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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:
5 V' g: |; l: C6 d  ]/ qto do-business * h2 H5 v/ j$ q& Z
rt random 360
9 F- a5 K8 U7 b- |5 r7 p fd 1
, D# F8 ~% g+ J  n5 ]1 f ifelse(other turtles-here != nobody)[
  t& d4 r. x9 w" I; ]8 Z) u   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 a' x0 E' ?& [  {/ U; _- ]
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
  a& D, P: _  j% E   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer( {6 |+ X( M1 ?, c: o$ m
   set [trade-record-one-len] of self length [trade-record-one] of self$ d* Y% f  V# i4 r
   set trade-record-current( list (timer) (random money-upper-limit))
, e/ ^% f' A8 k( [0 h
5 k- [7 f! h5 [5 k) z- O问题的提示如下:
- R4 p( s# Y! N5 J2 e- b. E
5 ~5 ]( y9 @; P, g7 L8 |" B8 ]error while turtle 50 running OF in procedure DO-BUSINESS
/ Q" b1 Y: ]5 @. n3 r& ~  called by procedure GO
. j. B) Q* i2 d" |OF expected input to be a turtle agentset or turtle but got NOBODY instead.
9 G: T% i: f6 J9 G. P( p' r2 O
(halted running of go)4 y3 Q7 ?) l8 [! E
( V. ^+ X+ k* u- M
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~~
+ A/ {4 M- N3 q) s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# u7 R% ?# \% s8 P/ X5 ^2 U
globals[6 C9 a/ k" J% S/ }* S& s
xmax
4 ?$ `0 C2 D. H2 gymax# K2 }9 v2 P7 S
global-reputation-list
$ L) @. |0 j( Q( |+ k3 \1 \
: [3 B" ~6 R; Q;;
每一个turtle的全局声誉都存在此LIST. F" a8 n6 O2 y# Z5 b9 m
credibility-list
* @- _# \& A( q; z* D4 W;;
每一个turtle的评价可信度
! A% y0 f; R# _7 o: P# p& W5 y& lhonest-service
0 s) x* Y0 c$ j) v5 uunhonest-service
9 b2 w4 k7 V, ]  t: x* l9 s) Loscillation6 w* [6 u$ Q; d" k- D; z% T
rand-dynamic9 o& c/ H0 d7 W3 a9 L
]3 C: q, J! N3 w3 B; o: |
& Q8 i; @% d/ L3 E6 k
turtles-own[
& \% R( Z/ @7 ltrade-record-all) u  S$ Y* d# B
;;a list of lists,
trade-record-one组成! s4 a. O8 p) q0 P9 ?, o+ j
trade-record-one
; n1 x# x' H, 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
% k; @) Y2 O. U
( @5 u+ v5 S1 j1 a( a' B;;[
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]]$ C" P: l( Z  d$ b; k7 S
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]
. t* y( N7 @* U7 R- _# g+ ^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list2 ~$ G* \4 R" R1 L2 @" _
neighbor-total; p% a. y& q/ O
;;
记录该turtle的邻居节点的数目
3 g% W; M3 U) ^" y/ itrade-time
0 w" Q+ I. ~/ \; O' V;;
当前发生交易的turtle的交易时间
1 C3 C) _: [$ A. Iappraise-give  _; W# e: S4 e8 S. f8 B
;;
当前发生交易时给出的评价
# f" A/ i. Q- Z1 W! s7 V, sappraise-receive
& G  c2 z6 v$ e; D9 v& n6 A;;
当前发生交易时收到的评价( i0 U2 K* {7 l' o: `3 B* v
appraise-time8 F( z. x8 f% I- {  U) b+ n$ q! a
;;
当前发生交易时的评价时间. e8 }3 B4 W! z8 ^5 O/ s; j
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
: g* Q4 W, L0 h! M" ~5 [trade-times-total6 ?  t# \; W: o0 ~* G2 l! X# h
;;
与当前turtle的交易总次数' }3 \9 s$ W4 \+ K
trade-money-total) ~/ C  n' c4 Q2 S0 V+ j- ~
;;
与当前turtle的交易总金额
- E9 a, ~  d/ G; o) zlocal-reputation, X5 E: F! L6 c% s6 n+ l9 @& n
global-reputation
  ^. z* @4 ~" ~  v$ ^7 i1 _# D  }credibility
7 `* Q, u! [3 C;;
评价可信度,每次交易后都需要更新6 g$ }' X7 P1 E% S+ R8 O# W9 x
credibility-all
& w( S) L5 b# k;;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
- q6 W6 u- Z% L8 |5 R5 _
+ A0 r6 V( O' X3 G$ H$ I: W;;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. |7 d( }8 _  n. I2 U0 g9 k
credibility-one
" A: Z6 k7 ^/ h: K) E$ x;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people! A2 K8 ^& Y- j9 B4 E1 B" r+ N/ z
global-proportion" s" b5 Q( C7 a/ K
customer# v* D3 ]( x) q) T" L+ E  a% t3 s+ ?( y
customer-no& k: S! w* u# E3 r  v
trust-ok3 U" g* D; u- q" M
trade-record-one-len;;trade-record-one的长度
* K9 f- r; `1 |9 l9 _9 A]+ F( y: y4 o( h+ {. w! j2 i: e

