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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:
$ G- g  H0 @% N3 V3 h6 G7 nto do-business
" P8 I# v+ P+ I9 e0 H7 h rt random 360
6 {5 B; s, |3 M6 I, a, h" j fd 1% c% G2 g; [7 Z% |) ~
ifelse(other turtles-here != nobody)[: m! b# {' O2 u) J. k
   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.
5 T4 a4 [, \! T6 L& ]& r   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * [5 l- D0 |: H4 _0 I
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer0 |3 J/ _* P! S( H  L/ @* l
   set [trade-record-one-len] of self length [trade-record-one] of self/ {, K& L  o9 @( v8 _
   set trade-record-current( list (timer) (random money-upper-limit))( W3 H# M7 M; |2 ^& g9 A! A( z, G; H

. H% G" p2 [7 u问题的提示如下:
. K, H8 E* p# q
; n( A. ?% N+ t3 N9 nerror while turtle 50 running OF in procedure DO-BUSINESS
* P, u# \& z8 Y  called by procedure GO
( [7 u% M% h5 ]OF expected input to be a turtle agentset or turtle but got NOBODY instead.
( ~  {1 p% V# Q0 X7 H, o% c6 N
(halted running of go)
: p4 V# m9 T4 ]3 p
( k2 w4 J0 F, X( n6 v$ ?. X" r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~~2 {( m( k1 v" o& y$ s* x8 `- w  u* \
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
& V! S9 {$ Q  a6 L% [globals[
9 z9 ~" v' t: Kxmax
% A* \4 w0 w/ x% E( [# Gymax
# s) A/ y2 @+ \- Tglobal-reputation-list( \$ S* Z1 {5 A2 I9 K( C( y* Y
' w9 K8 B& i' L# Q
;;
每一个turtle的全局声誉都存在此LIST& L! B( z7 j5 u4 A
credibility-list
0 ^1 c4 _9 J# P; F" F;;
每一个turtle的评价可信度
8 n- E* g& a: |$ phonest-service
' D2 Q$ d8 U  O0 Xunhonest-service' j1 M7 J$ i* |* F% [" p6 E
oscillation2 s0 E6 Z0 q( Q# Y8 R8 A! U
rand-dynamic
2 h: {8 }3 v7 @4 h; r3 B" y]
* F$ A: u2 O: Q- t/ i0 J& b/ O
$ m+ l* ]' F) ?0 Uturtles-own[
3 G$ T7 l0 o6 X2 h: ftrade-record-all
! @# R) d* s3 \( A" ~7 Y7 `;;a list of lists,
trade-record-one组成9 b( Q% N2 ]. K
trade-record-one  P4 b7 m0 h; e" n
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
" Y5 p6 b$ _4 E! P% i8 A9 T+ S7 [$ X) @. r
;;[
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]]* Y) o% z+ G  z! h. a
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]- ^, D. p2 K% v' G8 R4 ]7 h- x
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
- Y8 a% I% O4 P4 d5 C# F/ [neighbor-total$ C* I! W; s$ t, l8 N/ n
;;
记录该turtle的邻居节点的数目* i+ C  I' }3 B5 G
trade-time9 L/ j' @# _8 p6 C4 d9 ]
;;
当前发生交易的turtle的交易时间* C' B# h5 c3 m9 m5 ]* p. T* w
appraise-give3 h+ M* u+ I  W' D
;;
当前发生交易时给出的评价
* y7 [" s9 t, i8 sappraise-receive; I  q3 X" o! T9 ^( U5 g% u
;;
当前发生交易时收到的评价
9 n. W# U  H( k; K1 P% h7 |appraise-time+ h: T, b7 p1 V8 i' }' k
;;
当前发生交易时的评价时间" L" I2 T0 [  l( ]3 A1 }
local-reputation-now;;此次交易后相对于对方turtle的局部声誉% z  W9 O4 f) x& }7 y% J
trade-times-total
0 Y& [$ {9 r  v& @;;
与当前turtle的交易总次数
- J$ z' }' r& L* m( ytrade-money-total
1 N$ H$ f& D. B;;
与当前turtle的交易总金额/ H6 v) d8 m* b& u6 d* E4 i# D
local-reputation
% ~! ]- ~8 e1 r! a3 h' |7 Q$ d- A  i5 F9 Fglobal-reputation* e. b' p0 X+ t( H6 T& }
credibility
5 R2 g7 Q8 Z7 n1 U: x;;
评价可信度,每次交易后都需要更新/ _8 E1 A3 I5 P2 d
credibility-all
8 ]$ @2 z7 E4 A- s$ X;;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9 `1 a9 G- C+ Y' _
+ O0 W4 W& |9 g+ g
;;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0.50 p; P2 ]  _% K% z
credibility-one
# W+ s6 a1 ^2 z* g;;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people2 m5 r6 q( \" ]
global-proportion
& b1 a2 |  n- \customer& t1 @0 ?1 ], o
customer-no6 b+ z9 @9 |! \
trust-ok7 g+ q. B: F0 k  |$ y# }3 S- y3 A+ p: u4 i
trade-record-one-len;;trade-record-one的长度$ ]! `* O* z1 a$ n4 I
]
* |( ~+ j- `7 C9 ~1 p  F0 N  W, D& \. H% E/ R  M
;;setup procedure" D* D$ u! x5 ]1 h% R( I
+ y+ g& [$ e! X+ u( y5 x7 U% u* F
to setup& f1 o  ~* a  \4 [2 Z! w1 c
& b5 P9 d4 G. ~9 j1 k# p
ca
* h% C$ x$ B* ~

