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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:
. Q' g, h3 C2 Q6 yto do-business
, T' y" m5 p& H8 ^  m1 j( J rt random 360" ]/ p; O2 n0 |1 z$ e1 }, A
fd 1" @; v* G1 T( ^( R
ifelse(other turtles-here != nobody)[& H3 Z: }2 _+ |. `# |
   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.8 ]9 {5 X& {- |6 K. s" f* t2 C: W- y
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    $ r1 l0 T/ Z) C' N9 W
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 P& \; Q" s, M
   set [trade-record-one-len] of self length [trade-record-one] of self# X5 H! V2 x1 u0 `8 q
   set trade-record-current( list (timer) (random money-upper-limit))0 @: q  d3 t& s0 Q
6 f6 z1 z, z  K
问题的提示如下:
2 `7 G5 Y9 D' ~% d  ?% f/ h/ f* \, D/ N3 I5 }. g, q0 y- y
error while turtle 50 running OF in procedure DO-BUSINESS
( c% R  m# ~: _7 P  called by procedure GO3 D/ a4 w% s, _# F; J
OF expected input to be a turtle agentset or turtle but got NOBODY instead.# ~' g7 I. i3 |* c0 S
(halted running of go)" ]  q5 n' o; x: L; k& K0 y7 @

( S" X! E# ?9 F7 g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~~
& T; D) ?6 K" Y另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
  @% q* U6 t( e$ ~globals[
, n8 X- Q" e8 W& {/ d3 Uxmax
( j, F3 d) S, |/ |ymax" M0 x' l( ~: L2 T
global-reputation-list
; b4 r1 _' d3 s+ r: u6 ^( B- r6 z7 s  `7 t' L8 y) b- h+ T
;;
每一个turtle的全局声誉都存在此LIST
& c9 a9 y# y4 {5 ?/ }credibility-list5 N2 v7 j! F) H: r
;;
每一个turtle的评价可信度
5 t3 C0 H8 g- g" V2 }honest-service
6 b6 H1 M# g9 x: cunhonest-service1 g2 E4 T! E& s8 t2 n" Y0 g( Y# N
oscillation* C3 l# D: u7 X6 Q# C' ?
rand-dynamic
) z/ ~+ U8 L0 w) Q]0 c0 Z' ]. N4 I9 T$ o' y
& e- r" ^: u& g9 }* a
turtles-own[- l! d! q9 i  U1 A
trade-record-all! o* J4 ~- x1 W* F8 G; t+ q
;;a list of lists,
trade-record-one组成' K! s( s( q3 M- H9 N
trade-record-one: L1 P- N! n# z0 ~4 t5 o- a. C
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& r& b+ h& n/ ]+ u
7 o$ O! j0 C8 U! o7 t+ d) y/ a$ 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]]' _; u8 t& p. H- Y
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]
; j  p- V% U0 g0 s6 lcredibility-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
' E) E& Z& l2 I" b, m. d$ oneighbor-total
$ N% K/ \5 d5 j1 \  g( o;;
记录该turtle的邻居节点的数目9 u# I/ p; G9 p) m  F- d
trade-time
) P3 U, `& z1 l- ?  ?* g" Y;;
当前发生交易的turtle的交易时间$ \% ~4 s- E  i. Y& i
appraise-give
3 @9 n- m: j. _) o3 }4 `% T) N: s- P;;
当前发生交易时给出的评价
- y  `$ x, ]; u7 fappraise-receive' w; M, ^5 m2 n5 j
;;
当前发生交易时收到的评价) J4 J' v3 R8 R
appraise-time5 B  e0 O5 S# A/ J
;;
当前发生交易时的评价时间1 i1 d2 s+ _; b' [
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
1 `7 z2 j5 ~) h3 F! Mtrade-times-total
+ Z) T; k1 G* s! r9 r& F$ };;
与当前turtle的交易总次数6 ~4 a. E: l, [, t( g
trade-money-total4 G/ j- @6 g) V4 P* z3 h4 ~0 m
;;
与当前turtle的交易总金额
: j4 V8 u3 ^1 F$ g1 ylocal-reputation! l) s& P3 W# t; a- w& |: T
global-reputation
: k# e" h- J2 ?1 Lcredibility
5 o6 V  S) `: L8 I. [) {- e- p* q3 C;;
评价可信度,每次交易后都需要更新
. K3 j6 o6 h* o3 j9 x) x( }credibility-all
6 [- I' I( `6 T0 e4 }1 _" \;;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( ^1 R, N3 c% A# ]% c  g