" `2 q7 f6 M$ ]  p  k;;setup procedure
. X) P# h& F8 }7 j, F0 O4 A
( n2 r+ V1 g6 S9 D+ hto setup( r# Q; |, C7 F- I$ x
* }, }6 K) U  S4 B( e- E# f! Z
ca
! F" F- F- I; J

( z* C6 m. N0 Hinitialize-settings

4 n# _* A6 [* s7 h& k6 t; E) K' O# N& U; h; J+ f
crt people [setup-turtles]

: B9 _5 m  m& p/ L0 K0 D9 S* H, K$ p7 i1 s4 n% ?; e) X
reset-timer
1 p1 w! B3 ?' i1 Y
) y1 ]1 c& b# I- c0 w1 \, U
poll-class

4 _% D+ q; v& C  F3 L) h5 ], ^0 v( u
setup-plots

3 k" b  W  \# Y! R) |
$ h/ y: V8 w6 H5 z6 p: ]do-plots

0 S. r: U' ^( ~9 J. `/ P( zend9 N  \5 S8 V6 Z  P
5 b8 f) |4 I% B1 k$ F: h% y
to initialize-settings
# h1 B, W3 G, X1 `' e% F. [3 @+ z2 t* b& m7 W
set global-reputation-list []

6 {4 {. q7 }# j2 m' x
- y. @! `3 {- `) Q( }set credibility-list n-values people [0.5]
$ b) |# v& f( S
- |4 R+ U, c% d3 ]  T8 `
set honest-service 0

; k5 q4 L4 T% A/ e+ Y: k( X
  f0 N8 X" O/ v; v! Xset unhonest-service 0

& a+ f4 ~& e  y" K* u1 _
- g& Q" i6 H1 D0 w# y5 H' j; l  sset oscillation 0
2 X) D9 t, L8 y$ x, q
, }+ f7 B2 V% N5 \
set rand-dynamic 0
* J( {$ G! j) j
end
7 d7 r# Z% v. _" ~. H1 d% W5 f/ b! C: ?5 a0 i  W; _: U8 M! x/ I" u
to setup-turtles 7 {! J. C$ @: d0 j  n% I
set shape "person"! E$ w) p. L, Y/ n) M5 D1 {
setxy random-xcor random-ycor) j4 ^; w% ~! O, _& L
set trade-record-one []# g5 A% K" m8 v% W$ k+ Y1 X