4 r/ M8 _4 a( J2 z1 ]initialize-settings
/ s  d6 `  H+ U8 q! W3 g  [. Z
4 F& v2 x) ^/ h# j
crt people [setup-turtles]

" u- L  p0 C2 Q0 d8 U( ^9 `( T' U/ Z: y5 ?% X
reset-timer

! B. T+ g! ]  j- Y6 f# `, t# b
0 e- v# `0 Q. W  C$ Tpoll-class

9 W9 b5 H2 h$ H& o+ i9 j# w/ {% H
/ k0 B2 s7 y0 }( J' ksetup-plots

  h% ]0 R0 J9 M* F! r7 `% T* W) T/ @; B
do-plots

9 g4 Q) ?& J3 Jend
$ |, a6 [; h8 w% D# o5 j, _
: A- p7 q9 W0 K3 Q! f% uto initialize-settings6 k) F; ^: F4 {6 p$ j. G6 c
6 w/ u/ m* o$ D
set global-reputation-list []

$ ?4 }8 O+ \+ Q8 \: _
: t3 \: i& X( {: h$ m/ `set credibility-list n-values people [0.5]
! q2 t  S# b' f8 S1 a/ O6 q8 H

, z& L& H4 X- ?  f  ^& v' Wset honest-service 0

0 A, J1 _; u8 U) w! g& T+ l) N! W. z4 E9 l* V5 \+ L; X# [
set unhonest-service 0
8 T3 U, k' F: A# r
, s. P6 W& r9 m0 j$ y7 u& R9 w  J! ~
set oscillation 0
7 J3 ^9 W8 u  g. ]1 J
2 H4 f" a, \* H
set rand-dynamic 0
1 K9 \( k1 I4 g, r* h+ S
end
0 B. n. [& W7 B8 {" O2 D3 ?# b9 m0 j8 v0 y4 z: W! f2 p5 x
to setup-turtles
( c7 o& }7 }0 }. b2 z9 P$ ?set shape "person"
4 v/ p4 F  a" J0 qsetxy random-xcor random-ycor, h# l0 z: F8 ]- C( u
set trade-record-one []
4 t2 g6 M. B$ c) ]' Y9 s2 E

) {, h' m4 g8 r( ^/ t. Mset trade-record-all n-values people [(list (? + 1) 0 0)] * m, a( `( v" r