3 X" d% l; W) F( D' O;;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
& w. n5 H( A8 c" wcredibility-one
4 I: [3 a% R# u. |$ 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people- o: E! P; d: t) O
global-proportion% @% y5 v( L7 U2 \
customer
5 E( W/ g6 N# h7 X" u7 Ocustomer-no& D2 V: H% k& K- ~) d% o
trust-ok7 O0 @9 r2 L4 o' l
trade-record-one-len;;trade-record-one的长度; g" f5 P2 L5 Y" x# ~5 H
]! f7 o, G7 Q/ Q7 c, f! _- ~% V
5 W  [  N- O4 ?3 K1 {  k& N) S
;;setup procedure, K- p) ~8 I5 S' W0 u

/ h% s; E, ]9 b$ a8 O2 |! S' _to setup
6 _. C, K+ L. g; z/ N$ b7 S9 x/ w
/ ^* d0 I  d1 Q3 b. Zca
8 h& a9 Y4 A- [% x" L& e' l
7 ?, ?5 i) d* `
initialize-settings
* f& q( Y* H+ t6 n4 x- q2 z+ `
; a$ i' j& C# r( ~6 ?9 R
crt people [setup-turtles]
, N$ T1 x' j/ b1 h/ r( a' _

, g/ D3 x; E) F6 ^( e9 w$ Areset-timer

" Z* t) ?8 X! a9 o& E/ I& U  i) L
* W' Q2 q$ R7 U6 M6 U8 Apoll-class

- A8 E0 X1 v2 b6 [# r4 S  _# n+ w3 h% `3 ]) V( _) R4 E5 ~6 w
setup-plots
* X1 s5 _# A* M; E! R9 j

! q4 u9 _8 l0 ~do-plots

4 A+ _& x0 O4 o: fend
. h% q! t5 [4 l# u7 P! e. S
. k- P! O8 I7 r- ^3 y8 u  X, cto initialize-settings
2 x2 s. S' `: @: @1 o  Z  X. {4 ]3 x# M7 J$ d# e7 j( R
set global-reputation-list []
" W5 r/ V' N* ~+ X

2 g# K( W! o; K5 d  S0 T" mset credibility-list n-values people [0.5]
* d: {7 z$ A" d
4 G4 E! u  y& O4 i
set honest-service 0
( ?7 y# w, [# }1 ~; P

& S! ~7 e! K8 V7 j! j7 V+ H' Bset unhonest-service 0
- e! R) f% V* C# I+ q, z

" Q2 R2 b. u1 ^8 Oset oscillation 0

! Y( A% E' L! w! p, g( J
% D5 I# n9 j' T+ Z# u3 Oset rand-dynamic 0
0 C$ X4 ?) A7 C- G; r+ l
end/ K4 }: `3 F, b
3 H) G" I' o/ k' Z9 P* L
to setup-turtles
6 R, Y. a3 m3 p" Y& }+ Uset shape "person"
. a) ?& j2 v2 g. c$ Zsetxy random-xcor random-ycor
) V3 ^! Q! ~. P  g- X7 E' kset trade-record-one []
7 h9 D) Q" \  u- c