4 F, N( c' x( y! T. U+ P: ^set trade-record-all n-values people [(list (? + 1) 0 0)] 2 y2 q4 Q) A* V! L
0 t+ |' Z3 a! |' W5 `' U7 R( l
set trade-record-current []: e+ j, p1 M+ j4 F7 X  ^: [3 U
set credibility-receive []# r7 w$ t) Z1 q
set local-reputation 0.5& P0 l& o) L1 K" \) k
set neighbor-total 0
* a+ h$ ~- u& h, F2 L8 oset trade-times-total 0
5 j( g7 H+ S! J% z) C7 ~4 yset trade-money-total 0
/ U6 r7 ?) p4 Y0 aset customer nobody
! C( u! ?1 f1 T! M3 Q/ f7 Xset credibility-all n-values people [creat-credibility]
: s0 w% f- ~* J1 wset credibility n-values people [-1]
4 i3 w* ?, W$ p; Nget-color
; f) l$ P0 d' B% K  A( i

+ U% x. `$ U/ A0 @# Q6 _: Nend- c; x, \; G/ Y1 o
. a% ^% A8 o6 g
to-report creat-credibility
1 j; B2 _; F1 c) X8 r. b/ I% Greport n-values people [0.5]2 V- _/ X, t3 Y( n0 E
end) D4 W  F, r. V) X# Z2 o
% z! S1 R. A  j2 E9 z; O" t
to setup-plots
* ^' x5 k9 Q: S9 d0 I% i% [3 L6 N* l# n/ H" y
set xmax 30
6 h9 p% Y$ E9 s9 o* y

; {2 m& |, w! n' }set ymax 1.0
+ g/ N' |: S8 ~, e

( U' N8 o" _  Z9 V" Hclear-all-plots
4 d3 Y% `/ K: O# y8 ^8 M
8 F  n  \( E+ o. E4 L
setup-plot1

+ u  N& ?8 g9 `" n: V' c  G: N! z9 c3 `7 d# n
setup-plot2
. V# f2 Y2 Y& M8 ^
/ L5 f( h3 s9 V/ B( d
setup-plot3

' u  z6 |; A/ a& \# t6 Rend! E/ N+ a  P9 s5 q+ H
9 w6 d% n0 _" w  c! c
;;run time procedures
, @8 p4 I% u& H
7 \7 M2 T; a3 U/ p6 v) {! r& Mto go
# b& W& A6 B; m/ Z6 K) }, |% ?
, `, K1 E  o& ?7 ?- c! X  Jask turtles [do-business]
% B) ~0 j3 R  ]/ I1 Q( [- }; X
end
! b/ H8 k7 o& F' w8 _/ f# n$ m. x1 {( Q* p7 L
to do-business , |) e+ k2 H* W* C

% t: R  V4 @% h, e6 k% `% z, A# L/ `0 I+ V
rt random 360
6 Z7 ^2 P; J' l2 ~, B( M

; Z; J. J2 h/ E/ B  C: yfd 1
- ?% F# G- S# ^' k5 c$ a
3 _- I. P% s) G
ifelse(other turtles-here != nobody)[

5 Q5 p1 Z+ u# O* i
( q0 j4 ?& n! lset customer one-of other turtles-here

3 t) ?5 ~% |, R7 Y% p6 }6 b
( K7 ?+ |' [% ^( ~2 B;; set [customer] of customer myself
9 `, Q+ o0 |1 b) y0 U5 m

, J. o" k$ U+ G$ @6 fset [trade-record-one] of self item (([who] of customer) - 1)4 V$ A" k8 Q. ~
[trade-record-all]of self
8 I3 c0 H  [2 o4 P0 ^# k;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

3 ]1 s6 u3 c5 u. G: V& I/ A; f8 t5 \6 X6 N
set [trade-record-one] of customer item (([who] of self) - 1)
' D: P* b" T! o3 S# U[trade-record-all]of customer
8 W* |& j& Z4 Q% m6 \8 W
! d  h6 i$ m) `6 o* Y' q' i' C! c
set [trade-record-one-len] of self length [trade-record-one] of self

