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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:
) B! m7 ^0 h7 bto do-business
4 u/ p( q9 q3 o- _3 y3 Q! ? rt random 360
; @% l7 k4 a- a* B fd 1& D3 @8 J" I+ ]" y
ifelse(other turtles-here != nobody)[
& t) u5 A: W$ X$ F# ~. Q: r   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.
2 t5 O& c% G3 F; [8 u; B! u   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
' p% `$ @0 i' X) c   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
; i# A2 `# B( C! h( j: S   set [trade-record-one-len] of self length [trade-record-one] of self: ]+ l7 T! V) Q: \
   set trade-record-current( list (timer) (random money-upper-limit))
7 [6 Y! u3 Y% h) y* Y. D6 i% P6 _( F
7 g& a( }" v1 o1 I: _问题的提示如下:% I7 S$ ]; w+ T* Z* Z

7 z+ Y' ?/ W- ^; B! [error while turtle 50 running OF in procedure DO-BUSINESS
, i6 y/ p6 c) Y+ @$ U; Y! U! f  called by procedure GO* _4 i( f7 u$ `$ {6 o
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
2 s) d2 |, }4 j" z# ?2 J
(halted running of go)6 m3 n: p' I+ m4 E  o
- b5 `7 ?% ]8 J/ h1 l8 c) x
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~~
; {, E$ m1 G2 o8 T3 |: E( 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! U+ K: h2 Z( `8 c+ ?4 a8 N
globals[
6 [! w5 ^8 Q5 J; i1 j! P, {xmax
, }, ^' Y9 a! K$ b0 w( B" mymax" ^! g0 z/ }% K- ~
global-reputation-list) f( A+ y+ e: Y5 d0 D, f5 D

# \8 N  F" M, K& c% h, t: m;;
每一个turtle的全局声誉都存在此LIST
- z& W( w6 Z0 N) ~) W$ gcredibility-list
* E3 x& u. F& ]' g6 _;;
每一个turtle的评价可信度
  i& A3 A: S9 Ghonest-service9 `4 X5 _: E4 c' [+ m
unhonest-service; q. s) \+ @" ^6 u2 _
oscillation
; p6 {0 p/ B# \) Vrand-dynamic
( m( t  E% F# y' C  e]
% i0 a7 z4 X# R0 i. W8 P7 z& }8 ]3 F. E) @9 ]
turtles-own[
2 X4 D' n% l0 s* B# s) ]- _4 Atrade-record-all
1 r, l( I2 ?5 `# @9 {. J0 G  p8 R;;a list of lists,
trade-record-one组成
, J" z3 f9 s1 A' g% Xtrade-record-one
+ m$ Y& Y" v) 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
( D  R* s7 P0 e8 ?
& K: C  |) r3 R1 f  b9 V4 [' J;;[
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]]3 \8 G# [% a& s' N6 G
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]
( c. ?6 g# a2 u7 ^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  x9 T- I; R  y- m$ `
neighbor-total
2 `! u( b; [( S+ c9 m- o;;
记录该turtle的邻居节点的数目+ L. w4 |! k# C0 |$ z
trade-time$ L& b0 `. B3 s* b
;;
当前发生交易的turtle的交易时间
/ D+ A$ Z/ \! {; e/ u5 d4 Dappraise-give
- y+ F8 l2 {& _! M0 X/ t1 U6 S;;
当前发生交易时给出的评价
* f5 b2 g! O( m- Q9 [0 \+ @appraise-receive* P. ?6 e0 {% q2 Y) h/ E; h
;;
当前发生交易时收到的评价% \8 @. J  H% o# r0 o6 h1 h
appraise-time$ H! v* a' u; z: W
;;
当前发生交易时的评价时间* F* D* A, \$ i) Z
local-reputation-now;;此次交易后相对于对方turtle的局部声誉- H& ~; i5 P& \9 r: L( `9 S
trade-times-total
7 t5 j  P; u( G! l* f7 |;;
与当前turtle的交易总次数& `2 D/ I0 I% p- r7 J
trade-money-total
- z3 C- Q  ], W7 M6 x# d' k;;
与当前turtle的交易总金额! E+ M% `; j7 ]" n" ~
local-reputation
3 c5 C, y/ ~+ Y' G1 Zglobal-reputation4 n! N: X% c' d. f
credibility
& O+ z4 [: h9 |) I8 ]( G- ^;;
评价可信度,每次交易后都需要更新" ]( V9 l' t4 Y; M# N
credibility-all; g( h' q& o' o
;;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
# `& c& r) {2 r+ X; T6 H
; d/ x1 _7 G$ |" u;;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; J. w  |8 r1 K2 q( v# {) D
credibility-one+ ]" T% \' i% T7 Y& Z9 r. h" P, _
;;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 w" \" `) H1 l( l' eglobal-proportion3 x6 p) z- Q! ?, @% e
customer
9 C& S4 @( O4 `1 d4 Y4 d8 W0 H8 Ncustomer-no5 w1 U4 @, @% e
trust-ok
6 I0 d+ v- T+ D! S" e. `. ]. h/ V+ T! qtrade-record-one-len;;trade-record-one的长度
9 x# k! O0 F1 x# l5 D5 y]
" P9 U, h6 `, e0 }( d, A% z: C+ V, A6 n1 z4 P/ W* F1 j' a% P
;;setup procedure
$ L9 s0 M3 R4 }0 r" R+ J2 H* d% F" L0 P. ~, x4 O' Q
to setup
$ z" B# U/ c3 S7 L/ r4 B
+ i- m, @; `3 G' r! C) Eca