' J0 O! |4 X9 N  D5 z. |set trade-record-all n-values people [(list (? + 1) 0 0)]
! c# H3 q2 }- t8 Y
  d3 Q) D, u% N. Q6 u; E9 T
set trade-record-current []
: P  W5 n" {6 a+ wset credibility-receive []
- A: s0 t& R% P* K& Pset local-reputation 0.59 w" Z' L- W$ Q7 G% h2 F$ R
set neighbor-total 07 N' w/ V  s- b
set trade-times-total 0( p  @9 r2 f7 F* ^( J
set trade-money-total 0
6 K" z9 A  X6 C3 K) h6 S' oset customer nobody% m; a+ U& ^7 X* B" C! P# |1 U
set credibility-all n-values people [creat-credibility]2 p6 o0 \" }: J5 s/ G
set credibility n-values people [-1]- t8 e2 O2 _" x5 ~; C' v2 e  q" ?
get-color
" T& [7 S. p$ \% p( y8 Y( f7 U/ x  T5 g
& F, h" v, B2 @/ N2 C! O* `$ N- ^3 o
end3 Q3 H# G1 d3 W" H6 g# `
: h5 v. _; s+ g  r2 v, ]
to-report creat-credibility# i, e. \% c* z$ x5 b8 e
report n-values people [0.5]
' X: O: P# X6 z; h+ `' Bend
4 C0 r6 s# V! w# ^* K3 `$ M
( Z9 Y# J4 U! @6 W! Ato setup-plots6 U' v+ ~! U' q! e" N! c

! v6 {) h) F1 U4 M0 Yset xmax 30

& ?7 G$ l) n1 j% o7 f) w
5 t; U( ~, r8 V8 B3 H/ c" jset ymax 1.0

6 I6 w. V4 J4 i0 j3 }4 E+ K* {9 y8 r8 c
clear-all-plots
" r! H: l# ~7 r/ I" B0 s0 T3 g) l

. g- P8 i( D) d" \8 X2 Q- @/ Lsetup-plot1

, ?0 _' c0 }8 Y3 i+ L) [5 \9 ^
' D: F2 g4 P# C0 e& t- bsetup-plot2

; e; H9 r4 w7 M. V) u/ k/ A
  ~. q% Y8 B' D8 p* J' isetup-plot3

  [2 C- Y5 a& z) r- c$ x+ E. X- pend
% i: S* U: W! n# m- h. ~, K/ {8 B
) S4 W1 j4 _. T3 x0 Q;;run time procedures
( {0 p) o8 i4 o0 Z- m7 o6 l9 s  A
) _: |, B; G4 |" I3 Wto go
! c: A: T+ `. L( d
4 g! @* Y$ @( W1 s8 i. u" Aask turtles [do-business]

& n) d+ k) s1 T& K* Yend5 \7 f# Z) @! d" |$ k

9 a/ e! z9 P8 Q0 j( w  D3 Ito do-business , b1 I1 Z5 |% |
; p" U: D9 n! l
8 f- Y5 m& S2 V9 X( y  h0 g
rt random 360

! K2 }* J5 [7 f& v. b- V
- o2 Y1 z0 c  _& t: ]5 ]% Yfd 1

1 p* f' q  X: o. L1 G
$ b/ M0 J! \1 _ifelse(other turtles-here != nobody)[

( X4 `, I' d4 F: y) w+ Q- L+ x7 P
set customer one-of other turtles-here
" g% b! o5 H& c% g: r# ~, `

. ]3 f) N3 z% l# E;; set [customer] of customer myself

' l. ?5 _! S6 ?# P/ w: f
& J, |/ m3 v( P- pset [trade-record-one] of self item (([who] of customer) - 1)9 a* R9 S3 O' _3 Z9 A$ v
[trade-record-all]of self
" C5 F0 H5 {( M8 o;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 G3 c4 U: [3 s& L2 ^" `1 Y
7 T+ g  ~, w8 R# j. \8 x
set [trade-record-one] of customer item (([who] of self) - 1)
5 E) W( g5 E! {5 Z[trade-record-all]of customer

: y+ }3 g$ p! L
4 m. m  d& {! }1 Fset [trade-record-one-len] of self length [trade-record-one] of self

9 g$ a" t. L. @
% T8 v: j* A# C1 N  _6 d+ r) X7 _# Uset trade-record-current( list (timer) (random money-upper-limit))

