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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:
, c0 l3 q4 J, }- Z  Nto do-business ) Q: d1 V/ z. {* B: g1 T8 V7 c
rt random 360
  V% y* k2 U# i% c; Y. r1 s fd 1' o. i' ?1 e. [: _. M
ifelse(other turtles-here != nobody)[
8 L4 K7 S( E. M3 Y. {( u" b   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.
4 `) E% s6 b$ E* ~. g6 w0 [   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * J+ f( f, k/ U, E( U
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer1 ]. Z- _7 E+ y0 d
   set [trade-record-one-len] of self length [trade-record-one] of self  d3 e0 t$ _4 H( J& x: C
   set trade-record-current( list (timer) (random money-upper-limit))
6 B$ A  e1 `( O" `
* F  N) i* t5 r; }% y" a问题的提示如下:
" |* J: b% `. V* \2 d; p, q9 v$ P4 d' t
2 l; Q! ^" A) F- w( W9 Gerror while turtle 50 running OF in procedure DO-BUSINESS% q2 X4 z2 V% j4 Z5 z2 z
  called by procedure GO$ a' t9 y1 L! {" f* d
OF expected input to be a turtle agentset or turtle but got NOBODY instead.0 n; M7 T+ o) X; n# i# w0 R
(halted running of go)
' C0 `4 \+ T& M- c- Z8 d/ u/ s) U  K( \: ?7 M/ O- ^9 s
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~~7 d6 J$ {8 Y# d$ r3 D5 \
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% X3 M  e0 u3 uglobals[
- _- \! h3 z: B# a4 a$ f: H/ hxmax1 i1 z3 w# R' H5 k3 D
ymax
0 e) k0 D5 a1 f; u% ?1 Hglobal-reputation-list# |" ^0 S! R+ e: ^: |

% B- G4 x$ ?4 X1 {6 ^1 L;;
每一个turtle的全局声誉都存在此LIST
# z( w9 s4 d( y+ P- l* rcredibility-list
: ]5 s7 t2 u' A7 V;;
每一个turtle的评价可信度
! j8 g6 z1 P. {8 T+ u) E- bhonest-service
5 b. i+ b8 e! L) B. c6 gunhonest-service
, a( ^7 [( P( X9 w1 F. |& I  ioscillation5 E! F2 w( N/ W6 I% e
rand-dynamic0 `# w: X: v8 P0 ~7 _
]
# \8 p! ^1 ^7 T1 c
# e* ^' k5 ~, [3 U) a2 C8 Gturtles-own[8 k; [( i4 }( u- q1 Q
trade-record-all
. e4 j: `, u( M7 J  Q;;a list of lists,
trade-record-one组成
  V. Z( `. G0 O* \6 Wtrade-record-one( ^* O' V3 h1 s/ a$ j+ ^5 ~
;;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 r) r, s/ u; x5 a) H3 ~3 j2 J$ @* K/ F, {. U/ K: o1 {
;;[
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 C: T5 g* m- H; S9 i4 b5 Gtrade-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]0 U0 G9 p: M3 i# M
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; W7 X' }" [  J% N4 W  Q5 T$ z
neighbor-total
0 k% `5 l! i$ p, r) ];;
记录该turtle的邻居节点的数目- Y5 ~* R9 X  M8 f" e
trade-time* e- a5 C* _/ n4 C' ~3 x
;;
当前发生交易的turtle的交易时间7 c2 J% k, Z8 N2 L4 J7 i
appraise-give
4 `1 \/ {6 t8 h! v1 u;;
当前发生交易时给出的评价4 K+ W' S# L/ L4 H0 T( Q
appraise-receive) ?, `- X2 T7 ]5 H6 R# I
;;
当前发生交易时收到的评价
/ v! l$ p8 S% fappraise-time) \( s, X  T2 @5 j6 y2 q
;;
当前发生交易时的评价时间
( [. l; e3 b0 X. blocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 ]6 W* G* t) r, \" b0 Ltrade-times-total( S$ Y4 m5 C: g" p
;;
与当前turtle的交易总次数0 A3 N$ j- R' O0 U" m& {
trade-money-total% q) X2 `! Q- t* i# I# n& \% w! V
;;
与当前turtle的交易总金额
9 C6 c: J; I# ?: q1 N0 e2 Qlocal-reputation2 U! f8 K$ E, r. K( {* f
global-reputation
. a0 S1 I! O4 Z% [% t# Zcredibility# }  V) V  z6 T; P9 Y( J* E
;;
评价可信度,每次交易后都需要更新
, k1 A- e2 c3 d$ ?" s6 L2 ocredibility-all
6 l# x8 T7 X9 }5 A/ ^% e;;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4 O' f' Z( J- Z  I! Y