. G3 ~( w0 E* Y. Q' _! E! v7 X
& U' `3 _0 ^8 O$ R/ {! {5 p: Nset trade-record-current( list (timer) (random money-upper-limit))

5 L. p) F+ [( P. K
& J! H: S2 k$ @0 O! }" Eask self [do-trust]
/ v- I' H6 A6 w7 _- {6 ?9 V;;
先求ij的信任度
; @' x. H6 h2 i7 J$ {9 ~; U4 M) z. U7 r% `
if ([trust-ok] of self)
5 B8 ]/ v: I3 V: q7 S) ?;;
根据ij的信任度来决定是否与j进行交易[9 R: F2 u! P# Y9 j# k
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 S0 z4 ^1 @( U2 [
/ ^: }$ ~! k: z+ [( g* w9 `/ B
[

: p1 B/ ~8 I' P. |! o! ?  h
* R- T% e+ z8 r( jdo-trade
* P0 z6 {: @4 H9 L( E- H, Z7 A
0 P4 n6 K% z7 a- W/ u9 j
update-credibility-ijl

% M) h% ~" F8 s: G7 n' d" ~# _2 z3 H
update-credibility-list
; y* f7 O* ]  {8 ~5 a
3 Y7 j% I: e* ]6 c) e

- W' A' s3 r" E8 S- d( zupdate-global-reputation-list
4 G9 B; a, a1 |) N( [: }/ }
) l6 H- `0 N/ E: m/ M- x+ S
poll-class
, d6 B8 W3 U% A  ?2 q- ?8 n9 `

6 x8 E& k8 y3 H' M+ Y! Q. gget-color
. i( B( j8 C) f/ @, R
, ?% h# G) ?& `1 q9 V! ?) l# A
]]
  r3 m- d% q. z' q* Y4 C( W5 W& u3 u! H$ x% _
;;
如果所得的信任度满足条件,则进行交易/ c; u- B5 N7 p5 K! O! s8 x
: m' B  o( B' t& S: I
[
6 S3 t( d, K' W5 D7 Z1 Z/ p4 u+ h

4 K7 f# W& J' \& B3 N- e) ]rt random 360
5 C" Q4 A; |0 z6 j! \
; m5 H  t" z( R3 @$ O
fd 1
& N. e% |# V3 T; u5 W- P( T* b

& A3 v8 c: S- S8 N* N]
- K7 D1 ~" R. Y' [

2 G5 D* Z0 t! ]0 T4 n: ?end

' [3 c5 y' x+ ?, x0 }! N" u. h
- V8 N7 l, I7 G1 cto do-trust
1 G. a5 Y$ q+ @set trust-ok False
9 ~8 C7 c1 U$ S$ |3 l; j
0 k! M/ B: U2 f( Q: G: u8 y/ a

/ h, f2 u2 q- ^1 e0 Qlet max-trade-times 09 X6 }3 s0 p: i& D. Z# {9 \
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]5 Y, D5 d0 b; U8 f& o
let max-trade-money 06 u6 P9 i9 {; V8 z
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]+ e2 g; D0 t. _+ _1 O; U
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))" M" W& f, _. b% U  R
; y3 Z  W! N- p# U6 i% [

3 {0 X9 Z5 n1 R6 x4 a% iget-global-proportion; g  C: A+ Z1 a. l2 W; U0 ?
let trust-value
, H$ ]% E: [0 p- t' Xlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
# z7 Z; j/ i1 c; f6 P  }( ]5 ^& l
if(trust-value > trade-trust-value)
9 f1 V; i8 x( J+ @- i7 O( r[set trust-ok true]
6 v1 q2 Z2 m, O& H% L9 Q1 o- v( {end- X  O; N. Z$ {
; m4 c* u) M' e# |$ X8 `; H8 Q5 z
to get-global-proportion
# n2 R1 n+ M! k$ m* ^+ x, jifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
+ M& ], j4 [* _# ]4 k( s# }* o) y[set global-proportion 0]
/ S: t& p( @& P* s1 `* b[let i 0& S# Q6 Y( {7 B* u. H/ z
let sum-money 0
) t! D9 R% [+ ^) E" j7 ^while[ i < people]% U) E1 k7 W: e  a7 _0 s' f0 {
[* O) @5 y- j* V& {
if( length (item i# v& I" p6 v! w- m+ @
[trade-record-all] of customer) > 3 )