  K9 d- [' ~6 ^+ Eset trade-record-current []
0 K2 `) K) }9 H9 _set credibility-receive []0 p; ]2 I/ R! W
set local-reputation 0.5
: i9 {# n5 J4 ?0 K& p, W) J# vset neighbor-total 0
) G! ~0 W$ F3 ~" ]; y, sset trade-times-total 03 y7 s; O1 }5 J2 r& l. v
set trade-money-total 0/ v9 {' @" ]7 b% |( ?) v% i
set customer nobody& ^/ ]5 x) V, [' S$ }, H$ r! S7 D+ }+ d
set credibility-all n-values people [creat-credibility]' k+ ?4 }' b" q* V
set credibility n-values people [-1]
( Q. Q+ @. l" V6 g+ [/ j$ V/ {get-color) s9 f! s% ~7 j( p; {/ g

) A1 X4 i7 J% }8 x# x: j" Lend: a7 B3 ]; v7 V$ k8 ?, M2 P7 F! N
7 M8 N1 g5 t# K# K9 o3 p
to-report creat-credibility' v4 l: Q, p; r8 F7 ]4 i) u' Z2 J% j
report n-values people [0.5]
! {# x3 _8 u7 g9 {+ Xend
- A$ V0 }$ [# Z# c/ G" V8 J
" k9 M5 i; s9 H& [) d3 zto setup-plots
( b( h7 c/ d2 y5 H
) y/ k' n2 g" t, mset xmax 30
# [" n" a. @4 B6 K0 O2 {- E

: ~. s' ?( F) q. V' C- iset ymax 1.0
7 @5 }4 h9 `9 v3 X7 s

5 T; P! u. n& @) f& ]6 X& dclear-all-plots
. c+ C1 ~1 C5 `; d9 }( o+ G6 T
, ?( ]* @* N/ n, D
setup-plot1

9 ^/ J% t3 a( a: x" u" R) S
) D. u" Q/ z4 N$ ?3 hsetup-plot2

0 W, [+ s) ]5 ?' p7 m3 x
" k3 E4 _4 H! Q' Dsetup-plot3
& ]9 y: B$ G) x
end0 B! t- r* }5 M( S
: k. o+ l  ?0 z% T3 t
;;run time procedures
9 Z/ U6 M' W1 n4 v# [
8 L: g8 p$ ?/ _) h  v" T' mto go
5 x- T1 d* P# i* ^- s7 `0 T2 B" I5 q1 L$ Z5 @0 Q! g  F0 i. m( j
ask turtles [do-business]

: }3 ]1 f* @( _7 O$ [5 O. Dend
9 n7 k. {6 _- L- O& J; Q. \: y/ k- Z" H% B( s4 `- n6 P
to do-business
6 o( E" _1 ~' m3 U1 W) N. R, i

( W6 @) `+ ?# ^6 K8 h1 t+ S7 s0 Y; F; ^2 p
rt random 360

9 F; |% v* T/ J" Q; \
6 v, F  `2 D% z2 Kfd 1

# E4 Z; g7 u" g( s8 O+ z6 P9 K8 }' p( A% {
ifelse(other turtles-here != nobody)[
5 a, A/ _" A( J* k% j+ [9 B, b" G( A
6 n: Q& L2 ?$ b" V) e9 `
set customer one-of other turtles-here
" ?1 @8 |6 B- K2 j
3 X) |7 t) P3 |/ c% ?- t1 ^
;; set [customer] of customer myself
0 Z1 O5 Z3 f6 k: J1 Q6 Z& ^

& Q: K. `* d8 p  y  iset [trade-record-one] of self item (([who] of customer) - 1)
- W, d! Q6 a; s9 i6 c; i2 B4 X[trade-record-all]of self9 ?) s, P- x& R/ W+ y1 W
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

( s2 }4 j# J+ V% f( @/ g1 u
2 h" S* A$ f+ H( [. T7 c5 `$ ~set [trade-record-one] of customer item (([who] of self) - 1): b" T- C" C, K1 B* k! p! o
[trade-record-all]of customer

