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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:
& u' K' ?) Y3 \8 B  }" x2 B/ Wto do-business # r) i; B/ ?+ b
rt random 360
2 x& z9 H% G0 L9 D! [! Q fd 1. x& e# N  \+ V( l( J4 p) h' L: z
ifelse(other turtles-here != nobody)[" }3 m! i1 O7 z7 S
   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.
+ l! O- C  n3 @. r+ L. \4 q   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ; Q2 P  j8 s* i/ k
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
. ^3 X" Y  S2 \   set [trade-record-one-len] of self length [trade-record-one] of self6 y& Q/ X: P; g
   set trade-record-current( list (timer) (random money-upper-limit))
. h6 w( J# a7 b% w/ \' t
( `, d. p0 S# D$ x, Y' E问题的提示如下:
8 }! D4 L7 Y0 O9 w  E
" _! p. G- x# Q  o7 r+ Kerror while turtle 50 running OF in procedure DO-BUSINESS6 h% |& m1 s2 h0 U: O" e
  called by procedure GO1 x, o  T. t$ R- g7 g' H
OF expected input to be a turtle agentset or turtle but got NOBODY instead.. f5 n! e& |) E  Y( I/ S. Y! {7 r  ?
(halted running of go)! J: r% `, f/ k7 Q% l& ]+ r/ C

  a2 G: [  w9 Y2 T5 k7 ?9 h; v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~~! u, ^# R  p2 E1 G* 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
" X% C6 h! X5 V4 \3 Y& Cglobals[
1 `+ C) s; a' B0 Dxmax
2 H  X6 p# E& Tymax
+ [& G3 w, w0 aglobal-reputation-list
) `. p4 v( R( _# L2 K9 ?, F0 |+ ^3 N% j' ^- i( T
;;
每一个turtle的全局声誉都存在此LIST
  ~) H0 X7 K' Y/ ~4 \credibility-list
& a* y- z. Z  U: L+ A: R" Y;;
每一个turtle的评价可信度4 O1 a- r( ~4 |  o6 |6 G+ q4 t
honest-service
& s! @0 F& i+ H+ o( r! S. [4 Qunhonest-service/ U- M- X. j) E+ h. G
oscillation7 v) G5 C, P) Z$ n8 |3 B
rand-dynamic
6 w$ b' \* H8 W- X1 m]
* \! k4 X- S' \4 J% L
) p* m  W4 K4 L# gturtles-own[! h, u* V+ R* R/ ]6 ~) \
trade-record-all- s& d$ e4 m6 A8 ^: x% J' A
;;a list of lists,
trade-record-one组成* y" D7 ?% m, P; p% A
trade-record-one
/ P0 [5 _/ @7 C) P, f* g2 F- |;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
5 e. Y1 m1 W6 U  c
* R3 q4 v7 S6 o;;[
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]]
8 X0 L& G" R( |+ D, \3 C; \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]
, Y+ g6 i4 V* f6 B3 P/ Scredibility-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list7 V# p" o; t' I7 ~. n  n# [
neighbor-total
3 E$ u  s" _1 y8 E( L9 i;;
记录该turtle的邻居节点的数目
! S; Z% d6 D5 E% V. S& _trade-time
- X& _# w# r& i6 V# P) z;;
当前发生交易的turtle的交易时间7 s- D! {* {( Q$ f( s$ j) \4 x
appraise-give6 X* K2 |8 d' t# `' N/ C1 w
;;
当前发生交易时给出的评价! l1 B5 k* N( F. e: C( F2 O
appraise-receive
8 H$ S0 G  F! Z. T/ H;;
当前发生交易时收到的评价) R3 [. H' [) \$ F5 U
appraise-time4 n( ?# R% d/ B4 N+ O
;;
当前发生交易时的评价时间! F+ W& R, e5 `  W5 o% ?6 h
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
- v: N* O$ ]8 Dtrade-times-total/ u. j" Q7 e0 M. E
;;
与当前turtle的交易总次数+ M; A! W- }! H! g# w. x% j
trade-money-total
- x: J8 u2 \1 j;;
与当前turtle的交易总金额
* b: J+ }, b% F5 w* ilocal-reputation
. U% D) Z8 R( ]7 Hglobal-reputation
" N7 a0 f; g( Z( h, ^credibility( \+ D' ^* T' s6 ^
;;
评价可信度,每次交易后都需要更新
& b4 A0 z- r! i0 A+ N/ c: ycredibility-all0 {% z7 s2 h; k( ?! Q' w  M
;;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
) G/ J8 p  }, U0 Q* h0 l, A$ s! j! n6 _' W4 A3 g/ d( A% r
;;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
9 ?: _$ R& \9 ]( R* N( zcredibility-one! q) e# {  V. Y. i) X% K# L$ B  ?
;;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; a& W: N* ?7 K4 L$ _6 {; ?
global-proportion
. p$ d1 e  m, x5 Q9 A) D9 R8 _3 M. Acustomer
, d2 I. P) F6 A5 xcustomer-no
8 S$ C4 N0 o( f2 R* F2 [0 J0 Y1 }trust-ok$ f& p: e" ]" T8 l3 f- h
trade-record-one-len;;trade-record-one的长度
; a* p5 s1 o( n2 m& X* t]  a! b6 l: ?5 f$ R