& k: g  j+ ]0 r5 `! ^! I[
4 z+ p3 `, b6 ]set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
/ ]( M7 t, t* [  M+ h  V2 w  d]/ \0 o9 S& F4 _0 _( @# |( b" i  Q" D
]+ u5 D: U* H( @% p- K# n) l
let j 0' d; p. ^! ?; [0 n
let note 0
& y& ^2 S1 W7 K8 ?) w. B" V( Y. @while[ j < people]
$ @8 N0 V0 v, D' q: l. O[" K! j' H# W9 }6 h) g$ p
if( length (item i% \8 q# B# f7 |
[trade-record-all] of customer) > 3 )

* h  t% [/ }% _0 s) e" F- i6 ~7 E# l[
1 F, C0 [  n- g$ c* v% l; Aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
' {( `* |4 _$ ]% R! _# M[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]- _  x" y4 C4 p5 F- I$ y) B
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]1 u* c! j( x. ?/ h) Z4 y
]" S  N( i2 ]2 e4 b) Z8 k- e9 T& z
]
5 }5 `5 D" y1 J( @set global-proportion note
6 y' c8 }- f2 Q" \8 A8 X]$ T0 J$ H' W0 ]' \
end
& k+ t7 S# c' V- t4 {6 F
# }0 d9 M/ o4 P  hto do-trade7 G' H, l# g5 T; q- @% v! u2 b$ _
;;
这个过程实际上是给双方作出评价的过程' B3 ^' M; a' M" V
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价8 ?- \, ?0 g  g
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价: d% d) p# D; a: V; A8 c
set trade-record-current lput(timer) trade-record-current" |: K2 a" N& V3 p) [2 }+ M
;;
评价时间
# F4 x' m' h; R7 M; Pask myself [
! K6 ^) O$ k3 kupdate-local-reputation2 r  }5 d5 j% g7 [2 u
set trade-record-current lput([local-reputation] of myself) trade-record-current
* M# z/ k9 A2 ]) u) g8 ]]9 Z- I3 P; o! T2 `& P. [
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ M, l' q0 J1 ^# G# H
;;
将此次交易的记录加入到trade-record-one, ]& B' g/ F% w( s+ I1 Z  |% x
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
: X" a) z0 M# Qlet note (item 2 trade-record-current )4 o, v3 h" B$ w9 l+ Z9 q
set trade-record-current( ]' Q; m9 ?' R3 V( l" _  X
(replace-item 2 trade-record-current (item 3 trade-record-current))
/ x% @2 r( a0 G. |: ^; ~
set trade-record-current
4 v) |3 k3 [: P. U4 d(replace-item 3 trade-record-current note)7 m9 }! l. j" V! w

2 P5 P# T$ z1 a; n2 _$ [
3 y5 L" ?0 j/ N" G4 ~; r4 g9 g# Q
ask customer [
- b/ p' C* q; a) [3 Q7 Vupdate-local-reputation
+ o% [0 H: f* Cset trade-record-current
$ t7 j. O0 l, b(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
7 t2 |8 n, O3 {9 h& n  `6 P; q
]2 C' ~7 b' u4 K2 H, _. e

! p" c( K, i& R/ [
3 N$ v3 o! G) {- E% J9 h$ z2 B+ m
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
5 x$ [% o1 o) ?, ~( `% k: v