4 F( i6 h/ [  L( I  J
1 Y* ?! M: [+ S" Y% G! y% ]initialize-settings

: X3 U1 z* U1 k, ]
+ ]9 v7 B, S% J0 Z- ?+ _crt people [setup-turtles]

$ x$ `2 H* {% C+ ~! Y. B& h3 {
2 N' h0 V- j" Jreset-timer

3 L- G8 Q! |. U
/ X( w* ~' M4 x; K+ n) ?0 w8 L: g$ Vpoll-class
% [: |" d) {: ^/ r, k% y

' d. B, p8 ~  j* [setup-plots
( K/ f1 i2 x% b* Q

- s  M/ ]/ ^$ [6 u5 I1 j6 Sdo-plots
  w" K+ d: v2 Q8 `* z! w& n
end) O+ b& Q* k7 @) Y
; f9 X5 M( Q% J4 S! f6 z
to initialize-settings
. u+ X& ~( Z( y9 b8 l5 m
: h. D6 w5 I, s$ m( Fset global-reputation-list []

3 q) E, C1 K: k# ~& m0 _+ W, a, z( Q  i( [# A! V
set credibility-list n-values people [0.5]
: t8 ~) B# O3 H5 j+ J" M
3 D" k) R% a4 Y, e! x
set honest-service 0

4 O9 l9 F8 S% R7 x! f0 W" P
" D2 ]/ K% b, I3 Y& H! Vset unhonest-service 0
! }8 b. t! l7 A$ w
& Z" a' g$ u% U
set oscillation 0
' n/ y+ X* D! m6 ~0 A$ E
) e( u, |" ~1 b- X$ x
set rand-dynamic 0