2 b7 r) v% n0 g& m. P+ R% s;;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$ n, O& B$ m0 p
credibility-one
6 a) y- J2 C4 H# D;;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; E2 f+ ]5 a2 s; \" o
global-proportion$ S0 O# T4 U5 _' s
customer
4 u& ^3 o% _7 j: G4 J  b$ vcustomer-no+ x9 ^: R* a" `0 T* ], s9 T" W% ?
trust-ok
) @( n, A5 m4 S8 D7 X" ]9 k  u7 Itrade-record-one-len;;trade-record-one的长度
0 ]8 }; J: [4 v& y% G. Y8 d]% P. ]0 O# Z5 i) z2 `# S0 d
9 V, r% \8 n7 X+ ~4 b" o  o
;;setup procedure
& G0 @% f* t% `1 Q, O3 \7 K; b3 C5 b5 I- p2 q( f
to setup
$ [: l, d( }; t, n  U6 w
' B$ Y2 b& i# k0 m0 z8 q& kca

$ }/ i+ F& q) y4 i2 ~9 k
- B9 @4 I. `) m9 i) xinitialize-settings

* q, i, M: ]8 ~. h$ P( x$ W) h: k. s# S
crt people [setup-turtles]
, A) B. Q! l% _+ Y) i

( C1 E2 _$ l, Lreset-timer
( \- g1 t3 @& M" i( e% C  X- p+ k( q# q
: u' S! F& K3 e% C# Z& Y; N4 {
poll-class

/ G+ R( g& d! S6 c- ^$ b; m8 x3 ]1 w! X/ D6 h
setup-plots

8 k* r+ Z; g  Y) C& E) Z  V: H+ V3 v, n" b, [
do-plots
1 u6 T; r3 h/ Z
end
: ^" D+ B. {# G- G
7 ]1 h$ s8 O3 f( \to initialize-settings5 J8 u* A0 _7 x! x3 r8 Y  |3 p

# L, ~: n( T- n' @& O7 |( l4 w) \set global-reputation-list []

2 k5 w# S, L  J4 v6 x6 D) ^+ E0 I% ~# [0 T; ]
set credibility-list n-values people [0.5]
- s  r* c- P! N2 f8 p7 }* O

1 u! i5 F' w" H8 O4 Zset honest-service 0

+ e7 U) L/ i5 F$ y& A* E- V: S1 y
; o) S" q6 J% gset unhonest-service 0
% D0 c' P& O  S; L
8 N( p& C: b3 C( r* M
set oscillation 0

4 j+ N3 z% t% p/ F7 L9 a7 {
/ x# r% Z% I* x8 [4 S" Nset rand-dynamic 0

  l- V1 E  [1 ]" I- f6 J0 cend: ]" w* O9 D+ \7 X( ?