9 ~% q4 W! H4 X8 |: X1 Dset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))( \8 @1 n, W/ N# [0 F+ ]8 v% f/ S6 o
;;
将此次交易的记录加入到customertrade-record-all
. F2 _9 m0 \4 k( [4 _3 R; ~end
. T( a, F0 W" {+ S' ]+ N  @1 B# E/ ]+ z1 U  U
to update-local-reputation
1 c+ l" {. V: x  e  V& K  T  W7 ?set [trade-record-one-len] of myself length [trade-record-one] of myself/ B. m2 z* @* @6 _3 g8 |
9 ~* P, r1 @+ w$ ~. o* P& v6 t$ ^
4 L9 O2 {4 d* [
;;if [trade-record-one-len] of myself > 3

& S) Q; u% E+ X2 {+ dupdate-neighbor-total
: W( }9 q5 G4 k;;
更新邻居节点的数目,在此进行  g: m+ L( O" t: L
let i 3
3 v/ ~5 ^/ l$ Q. v% o$ mlet sum-time 0
0 A- [. q3 |3 Qwhile[i < [trade-record-one-len] of myself]" U0 J/ F3 ?, o3 m. X" t6 ~% I
[0 ^6 L, T+ v7 `/ S' Q
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )2 ~; f& S0 \/ b3 u8 ?3 S  K" U
set i6 m9 }0 [0 E6 b! A: s
( i + 1)

7 q5 r8 j( L) o- d: r# u, y3 ^]
4 p8 E& D7 o! d- }let j 3
( D& P( ~7 b' `* U0 ilet sum-money 02 T$ K* A; B; L0 ?& K
while[j < [trade-record-one-len] of myself]% q3 x) Y5 Z% k
[& @8 }$ p) w- ]. N3 m& k  B+ K( b- x9 u
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)
$ P' ]1 g. O4 E4 M  t5 Lset j! f" ?0 N7 r: j" \; l
( j + 1)

$ S. D5 _% e8 n7 f7 K& i) k7 p) O]
' U. Z. ^7 m8 w% y% `0 v9 S: N" olet k 3
% C1 o" V! j$ J9 f' rlet power 03 I  A' U9 N4 Q0 t8 p# c
let local 05 s2 R7 }0 ]# K" ?
while [k <[trade-record-one-len] of myself]) F( H' E) T9 y/ N
[
9 A8 O8 J; R$ ?/ z* Eset 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) $ ^" |) Q% `5 A0 t8 J
set k (k + 1)
9 p2 F) |* M3 B]) }& i* [! \* S" B! W
set [local-reputation] of myself (local)% ]. l1 P1 b* ~/ L9 S
end* g) p5 f! @2 j2 ]1 g

" `* M! B2 y% Q/ Q& a0 v! [to update-neighbor-total- a3 k6 ]6 C( S# L5 r
0 l( G8 S3 t) c: H( [& a" M
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]$ K; Y) |" m: K7 H

, w9 |$ u3 \4 `1 \% L# z0 v* i

% `# k8 V' L# s" T, Xend
" O3 a6 p+ }4 [7 s7 E
' S. G6 X( ]+ k) F4 S& wto update-credibility-ijl
7 W+ b& r0 p6 ?3 _: ]# ?
7 n# `+ u* u4 D  f$ M2 E, O;;
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。
, C) \2 G3 x" E' T& E5 y9 v& _let l 0
+ _0 e) w* w! B0 F; j! {while[ l < people ]0 P& p4 W$ h3 s
;;
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
$ b& c! X+ M5 h: l* v& ^[
2 ^2 y8 N) p9 S/ glet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
# w8 K$ W7 c2 Uif (trade-record-one-j-l-len > 3)
3 E5 m, M$ t' N! ^' T$ v1 v[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
: n( E4 u# p- P# n3 U% vlet i 3# s! I9 `5 h. Y( r& J! O4 l$ X, ~
let sum-time 0% [+ _/ a- R( x; M/ I# j3 s
while[i < trade-record-one-len]
' Z  O. r: v+ X[
( J0 i, l+ g* K4 N: l$ Oset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )3 _; w2 _4 K2 p* @
set i6 _! A% X! R) _3 f3 D
( i + 1)
4 `3 G% [( L2 p. o7 O3 I0 g
]2 ?$ Y0 P6 f2 t, A
let credibility-i-j-l 0+ F+ X- w3 k1 V5 Z4 z, M+ T
;;i
评价(jjl的评价)
- o8 L6 Z9 E; j$ C1 K, g6 \( z% Vlet j 3
! i5 C, G% I6 D7 V( b' Zlet k 4
+ m6 h4 \+ |( a( h. O8 k$ p$ Xwhile[j < trade-record-one-len]( y& H, P' I9 y+ f" C
[# G* I: K% C- }9 m
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 h$ o* p4 j/ r4 L# [) U" Aset 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 T- P$ q5 R- jset j9 h8 Y- f! s) {/ ]( S3 X# R
( j + 1)