8 F; h% R. O2 J;;setup procedure9 U0 H- u6 {+ b! c# W

5 G+ Q* o6 ^$ h4 sto setup8 ]7 V3 e% E( r$ Q

) b/ _' e3 G5 }5 jca

7 c: ~0 k2 `* y4 n  R0 h% D! J8 `2 w2 n' {* U: o0 R2 \8 `
initialize-settings

: g" D4 x% }) G  }( y, q/ W
1 R% ?+ X( b# Qcrt people [setup-turtles]

  [( W6 r  v1 V2 |% d: ]
) b+ b+ i# a% qreset-timer

6 O  x4 G; s2 w+ A* X# Y( @+ g/ @) ]  E( o
poll-class

+ s+ D% R2 J/ N+ H6 E
* R& f3 [; I; Y$ g/ {' j6 V7 Bsetup-plots

- i; Z" E( w4 t2 k% b; p) J' U( e' Y# P
do-plots

4 z4 L- k% y. Q7 A" J: v/ [6 iend0 E+ Z; ?3 s5 z) T' T3 \
: x0 _7 S$ C& f" x4 S. E- T$ o
to initialize-settings
( Y$ Z# m2 S( A/ s' A* `5 q
9 R" W$ }# ~; j# u+ Kset global-reputation-list []

& S+ D) R. {% H4 `' ]) A& e
! ^! e0 w+ c( A9 T& H% G1 v, |set credibility-list n-values people [0.5]
& O3 V3 `+ y9 G0 \3 @. _3 J
5 R' B# z) z, y+ y+ b2 R  J3 c
set honest-service 0
" g" B% `+ w* W$ _1 Q+ a
3 }! U! `. b4 `& n, K
set unhonest-service 0

; X- t" N& Y9 z8 J/ {5 r& ]* t
1 [: M. M0 a% }$ iset oscillation 0

* H, j/ j! m) o8 |3 Y: i
9 Z. L9 q. E. s4 _' dset rand-dynamic 0
% @3 e; \8 f3 L2 Y8 o3 ^
end! L* Z2 V6 Y  [$ I9 Y
, a' {3 y/ _; _
to setup-turtles
% E/ M4 E- ^% ]) L: X7 u- tset shape "person"' Y" C/ A6 W: G* ~. c
setxy random-xcor random-ycor) @/ Z1 ~+ n5 M9 V- f# @
set trade-record-one []0 M8 O& q1 ^5 D6 N  o