0 s6 A, s( h( ]9 J: r! `# \to setup-turtles
3 c! x$ F0 G7 \; F7 T$ d3 Vset shape "person"
+ H/ {5 y0 ]/ S. }) x- |setxy random-xcor random-ycor
* ~) B' a& s3 s9 bset trade-record-one []
" o+ Z; T, h2 a

% M7 A; r: I( u, I& J  P3 Wset trade-record-all n-values people [(list (? + 1) 0 0)] ; u5 }4 U; W$ W3 y
% |3 d/ T% g9 s: `/ g
set trade-record-current []% Q8 ^0 j2 G- Q9 q3 g* G& y
set credibility-receive []& _. J% V3 ~+ k" g0 w
set local-reputation 0.5
: v* J4 L1 v) z3 L5 t) H/ _set neighbor-total 0
- L- Y0 P( x) o9 l! d" V$ w0 Wset trade-times-total 0
2 d% W+ B. n0 Y0 P5 r6 E  I, \set trade-money-total 01 X7 D* g; |0 I1 o
set customer nobody
% t0 K7 W  l0 j7 p% @set credibility-all n-values people [creat-credibility]
9 E9 b. F0 x2 x2 z4 G5 C7 cset credibility n-values people [-1]
+ G1 K' V0 c4 Q- n5 f/ [get-color8 \$ G1 b- V% E/ ?

9 b9 c/ B" y$ D$ }! kend% M/ Q( Y6 W  C& C; P, V  R  A0 f
5 i6 W5 `% t  r' E3 T
to-report creat-credibility% z( l$ c- V- J6 S+ d
report n-values people [0.5]
) [& C. J' c) u* Nend9 ~$ @' d# c/ q4 r: W

" H* F5 T; A8 D! `4 dto setup-plots
5 J8 j3 H& e2 x2 a" g& [# ~. A. G9 L6 X: Q" L2 w5 f
set xmax 30

8 i5 E* E! |! H5 T) p6 x4 K9 @5 l0 ~. o, o1 A6 M8 U; n5 T/ v
set ymax 1.0

1 D% i/ V6 M# m+ r3 B; z/ }
, Y! b( S; c1 o" Nclear-all-plots

& k# s' P& j0 S! t1 U# e- V3 @, @+ l. t' x0 O( f3 T# f& C
setup-plot1

6 I3 m7 e/ Y7 O2 w) L
( i# F( B& R8 E1 ]' F7 z9 Msetup-plot2
1 ~- r0 ?' l* o! N' {5 X7 l4 V6 r

* T( i. c5 K; f' Q# H% Z& l3 w* K! jsetup-plot3
7 K/ i4 Y. b0 W- y
end9 h$ O; _7 F5 L) Y
# w. Z( w4 l; l5 b
;;run time procedures
$ b2 d& s" O$ f  {4 Q9 C6 a: b* S$ m: ~
to go& R7 B" |6 Y% @
$ o$ n) @/ v: l- z) V
ask turtles [do-business]
/ X9 a, Z: ~9 o- E
end
2 o( H7 B8 f. n' P" \2 Q( e  t" r* V% }0 K+ ^8 z1 ?* I0 U
to do-business
. T+ |: G4 A1 @. \+ @! V* c

: G$ w9 T+ i3 }! d: b3 Y
8 x- I# s$ c0 G9 krt random 360

; a- I5 D& I% g7 P: W0 |& J6 j9 i' O3 \3 L1 g4 ~( U& P
fd 1

4 Z# F1 ]$ s5 t9 I2 f* v. ]' [' V1 `' Z8 b' D3 H6 T1 b
ifelse(other turtles-here != nobody)[

/ T$ \  m0 M' P3 L, W9 v
& P* f3 i) ?9 K% q* n2 V1 Yset customer one-of other turtles-here

& q# m4 J; M# p' e  g% C4 a: ?
! P) a3 G$ ^; T- i. ~' T;; set [customer] of customer myself

3 p  F9 M  M7 R0 b2 Y: v/ ]$ N" M, ]/ \$ [
set [trade-record-one] of self item (([who] of customer) - 1)
. d6 F9 l- E" u8 w$ b4 K/ Z. z[trade-record-all]of self
4 Q  e) X+ u7 j5 P3 `2 v( ^;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 q/ `! c( V8 p1 y) D; [, C  i6 h$ B
set [trade-record-one] of customer item (([who] of self) - 1)9 K+ v8 Y) w7 y7 J7 s* M6 }9 E6 H
[trade-record-all]of customer
0 {( A% {0 m  g0 T' R
9 {; ^  c8 d# N( R& N
set [trade-record-one-len] of self length [trade-record-one] of self