/ n1 B" E0 B  a" `
0 v+ t) o# T6 P  c$ pask self [do-trust]
" Y) F& U, e( n' u" v5 J;;
先求ij的信任度
  B& m% V( D2 J, \( p0 e5 E6 T) N, s" Y  N0 _4 E
if ([trust-ok] of self)
: z" n+ _5 m5 W. A/ l+ u;;
根据ij的信任度来决定是否与j进行交易[' ^# ]: z, s( c; y; L$ D; ?
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself" A2 D" o8 i/ O4 s
9 d" y0 T7 ~& A% ^9 \; y
[
2 O) C# @) s, K8 ^
* B' A1 J0 |) [6 q& s0 Z
do-trade

# f' f( @' x! d' E2 P# d
' [( o# d* q2 L; N; x( ?update-credibility-ijl

8 i& l- Q& {9 N3 ]: k0 I  U% a) J# \7 z( l) P, q7 ?1 v
update-credibility-list" D, H" K, Z: `9 j1 b

9 t  W2 Q  v# K$ o) h# h! K) E% H5 C8 Z: v$ k) R. ]' u! V4 s5 j8 w' s# @
update-global-reputation-list
0 Q. M& t; \3 D  ^! p. c
7 R+ m3 h" h5 J+ Q, R( l+ E
poll-class
8 q  M) j! |4 x: I* a
3 H% x/ s: j! k5 K
get-color
5 C7 W0 e: `- z) l
4 ]# }6 k1 a$ s/ c) q# H
]]+ I: r( K' p, s8 D. H8 w1 D. ]

% h9 j  W7 Y  k6 l( y! d;;
如果所得的信任度满足条件,则进行交易0 Z2 I- X! K* s" e" X' H5 A* P. {& D% _

/ s9 K! S1 H$ y( w8 b. @2 A[

1 \9 C' G, \  k3 U( e( Q5 G( }# a+ Q9 ~4 {" J. G. g0 z- ~
rt random 360

) m9 U. L  Y1 X3 |( q) W5 Z
" e0 i# K; w8 c$ `2 [  T. Bfd 1

  K8 d, y  ?9 H! s5 y" ?
. O1 Q) I( x1 G- c' r]

& v2 |5 U  f: D9 s; s# N
: U( {' G7 Y9 \% v+ s6 Lend

0 V# j! v% ]* j; r- ?% G$ O2 |3 J( X2 a3 x; \6 C( H& c
to do-trust : r7 r8 d! W1 ]7 [) \/ ]6 e8 ]  E
set trust-ok False
) P0 n! R1 a' K; v& ^  l6 Q& Y
* l2 S# H8 p, P0 K5 A

7 Z0 j6 T& n, R, klet max-trade-times 0& g. C6 w% I/ d7 K
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 d$ J+ n' f. X+ A( Llet max-trade-money 0
7 l2 T5 ?# e: W& `foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]6 t2 X; o4 I1 s/ k! w3 {' D* }
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))' ^# c' [" |9 U7 b

7 a$ q! R5 _, Z& A5 A0 ]