6 M$ v5 z. @2 Jset trade-record-all n-values people [(list (? + 1) 0 0)]
0 T, M# r& @1 |; X$ h: p+ J

9 x8 z# Q; {9 g& B% eset trade-record-current []* U. x+ p5 {. c$ g5 G9 b2 c
set credibility-receive []
4 y; g, k1 {+ y# h+ E& fset local-reputation 0.5
' l5 i3 u) J- |3 }set neighbor-total 0
$ b" @' @5 m$ F0 ?& Yset trade-times-total 0
, E+ [. i: H" |$ J; Wset trade-money-total 0
$ H* V7 ?9 M  x+ L' ]) q, M, ~set customer nobody' A- z. N$ H1 o! e, W  S+ R3 `  H" |
set credibility-all n-values people [creat-credibility]1 H& }$ ~! y# ?& z
set credibility n-values people [-1]% ^( |9 o( m1 {5 B0 I$ \! b2 W
get-color
# i5 ~, D, c# A9 [1 m
1 Y2 ^) Y+ `& n. P: X) P( O
end# [% q% p5 R- P8 h$ c; ^

5 n% g# n, K. }to-report creat-credibility/ x1 N2 u  R2 D2 e# ^4 [+ X
report n-values people [0.5]7 D) p: u9 w- [7 T
end2 d- s$ i5 Z. M0 t8 P

0 a6 ?, ]* {/ hto setup-plots2 w, ]9 a3 I- ~6 A
2 c" ]# Y+ V% ~; N. j. B
set xmax 30
% N, w' N' a4 Y$ F/ s, ~4 j- N
- b( D6 k2 A! k# f: Q
set ymax 1.0

! E$ Q, L+ R- ?3 Q; n& V* g* ]) ?; p0 z
clear-all-plots
0 l1 S7 O3 [2 `6 H

. l; p7 }; ~. w. N' p$ Nsetup-plot1
5 {4 _" o$ O+ C+ ~5 {/ O) V

( A, w4 h' S4 m- ?, L, e& Csetup-plot2

, V1 E' o$ K1 z. a
- J' Z" x- p( G2 wsetup-plot3
9 b3 }+ D8 f. h  c: C% `
end
5 w2 g6 I) S# f5 o8 l) t- E% [1 H( @$ r' @5 X  j" Y
;;run time procedures
0 z- q- p9 Y% k8 t. q, K3 J/ o+ J5 q  d2 K& L( N- ?
to go
7 z* W3 `$ H& t5 m& a3 m; q3 C0 m7 {( S, e  c: E9 ^
ask turtles [do-business]

# G% ^. X0 v4 I7 z$ Pend" i6 J9 G1 G0 C$ j8 E
( C% s7 ?7 |4 D' |* q. v3 c+ c/ ^! k
to do-business
: A, i- S8 k! A' T+ Q
& N7 w  J3 J9 B/ Q" {! x  f: h

) m2 g& Y& x* O. t' P0 j0 S: _rt random 360

& X/ f# n7 [9 ^6 w: G; w1 ^0 b8 b% M9 j& n; v* _
fd 1
) b+ Y* T  e) r3 g* d6 o

7 T7 @4 f5 I% r: O" uifelse(other turtles-here != nobody)[

; G9 X" D3 v: }0 @, c; x5 T0 ~4 {+ y0 y( o
set customer one-of other turtles-here
5 J, V% {: y/ f( _* }1 ?# I( d
7 B) Q( J, Y/ y, X: J2 V" O
;; set [customer] of customer myself

  h+ q/ u# }, M' M% |6 _
# q) N% H: j# P& U$ aset [trade-record-one] of self item (([who] of customer) - 1)* j3 g0 \( ~: J
[trade-record-all]of self
& h* R9 @# F: L% i/ o9 M7 ?6 H5 U;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 c8 J7 A' N. e: j9 [

3 f  H9 [! ^; Bset [trade-record-one] of customer item (([who] of self) - 1)
. J% v9 {4 r2 J' Y, B1 T[trade-record-all]of customer
& o6 l* N; s- O, z9 o
: R$ d( v0 u5 @  H8 H% T
set [trade-record-one-len] of self length [trade-record-one] of self
# r, v& Z# O+ r7 ]* l+ r4 @. P" o