8 ^3 ^" [! }% b2 c% ]. E6 i) `# l% s) s
set trade-record-current( list (timer) (random money-upper-limit))

) G( V8 X  x" W  z. D" w
- m9 H8 c2 K' L% S$ W1 Bask self [do-trust]) M) i3 n0 B8 @! U4 _/ T
;;
先求ij的信任度
+ L* Y5 G- R$ Y9 X; }) f! @7 C
: F9 ~3 ?0 b+ z0 u/ H( |! Rif ([trust-ok] of self)
& z: D7 X$ u% u  p7 o;;
根据ij的信任度来决定是否与j进行交易[
  a/ |. ?8 }* L+ O( o3 ^ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself& Z1 w$ P6 i1 |, C5 b

' z8 \1 D. y/ q0 ^* F# u7 i0 ?- T[
3 K" |  ^( }* T9 K2 n
! z4 \. S; P/ H
do-trade

  [) O9 o, Q. y4 o( ]0 r1 m7 _/ `3 }- k% P
update-credibility-ijl

, x, ?. B0 ]- l' ]0 f. H, \0 L2 _* y  T7 o
update-credibility-list6 h3 R. q5 J! L7 i6 J( f+ ~

5 l  U* @: O/ P0 n8 B* H5 p! Y; g9 ~5 H5 V9 |6 d9 R$ H+ I% D
update-global-reputation-list

. X6 q1 j/ q0 {9 U
  n9 T9 ~& J, {) `* h9 Gpoll-class
8 @& p( \3 K+ h8 u6 L

( G7 h+ Y/ r$ mget-color
9 L7 P# U; Q' K+ o
: R* |* w3 C! d
]]
& w9 s. ^  x6 \, C+ X: v' r+ |
4 J  D) j1 {9 |* D;;
如果所得的信任度满足条件,则进行交易
9 X, q: d5 A6 j1 I- ?* c  e! v3 l, n! A. ]: u  {/ }$ l
[

1 |% }+ K+ M+ E( W# ?+ E
& ~9 h% ?1 F8 A. u: E# l9 art random 360

) L6 v+ @$ b5 T! u4 x5 ~; u* d
3 j7 G5 |7 O( f- bfd 1
, u* W& K$ a9 b7 M# t6 C8 _

) c% y2 i8 q, G( R]

  O' R- N& b/ G4 G( M
9 q) \8 i+ K5 o0 @2 T- g' rend

7 g9 U) l( s& E: o. ]: p; ~8 G# Y4 H; u! f  _
to do-trust ' ^- u0 k3 z: E; ~
set trust-ok False! i0 Q+ P9 W, C" `* y& G4 ^
: {. v4 W2 G! j$ o, X4 \
! |" K: {" T$ V' l6 }
let max-trade-times 05 c, h9 ?- |$ M" E) s
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
* e7 ~+ T  a- B: Glet max-trade-money 0
& M2 l9 }# t+ ~; x8 h8 Pforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
* n$ r3 d4 Q4 jlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
* m$ ]; d( @* m$ G5 p
2 @5 i2 [1 B3 Y9 ?

# V" I& P. e' h; \get-global-proportion
7 \* B) v* R) u8 t: m- |let trust-value5 }* C3 s' X: K  @! c, ?
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)
4 G# t3 j# x2 c! W) W# c
if(trust-value > trade-trust-value)
% \% ^/ Q6 M& M+ G3 m8 |: u: Q% O[set trust-ok true]
* \1 }+ b5 `/ B6 t( j9 }5 v4 y' Bend, A& z! E7 |( Z# J0 h. Z

