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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:& N7 v- w/ F7 c: V1 h2 ]
to do-business 9 R0 H% v! C$ f: Y2 y, z4 m. ?
rt random 360
2 g! h( N( M% n7 t fd 1
$ H+ D; `6 A' p5 D  O( y/ Q ifelse(other turtles-here != nobody)[
, d( |8 s6 `4 Q   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.# ^. \' @- e; N$ F5 d% b1 D
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    6 k% R0 b) p6 z6 m
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
4 j& J8 Q" m8 M" P+ h6 k   set [trade-record-one-len] of self length [trade-record-one] of self
1 n+ V2 P1 S- x, ~7 a) v; N* P( m   set trade-record-current( list (timer) (random money-upper-limit))
7 A* N0 ?2 f  E
/ ?. A& G# H6 s, o5 P) L问题的提示如下:
2 w: H+ ?& @( o( {
5 z. D1 z. n8 }4 K; D3 x* Herror while turtle 50 running OF in procedure DO-BUSINESS0 i. ?) r/ W6 q# S  y5 [
  called by procedure GO" ~0 Q+ F, V8 L% D4 P& W
OF expected input to be a turtle agentset or turtle but got NOBODY instead.# K' N4 g5 y) Z4 b; @* S
(halted running of go)* m) I' M7 j0 t" w5 c9 ?
$ y% {. N, M  n1 w3 O: @
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~~0 A: M) ?; K4 v3 P. g. b( R* `' v+ k
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( l" C' U! ]' v4 i+ o/ L- ?
globals[
0 A2 {% U# u# Q* u/ d7 w( Pxmax+ ?1 G* q+ t+ p% h
ymax9 _/ A" ?- M( C( A* q
global-reputation-list. b2 x8 [8 L. C9 m; ~3 m

  s9 i' M7 g' H8 V1 L  Q, d;;
每一个turtle的全局声誉都存在此LIST
3 _- c% |# ~5 r+ L6 @3 Q) o' hcredibility-list
& ^5 W" i- Q4 I* n! \9 o) \- E" f;;
每一个turtle的评价可信度8 L6 W+ Q0 \; c: R6 D0 Q
honest-service% g1 Q8 r+ j# C  A7 O
unhonest-service
; t; a1 ?- n* O5 }( Hoscillation
' u. |7 K" W# Q) Srand-dynamic
. Q: |, p+ o% H; @4 R]1 H# V! I% H4 [2 O
8 Y. h8 p6 c3 E3 Z; u% V
turtles-own[, ^7 ?6 {( B. D$ E2 ]( L9 w0 u: c
trade-record-all
( g8 j1 o5 N* I. p;;a list of lists,
trade-record-one组成( W& \+ I% n6 C! o& ?, O
trade-record-one1 Q6 F9 r% m& w/ \2 Q6 G
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录3 y$ B' p; ^9 y

' g' O3 e, a5 [$ M7 `' ?;;[
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]]9 @& {; Q3 H) S+ A7 x3 J
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]' t9 d; {0 Q/ y6 N; W& f+ 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
( b+ z' l+ i; F* c6 B3 E8 wneighbor-total! X" C) R/ J  V: G7 }4 K. z2 O
;;
记录该turtle的邻居节点的数目& r/ {0 B5 f0 q# H; w& |* a! s
trade-time1 [3 q% F1 o3 Z
;;
当前发生交易的turtle的交易时间& B2 V6 t3 G' \) |" g+ A) h
appraise-give  j5 |: G& O4 b; B' M4 M" G
;;
当前发生交易时给出的评价
7 v" M, ?% i  Cappraise-receive: z: u5 H, }6 F7 w8 p9 d
;;
当前发生交易时收到的评价
/ x) @/ i1 J. R( U' ~6 ?5 Pappraise-time
  r3 E; g  [. E; x; S0 w4 I0 N" d2 A;;
当前发生交易时的评价时间# U9 w: z2 G5 K* R4 O" P& P" T
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
% K: o+ M) `5 `& [% Jtrade-times-total
3 w% V+ A; g  J" h6 ~;;
与当前turtle的交易总次数
# Y4 |8 {, D* b9 d* h1 z: _+ l: itrade-money-total' p/ b; n: ^; J0 r8 g0 J
;;
与当前turtle的交易总金额
* ]# M/ x- o" @3 B9 ~- p- }local-reputation
" ]# C0 d+ x1 W+ }global-reputation5 W! y3 V. ?) j  c5 T4 M
credibility: @& W- J1 N- q' k3 z# V
;;
评价可信度,每次交易后都需要更新4 H" ~: y+ r6 @( F
credibility-all
9 ^5 }& j1 P" r8 C4 v% B;;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 H, `2 J0 ?' i, m
& i5 W1 r* D1 h5 p
;;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& V, c" }7 m7 x5 |" E
credibility-one3 S( D* i7 @7 G7 `2 D# d4 f
;;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people7 F4 ]2 J. A2 E" ~$ g6 _& F
global-proportion4 s; Q( f3 c- f4 K3 _
customer
1 F0 \: O3 X" xcustomer-no5 f8 E, k. I3 k5 W4 V. e2 z! I
trust-ok
" `7 o4 l% Q2 B7 gtrade-record-one-len;;trade-record-one的长度% N) p3 Q) }2 E% Q( t: `
]" q" g( F- q8 J) `" Z
4 Y$ r$ ~5 D/ I
;;setup procedure. h/ y; F/ Y! Q% U
$ R% r6 V( U/ b- F
to setup
9 N% z- ^1 c  Y1 e2 d; x4 N8 }  Z; A6 J2 K, m  b1 {
ca