5 [8 L5 }& C1 U9 Zget-global-proportion% b; \$ ?, V# U% U( f- l% ?
let trust-value3 E$ W5 r  A* L: p; [
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)
! F" `. X# |$ |) q* ]: M
if(trust-value > trade-trust-value)
0 d7 M& A# G6 t; l* M' C$ M[set trust-ok true]" q: Z/ ^/ ?# I
end4 {+ k8 C( \4 W1 l3 G9 n9 H) L0 _
5 m8 z% Q. |( c( F
to get-global-proportion
$ w5 Z  c9 @/ Y' Cifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)+ D5 n7 [# {6 I9 f
[set global-proportion 0]6 y. U6 J- I' e' g3 u# }9 v( ]
[let i 0
& I) E7 Z/ I! Zlet sum-money 0
# ?3 J6 H% c" _1 v5 ~while[ i < people]
2 t  \% L* i% [, W! x4 u[
9 L; t3 v, t  C3 j7 U! W+ e/ Rif( length (item i/ z: L2 u7 I+ m$ g, `: S& k
[trade-record-all] of customer) > 3 )
: U4 R1 y5 `6 F' H
[
7 _% N7 K, q4 p: t0 G, Nset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
1 n2 n* }# D8 x! Q9 l$ G]7 J3 m& N  H8 B
]7 `* y5 v. U9 K3 F8 z
let j 0
7 a1 R! [9 h" W. {* E" q" olet note 0" n  f" i% {. m3 _
while[ j < people]* t+ u1 I7 h3 t3 Q) s; K
[) x! `* P8 u- w
if( length (item i
! _0 m6 o9 @+ N+ h[trade-record-all] of customer) > 3 )
0 P; i4 w; F8 X& r/ G4 B
[1 E6 D3 V  y- q' W2 o
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
( T# h1 b) N5 g0 y0 X4 [[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]/ ^" W9 T% e0 N. N$ ?* W, O* D9 ~
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]: {( L( N* O& g, f
]
5 Q& Q( S- K* s$ G]
0 Y5 ^4 M- B3 C# u6 [( W6 lset global-proportion note
$ r+ v( `. S$ U]; F2 R# O# z' [4 ]
end* @$ C0 m+ ^0 a6 G1 {% M" T5 Y" {

6 O' p+ P6 {( R, p+ ?to do-trade3 t1 y8 x7 A# Y0 u; i  I) F- m9 t
;;
这个过程实际上是给双方作出评价的过程
5 X, U. p1 U4 \8 I& Vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 N, S, O$ ^- m5 ?/ l' m
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
" \9 O6 Z) c! v! r8 J! D# Dset trade-record-current lput(timer) trade-record-current
3 C' ?1 Y; g) y6 z  f8 }3 d  s;;
评价时间/ H4 ~: j7 W) g2 t9 j
ask myself [4 j4 x( a8 p2 C
update-local-reputation+ O8 h' o+ O- G  C4 c1 |
set trade-record-current lput([local-reputation] of myself) trade-record-current! M, W6 S- R. _! w/ N
]
- a  s! {0 }- H- [/ Z2 wset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ d& q% ]  K1 D+ ~& A* K2 R7 @
;;
将此次交易的记录加入到trade-record-one
1 m  g; t/ c* I6 g* Y% Dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)3 _( n) _3 A4 Z6 k2 z" ?
let note (item 2 trade-record-current )# b; H2 k5 M; f$ f" Q' ~3 ~6 {
set trade-record-current
7 n; B# i, t$ E4 J: d(replace-item 2 trade-record-current (item 3 trade-record-current))

. D: ]1 p6 }' N/ V; Q) O8 fset trade-record-current
) g+ j( c5 F( E7 R& A/ t(replace-item 3 trade-record-current note)7 Q9 V8 p6 \$ e4 {* C& U( D: T9 _
( [' m! [6 H; ~. G2 V

) U3 u$ H7 x) |8 L( _6 nask customer [% g2 i- q+ D& y; g; I8 l* ?! o) @# R
update-local-reputation6 V/ q, r+ Z: |0 _  f
set trade-record-current
; _2 {& o9 n: y& k(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 X: U1 b3 A; n/ e]$ h: e/ r" L8 D/ o6 ^& e

+ I  A$ b& E6 F, T4 ]; h

" [( ?# F5 h# m/ @- Wset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- V9 p; F( k4 c# R/ |  p* i. `
' {7 ~- M" C( L6 R. y
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
) I$ n/ F5 o9 R# v( i1 J. E' S;;
将此次交易的记录加入到customertrade-record-all/ f9 s3 C1 q. q+ ~8 x" ~5 N- N
end* I8 V' R( o' n6 s9 Y$ l; ^

$ s  Z: F2 T; W* k! c- |to update-local-reputation: `* P5 f# k3 ^) l3 {+ G; V
set [trade-record-one-len] of myself length [trade-record-one] of myself
4 @2 h9 q8 f* {" f' X+ A' y$ i. x% {! Y