8 d" a2 ~5 V7 @  C/ r- x9 Fto get-global-proportion6 W( ^+ e, E& P
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% F% j4 u8 F" O4 R  k/ w0 H" k0 i# G[set global-proportion 0]3 w) F! L: X( B7 N: ]
[let i 0& N9 X: Y. Y4 S4 c5 x' r5 |+ G* U& M* i
let sum-money 0
7 p2 Q* c3 b% |- l# [8 Z# `5 W. Qwhile[ i < people]  k- G( D& H* F+ J9 c
[
* P- q* {5 b6 q9 vif( length (item i
2 z9 m/ V& _. W9 a3 K( @+ ~5 l[trade-record-all] of customer) > 3 )
$ p; I" ]' l! j( ~& T, ^
[" Q! B! K. r7 d: C; p5 v% {
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))+ g1 Z1 l' C; I6 q% D. x1 b
]
. t. e. A! _* R; C: {! \; l]% a3 I% F; c2 m6 L) H
let j 07 Z# ~  M2 z4 I0 b: o2 O
let note 0
9 t+ q0 K9 Z0 b1 q% Xwhile[ j < people]
' Y, j( r* B, ~2 U3 x[6 E9 E2 {4 U1 F! }
if( length (item i
: E2 `- g: l4 f# J' v4 Y[trade-record-all] of customer) > 3 )

) M$ m$ g+ ^. e  I2 G[
( {9 ~+ Z- l# E; `ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
6 _: [8 ^+ B' `7 x) D! G/ T[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
$ ^: Y$ W2 g. h, {6 o[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
1 W+ U6 @- U1 o+ ~9 S]
  h- R% p# G7 H]
) w, |1 |5 j$ z. c) G& j1 dset global-proportion note
* N. z- r& ^+ Y6 F  M  ~/ z]: n, h2 v2 T) q8 y( M3 w
end1 m7 }; Q7 o% J" V$ n, n
) `7 u* i1 J/ G8 x
to do-trade# D6 E. T( Q6 D8 N- z
;;
这个过程实际上是给双方作出评价的过程
" E' ?. V8 m4 p+ B  d( i+ Mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价# l! u( q, a, R  K; L: _+ M) v! A
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
5 v( [( K9 i' J4 O: c$ ^9 pset trade-record-current lput(timer) trade-record-current
0 _; y/ @. G: c+ F;;
评价时间
' v8 s: ]8 |& t7 A7 C5 l5 Oask myself [
0 c! |  u+ l" j* x% u$ c3 }0 [% S. I. nupdate-local-reputation
& d- E* l7 H1 x1 d( s* t2 L4 i8 hset trade-record-current lput([local-reputation] of myself) trade-record-current& o/ d8 C3 W: _% Y
]5 |0 X& ?/ y- `, Y
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself0 @( M/ K6 _) ], X+ \. x* T' W1 o
;;
将此次交易的记录加入到trade-record-one2 u9 r6 _' [* r8 y3 ?5 R
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 S* G0 G8 X0 ?. H
let note (item 2 trade-record-current )
/ b5 u8 @4 S' x9 zset trade-record-current
  }1 ?0 Q. s4 Z: J- \: J4 T(replace-item 2 trade-record-current (item 3 trade-record-current))

, h/ V/ U# w! U3 L+ [+ P% Mset trade-record-current" F6 D  A4 B9 b: ?6 g, [. D
(replace-item 3 trade-record-current note)  d/ O3 r2 Z$ s" U. P* T
: f9 A% I0 G4 g+ P! M

1 X! \! [! r/ ^/ H" e; B# Task customer [; @1 f5 S  c+ g" Y- J$ Y2 E& t, X
update-local-reputation
! r/ w) D+ r- A3 l! Nset trade-record-current
& k5 x( U" Y# f5 e) J7 W(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
3 o& D) d6 X7 n( M- A! ~# y: c  {. L
]7 |% H, [: y/ S; Y
4 l/ v  ?- g& \$ o! v

  ~0 E& o. J% N$ `. `set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
; C+ ^& m, W3 S/ [/ x& j$ ]

4 a3 {$ G; F/ ^" j0 Pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. j8 Z# A+ p) i. @& V;;
将此次交易的记录加入到customertrade-record-all
9 v7 e9 f# B4 c) Nend
6 v  o# _9 K# P" e# z/ o, ^
6 w5 j; |5 ~! S6 C, P! Sto update-local-reputation* {- p; j! D  ^* `3 m7 o% z
set [trade-record-one-len] of myself length [trade-record-one] of myself3 C( ^' v4 B" |4 `! ~, J; J
4 X! T4 L# ?: o' ?

