0 @- \. a2 h' N# A; q" v. G

3 ~; @4 B- \* f% hto poll-class( F6 Y1 _3 X' m8 {$ |" c& ?" {
end
2 M* Q& Z. u& \2 j. W4 J$ S  s
( e# g) Z* M& k4 x  g  x5 d8 T+ j5 r  `to setup-plot1+ }" v( e  s9 b6 S7 M

7 f3 H$ ~( X9 \7 Fset-current-plot "Trends-of-Local-reputation"
# X% c2 Z! X8 Q) e/ e* s  X- A

0 W# N% G7 E$ bset-plot-x-range 0 xmax
7 k5 G3 b* P* j/ x" L6 Q

' F# h: K* X. N) Z& |. |set-plot-y-range 0.0 ymax
2 S7 q3 g6 J0 i( v. u
end
7 r8 |7 j$ p6 U4 ^% F
$ l% T  N3 r# d& H, ]& `to setup-plot2' J7 A1 k3 R* C
( Q: |2 u- U) g, |" a
set-current-plot "Trends-of-global-reputation"
2 J! {; e8 Y, F9 y3 A. i

* h1 X* J0 |1 c& Aset-plot-x-range 0 xmax
% E. v5 v2 \0 C1 r: o9 U# u0 A' X
& A3 l9 F4 V/ T& Q+ f& {! M3 j
set-plot-y-range 0.0 ymax
9 H" I; i8 j8 a, Z
end
8 e$ z, \, ^9 U& g, }1 F% i
  ^4 S5 ?/ \& \8 [to setup-plot39 r1 s  a& v+ [) W7 s
, m; t8 q3 I) a4 f" O( J+ |( T* g. p
set-current-plot "Trends-of-credibility"

2 _) ~& R( F# b5 Q7 |
) \. g# v8 S) Y7 Tset-plot-x-range 0 xmax
9 X# q4 ]' @) D1 v7 }+ t$ Z
+ g5 x1 z$ v) a
set-plot-y-range 0.0 ymax
5 h/ j; [( o2 X
end& U( a5 z* o& p* H/ i. ]. [3 [7 [
( ?0 ]7 y. i. i& w  W0 v9 C
to do-plots
/ t7 G6 t' y$ ^0 a: |# sset-current-plot "Trends-of-Local-reputation", f. o& z% ^( p2 U4 v
set-current-plot-pen "Honest service"
, d0 h6 V, A" y  vend% v+ R8 w8 d. w4 r. q. e! U

4 k8 `0 @* x; H$ a+ V0 r3 o6 v[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
* ]- ?! h( M7 U% n) e: y- H# I' n0 L3 K% S  d0 G
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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