: O0 q1 w- U- p, `1 t1 aset trade-record-current( list (timer) (random money-upper-limit))

6 ^* z3 k5 g" j# g" b; ^' u
( O# y" E5 v+ V8 W; Oask self [do-trust]
- b5 [+ O, w3 i# g1 W9 t4 D;;
先求ij的信任度
* ?2 s( t1 ^3 l5 f+ R$ e# a- N5 D' j. @
if ([trust-ok] of self)
. d) S& l2 n3 O! k;;
根据ij的信任度来决定是否与j进行交易[( f# @0 e/ \5 Z! O
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* C& f4 r) u+ \% p
" p/ g8 J. v* _[
/ D. }+ @0 P& E. n; H/ i: ~, u
, H& y; S0 M# F/ }7 D" k; {
do-trade
# L5 l* D) ~) g; p8 V

2 n3 @4 I1 w1 aupdate-credibility-ijl

% D: m6 E+ K; [9 h3 G0 Q. M" N
- |& d% d# N- Tupdate-credibility-list
- r% c4 E  i5 D

8 B& ~* X! q$ B) H4 B, ]( d
" ?1 C, Y2 E2 G, M7 eupdate-global-reputation-list
: }$ j! J6 E8 e" T+ @( P6 i
+ z6 r9 O+ b3 h0 G3 v
poll-class

! H6 D# E: Z7 K- c$ M; m
2 V8 D/ B; f. Z  ~6 K+ i. w/ G8 wget-color

$ l; q. i% f8 t" p) L) M! @' Q8 D/ @1 P4 c7 E: L
]]9 ]; J, T& D1 V0 G4 D' H; W

1 k8 C7 I' B  b0 H( K& x;;
如果所得的信任度满足条件,则进行交易5 j" Y' ?- `$ U" W1 Q
: ]0 Z2 Z  K; o$ L7 ]* ^6 V: a
[
3 L; Q( O9 p( ~' R8 X2 Y

% t1 Q' A3 j. t, ?& y+ i  trt random 360
- M7 u: S) t: n* c( P
5 t) Q$ l8 L; X& V& `/ l
fd 1

7 m, R. P% {+ b( ~& ^7 p. g+ d
. F9 h& k7 Q, |9 W/ Z6 H7 z]
$ t6 z0 Q; {; `  C  E
- {  Y' i( l8 X( S8 N2 f) W( y( j. d
end

' v) @, Y# M* |9 @$ v3 r  u+ c2 A! _
4 X$ C! \4 }! M( [9 a+ Oto do-trust
2 a/ R2 M3 t1 z0 Mset trust-ok False
9 u/ K* ~5 d6 L4 _$ i; k
+ ~3 ~7 [0 K" n. V/ Z
: O+ C, T* w0 q! f; D) i
let max-trade-times 0
5 z% e9 Z$ y8 i. m- y3 O) Xforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
$ q# f9 k0 z) X& ulet max-trade-money 07 o5 W4 F/ [# Z$ K9 O
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
* I$ _; r$ O: s  H7 }3 blet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))4 J9 B4 ~# E& B6 e# X  w0 ~

5 s  N! e# h! R

- l3 ~3 [3 v* }7 p* d1 z( L! Rget-global-proportion* s8 N% Z% o$ x- Q8 S5 }
let trust-value6 ^# {. s4 _$ l7 i+ o# e  ]
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)

+ H' |" h2 k5 Y6 _- ^. rif(trust-value > trade-trust-value)
  `5 n0 ?3 ~7 P& l[set trust-ok true]
6 P6 _) ~5 |: a/ ~3 hend1 F: i: m* `$ W( b( C