& E+ ?' p8 G1 ~/ z2 B: `3 b) Q;;if [trade-record-one-len] of myself > 3

9 Q" N( c4 B, w) ]& N- L/ ]- iupdate-neighbor-total
, ^8 {- s3 p; _8 I# ?;;
更新邻居节点的数目,在此进行
, p8 K0 F7 [) M/ xlet i 3, l$ \1 ~6 s* v9 H' o( {
let sum-time 0
0 Z9 J" {- v1 C7 g. rwhile[i < [trade-record-one-len] of myself]
4 Z, C- S3 f" q+ W[: t* Z* m  E0 F, _5 F6 o( f9 w
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- s# R. |7 N% D4 t% f# l  o: q
set i  V4 ~* t* c; b' c4 l3 Y
( i + 1)

) y  J: Z: I* \4 S/ L0 }) f]- e7 j9 c. F- S- {& y  A- M
let j 3: c6 T' l9 B- w- {/ `- u
let sum-money 07 F# h$ F6 t' T% B
while[j < [trade-record-one-len] of myself]4 L, a/ ~7 o& Q
[2 g6 D& k4 S2 I% 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)0 [/ r& t% J& Y! F5 v
set j/ [; ^& }+ p+ @) q5 ?
( j + 1)

; Q, V  o1 j$ C4 @+ l; W# l]7 v: _' ?! a" |# D/ {
let k 3
4 n: ^( I* ]: P: t- ^let power 0
  I  T9 Q$ k% m1 e; q0 Dlet local 0
  P4 `, E* O/ _3 \1 Iwhile [k <[trade-record-one-len] of myself]
9 d# M' H( g& J[+ Z7 c$ k! L+ X# T) Z
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)
* }7 X7 ]1 f" @. S1 F: C9 \: L" Hset k (k + 1)6 X6 g& g/ V& K3 K# c
]
1 F- E  g, k* i. z3 r* y6 r1 f7 v3 wset [local-reputation] of myself (local)+ @- G6 R% r  w; G% h
end0 |- ^2 W% V! p( }. Q

" p: W7 Q. s! z2 `/ Q5 ]to update-neighbor-total* O) T8 Q9 l& M/ G5 _. P
$ O2 Q4 V# B9 f* k6 t! S
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
3 d4 x( f' L- W1 M0 V7 M3 q
- x/ b( Q4 N/ r

, P- U0 L% ^8 L5 T& Gend9 _4 y0 T7 N+ T: W# s: ~8 A

+ C! d4 k# d, L$ p2 c! i( R( kto update-credibility-ijl
" ~  ?' O& |4 d1 `# z
3 o% t6 o+ Y; e) V; y* X' Y( X;;
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。2 m9 O( k7 S: o0 X9 V2 j) ~3 [
let l 0
: A- J2 \: k3 ^& p/ Swhile[ l < people ]% J/ m* H; v: q; O  V/ h  }* F
;;
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
- Y7 {$ c9 ~7 R. W[
: Q% j! r; Y" u+ dlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
+ b$ r5 K& b' a1 ^9 vif (trade-record-one-j-l-len > 3)
  A8 @8 X. O$ N  G/ @2 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+ J% a" n. E9 ?) w5 ^. y% k
let i 30 ]/ u5 Z% M) k) ]7 q* n: [( q4 C
let sum-time 0& N( C% ~6 V. c
while[i < trade-record-one-len]! c4 x0 o" e3 e+ h# E
[* w8 j+ Q' S4 `: x7 Q
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )7 V+ J% Q7 J* T: P& g$ s
set i
4 w0 d7 w. y+ _+ G: O" `) @$ p( i + 1)
1 c. a& ]0 @# B* r7 ?9 h6 @
]
# u1 Y8 w% i0 ?) plet credibility-i-j-l 0
) y& l- B, p$ ]' c' P. G8 o;;i
评价(jjl的评价)
2 W5 d! Y1 k8 y( dlet j 3
, ~, Q- ~7 e7 A) J& }let k 4
( u1 U. Z) F4 mwhile[j < trade-record-one-len]2 O. Q# R* g8 W  g; l! ~" Q4 @
[
/ @5 \& \1 l' Uwhile [((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: J# W8 e1 q( X* `- ~+ f, U
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)& U; o$ x8 H) T7 G
set j
4 V: r  W& O! J6 o+ c# F7 N" {( j + 1)