8 f: K5 r4 \& [8 ?5 ^" K( Oend  W* g" a; }: s- |! t: p

1 ?7 \  J& d0 S: @4 B' R) t% ^to setup-turtles
1 R4 C6 U) z9 T3 k+ k4 fset shape "person"
; a+ E* E. A0 b: i0 G6 tsetxy random-xcor random-ycor/ w$ j* P3 |8 o' R( N
set trade-record-one []
' M# t8 O5 ?' [) X' `9 B4 L0 }1 i
8 p, Q4 k; g8 ~8 V3 l" z7 \  C' W
set trade-record-all n-values people [(list (? + 1) 0 0)]   y7 h( l7 ~9 o
$ B# O5 N6 g$ w) E
set trade-record-current []
: L/ l8 j7 o2 @+ Kset credibility-receive []
% I9 s! V, \( A6 m8 ~" {9 dset local-reputation 0.5" P% f/ w+ `9 `- ~
set neighbor-total 0
' _8 z! a+ Q- V% \8 u  q$ g% O1 Hset trade-times-total 05 c# P$ V! _' J" B' q4 s0 l
set trade-money-total 0
0 o1 i( x0 t+ a2 G: q' r" ]set customer nobody
# ^. l; A2 a" c% @set credibility-all n-values people [creat-credibility]- i% R$ h, C, R- z/ r) |
set credibility n-values people [-1]% d: S+ V  r& }, v; w0 ~! i9 }
get-color
7 a3 i; l# _" P
; e! p8 }1 x7 l4 W* ]; e: n
end
2 B, Z; D& D8 u/ e5 H3 b% Q( m+ E8 Q3 z" y; [
to-report creat-credibility. h" S/ m0 c$ ~
report n-values people [0.5]
( L4 ^! i$ u0 J4 ]. f7 _: w, \end* ~1 c* m8 ~& P5 ?# ^1 H( s
0 }6 m. c2 v! E1 t1 h
to setup-plots
, m7 L- {# i2 N3 i( y- q
& x0 ?8 l2 e& g% lset xmax 30
5 f8 r# U/ c2 B8 b: S. p# M4 n

- ~. \4 a+ R' J* B& {: |set ymax 1.0
- b# @" q6 j$ a2 R# T
+ j1 ^/ n9 b1 _) [9 C- A6 g* Y$ L* r  }
clear-all-plots

9 }. p, A) C( c0 K3 N* J8 L$ a2 u& h" T3 v7 p* V, l, K
setup-plot1

" C" i/ m; P6 e# L/ A6 m, F+ I# J
setup-plot2

0 B, \$ A2 z3 d& `7 W$ r6 L) x% N- K+ W* E) H' g4 n
setup-plot3

; l$ c! C4 w! ]1 zend$ C( ~7 K" {6 v- b9 K  G# U+ \

% H" y5 E' R5 k# J;;run time procedures
7 L3 J* W, _- i& m" x& J. X/ c3 t3 p1 A# v
to go
! I8 E+ q6 \$ H6 \9 b
- S# v1 P" |0 U- q; Y$ [ask turtles [do-business]

2 ]9 a. p, ~5 S% kend
4 L" E  H$ k# S# F  U+ |) B: d8 P
& B% _. ?1 u& a+ `to do-business ; b$ i/ h1 T3 u/ K8 z; V& _

, t9 }. P+ _: Z; Z, B* q( ?, V
- h) B  X# W: t1 B. ]- ^( crt random 360
# S: }5 U  c) p. W* s

$ P$ z: W) ]0 r0 z" I' a% yfd 1
6 i/ }/ Z( R* @# @8 n6 W

' X& L. W$ Y6 F- e! ]7 y& ?, Nifelse(other turtles-here != nobody)[
9 K9 k0 v# h8 l2 |, I- n1 g
. [8 \1 Y% @# f9 T4 P
set customer one-of other turtles-here

5 ~$ h# j/ W3 V7 [. J' j; E' h
( F* i. L! ~0 r+ R' i& z2 |;; set [customer] of customer myself

/ Z; M8 B! A# ~' ~3 j
, \3 J% w  j: ]  G3 u5 D6 p  Vset [trade-record-one] of self item (([who] of customer) - 1)# b! Z" {& m7 y$ b. W7 t
[trade-record-all]of self; }- z7 \) X1 c
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

/ g1 G( N  _, U2 s7 x- a- F7 w/ N  E$ x: k; ^2 Z% y$ L, s
set [trade-record-one] of customer item (([who] of self) - 1)
, d1 L) h: [  [$ z. W4 M[trade-record-all]of customer

; w+ ~: b. r0 X" U2 B1 X5 Q( I6 e& t! ~; |& G- @7 x- Z* G7 e: G7 p2 K* @
set [trade-record-one-len] of self length [trade-record-one] of self
- x: ~( }5 Q1 b- k. w