6 H2 R* Q! |( f9 a+ [to get-global-proportion, p/ ~0 m0 M, D1 D6 J
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3), k2 U) v) W0 _0 A
[set global-proportion 0]7 }8 H" C) \9 N, c. @3 @( z% ]
[let i 0
9 Y. U0 t9 Z/ P; }% ?let sum-money 0
+ `' Z4 |" [  }& a4 \while[ i < people]
4 E! R: y! S. }; v- G+ k' y% |% H[; Q/ W- h7 V; p" m" w
if( length (item i
' t% H% m! Q" i) m2 F! x[trade-record-all] of customer) > 3 )
0 y( X; d8 e% j: [7 ]: g. I2 G' f, N
[
) J- a* X7 X& p9 |9 _set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
; D4 ^; N, L2 k/ d) h- _$ q5 s]
( ]/ N5 i; Y; ~. D/ K& a( E]
4 C  g: L4 r* A, `+ D9 Slet j 0, q  a- c6 v) A5 R
let note 0
, m' n! q1 z: v- k  z! ]* Owhile[ j < people]
  [/ T8 z6 |$ R, U9 L: y[; ~1 r0 B, @& X, T
if( length (item i
9 F/ x  R& P; I9 `[trade-record-all] of customer) > 3 )

" B$ o4 ^9 v3 d' A7 Z[
  G% z3 {1 j% v* J$ k2 uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
% Z: v# f0 ]) ]$ w8 p" @$ @[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]$ J) a& R4 @% U1 u1 z6 J
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]  K  [+ x0 t0 r( H6 M- F6 M( H( a: e
]
: G6 i% c1 e0 b7 K]
- G" _+ v( y+ R" ?+ Mset global-proportion note& n- V# {" n6 x# t. F( j
]
2 ]/ e+ H$ F7 R, ]end' w; n0 U0 g* A% g% O8 N$ A7 V8 }2 z  a

0 J8 Q; V: E" R1 Y  mto do-trade; E7 k; w- q. k
;;
这个过程实际上是给双方作出评价的过程
$ J8 \5 L! ~& b, C# u4 |3 pset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
0 t! m; U7 ^' f# H3 G( I& iset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
; a- Y- z0 s7 t6 dset trade-record-current lput(timer) trade-record-current* y- m& W: _3 N* M% J9 V" D1 j
;;
评价时间
. _. w7 N0 d/ E7 O- D/ nask myself [
' y1 q6 Y0 k3 }1 B# Yupdate-local-reputation
: c/ H$ d  ^3 ?+ S: i& @1 cset trade-record-current lput([local-reputation] of myself) trade-record-current. g* E4 @9 x* d0 L2 H- {" e% ?
]
; b* V9 V8 \" \# V! y2 mset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
6 R& D, K5 F7 n1 B;;
将此次交易的记录加入到trade-record-one
4 E5 K3 x9 d: z" T; }set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)5 X; f; l* |# @, a6 S6 n9 j
let note (item 2 trade-record-current )- k6 Z7 S7 E1 \  U% k0 C, F+ _
set trade-record-current- N* t- {' c3 k0 f2 q
(replace-item 2 trade-record-current (item 3 trade-record-current))
" o: L' ]( b' ^/ K. Q
set trade-record-current5 C' ?/ C! J5 K* u- j
(replace-item 3 trade-record-current note)
) O8 u7 {. n7 ]8 J: o0 l* w5 [; |6 G5 V+ U

: n8 W) Y7 U$ Gask customer [
+ }# Q. G; I/ z  i) k/ dupdate-local-reputation  E% Y& J$ W* Z5 T1 q5 [0 n" k
set trade-record-current$ P" N; @: l2 E+ }, N
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 H* k' X3 m; V: L- D9 Q]
( C$ y) A7 K5 z! E  |/ U6 N* s* h; P4 O1 [: L

1 i0 y6 n' |" w* z5 oset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! U* c6 V! t- q" [7 U6 t
& d4 j. K3 H. M2 p" D/ t  L
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ e. Z% P7 M, s( s1 L( y;;
将此次交易的记录加入到customertrade-record-all
, V3 @/ B3 W2 V5 F2 g4 q; bend8 h' R) k: ^$ k, Y) R( C
3 U7 _& x! d) ?4 z/ ]7 D/ x
to update-local-reputation$ q1 u! f1 O# n- @
set [trade-record-one-len] of myself length [trade-record-one] of myself9 r7 j0 t* u, n* o( @) H% s