& {1 P3 b* o* o7 u; z]
  [1 F3 K: K, j; g* u$ Gset [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 ))
' O; Q/ w2 t# z
* f# ]8 g& F! P6 I7 Z) H  I$ O" h* g
$ O, Q4 P- |' {, f: L  H( I
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
* C" P  u) x( `; n. q% T;;
及时更新il的评价质量的评价3 A7 i8 M; e0 N) t8 F% p: [6 n
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
4 C- e" G. N5 I; u. Z3 b5 t7 p* W4 [9 qset l (l + 1)
, N$ X8 K$ T7 `" b# F9 {& W# j5 L]
% [$ S7 o1 Z& n! Q/ `  Wend
1 }* v! D* H- W5 |; P
1 c6 G% w9 ~+ G, Z" j7 Oto update-credibility-list
) n+ i  \7 d% H- olet i 0
1 [& k! d" S9 X2 w! R4 x8 b- s7 Ewhile[i < people]
/ C0 T8 i, h" m6 i2 N( I2 E# {[! z$ y1 l. ]; q2 Q
let j 03 ^  O) I8 q/ Y6 Q# q1 P+ X% v
let note 0( Q) X. i: x7 ~7 w) `* P
let k 0
  u' ?' \; h& e# r( W1 @/ Q, |! D;;
计作出过评价的邻居节点的数目1 z/ b$ W* P; J' z$ }
while[j < people]5 A3 m. N1 e9 a: w
[
% G; h' s5 g$ f8 Qif (item j( [credibility] of turtle (i + 1)) != -1)& H" r4 f! ~- l# H2 [* w
;;
判断是否给本turtle的评价质量做出过评价的节点$ H) q+ u) m: \
[set note (note + item j ([credibility]of turtle (i + 1)))
( W; u( K' `& z2 G;;*(exp (-(people - 2)))/(people - 2))]
" p' k$ T) L9 k( T4 X; Q
set k (k + 1)
* _" R( j+ f7 a0 ~0 e], N! X: i# Z" z  {6 ]$ V* ^/ x
set j (j + 1)8 G  R% H, c- A3 [- C3 `3 d
]
6 c% h8 w7 t& Z+ Y- M2 sset note (note *(exp (- (1 / k)))/ k)
" A; e6 L6 @! @) Kset credibility-list (replace-item i credibility-list note)
: A3 v+ M/ Y- Tset i (i + 1)
. z; @1 }+ j! |0 e5 W& J# T. S]
5 B$ w  B. ~3 \6 Jend& J' w; @- ~: W: R4 n8 E/ @) d
6 T) g# i. [- F- W- ^( Q+ @$ u
to update-global-reputation-list3 x7 }7 ]4 a( k
let j 0  a" i0 |- c* P$ }/ p
while[j < people]1 x/ |/ Z( [! ]1 {, J) q
[- Z$ y6 p- C: I' v. c
let new 0
! c! B$ x% {- h$ h8 \- F;;
暂存新的一个全局声誉0 I% v0 U( U: p6 Y7 g
let i 0
0 C8 q+ x, l- l9 o9 s0 x2 q5 llet sum-money 0& d6 }5 w! U5 i" W4 |6 O
let credibility-money 0; v* ~* Z5 z  \* [# E! T. q
while [i < people]
; k1 I  J) F* L$ \) W[
& o& z5 h! l% z8 ]% c0 Zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
  }  @+ {) k$ S' Gset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))- ]6 D) E$ d2 p8 ?6 u+ M) Y$ ^
set i (i + 1)# i/ i; A% A( ?2 c9 u4 C# C
]
7 Z: ]: }- `8 }) z1 P' Jlet k 0
: p  p0 U% }% `) }let new1 0/ W# a4 v; s8 ?: N' c' B( v
while [k < people]# C: W, E  A+ n
[
3 L3 j) j8 ^7 m  a- o/ t! }: ]5 w; Gset 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)
0 X7 h; X  I& s) w/ Kset k (k + 1)
$ |9 q! c7 J& v0 V$ B' p]
+ i) a3 M" s4 E# H9 Jset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
9 g7 O% z7 Y2 R6 Q, Q# C6 Hset global-reputation-list (replace-item j global-reputation-list new)* V* w1 q4 G$ Y  V% R
set j (j + 1)
) Q6 k5 S3 h7 r: C1 I4 []8 r' I! z# F/ g- \- T
end/ Y- L3 @3 x# K0 C$ ~6 o
2 b: J  M+ w3 D# e
1 I, z5 f3 e" u