; u" a3 s) j- K3 aset trade-record-current( list (timer) (random money-upper-limit))

4 {2 U, k: `' }6 Y7 n
* W( P; i" W) u; L1 q2 w- _. jask self [do-trust]
4 s5 ^& {7 O7 H9 v;;
先求ij的信任度; i7 h$ C& f: g3 W7 `$ U
2 ~" ^' z9 ?- T; B: A, j9 M( g' @
if ([trust-ok] of self)- _: Q; U% f9 j: y# x0 |
;;
根据ij的信任度来决定是否与j进行交易[
, ~3 L9 d7 J( l! y! [ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself& m  ]1 _+ e# P# H" [$ T" M0 r

% b6 B( L9 {  D$ ^[

6 x% S3 P( z" M! @. ?: N( N& Z% n$ v( G, I. x: Y
do-trade
4 X5 ]4 M+ X' B6 |8 \0 w% v5 J+ y

& O& q# r& k; E7 }update-credibility-ijl
3 D& P6 Q* r: ?5 N  [, e
4 i5 J% u  T5 [" I! M! E% b! X* t+ b
update-credibility-list3 w: t9 `% o$ O: W) \! Q
5 ~' Q1 d2 _  q" a+ w* o! A# ]

: v& N( @. [2 X7 A) kupdate-global-reputation-list
" p1 x$ _) |; F% A# L
* w) |! n- b: ^+ \3 K, ~
poll-class

" E+ V. G3 S) z$ @/ {% \' s% Y$ k
, D. A4 h9 K2 I7 zget-color
4 P( G, T( p) Q1 V+ r/ P* {6 q3 r
/ V. c3 {+ ?. B0 E& z: Y
]]
0 {: P; M3 X% s# w$ U* p6 `3 M: q# B) H; }
;;
如果所得的信任度满足条件,则进行交易6 n8 _. p; ^- e
& y! T. O5 u7 O+ q( p( _
[

% A: I5 F8 @; T# U! d  n7 x0 I
! D$ O0 _( k8 H9 k5 `# A! k. X: Art random 360
, B% ^" S; w1 R( e7 I, ^. N
1 N! g, K$ h6 d, `, `
fd 1

6 E2 k' e+ U2 [# |! @3 B) z0 n; i* y3 V
]
: ]% P- X6 |; |9 L2 p3 P
+ ?9 Q7 p( |: d+ F! {) g* ^
end
$ n( Y( e: ]1 \. i% ?/ O$ d
- N) ?# P7 z. [! m/ v0 x# d# h/ \
to do-trust ' |- M: C4 `; S  g- A
set trust-ok False
8 v' N3 L, k" [5 K0 D( I
, c( z% f2 g2 I3 a  B

. {/ P2 g5 b5 I- M4 m# ?8 ylet max-trade-times 03 V2 N6 W& H3 Q2 l
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
9 e# d, W' {# R+ N2 Olet max-trade-money 0* ?/ ~$ U/ M8 P. G! j
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]$ c0 N0 U9 ~6 f! ^  L) A
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))5 w8 B" w# l. C3 D% [: @" y! [

3 J5 O; r# S# z1 S
2 F% K) J  `' s7 J( p9 O
get-global-proportion
+ e+ s9 x. N. `3 d3 w9 o) |let trust-value0 ~9 p' X/ [4 n
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)
# C4 t. |- H! Y% S2 O7 @* \+ o
if(trust-value > trade-trust-value)
$ N& Z- x) a" a[set trust-ok true]' L8 r3 t2 O" F# N" t
end
) b8 H" l7 V+ N- O. R; o
& i% B( P- i$ f& Z( E3 |/ J  uto get-global-proportion$ O# }; h: V5 y; u% L- a6 _' I- \
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
  E/ H0 p7 G- ?8 b[set global-proportion 0]( @  G* l( C0 f, M4 g2 x
[let i 0
9 S: h; n4 A% c" q# ?: Y  _let sum-money 0
* _2 m: J& C2 T$ I6 j5 [5 G- nwhile[ i < people]# U" k7 q1 Q! u- l$ _9 s
[
! j4 T* j6 U. y0 g0 \if( length (item i
: o# Q( P; ~1 b2 R7 T7 C0 b+ M9 _[trade-record-all] of customer) > 3 )
9 ?2 W- d. I4 y$ E1 @# g% j1 m
[
- c4 Q4 q. \6 Fset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
( r, H. V- ?5 L% a$ Y. M4 ?( ?8 g]- C8 C6 s; t$ p! d: A$ f5 e6 D- S
]
3 i; m, l% Y6 q) l/ Klet j 0# g$ d+ @+ n: c  I/ q" v
let note 0
. s% |' f; a# @" U$ kwhile[ j < people]
2 t* c6 ^, w" K. ^8 y7 }[* B& o0 F% m7 t" Y7 W3 d
if( length (item i2 _! j: b* S$ f
[trade-record-all] of customer) > 3 )