" D# }8 Q8 \! V8 f7 l0 O]* w/ Z0 `1 q! O# W. @
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 ))
( q; u  e9 x- F+ f5 j, S4 h$ ?1 A
3 ?8 ^: p( k' M" Y3 R+ @
) d. s# x& G* @) C  t, t& l. H
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
3 j% w4 a+ ]$ b+ q" o;;
及时更新il的评价质量的评价
  j9 T* C8 z; j$ J* rset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]3 U- y' X( n$ [% ^6 T8 w; w
set l (l + 1)
/ |$ Q+ ?4 D6 y1 d" u: ]! F. f% J* T]
$ H5 D7 b0 \) v; [. M( \end3 {, `7 `, A' B: ?

: @. I) l1 d1 m7 B+ e& f! Y8 ?to update-credibility-list# I( q+ W3 }: O
let i 0* i" s9 ^! y. [/ r5 @# ]; C
while[i < people]
" y- Q! n( V+ i- X2 m/ o& K  L[
, p% [! c; t! p6 {7 Y3 \1 T3 _4 |let j 0& j8 `# g8 L) G+ c9 r9 ~: B
let note 0! e, T8 Z) C7 ?, b$ r
let k 0' {8 q) s; \8 y( t& [: Z
;;
计作出过评价的邻居节点的数目
' k6 B0 z  l3 [- ], xwhile[j < people]
6 q; k: n0 K7 {; O" X[
/ ?) X4 X5 X3 j- wif (item j( [credibility] of turtle (i + 1)) != -1)) G) w9 x4 l; u1 j6 J9 `
;;
判断是否给本turtle的评价质量做出过评价的节点
5 F: K  h- z8 z$ y[set note (note + item j ([credibility]of turtle (i + 1)))
" q3 E' u/ W0 E0 A* a;;*(exp (-(people - 2)))/(people - 2))]

8 A- a0 x3 h5 J( h" o6 V5 zset k (k + 1); f$ r; K( [) P4 Z% ?
], A" G# {+ ]: v1 b0 s
set j (j + 1)
$ w$ d5 B9 {" H% ~]
) o& ]/ V( G! A7 p/ a6 @0 h6 Q5 mset note (note *(exp (- (1 / k)))/ k)" U( Q4 q4 @% N5 j! Y: u6 X
set credibility-list (replace-item i credibility-list note)
) }; E$ N3 c$ q6 }, d, b$ x! Tset i (i + 1); j3 U( f" F3 ]5 b$ e' L& \
]
0 ^. A0 W: B; F$ Nend$ N( H: f4 q* o; k
, V- {! W# ~. C  u# }  q% y
to update-global-reputation-list2 \# v/ K7 `$ x+ F
let j 00 C2 z5 a2 R6 A
while[j < people]/ k' G9 k+ e, B$ \
[( V8 V, n. ~- e/ b8 a
let new 0! C6 x5 ^1 o  t8 ~! o% ?
;;
暂存新的一个全局声誉9 l6 R" B' u1 H4 \, q; k6 P/ R3 v
let i 05 g! G2 u, E- m; x/ Q% t; _
let sum-money 0
# Z; D* r% w  Hlet credibility-money 0( C5 \( _( Z- Y( l
while [i < people]
4 a* q5 \/ v9 L) _* Q! R0 M* m[* @/ a' h1 H. w5 j# I- Q
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))/ H; j" G, b& q0 n) T  J5 Z
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
, s5 t" `& o; U. B( uset i (i + 1)3 A) u# E* e$ l' \
]
/ [* c" [7 `! W+ c( K& A1 L" ^let k 0
4 |7 [& L* K- p" h3 k: v6 Klet new1 0
9 P8 E* s* y5 C& s& r0 G0 awhile [k < people]
& C. X: o6 D/ A$ m+ K- x' f8 m& J[
2 C6 e- H$ a. o0 G  a$ Mset 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)4 L; {7 L' i' N
set k (k + 1)1 R. J. S7 D. Y  p( E1 X) [9 V
]% l, m$ d2 K& A
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)   Q- T  E* m5 _& B
set global-reputation-list (replace-item j global-reputation-list new)
/ [' k2 V. a$ F8 R7 e% _. [set j (j + 1)% J7 c6 |0 z. m9 O9 r
]! X4 i$ p8 w0 Q8 `+ ~
end% J( G( L. O$ W% j0 J$ C+ F