, b, R! p' f6 X; T' |+ Q* L0 y;;if [trade-record-one-len] of myself > 3

* d- D. V9 u! P; G. \  q' y2 dupdate-neighbor-total; b9 f" m' @; b4 t$ R
;;
更新邻居节点的数目,在此进行
' b8 x. _8 q6 P+ N+ P. Alet i 3! B' g- N  W5 v5 N, ?" M
let sum-time 0
* _3 }9 H- E9 e* o3 cwhile[i < [trade-record-one-len] of myself]
2 H; z" x  J+ E[2 y! f" H+ @. a
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 r/ @# D# X1 S8 O! K' l, Fset i% j9 U% }& S& ]8 ~9 q' y
( i + 1)
/ Y4 r9 c5 F! L1 W5 [
]
" A) ?! \& j- H$ n9 R. _" O- hlet j 3" P; K9 {2 e2 p) G( D
let sum-money 0
8 G7 o$ T$ X* E' p  ?: }3 gwhile[j < [trade-record-one-len] of myself]9 f, i- P) y8 p! `
[1 S) i/ _  U* p- U3 A) E
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)- b  ~7 N) s6 j3 f6 z
set j
+ q1 \1 `1 z" _0 i: W4 \( j + 1)

. U) [+ h( c* P+ x* J2 X]
; s$ x/ I/ l! D& K7 Q" Glet k 3& Z  Z- E, {+ d& [8 y8 l. M
let power 0# V: Q0 Y# {, l. H7 p- G
let local 0" ^" P8 ~4 L: s- l$ h/ C1 j3 ^. {
while [k <[trade-record-one-len] of myself]7 k, H3 I7 p2 ?( l" q
[
; }4 X7 ?6 P0 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)
. M' D% N7 z) E0 x1 Xset k (k + 1)
9 r6 F, m4 N- l]
. ~1 S9 j, K$ Mset [local-reputation] of myself (local)
# [9 o! D5 [8 `% f& Send1 w" x# e1 f! y- M1 O# R8 @2 O
6 A: [( ^* m" w0 L* ~' ~, h* A
to update-neighbor-total$ @+ U5 A! a0 r
( C1 D/ p  [) Z- i* x
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
2 \: c) K# j( f( ?6 T& ?- W  k. D0 @* T7 |( N. k+ a
  m* @* r) o' d" V' V
end- h8 d- ~4 _; i' O5 ]' ]
% V0 y! i. U. M. o7 f
to update-credibility-ijl
+ F( A  d$ {6 b3 h( A* l8 w6 W* [& T7 j$ y" V( r: @2 C
;;
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。+ o' T+ S% ~4 K9 S1 D
let l 0
& Z8 I5 V& ^) p6 L6 Gwhile[ l < people ]
1 X3 W2 S8 a& Q6 Z$ _;;
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
9 L0 F4 A$ f* ~* N( @[
" t. u: {" [( D" D5 v5 h/ ~let trade-record-one-j-l-len length item l ([trade-record-all] of customer)# i4 X3 ~9 N1 T# e, [7 m
if (trade-record-one-j-l-len > 3)3 K# [6 k  R* y5 U1 G( X
[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
( z* m* q) M& `+ i* {let i 3
9 v. I! T3 e: a8 U+ Alet sum-time 0
+ c. F% v/ S" x2 R: owhile[i < trade-record-one-len]" l) i6 m6 Y; s% Y0 O( L- b
[+ ]8 C  W9 W5 s8 y" O$ r6 S
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )( `, y; n+ x* p2 P
set i/ ]/ e: N+ i4 M8 I* P$ ~; p1 x. A
( i + 1)
, t8 k) G" ]# N2 n
]
- \! S/ u6 k1 l! s4 llet credibility-i-j-l 0/ s+ P1 s. L3 a/ o/ [" [, n- I% V6 v
;;i
评价(jjl的评价)
; f+ z2 {9 I  ^$ plet j 3
* {) M, ^, C0 I  w+ mlet k 4
" L  U. c. P/ w/ T5 s# y- M6 `2 twhile[j < trade-record-one-len]9 j) `2 S2 Q) f' _! E: G: h8 r8 \# v0 v
[7 y8 m( G. e# B9 U0 \- I! J& }) n* n0 P0 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  t) I. [/ L5 ~8 E
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)  W4 V( [6 D3 y/ q" [) ~
set j
3 f" @3 u6 F) ~& i7 n$ h( j + 1)
8 \% V( ]) ~3 I
]2 O8 A+ A- {& b) y
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 ))1 U' X$ |, W- G1 q
7 g" D- I1 B; m) v+ E0 \2 p