5 e) }# ?6 F3 j* H0 E[
! c* y( O8 w' |4 g7 Rifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
/ p; e; y% s( K4 K" _: i* o3 A) Z[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
/ _% Y  u+ v3 C9 _- p! ^* T7 q[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]! [7 K2 k) k! F( {5 I! G4 p  C) W7 x
]
" I3 p' H8 |) C  _5 t2 `! J, m]
- J+ \  H' C: a1 z: ?set global-proportion note
; y/ F* p9 E6 |9 n2 x& W( J+ k]
- q. t# J8 D" _9 r' {1 M2 ~$ U- yend
3 {, y& e& T, ~3 G6 @# U1 `) C- x$ C7 r3 n* S
to do-trade
7 b* i, I  E/ `( _. P;;
这个过程实际上是给双方作出评价的过程7 i+ O+ x" S3 l, F" h( i. m
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价* E) k  |* }' @2 S; W2 z, K
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价+ R( o8 w; a6 N2 f/ l( o- [* m
set trade-record-current lput(timer) trade-record-current2 D/ [( S0 c1 F3 V6 [
;;
评价时间
0 s  Z1 c1 P2 p+ W+ O$ A9 }ask myself [% D& J7 P! P' z+ }7 n" s
update-local-reputation( a* k- e$ V7 }: i0 O
set trade-record-current lput([local-reputation] of myself) trade-record-current
3 g  N* ~6 M8 D; P7 l]5 p! E" i1 q: x0 `
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 j7 B% r& I8 v$ u3 V& A% J. Z
;;
将此次交易的记录加入到trade-record-one3 p) }. J) W. V: ]# n
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
- i* K+ A2 Z& K! A6 D7 Zlet note (item 2 trade-record-current )
4 a9 C; r8 a0 n% j( d6 Hset trade-record-current
3 x: C0 G6 y7 [5 v  q" {(replace-item 2 trade-record-current (item 3 trade-record-current))

2 A' b! @  U! A% Pset trade-record-current
( ]1 ?, X9 f8 A- f; [" c(replace-item 3 trade-record-current note): H( T6 {2 B- T3 F8 u4 B
* k& R: A+ H' v2 t. R% @- W/ G
( Y0 N8 u2 z3 N+ ]3 a/ n
ask customer [% B% b3 y" ^8 }) n2 h) F* Q' d
update-local-reputation
* M8 X8 Z: e# o0 {/ `) m1 A. D2 G6 qset trade-record-current9 e( l' j7 M) j3 v: s
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