$ e3 P" @! `2 t- @  oto get-color' {0 p4 H/ B3 p, j9 s( G! q
5 f1 T" R7 {0 n: v. v) S7 q6 k
set color blue

$ u$ f6 a4 Z4 u* W+ _6 hend
0 N% n, v; U: I) R* g2 x2 o+ H8 b  v/ k3 \! i& B6 e1 k
to poll-class- P# ]: e$ B) \8 ?, Q- B
end% i9 c4 Y& [! n- M

: n  G1 n) [' b* l7 Pto setup-plot1
4 ^, C7 v2 @2 G1 v$ x' I! H: a, x' w) w5 c& w
set-current-plot "Trends-of-Local-reputation"

" F. ^" m. V' d( [& ?. N# i: \, E- u/ h6 U% V. k
set-plot-x-range 0 xmax
7 U* p' s$ ], ~; y
2 C- Y5 Y, \8 h5 d5 a0 o+ i
set-plot-y-range 0.0 ymax
- @; N0 Q8 {2 ]) B" H' r
end8 W& `. F, Z; R

: ~7 T+ @" i! o* p& U& }to setup-plot2
  \" B5 ?3 s/ s8 D
% j" ]' Q7 w# O' Pset-current-plot "Trends-of-global-reputation"
0 N7 t7 o8 L6 }. d2 @
2 H* }* B: p  Y9 X
set-plot-x-range 0 xmax

% A2 c+ D+ B" y) d9 U- O
( @* R' o# ^: cset-plot-y-range 0.0 ymax
# j3 O" ?6 Y% Y2 M' G+ o: e
end
7 x' g8 P+ A" M% s4 E* m% M5 N
1 i+ ?& X* p1 R- @' @# X' n5 bto setup-plot3
0 R- ?& i/ Z" k
" {( i/ z% `. _. O# i# u/ Tset-current-plot "Trends-of-credibility"
  @' ^, N) e' H$ P( y! x  x
2 W; m( v4 T1 @. a) A# s, {; N
set-plot-x-range 0 xmax

% w! Q+ X  U( f  w& W4 z. {" L$ y1 k" X
set-plot-y-range 0.0 ymax
1 F4 ~4 C4 Z% v& x
end, a, w: x* l- ~3 r* _* H

7 s( r) W! b& f/ v3 |$ Vto do-plots
! \) L: M1 U( s0 ]3 l4 uset-current-plot "Trends-of-Local-reputation"
- n5 B+ c) a) O$ p9 D" Tset-current-plot-pen "Honest service"
7 F" E# ]) h; _end
: z1 B4 T" _0 q9 j+ B
8 e1 C8 [1 Q! H! c* }# O[ 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.
9 o/ f, O5 z) H& M% `5 z* S7 J. \/ m2 t/ I  }3 j2 C
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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