* S# D; o  E; d1 F* {" i
, E8 \1 l0 a1 ]; qset [trade-record-one-len] of self length [trade-record-one] of self

- m4 W( s% d# k# F4 C& Y" @
+ H# \7 c; r) k+ `+ Iset trade-record-current( list (timer) (random money-upper-limit))
8 i& J' N# z% v7 V% P
7 Q  v& R" C! v# f1 L( t# H
ask self [do-trust]
7 y7 W$ Q8 t+ O; S: e8 z;;
先求ij的信任度: {7 ]. u& A' C0 p3 u
8 M3 i/ ~9 t5 \$ y8 Q% _. c" c8 j
if ([trust-ok] of self)
9 D9 L1 u* s7 f1 |0 q' F1 i;;
根据ij的信任度来决定是否与j进行交易[
# c  w  O  ?2 u& l+ H  L  lask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself* ^: H- J6 l' A' J; ~0 H

' ~+ F* W5 a/ K% K[

0 }7 s1 U, [$ I4 J
( ?3 Q$ ~- J/ v6 r7 ?+ odo-trade

) o$ w2 h5 X5 X8 g2 }  w( B
* I* l5 R. ^  Z2 Q8 k1 j$ vupdate-credibility-ijl
* M8 E' b$ A: `8 l/ Y' O

4 f. a6 a9 F8 i$ z  ^update-credibility-list8 ^" k! Q( ]- @$ w" [/ p7 H. o

2 b6 M7 y; ~7 _2 S& E+ l
6 o. K( ^# |& v& c# q/ r0 ?& R0 @" jupdate-global-reputation-list
8 C3 t3 G8 G/ R4 o5 ?$ d

1 k: \: e  f6 j& c8 Z6 i# {poll-class
* v2 l/ C  O' Z
) a8 G) r2 w" }
get-color

& W) a3 @6 ]( W
$ c0 x2 i  j9 K& s9 `$ \" u]]
$ s2 @: G# a% A5 B5 g# _3 L; H3 E6 {" K% K! r: c5 c
;;
如果所得的信任度满足条件,则进行交易0 P: J; `7 r' r- ^8 J* T. D

2 l  M* U: `9 W! a. q[

$ u, |9 Q7 F+ c
) |* T! m7 E, i0 Zrt random 360

* i+ a5 V4 _9 L0 l7 Y' @3 C
: s4 y' J' o- j; G7 @. e' Xfd 1
/ c/ z1 O* m% R
' ~6 X: @3 x* g* Y
]

4 e1 _$ |7 t' i; z
3 g+ }" B. K0 l' hend
1 w% p3 ]6 ~/ e( e

+ ^' O8 k  M8 W0 m( K  Uto do-trust ! G( P0 R5 ~0 a8 J6 M7 z; m# @) b8 k
set trust-ok False
) i) }. {4 z& c+ ]9 a
. h) m5 [' L/ j7 K
$ k' u0 i9 Z0 N3 o, H5 G
let max-trade-times 0
4 x9 {. B  z6 r4 j" |foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. r' a- U: w% B
let max-trade-money 0
) P( [0 q: r) Y! Eforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]# t* Y0 V* {9 C! I5 R; e
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
, h) R5 j, i0 }* Q. Y% ]" @2 O/ \8 {$ X8 Z* L3 W, {7 E

( p  Z# _# O* |& ~! Y; ~  Y0 Iget-global-proportion- R. d  J8 G; a7 f& l
let trust-value8 ^6 i  T( r" [
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)
$ g' Q7 p5 K! ~; r
if(trust-value > trade-trust-value)
& q' x7 P/ F/ s( @- b; Q[set trust-ok true]. x1 B0 Y# B& U: s
end. p1 w7 K/ v$ }$ w