0 h3 @. K) m4 ?1 r6 _8 q3 p. u& J$ @" @
;;if [trade-record-one-len] of myself > 3

: ?9 h' p) ]) Aupdate-neighbor-total
: p4 Z, \- Z, c. t! X) A* s6 ?6 |;;
更新邻居节点的数目,在此进行
% w; K$ b) B* R' {3 M4 J1 Hlet i 3
9 B* @- N% z/ m4 klet sum-time 0/ y. ]7 D. P/ y
while[i < [trade-record-one-len] of myself]% ?& S) I9 F! M6 j
[, j. f9 ~( I, I& _
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  w) J' l: Z% C% hset i
. c! m* @1 E# z4 x( i + 1)
' R% e6 Q7 Q/ c
]0 P4 L( f9 W" q7 d& {- e, T/ v  _+ ~
let j 3" p; V# l& ?+ X3 G/ A
let sum-money 0/ P" C) O: C( b& e0 \
while[j < [trade-record-one-len] of myself]* G4 I+ H( ~7 [2 a
[* d9 E0 P. g5 ]( y( K
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)# A' z: a! m. D* P9 [% ]
set j9 l' U8 R$ k) B/ z1 |5 T8 U6 ?) E
( j + 1)

( ]0 U6 P1 X+ G" s7 L* X, A( e) ?5 i3 K]6 `9 [* ~+ ~/ q3 l2 O" e1 G
let k 3( {; F5 R0 Y: i, J. |* O* l4 ~
let power 0/ [  B" T4 ?' G6 d) l
let local 0
' S+ M- H9 r! q, c# L6 gwhile [k <[trade-record-one-len] of myself]
0 P! B; a% i( X" ?, r' \7 J; f; z[
/ [8 b! l, k% s; w4 G7 N3 \% Hset 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) % e  z6 \) I; y, m
set k (k + 1)
- u2 T% I  y0 X% c) w1 Y, c/ B]3 f- O8 I6 b3 D2 j* `9 p
set [local-reputation] of myself (local)" h, g; H4 H/ h$ W8 V' D5 n3 E
end4 }" F/ Y4 }1 V. K; t# r; a  j" Z8 O  p

0 O/ |" l" k  F) G4 Ato update-neighbor-total
6 h, g/ E/ Y0 n7 v0 H! p6 v
$ ~, n+ \0 z. Hif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]5 f/ L% N/ w: k7 i' X% }

% L& H- J8 b- h% n5 S" J' [2 v

: D) j& T7 P2 v4 d5 send$ F0 r/ @0 f( h# C$ x( {
2 u) H; L; o8 B+ f  G
to update-credibility-ijl / _9 f- T7 p* X2 Z/ V' d7 C

* M/ y* }# A* Y0 k: j;;
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。9 G( J. Y: ?; ?* R+ F
let l 0
4 G0 O) `9 |0 F' e3 k+ N0 p* x4 t( xwhile[ l < people ]1 `% r: A$ k$ C4 J
;;
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% Z% I( g3 b5 v! u# W2 Z
[- u2 q7 w& D8 ^% X) [
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
. Y: T) J3 L, t7 u: ]. p; p' v9 z1 Wif (trade-record-one-j-l-len > 3)$ g8 Z' b# m% Q! ^& V) g
[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' x, t9 ?8 g- k! Clet i 3; _$ w. D7 l6 M
let sum-time 0
' X- C3 o9 I7 u. z! t, r( m  Pwhile[i < trade-record-one-len]
# U  i( s, {) `( X3 B; C6 s[( H9 n# x9 R. d: O& b, a& p
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )2 r% E% t3 m  A- n) d# v
set i
; V, S2 K" P/ @6 h/ n+ D( i + 1)
  \" [* l) m' w2 @* D' P
]  E* V0 ?/ k  r" i& ?$ F
let credibility-i-j-l 0
* |7 ~1 Z8 [, \. z! {;;i
评价(jjl的评价)
. m) W& ?0 C9 D( blet j 3
: U) ^6 ?/ |* f) Qlet k 40 n( w6 W% t7 g9 Y; u
while[j < trade-record-one-len]
5 |6 j! ^2 f. I; ?[# w9 F4 H6 p3 ?( l
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' v5 p+ n0 t& \, {. _5 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)- _3 Y; z3 |) a# v5 h
set j* K" Y0 N6 j( L9 }+ e: x+ O' W& e
( j + 1)