* Q. f+ U- \. flet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))6 f# P) U1 |1 f. v' o3 s& Y  s
;;
及时更新il的评价质量的评价0 M+ A1 d! w) l. r+ J4 \
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]8 q. F. r5 V/ [7 f3 d' n
set l (l + 1)* N& w/ ]) F/ l& K4 _; a( i; I+ W
]4 L1 z. L6 y: t
end
6 i2 ?' ~2 j5 ^- `. B
2 l1 Q1 ~& P' N) d' P8 G+ j" ~to update-credibility-list
* t% |. @2 g' W* rlet i 0
  Z1 |7 Y5 E3 lwhile[i < people]
3 q* u( B& O/ Y# [* ~6 W[6 j6 Z+ ?  L, t1 G3 P8 D4 C; @; T% L
let j 05 Q& R4 ^; y! ]
let note 0% Q- n& Y1 `$ G, o1 J, r$ E2 e
let k 0
$ J3 _' e6 h% T0 i0 p;;
计作出过评价的邻居节点的数目
* ]" r  e4 @+ K7 ewhile[j < people]2 I# j8 k& f- n
[9 p2 b9 n% h4 e: g9 `+ ~9 Q$ z
if (item j( [credibility] of turtle (i + 1)) != -1)
' W% g; n5 }! M- B& v! w) @;;
判断是否给本turtle的评价质量做出过评价的节点
7 E1 N% J2 d7 s( {6 p- \3 b[set note (note + item j ([credibility]of turtle (i + 1)))
3 [9 n5 l- i  c) L1 D* X;;*(exp (-(people - 2)))/(people - 2))]
% Y, a" f. G* j+ u2 K
set k (k + 1)
" n3 s9 H9 O' l$ Y7 h' c/ |' [' Z' x]+ y9 @, ]& Y6 s( L1 W
set j (j + 1)8 m& E0 o9 p( E
]
9 N0 P( y7 t7 {  s' yset note (note *(exp (- (1 / k)))/ k)
& y* L; |/ o2 w8 O* Cset credibility-list (replace-item i credibility-list note)
3 l1 G- [7 _$ F( E' D, J% oset i (i + 1)
4 T, c% A$ y& V+ Y]
1 c/ F, q8 ^  d5 C; ~end2 \/ u- ~7 B7 C9 q4 J: I- |$ b% M6 ^
$ }) D# F3 u' [% L
to update-global-reputation-list
( S+ @7 O2 Y# s, U  ilet j 0) H6 D7 j8 P$ W/ s% P& p7 g* b
while[j < people]
  b6 C4 |4 I. g4 `$ o' d" f7 G[$ z5 r! w* c) A" m& I
let new 0
6 p3 Y+ n2 D. y  n3 L5 e;;
暂存新的一个全局声誉. _: i& g9 N: }1 M. _9 j
let i 0( ^7 M8 u; ?( q/ [$ J
let sum-money 0; c5 C4 N7 o4 N/ m: W" C
let credibility-money 0
, D  [4 e8 j0 t/ N( _; Nwhile [i < people]
& o) J3 x; ~0 q( ?[
8 |! s( q2 J) B8 Aset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
0 ?5 g/ g: V/ Mset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))8 ~' g, J9 G, J, y0 Q3 G
set i (i + 1)
7 ]9 l: S5 q" ~; C]6 n( ?3 x' t) o1 N3 G! E  P
let k 0$ I: h- w( {" b, T- Z
let new1 0
- i# Z0 D5 f8 |0 |7 L! qwhile [k < people]! O: V$ ]  g) F" `# E6 g0 n
[: N# w" D$ m9 @2 a5 l3 A1 |
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)
9 q% d9 _* J$ ?& V& Y9 F+ p5 Dset k (k + 1)
+ b4 e: U0 L0 v' e( I: E0 x. ?9 U- @]
8 X* I. C6 @9 y0 Cset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) - I3 R* J  q5 A1 c# V0 Y
set global-reputation-list (replace-item j global-reputation-list new)
/ B' z' y7 N" e% W- s8 i+ Vset j (j + 1)
6 z9 f4 m) t6 ^1 i! t: r* b7 H]& f, d! {: J- Y1 C5 U* Q4 l5 y
end
4 _; V: _- L% g% k1 C) B# f5 P. ]4 l* i; [% @  ~0 V+ ~; C