" j0 t' X: G0 z0 j5 c/ Nto get-global-proportion
; g3 \7 u! l" o/ u: l! cifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
+ f2 P  P: |7 S1 n" Q[set global-proportion 0]  A7 n) u( p- f; ~* G6 }
[let i 0
2 x- G+ b- y8 g- a" {1 \) Olet sum-money 0  e7 T) I: R4 |- m
while[ i < people]5 |" s! O# y9 O# A' Y$ u) j
[
! D6 m. p, A/ i1 ^if( length (item i2 ~3 o5 X0 d9 Y0 s& h8 g' O
[trade-record-all] of customer) > 3 )
. ?: U0 Q+ k* F3 Z2 U1 j3 `
[
( M. I0 S. b' h, s; N$ sset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
- s9 j, R; p2 Q' L% T' l8 G]
3 J) }# Z% }& H/ I; E' N& y' G" b/ ?]5 |. ~# h$ Q4 p
let j 01 Z9 r% y3 C9 V3 v2 h
let note 0
6 R! n2 `/ b3 ~while[ j < people]
: _) R, X) x5 Q[4 S3 S2 R* I2 u* R
if( length (item i
  U, `0 u! j5 [3 y: {$ q[trade-record-all] of customer) > 3 )
* s- B5 {( v, W$ j
[
6 Y2 O8 N! `, Q. W' Mifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)! m& z2 f8 ]( n6 x' d$ r: O& {
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]- g: D5 H& _: o# b$ n
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
4 ?* e; C5 I/ C]1 @" h7 N( x# V6 K! Z
]
6 G- l4 e$ F; C" P- T8 p" j0 Gset global-proportion note! }9 N6 E- {. I7 |( K5 y
]& R* I' ^( O) m( o( s
end
9 z8 j( I. S0 H# A9 e  o. w3 ~2 d
4 B& z* |& _" dto do-trade
$ f+ V* F: R7 H7 d;;
这个过程实际上是给双方作出评价的过程& R; S3 `/ K/ `/ z1 Y8 {& f+ N! U; r5 Y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价! N0 w& W# }% @
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
: D, O6 z. O# C$ e7 m+ mset trade-record-current lput(timer) trade-record-current. h8 q6 {3 I: i- l: v4 V1 Z" |+ t
;;
评价时间7 C' b" A6 g  t% T4 h
ask myself [  Q, N! K; r& \- I$ I
update-local-reputation
8 o1 ?8 m- \+ z/ u( ^4 @6 Y$ [set trade-record-current lput([local-reputation] of myself) trade-record-current% {; X/ X  L1 L) @- I% k0 k' |
]  h+ s% B" O" g7 P* S
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" `/ P+ \! v) R: m6 K: @2 k0 O3 S
;;
将此次交易的记录加入到trade-record-one
% V3 F& P( U6 P- tset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
! t5 c! d" X& d- o( H- flet note (item 2 trade-record-current )- a9 l) q+ |6 K" N4 p8 E+ I
set trade-record-current
# x- r  e6 X8 p8 \3 O8 ?5 A( v$ r(replace-item 2 trade-record-current (item 3 trade-record-current))
  O9 L2 t5 r) J$ ?
set trade-record-current' N2 e1 c9 l# w4 f% z6 n1 u
(replace-item 3 trade-record-current note)/ u& T2 y8 F$ |& k3 q0 n& U5 E

. F/ B! e6 @% w# U8 e

9 h# G& B' e! B( q* Uask customer [* f) v  l  l  y: d7 i# N- ?% K: k2 w
update-local-reputation( a7 y+ ~( ?+ C  G: R$ ]
set trade-record-current& N" e: i+ |2 _4 C* |+ f# N' V
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
; g0 {9 w( [5 V4 K1 b
]) e: o" Z" _1 P' H3 h

( V% c$ v# T- ?0 Z) n

9 D  A8 X" \4 p" dset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
$ K% U0 R" Z" v! O! S
. R. v( H7 r( g3 P" I$ |
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))  c6 L# r" [) A; I
;;
将此次交易的记录加入到customertrade-record-all
* s8 Q5 l" _9 pend7 f5 j, h( s/ f+ Y5 a: W