3 B! ~4 l3 e* N* u* \8 K]
& \4 S4 c: {& K4 I( h1 V! \. 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 ))- M/ s2 Q; _- [/ _
2 l, L8 v: z6 ?7 @7 J6 ^) a

8 R- e4 d. |  T, Rlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))1 {4 X5 L& v9 |0 \. ]
;;
及时更新il的评价质量的评价
( j; ?) S' y7 n4 J# S' Gset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]. F5 |+ y% ]2 q( j2 P6 J; ?6 D8 j
set l (l + 1)
: _' ?/ }. c1 u]  }6 K8 p, z7 f6 p- ~
end
6 J/ W/ }, v/ \- ]: A; ?9 @7 r; Z) R# Q) e$ h+ n! \
to update-credibility-list2 Y  f7 {: V' G, G2 W
let i 0
+ q3 m, D8 u4 e- s2 ]& B0 L2 Fwhile[i < people]
# {* i$ a- j( W$ x0 e[
) ]. e0 o! a' Q6 F& n5 L1 A3 Alet j 0
2 P& P" m- q# Q" [6 {let note 0
" j- ~% a1 ~/ H" i: i, F. nlet k 0
6 o4 o  K# b# w. ~* a;;
计作出过评价的邻居节点的数目- K; m! V5 T$ U
while[j < people]4 }5 f( B1 [% ?' ?: P( T
[
5 K2 x' l+ I+ k1 [) E& y! Bif (item j( [credibility] of turtle (i + 1)) != -1)
1 X7 f' H$ w& M6 H# W;;
判断是否给本turtle的评价质量做出过评价的节点3 {+ A6 S( ]5 _6 ~' z1 n
[set note (note + item j ([credibility]of turtle (i + 1)))- l5 E. T" L4 a% h+ I9 J; Z# d, g8 t2 B
;;*(exp (-(people - 2)))/(people - 2))]

; a9 j6 m/ h  \1 E( S9 V6 cset k (k + 1)( A& Z3 J/ i% ^) ?! M( }, b
]
5 {# X3 y1 U4 s+ t& wset j (j + 1)) }) ^) f8 f8 _& h' z1 a; a
]
$ [0 w7 t. r' z/ ^9 C3 ^set note (note *(exp (- (1 / k)))/ k)! E0 c, A1 }  L, @
set credibility-list (replace-item i credibility-list note)
" b) u  }7 l+ J% K: I" R/ P' |2 Q) r6 @set i (i + 1), L$ Z4 Y) i7 K3 V/ U5 w
]
# F' ~, ~6 j3 V4 @* o, Fend
) I  x; M% E# a9 C( P
  S6 P' l  _- c4 Dto update-global-reputation-list3 T+ P6 E0 _: t2 V7 a; r/ q
let j 0
  o  e/ e) n, bwhile[j < people]
6 @% i) o7 _8 h' R[2 F" D( h- s5 V% ]% w; i" U
let new 0
( u( c4 K: R! C( K/ ?. o' s;;
暂存新的一个全局声誉( i) w" @. Q& h4 u
let i 0
9 [) B' f# W$ }9 V% B6 ?% Z5 Alet sum-money 0
* p3 Y  P7 x- M* V* ]4 F5 [# vlet credibility-money 0
. [, @. o* p) B. `8 H% l( Rwhile [i < people]
! v: |! r' x' {[- [( B: g6 t' ^: q$ Y
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) {8 L; V9 t, k; g
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)); x: c6 H+ r. c+ W
set i (i + 1)" u8 V2 a% t, y0 v: v; J; ]& W) c3 F
]
6 j2 c( v/ U/ c7 z& [1 g" B: {let k 0' e0 {0 V+ R+ s# g. S. L3 v% A
let new1 0
( F+ k$ l* W$ {while [k < people]# w" T6 Z( G6 ]; `, u" E
[, m9 p) W$ X; x; G8 I+ R8 I( ?
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), y' m7 n9 E; B  N% s
set k (k + 1)8 U2 A" ?* A6 h) k9 ]6 a" F% m" `
]+ N) I* }1 b3 |, ^
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 4 u! p% u. K1 j
set global-reputation-list (replace-item j global-reputation-list new)
. r/ V+ T: n' i6 a' G; H8 U4 bset j (j + 1)6 |' |  _9 M# h0 M; R/ v
]
; w8 Z; H+ G0 [4 l2 l2 e% o" s+ l7 Tend. [% K: Y/ Z  [6 I) ^: a0 t
5 e  p1 _1 ^: a9 Z
4 F0 e% ?4 U, L0 C1 @( \
* t& c! f* _  o, H: a( D
to get-color
; z, g$ E- _, d3 J+ k5 J6 c- Z0 `) B' d, i2 P# J6 a( r! _9 @
set color blue