7 W: f  I! v. N% N: F( I% @
; }4 s" `. C  c& A4 tto get-color
1 U& M) u" g8 e& V4 y# k! K- z5 Z- |$ ~+ o) o+ }; n
set color blue
& D- ]+ X2 t0 Y
end2 S+ o2 I# B; Y2 t2 h4 o, g5 u
/ H3 A4 R8 Y9 d- }- i
to poll-class
% l' T8 v/ h- Z$ \end
1 i2 Q# p4 N6 L+ ?+ j
/ y% U, |! b$ I" H$ vto setup-plot16 r" R7 ~- o1 Z% z+ A* o& ~" W

$ K+ C2 _) ~2 V1 {& n% T9 Gset-current-plot "Trends-of-Local-reputation"

/ B* X  M( b1 o7 e4 @; R7 w( B; L- ?. u8 n
set-plot-x-range 0 xmax

# c# ]+ c; ~& {1 P! N9 |! J  I1 R8 s8 R& u
set-plot-y-range 0.0 ymax
+ a  M  W1 f: t7 V$ Z, W" P
end
3 Q4 w: v7 r: s/ V  ]
- m' a7 j" j! @to setup-plot2! o% I. a; T' ^% L! y) F
! r2 R0 f+ C4 h+ n1 e) h
set-current-plot "Trends-of-global-reputation"

  K) n( n7 [2 I' o/ x3 T% z' n& V
$ R9 ^8 x6 {; P/ n9 {* sset-plot-x-range 0 xmax
' ^; ^5 P( S; Q

' u1 L' v- i0 _: e6 \set-plot-y-range 0.0 ymax
) }  F* P- I- F' ~% N- F( N3 e0 v
end
0 y. w7 F  E% f9 U
, P, z" q6 Q$ Ito setup-plot3$ |5 B! J: U0 E1 V7 m. L: O

& ~/ b) D% C( a( @0 ~set-current-plot "Trends-of-credibility"

9 G2 Q& s1 M' y
% L- N! y* t2 h1 rset-plot-x-range 0 xmax
9 y& k3 m5 `, A

4 H$ h' N5 u+ z- R, b7 Nset-plot-y-range 0.0 ymax

6 Z* y/ ]6 D4 |1 h, vend' X  {; o) ~1 S

# t$ k2 b) c  t4 s! L' g; h  Y$ Lto do-plots
/ s( ?1 ~! L0 |4 D5 a# g5 N* Kset-current-plot "Trends-of-Local-reputation"
" I5 c1 O. K6 n& Pset-current-plot-pen "Honest service"# L5 \' {9 F/ Q
end/ q% U) H: I! M/ R* S( k

4 X& V1 ~9 o5 v0 G( z! G( t[ 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.3 q+ f6 a+ ^, E! k5 B$ H6 {" A
1 v" @; M5 E3 I8 F% M  n
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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