8 q4 o0 o6 Z1 Y- \# ?7 Rto update-local-reputation. v/ Y* ?6 D# ]* R/ p
set [trade-record-one-len] of myself length [trade-record-one] of myself
6 G& H6 k$ m- y* ]- W7 x( T  s# P  |' o* Q) N$ K
) U- u* A! v0 V; I
;;if [trade-record-one-len] of myself > 3

/ I8 x8 V7 z( Y- {. U) D5 X5 @update-neighbor-total9 Q- P4 b. z# x& H" x1 h
;;
更新邻居节点的数目,在此进行
; V& b5 v( a$ Y2 ilet i 3$ ^2 y$ M( ~* i! A" e! K
let sum-time 0
/ |$ B# [. r$ V  t! {& J* Iwhile[i < [trade-record-one-len] of myself]
) ~# ^, J! i! i$ y- q1 |[
/ K* O. W' d- Y: j0 Uset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
5 w- \4 z/ ^% K# Q: _set i
! S. r, T- ^, r, ^3 O" X: t( i + 1)
, m$ v- J2 ^8 g: b
]1 @' b0 E# w. ]8 @3 O* N
let j 3
9 \+ {* k+ r( t" elet sum-money 0$ l' }& ]) N9 [! G! O, D" r8 c# }
while[j < [trade-record-one-len] of myself]
! f7 s! d# T$ K* S! P[
+ u9 q5 Q  K: b; c$ E, O& B# 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)3 o; `9 o' X: R0 v% [. g
set j
0 N9 q- [' Z/ i" A( [# [2 R( j + 1)

. ?8 Y* W# R6 S6 t4 F6 n]
# p3 w4 O) u0 M" O4 v0 R) Rlet k 3
  v% l: {0 i2 c# glet power 09 u, s# R/ c3 Q5 c3 R  X
let local 0* W+ X: `& ?; z- o3 S4 r$ ^, H
while [k <[trade-record-one-len] of myself]
+ f8 l5 U' |7 G# |[( R9 F  G( t" |3 F6 J8 ~) D
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) $ a9 h+ |5 w4 c7 [2 m8 Q2 d7 A
set k (k + 1)
3 W* j; V$ E, V$ a( r/ @]" P( p$ G. K( Q& I
set [local-reputation] of myself (local)$ Y) Z# S+ X8 y. h: a: T! m
end
4 z! b. S* V: u9 K" C6 f
& f  j7 N5 D- U' Dto update-neighbor-total( X+ H. f& `' D: j' `- v7 y7 K

' `% g: s" O/ v# U. Iif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
: E! z" ?) E$ u& A7 ]
& s, l4 U/ B% a
: o7 }1 s0 t: F) l; M5 _
end; U: B6 V5 `! ^
# G- Z$ S4 e; W) s9 V' ^
to update-credibility-ijl
: W# w' Z  a4 \8 v3 V4 {8 n, r; H& |# ?0 J$ W
;;
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。1 R6 R' `4 L7 B4 }& w# _
let l 0
% a6 B; a5 u- l3 Z8 Owhile[ l < people ]" [- r9 y' Q: ]; c3 A0 [5 `4 Y! b
;;
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6 p5 q/ U8 a: [1 t
[4 m0 K2 I( J# U; C3 `
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
& E& x$ B( T: b) T# B6 ]; Iif (trade-record-one-j-l-len > 3)
: Z; i0 c) t7 s+ m[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( k3 d4 |5 Q' w3 P
let i 3
3 E# h) p- v- t9 v( Wlet sum-time 0
1 I1 k6 y% Y. V7 M( w& [2 ^: h) q& Hwhile[i < trade-record-one-len]
! a6 m( m& `9 e# s, r7 _[
' f9 ^5 T. Q$ f4 }0 W5 C( Mset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )! P  i, a0 h" z: _9 u5 u9 D6 W
set i8 _" ]! \; Q- P. n3 }2 j& w
( i + 1)