6 k/ p" \( ], O7 W. M* D]
% a) o" o; v/ I! X+ G
3 [! m3 v* [+ {8 o/ S8 D  D% @8 D, N7 W% O
) i. b5 e0 A- `( F
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer, N+ ]$ W# z" o0 c5 j
! c& n4 V% d/ I1 V5 m2 N' b
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))& m9 _1 E2 {% w( K0 o  r6 S
;;
将此次交易的记录加入到customertrade-record-all
( S+ W, T' S6 }" |+ z8 bend& Y# w3 [, p3 ~* h" a9 e) l
0 o9 y! I& a2 V# G
to update-local-reputation6 ^! z) d$ h' V+ s: M+ U$ G
set [trade-record-one-len] of myself length [trade-record-one] of myself
8 |' |8 }, J/ \6 X, N* F* s
' o6 I0 a9 ?+ f; S1 r4 _2 ~' Y8 _8 B0 @
;;if [trade-record-one-len] of myself > 3
8 ]5 s" U; P, S2 ?
update-neighbor-total% Y7 }( e9 b  ^# u
;;
更新邻居节点的数目,在此进行! r% s% j. F6 ?8 J: C' F
let i 3
& z& o& F/ n! Y4 [$ L; r) klet sum-time 0
& t. j. k0 w" V) \/ Y, F8 h. K9 Vwhile[i < [trade-record-one-len] of myself]- B9 R: K. o0 ~# G4 r
[
! @! H& w3 o$ l  ^! Rset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )" A2 }8 F0 h9 ^0 e
set i8 j/ b# U8 N# ?  k
( i + 1)

4 V  |/ I9 ^' a: N" c]
5 m. A- l$ Q# X7 @5 ^# D: Wlet j 3
% Y  Q* f7 @& o3 w4 i7 \let sum-money 0% Q. ]3 k+ N! r
while[j < [trade-record-one-len] of myself]
, v4 d) U) x+ J3 ?+ U[
$ {- k4 `8 L6 Y8 t' K: L1 h6 ^set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)" J6 y/ b: Z3 D& g! V. b! K& X
set j
% _3 n0 A2 E& k( j + 1)
7 K; A; ~, A+ E% {) U* I
]/ [# D) c! P- Q9 U( F* o
let k 3
: k5 |1 ?! p! K4 j9 S" Tlet power 0
" p$ N# M$ k' {9 S8 elet local 0
) \  P, ]) f# d' `* [- |while [k <[trade-record-one-len] of myself]$ x. {6 E$ U3 Y
[
& b8 J! x) Y2 u9 b! [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) 5 d# B: o, ^4 j0 {# U
set k (k + 1); O$ }! Y# E* ]
]* ~# h6 m. Y2 ~4 s7 Q) i
set [local-reputation] of myself (local)
2 d' W4 R' e( n$ R* z2 fend3 @3 i7 k  H* N
6 z  a# f$ i1 y' Z; q
to update-neighbor-total, J' d: S( M1 E4 A% d
+ S: X$ L1 x) A1 [- ~7 A
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
% b6 \1 ^5 H6 ?) K$ d
% @! [! z- f' x: b' i

8 R# c* G$ \# j8 J* c; Y+ `end# r* D1 x; I* [% t3 Q+ `7 \

5 M0 K  ~$ K2 g, h- e3 n  |to update-credibility-ijl
. h0 {/ s, l+ B; |
$ K/ E) v3 I1 E' ]$ k$ ];;
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。
# e8 Y' V7 G6 W8 R- Ylet l 0
  e" _( j! R) N5 D% m! ~while[ l < people ]" N! }3 T3 ^  G$ s) f9 h9 z3 N
;;
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
8 O7 j/ L' l5 Y5 ?- k[
* C  Y# r0 l* F6 z- z) U3 Blet trade-record-one-j-l-len length item l ([trade-record-all] of customer)" [  ^' c1 f( ~( c  l" M- e3 K
if (trade-record-one-j-l-len > 3)
, X: {  Y6 y5 X2 {1 U- j( N[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( j! u+ ^" \, E; K- `
let i 3
- S% k  S  B$ z: a4 G- P: elet sum-time 0
. _7 k* B, ^& z  l1 `0 Dwhile[i < trade-record-one-len]( h" J) R9 m3 g+ K
[; |* v" i  L0 f$ C
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: `! z6 b) s' c" B1 Mset i
; v% m  s- k- T5 F0 G1 L; W' R  ]9 ?( i + 1)