" L% D, P( i9 C* ~
9 d( v! T6 n- I6 einitialize-settings

' ?# D/ y$ K& U4 E) a
- p( H. Y/ w7 Lcrt people [setup-turtles]

4 E1 B6 A# r4 o. G% C8 P9 h! a  r4 P& S7 b+ A& y6 W
reset-timer

$ A* A5 q" E) |" \: u/ b$ A  u5 Z  B; m
poll-class
, @! \. I( a, o# I. C8 W
3 k7 l# u. H6 {7 S1 W+ |
setup-plots
2 R% @" X, a: H: Y

2 K" d5 Q7 G/ y+ ~. u2 U* ido-plots

! U" h) ^) K! d3 I$ Kend3 y4 {3 a: l, N& h7 ^# p
! Q! g5 O- e& T- w9 _
to initialize-settings/ }1 R5 c: B" Z" W& r2 p6 O
# T' q) S. q6 e$ Z6 P3 W
set global-reputation-list []

8 E6 Y3 t& G5 T% E$ ^" O1 e
) p  t. T5 U: S: lset credibility-list n-values people [0.5]
% j3 g$ ^8 D6 r; x. K9 u
; g- F! R% G. Q4 L3 B* ~5 P! o
set honest-service 0
  X* s' v- A  @( a5 r; O
0 ?2 ^2 q. }$ y) \6 t: c) k( y
set unhonest-service 0
% J7 p( h# L/ P, f' a1 T) q8 D
  s! m& }' M9 n! B) o  D" b
set oscillation 0
8 z; [" |2 L7 i/ p$ ?3 V' O
/ [# {0 _0 D; v; E4 {
set rand-dynamic 0

: e% p( ^! u# S9 |4 y! s0 Bend  c3 }7 M' G5 |! ]* F( ~

% a% e, U# o% V) P1 g2 qto setup-turtles
3 K3 t& Y. q$ T+ m" A. x! hset shape "person", y, H% W& q5 t
setxy random-xcor random-ycor; Z  e) _1 E  |& b1 l
set trade-record-one []! l  i; U$ _1 \4 A) H! ^  Y2 m
3 S) X" ~; E4 t. D/ @: }
set trade-record-all n-values people [(list (? + 1) 0 0)] 7 V0 C! w7 u  v7 v

, i1 q% v8 I( @7 l9 _set trade-record-current []! X6 `8 k; H3 u0 V
set credibility-receive []
6 v6 i3 M! o1 h7 ~6 nset local-reputation 0.5
: F, q, O) ]; O) c) Uset neighbor-total 07 i! Q2 I, d- x5 D
set trade-times-total 0
& K5 N, J7 s; ?, I( Iset trade-money-total 0) k% l% F" U* H: g
set customer nobody
" x  _' W  z5 R5 a0 K2 ]set credibility-all n-values people [creat-credibility]# A. g( J- _9 Z# ?+ ]8 n
set credibility n-values people [-1]
2 @% Z0 t. W- z7 M7 T$ s' kget-color/ }+ D. H$ V+ i7 S1 }
$ `" `4 L$ Q- x% l2 O' @
end  u5 P5 s) U8 t9 Q( c  y: g5 I
5 o: ^+ X; g2 c8 R$ Y
to-report creat-credibility
( O- Y" ?9 U# w6 `report n-values people [0.5]& k3 j2 M) y# |  w+ ]
end
" `$ J3 S3 F% ^2 g
, r8 E  h  T8 e0 r6 U6 R, uto setup-plots
: i5 M* o! D2 z0 K' a% f7 ]/ d' j: c  U
0 o2 |% D% h# p6 y' qset xmax 30