& F: q4 ^' X6 W' pend
0 A2 S. @" c7 F: O; t7 x) k. q9 K8 [  ?- P
to poll-class! I  s  O4 d' D- R5 u, M- Q9 l1 H9 _
end* B: N; w" |3 d& U  ?
7 E! N& U+ L: N5 h9 r8 g. s
to setup-plot1
; \3 l5 K# w9 H! M; j! Q! z  g8 Y8 G* j/ ~5 G
set-current-plot "Trends-of-Local-reputation"

& d" j, f- S/ K. o! M5 I
: C5 v4 j+ @5 E  K/ @8 w7 Bset-plot-x-range 0 xmax

: Y' L8 c4 r# C7 a1 E9 A
0 v: |0 a" o9 E/ ?7 Xset-plot-y-range 0.0 ymax

7 z5 E( p  `0 b" Uend; P( y0 y2 ?* ~$ J5 ?
* L; t; h+ {! o2 M- A
to setup-plot2( I, D9 M! W" Y$ Q; T1 K
$ U  C7 W/ T( p, n* G7 ~! j8 g& d
set-current-plot "Trends-of-global-reputation"
/ b1 D/ |" h) u, @
  @4 E) C1 l- q* k- A# o4 m3 D% |
set-plot-x-range 0 xmax

0 R. ^4 [8 J% C5 q# C6 s" q0 J4 A$ A3 u4 n
set-plot-y-range 0.0 ymax

& a7 M! U* S! C% P# X3 x3 Dend+ a: i* X2 l; s4 J
. z" ~+ c, Z+ j
to setup-plot3
7 O" ]5 |( J; v' E4 o" t' k4 Q! C4 l/ s
set-current-plot "Trends-of-credibility"
% u7 }( w; O: Z" c$ S3 E

* y7 V7 j; H2 o: ~8 xset-plot-x-range 0 xmax

- F& B8 O: V6 u" S% d5 s7 p5 z$ R; ~9 B. P, [* W+ K* w( I+ M
set-plot-y-range 0.0 ymax
) x* W) k4 B/ g6 }+ ^$ Z* a
end
2 K, z* }7 w6 X7 W
. f* @7 P/ I) k  E7 ?# xto do-plots* e3 }4 M+ Q, n. n
set-current-plot "Trends-of-Local-reputation", g+ h, v$ B( O3 ^
set-current-plot-pen "Honest service"
+ w3 B( Z; F; D$ d9 T5 a' v, z. eend- P+ j& O" S, F( n4 z8 A

1 P( s! {+ p- g! K[ 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.  {, H9 w: ~7 `8 h/ ^
8 v+ N) u; C- T2 ^+ h
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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