- d  q  |& n* r& ]# Y" S1 h]
1 e, O- K% \" \- F: a4 w* i4 @let credibility-i-j-l 0
& b; s2 D; d% t* s! V) B;;i
评价(jjl的评价)
  I9 s! b! y/ wlet j 3
8 Y9 ]; s. @$ Qlet k 4) Y9 R9 _* P9 K2 j! p
while[j < trade-record-one-len]
; Z5 _  L1 o; b4 `% B[
7 o" G# ]0 |, `7 hwhile [((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
. U: O; A# q+ r7 c' l- Hset 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)' M/ ~3 w; a+ L8 M- t
set j, A, R1 a0 m( S
( j + 1)

/ x* W7 W. \" S, n( H]+ U! Q- F' E1 j3 @0 [
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 ))
( B1 d% B7 M& g" w+ z- K1 e. ?
# v9 B& D. D. ]
/ R; k5 i. l4 N7 s1 S
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)), x. Q# b& d" `8 ^* P. f
;;
及时更新il的评价质量的评价
7 ?: t7 I0 w; \set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]' D: c2 }3 l* T  C" G. f
set l (l + 1); j& D' [1 f7 W- r
]
. b5 c0 m) q5 n- ?) g8 w3 `/ uend; C0 K4 q$ R: s: q! o5 Q8 H

* ^7 z2 X% x, Q( Uto update-credibility-list
4 m& n3 Z2 F0 y) A- `! j) @- Llet i 06 S, q" z3 o, Z  R& |
while[i < people]! ^/ k  z  ~. R3 v& c; e
[
' J6 Y; C0 o6 L+ L* blet j 0$ m$ h7 n2 l7 Y. o+ V# D7 C
let note 0
0 @, p) A7 E* R' r* Z8 e. `let k 0
4 P, [1 s; ~0 |# t8 }, h  A- M9 B;;
计作出过评价的邻居节点的数目+ H& _+ h1 r4 I0 G1 q7 k
while[j < people]
3 k% l' p. T! t, N5 t" k[6 s* m( j$ A% O9 ^+ _
if (item j( [credibility] of turtle (i + 1)) != -1)6 T7 j6 u! C% @/ L
;;
判断是否给本turtle的评价质量做出过评价的节点- C$ ?, o- i, I
[set note (note + item j ([credibility]of turtle (i + 1)))
; s: L& r& s  w( U) T( u3 G;;*(exp (-(people - 2)))/(people - 2))]