! O3 o! f$ y+ Z' a% B6 ^4 `5 W; m6 y3 m  w* J* g, p; K- k% t
set ymax 1.0

5 B7 Q( w( E# S8 v+ F$ W% W8 U& `0 ^3 }7 o  t1 F
clear-all-plots
* I- D: t, c% ~, }! |

6 C2 J' s8 J. }, nsetup-plot1
) ?# S2 _" w) B4 r+ _' d+ }, W
* g: S; I4 H3 q4 Q
setup-plot2
8 M1 D2 K3 J6 T+ Z3 {  ~
( L6 f" T4 l: I( R, ^
setup-plot3
( v$ t  f& K% B! b
end2 O1 N# I& Z) W( \

3 U0 |4 d5 s& |! _! f) p;;run time procedures
$ P( R3 q9 C9 `( N9 p) d
& m- ]; s- Q7 [8 c0 |1 {2 j* Bto go" g' s  v% r  ~$ A# N) u

4 V- ]+ `& Z7 K0 i! J1 {* sask turtles [do-business]

; D) J7 ?( ]. N. r9 |2 }- D0 ^+ V) zend: H2 k' \3 S# p7 R6 {8 U  Z( k

9 S/ h3 x% h! E9 jto do-business
8 M, C+ i, r# s7 @
. L6 }& N7 L/ w# h  \7 H

! U, @0 V+ d# E7 |' t) ]. [rt random 360

$ L2 d3 I$ j' y$ B
5 `3 S6 {) P  S" R( wfd 1
6 I$ J/ F2 y; x: G7 F* r

) x* V6 J: [" f$ V0 j; ?* X* hifelse(other turtles-here != nobody)[
/ F7 a# @# T/ u  `% i0 k& t

0 t# R0 _' X- H- |0 Rset customer one-of other turtles-here

7 g$ w6 H. B8 h& |9 ~2 n  K* u' `' p' B. p" Z% C
;; set [customer] of customer myself
. R  F! o! U: E& |. w9 f) H6 j# E" r. }

3 ^* R4 n7 K3 \0 b  G( ]- oset [trade-record-one] of self item (([who] of customer) - 1)( ]+ o: Y+ ~: t% _+ b
[trade-record-all]of self* o8 [( j& q  W
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

- p5 n& u) P, Z! S$ G) f
3 w* {" E5 I; iset [trade-record-one] of customer item (([who] of self) - 1)
( n6 f6 ~0 P3 d! C% ~/ x[trade-record-all]of customer

* X+ K9 w  m, e" b" f; Z# p( D* h. x$ h9 C* \9 K6 r
set [trade-record-one-len] of self length [trade-record-one] of self

$ q5 ~3 U" A& ]. O% l% t& G: A8 W3 F. Y. P4 G
set trade-record-current( list (timer) (random money-upper-limit))
) I/ ?! {$ O, k) Q! Y8 y: ^
5 |9 @4 o& ^( P  y
ask self [do-trust]
, F8 s+ p1 {: ^2 ~+ P;;
先求ij的信任度
) Q  n  }  Z3 I+ w! ~# t$ u) l- f6 N# ]2 B: \
if ([trust-ok] of self)
& Y( _% J  p0 z( w0 D& P  P;;
根据ij的信任度来决定是否与j进行交易[
- I; l! T& r# d0 s( Z% pask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
/ Z, q% R  X/ N( _" X5 G$ C  t# ]' F: x8 U
[
6 j$ p" w  K/ O8 I) V1 z" ^8 f" C
9 U. {% ~* K+ G% A) O- m
do-trade
* B  W0 v7 o4 @% b/ s
6 T. S# w% E: ?* h4 F
update-credibility-ijl

7 o. _0 U4 X$ k7 Q
8 }$ ^0 _8 S7 Qupdate-credibility-list  Y- O- `" P" v* T
" E! w5 a. p! W9 U) z0 a0 |/ B
; \% F2 U1 B$ U( U2 x
update-global-reputation-list
+ s7 j' i; I/ a4 m