' U" A# \/ M0 I: [6 u" B* F% x: J+ J7 [

' L1 }1 E4 i7 G# S) Vto get-color% N9 Z+ m: A- H: |* I: u! h
) ]3 Q9 R, W# c5 f. K" K( D
set color blue
! S; ~. b& j$ F9 Q
end
3 o* ], A5 B! t, y+ u7 K+ q! N; e$ O
to poll-class; p# }+ e. r/ b
end
, b1 S: L( W2 g+ V& @9 g9 b3 W# V8 @/ a# {& d
to setup-plot1  K% l! m% e4 ?: s9 P) [7 c& m$ m

1 H2 c# b& M7 z% Q9 Hset-current-plot "Trends-of-Local-reputation"
" S, C6 e; I" p$ j/ e! z

3 r# C* {3 i" l* Qset-plot-x-range 0 xmax
9 `; A# k; T# R, q9 O$ N" Z8 I
5 U' }5 b7 O# F+ O
set-plot-y-range 0.0 ymax

, {! ?5 z& d2 U  {7 \end
3 {- w) O& [5 h
4 n) V" S. |* H/ zto setup-plot29 ~: p1 _1 y( ]  l* f  z
6 I1 l' l! B6 Q! L+ h6 h
set-current-plot "Trends-of-global-reputation"

9 F9 I, r( G0 C5 @4 O" x) g8 {) H6 f+ m4 u1 J0 p) n
set-plot-x-range 0 xmax

$ M& @) q' `8 y7 f$ J' F5 P" t4 S' F
set-plot-y-range 0.0 ymax

) V1 M" }3 e, S" _. P" A* Nend
' p" ?% ^4 B5 @2 Y
) r) z* t' i2 o6 Tto setup-plot3  M. \7 }# H; F8 L, S. q3 u

+ f: I3 e+ K4 g! @( ^set-current-plot "Trends-of-credibility"
) ?- L$ J7 U' |) [/ I  z
9 j- A/ J) O  ^) @6 x9 S
set-plot-x-range 0 xmax

3 D, _) ^" h9 _; F7 P, |, c4 N- Z" C  R) ]
set-plot-y-range 0.0 ymax
- l" G. k" g: g. m" \. G) g
end
1 ^, ]% k8 z7 @& m: `2 o1 o" s/ J5 q) \/ Y
to do-plots
& T# c- p: y# d% y/ B' ]set-current-plot "Trends-of-Local-reputation") D8 {* ^+ t+ V2 W8 f5 h5 J6 k
set-current-plot-pen "Honest service"
& f0 _, C! O; ]3 cend+ C% r% u. N  r$ h
- W7 m1 X+ D: f
[ 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.
& ]! W1 b5 U7 g0 J; n, |7 F& l% p; N# C) s3 }& Z
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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