4 f9 V7 `! R7 x& b: Bset k (k + 1)3 h! t3 r9 C- p  w, z" J; k
]8 l& w  s1 P$ G
set j (j + 1)2 k* N8 T& H# A! `
]3 G! r, f/ p; H( X) y; |
set note (note *(exp (- (1 / k)))/ k)
2 l; y4 a5 E- y( S+ H# E! rset credibility-list (replace-item i credibility-list note)6 ^8 Q: S& \) |( f# m$ f
set i (i + 1)0 L+ h% A. ?* S7 J3 y
]$ f$ v$ U) j9 Q5 ~# O+ h! S
end
9 o  H6 R- F& a& I' J9 h. @
' Q1 o" O0 U3 M0 u2 c* ?to update-global-reputation-list* I2 O+ V' H* ]. s6 z5 l
let j 00 T3 a. |  q2 K, D, D% ]! C
while[j < people]+ B. v  v& g: r# O9 ~
[# X. F" A1 p/ k2 ~6 E' Y3 U4 W
let new 0
& b3 ?, w) |+ Q;;
暂存新的一个全局声誉
) B6 y/ U( D( j' w! ^5 I8 Ilet i 0
  c5 h1 c/ W, F0 Xlet sum-money 0
- A' x7 l3 K3 P6 [9 Llet credibility-money 0
& @) P, b( _6 D. owhile [i < people]$ @0 l; w6 E/ q5 Q% j! K. }( p! _2 i
[
, K1 R3 T+ }3 Bset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))+ Z+ u# {# J; l8 X  b% z$ H7 |
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
: Q) d; p9 J; |( sset i (i + 1): H! A' A0 h! B8 l
]* b9 q6 J% Z, F4 D6 n
let k 0
/ o' Z. `: W/ E9 ]+ jlet new1 0
; z4 F' {5 O% k+ ^while [k < people]8 r) `, ?2 [- x9 }6 P0 I! n' Q$ A
[
* G9 i: }0 Z2 S5 u* D8 Uset 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)% A) y6 S$ l/ z1 k% O2 e
set k (k + 1): O/ B* ~; U5 k) m  @! X$ k
]
3 E4 M: f( L1 K0 y2 V. iset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
, w* }- g7 z$ l" L4 `' nset global-reputation-list (replace-item j global-reputation-list new)
6 {! k2 i1 k: `set j (j + 1)# E$ ^0 g+ v9 Q8 ?# d- m8 m8 o
]0 v% b5 R6 l9 u. ^: ]
end
( t$ M1 v- t1 ~
; L1 r7 O9 z8 D0 @7 t3 W' `' L/ Q2 I# |8 E
/ k" F; ^. z0 D% h1 J; H$ ?
to get-color
2 W7 \. C& f+ |
' D9 ~" Q% u2 }% O3 k" lset color blue
9 [* p) ?& i4 ~" H5 U
end
+ O7 V2 a8 b- N% c
. J% ?6 J' u  l3 E# Gto poll-class0 {9 Y* K2 T8 o( `3 |$ u
end9 f$ ~3 C  B6 A! W
4 U  O4 d) U# c. P) k: ^2 i
to setup-plot17 T+ F1 ?& B8 h, \3 L
6 b& G' m" G! K7 R  f' _" [' B
set-current-plot "Trends-of-Local-reputation"

. f& b' Z) O- z4 f8 {4 R7 }/ `# _# z4 A% W: H% ~
set-plot-x-range 0 xmax
* ^9 o; I+ t6 N. q% e

; ^7 K% ]6 l$ }7 d6 |- J5 sset-plot-y-range 0.0 ymax
' M% W6 w7 }1 m2 {
end
' _. }. R8 e9 ^$ L( I
+ X" F6 v! o. hto setup-plot22 M) g" m" f9 S$ G) c% [: m4 d
! Q2 ~% l! A( s( {+ d: Q" |
set-current-plot "Trends-of-global-reputation"
3 t6 x+ u8 m' }6 G
/ f$ {: s" \  l/ f
set-plot-x-range 0 xmax

- ~7 e$ {4 H1 D( v" a# x: a5 _/ r9 N! u, l! \
set-plot-y-range 0.0 ymax
, _0 Q% o! Y: @$ R/ I$ X9 _
end5 m  G  _+ b5 T- Q' T2 x0 H
. t9 M! t0 S* Q: s  `- r7 A0 r) I
to setup-plot3
' t7 q8 a+ ^: C6 v2 v: q. ]( d9 d" i$ Z. H" q0 J8 j9 u2 X
set-current-plot "Trends-of-credibility"
8 q7 _; [0 O  \
9 b* k# i2 p, G+ {- ~
set-plot-x-range 0 xmax
1 ?! W: ^8 F( x
- G! L& }) V- N+ [2 D
set-plot-y-range 0.0 ymax

2 d$ k0 Q- Y) R* }end% A" m6 v& D' Q% J" v( D
& b# K3 Q) R6 ?; ]/ X- i" {
to do-plots
+ {3 t* q) D  S5 vset-current-plot "Trends-of-Local-reputation"
" a# h' Y! d" O4 lset-current-plot-pen "Honest service"
9 p6 z2 @1 Y( U: n% i. K% W. Cend
# `, l5 q! p+ |  G. I7 O* p5 G' L% h! F' N  Q
[ 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.' ^2 k3 [: R( R& O

8 f6 b: u9 E, P/ B; p% S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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