* Y. O7 D; P/ S]
% }4 a& [; y% n8 ^# Jlet credibility-i-j-l 0
  B: v9 g8 H, l7 Q; g;;i
评价(jjl的评价), T& P9 Q4 ~5 f& l" \  W0 n! [, B% r
let j 3( @  H5 V% W3 L; D9 f
let k 4. x% R% [& j  g8 d
while[j < trade-record-one-len]
# n  F4 J0 H! v% [! k* b( t[
: R7 {1 w; \7 \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
0 a+ A2 R3 }) O: I8 \" Cset 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)  S! h3 D& T2 C% L  B% n
set j( i, m7 m4 K, W
( j + 1)
1 q3 R9 t, `. y( A  a4 x+ L
]
, v" ~# ?7 u6 o4 q4 v9 kset [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 ))# k* J7 K7 j* g  f
& y% e6 G$ r& |
* G9 b8 n% A1 t+ ^" \; L
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ n3 n+ V8 F2 Z9 X
;;
及时更新il的评价质量的评价1 T0 w; e1 k3 K6 l
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]* B( ~' V9 H( X7 n. k
set l (l + 1)1 C8 C) u9 U. M3 |$ O! p
]/ x0 Q0 {1 ]6 U8 A
end
$ t( E. a" r3 f
7 s- \- P7 m2 i8 `% `1 |* j  |to update-credibility-list
2 w* |/ y- K* Q4 u2 }  F" D  X7 Ulet i 03 x8 s# q$ S& T" M6 y. C
while[i < people]
. T8 f' z) p% _4 V# L/ R[
; x* S; D: _4 _+ f/ [let j 0
  {- S$ \+ z: {. e& j  ^let note 0
, Z% F; w6 G4 d. |let k 0
% U7 W3 O  `5 A4 d& l: c- H. g;;
计作出过评价的邻居节点的数目( x" S' F  t, w: ~% o7 }8 _7 W
while[j < people]
. K0 w8 i- G# m' x+ I, ]6 k" p3 l# K2 N[
8 D& r( t3 f- a0 ~2 }7 Lif (item j( [credibility] of turtle (i + 1)) != -1)
5 @' N8 u1 q0 r2 O, G$ r) n+ b;;
判断是否给本turtle的评价质量做出过评价的节点5 P5 S* |% j8 Z( \
[set note (note + item j ([credibility]of turtle (i + 1)))
- [* Z  ~9 w4 c! ~: d" K;;*(exp (-(people - 2)))/(people - 2))]
9 B1 ^* d0 q% Z5 S! v) d
set k (k + 1)1 ~) g7 C3 `4 Z+ g1 I! a# n
]4 Y! y3 N8 }+ B+ H
set j (j + 1)0 x* j& A) |3 B  i
]
( x2 u8 m+ y- x* d* x0 dset note (note *(exp (- (1 / k)))/ k), |7 [! L- g  p2 J$ r$ P9 _
set credibility-list (replace-item i credibility-list note)$ g  ~0 H& o' c6 ^6 D) e1 Y/ ?& [3 P! M
set i (i + 1)
6 k2 e4 y* }9 O. _" Q]8 A2 O( |  _. E0 p
end( B2 Z/ R, q8 O; d

: }1 K7 z" \. I- T8 Z7 nto update-global-reputation-list6 d% g# X4 E# H! x, w6 w3 E/ o
let j 0
, B* y$ O. x5 @; V2 Y' Qwhile[j < people]
# R* Q1 F% a9 Q' {+ b: b; L% i1 r[* G4 |0 B! X/ X
let new 0
; u1 L4 T9 O7 J5 e' b: g# b& t;;
暂存新的一个全局声誉
, z* `- n% F; ]( L! I% K) ?7 hlet i 04 K- n& a# r9 U; F
let sum-money 0; @# p" R. L# c- g1 o( x7 M3 H6 \
let credibility-money 0
, c9 @: n" E  F: r( ]0 ewhile [i < people]
# T) k6 ~  q9 L$ m. G: n) A* [. p[  y5 ?! I+ l- X5 t7 X* ?' ]
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 h; k' X! P: @: \# i1 ~+ ~' K4 i7 qset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- n9 y( V% _: k: g4 u8 dset i (i + 1)0 k6 B' ~- r/ M" b" R+ u
]* G5 _4 X. S, Y& _" I) W) @
let k 0
$ o. O6 j" F7 ^. v( l7 i# \* ^let new1 0
. l$ d* w; G. E5 Gwhile [k < people]
  a* ]9 }  z' G8 M[
. }3 v1 R: B4 fset 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)
# w8 D6 C3 B0 B% p8 g/ Pset k (k + 1)
* v9 M+ p0 d# q6 K. S! R& ~! ^]" U! v+ {+ d7 J% |' v! S. I
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 7 L" N4 j9 k7 Q# r
set global-reputation-list (replace-item j global-reputation-list new)
0 q  w% U5 b9 k  H9 v8 Oset j (j + 1)
# `5 t4 P8 ]$ {- R3 L* C]* a, J3 |/ ~$ W* d2 ~
end! {  j. {' _% g( ~4 s0 \
/ @! x" }, D2 E( g- D% d; ?
. P* A/ i  i+ g& R
* x0 t* u" V. h. X/ h- a
to get-color
) c( N# Y; ]& ?' N6 q/ n& R0 h) o' w- w! D
set color blue

' W& x) Q9 C* [! z% i' A5 S! z- Y5 jend4 X3 ]; |  m: [! q# P8 D
: ~* B2 W. j& Y; S% F4 {- {5 B- C
to poll-class
2 g% ]4 t" U$ j/ `7 f! f7 R* K- nend# `1 Q0 p: r$ I1 G- A, [; H1 B$ D
- ~1 g6 c/ d6 w8 \5 u; T# V% f  o( |
to setup-plot18 G, G( }# E- X+ K

0 z* I$ a' _7 t3 @& u4 j" Bset-current-plot "Trends-of-Local-reputation"
0 J/ x( F9 o* E. U2 p6 h6 l
5 W& C4 q( h: ]
set-plot-x-range 0 xmax
% a! ?1 \# ?2 q- L( a

( z9 Q5 R! Q1 V) Z) _3 ^; O6 k: Wset-plot-y-range 0.0 ymax
* y9 V. T' Z  i) \! T3 I' V1 t3 \
end
9 a& n" \+ [$ v. m5 }. W3 T& \8 u- A2 k, A! _- _
to setup-plot24 a7 v, [9 n9 P" Q
4 [! H! t& w* t; z
set-current-plot "Trends-of-global-reputation"

2 Q8 T- R) F& ?, h  F# \2 X6 ]
& ?9 U4 v2 P9 Qset-plot-x-range 0 xmax
) o( L3 s: K) T1 @) Q; h! }& e

+ H  {" A3 P: U6 t: A- ?7 h& ~set-plot-y-range 0.0 ymax
8 u' z3 f( M* Z3 l- r! _
end+ z4 a: ]0 G/ K; U" H9 f1 o

/ i/ i% r& s% v" }to setup-plot38 z" g" I7 m( T& k

6 v* D6 `  `/ [4 b* ]# Rset-current-plot "Trends-of-credibility"
5 x7 _- t# K1 ~  I8 h
! s: W3 K2 m2 T' ^2 v1 P, T; W0 H* R: H
set-plot-x-range 0 xmax

) d( M% v$ Y3 C0 Q' b/ h$ J% f3 l
, i' I2 Z0 C  T* qset-plot-y-range 0.0 ymax

  A1 g3 L$ U% y* z& L* y9 |end
% {9 i+ U6 ^$ ~" T9 [% i
; p1 k9 Z- j! f3 q) Z3 ~5 Xto do-plots1 V2 A7 g1 Q& I* h* {
set-current-plot "Trends-of-Local-reputation"
/ F# k5 K; T. z+ h, X: cset-current-plot-pen "Honest service"
9 `' ]& J% v, T) ^2 ?7 \5 P2 wend
/ E3 [5 @/ U  M$ N  T' R+ d2 ?9 R1 ]) L& ]+ B9 \
[ 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.
1 W2 o9 ~+ e: B
1 {: j2 B7 s7 p* k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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