$ ^  i6 w2 K$ \poll-class
1 S. u0 f+ o8 ^3 j% Q0 n0 M
6 F7 S- L2 Z9 {* r
get-color
- G9 n$ y. h/ O6 d9 I; v

- Y1 @! u4 @5 |]]! b- F; M3 u& }+ J) y  c- U

5 w6 A  e3 _6 C+ m6 u% `& |$ z;;
如果所得的信任度满足条件,则进行交易
+ W% o6 Y) w' h# t' F; B
- e& F7 \) R" k: J; F5 W: x. l[
/ s1 o$ ]8 M- P; n
' C- V% Y7 l7 j# r  A* c
rt random 360
' x9 \0 }3 r4 [( {4 I
* Z: t9 A) o+ H' Y' Z
fd 1
% \9 N' W* R6 \

; B. V! C4 n; \( O]
+ v  x1 e: s% h+ N, T

% c  u+ s: F( J' ]; D3 [3 kend

2 h: N" R: j! J5 k7 h. x# e  q+ G' B8 u" t
to do-trust # G# g1 A) ]4 C
set trust-ok False. M( i& i( j& b- O
5 S6 M* Q, @( Y1 D# R  V) K. O

) G2 A* J+ W8 slet max-trade-times 0
! `4 l" U3 T6 }foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
, Z/ e* T" R7 @8 j, H# u+ Alet max-trade-money 0, T/ |! G3 q9 z% R' Y3 i
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]5 B5 V* [7 C; P
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))" q0 h8 g+ o3 S: W: K

/ d( J- O3 ^* P2 ^% A
4 `# U7 A4 V% F  l
get-global-proportion
# q4 r- I" I/ D6 y  ~8 |' alet trust-value, x! @* U3 v: H6 {
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)
  j0 r, @0 Z* }; Z
if(trust-value > trade-trust-value)
. ~4 D3 h, V; {* \[set trust-ok true]
2 Z0 H6 b3 ]) N$ _, W) ?end. s0 ?  Y# A3 [

/ E$ S/ e# k7 w2 O4 w6 `to get-global-proportion
& [9 N) O8 q" ~! v" h' mifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)% g) b8 W9 E( T/ ~" s$ D
[set global-proportion 0]
5 p0 x& {+ K3 P[let i 0( B, J3 l7 f, A7 k. K
let sum-money 0
1 Q$ j/ M2 N" K) q' }8 i7 @while[ i < people]5 o7 O- G; M5 e  F+ m9 j9 V' Y* F
[
/ d/ b  j# ~0 [/ `: I- m2 yif( length (item i
3 Q' Q* r* |" {7 X% y[trade-record-all] of customer) > 3 )

8 p& _* h! Z; Z/ e$ s[6 k* b: m& ]  Z/ S3 z) _0 c
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))1 d/ k! ], C$ O, ~9 s
]" A) V) E( T# f8 H, ^
]
' C" O* s3 F" I7 Q7 L, q' a# Nlet j 0- w# [4 G/ F) m0 F9 _
let note 0
6 d) ~& Y- }" S8 d: o1 w, Pwhile[ j < people]
! r6 s5 p. [" S0 Z  E[
4 U$ Y2 T* o& Yif( length (item i
$ i7 n2 P3 \7 i- u$ \/ \9 `[trade-record-all] of customer) > 3 )

& {: w# J: ~8 s0 ~[
5 Z8 F$ r7 L- Q0 xifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)! z1 v8 G9 o7 U' A' u5 N) B- w
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]* m8 l4 }7 ~/ Y/ v* b+ Z
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]/ V# X& U, L2 y8 Z; X
]
4 h- R6 M; T% @/ @: s1 H) t0 e]
* G6 c0 X8 j! q2 q2 h3 C) cset global-proportion note
! D' C! G; Z6 }# a9 M3 H5 ^]
; {4 ~' I0 o  p, }8 xend
- W3 W- ^3 p4 w  x0 `8 X/ Z7 A) \3 |: a. u5 W7 [
to do-trade* R+ ~, q; Q/ I/ h/ m
;;
这个过程实际上是给双方作出评价的过程- B: g5 E9 q6 i5 a, X; h- {$ Y0 k; M7 k
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价- R2 ^# V& u! ^  e
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价5 R! b/ J" C. R) u& D
set trade-record-current lput(timer) trade-record-current5 O0 X) L: T1 G. x' m
;;
评价时间
# o* j! S, s& B1 fask myself [
0 D" v& m' c0 Fupdate-local-reputation
8 x, R, p: k1 E' ^set trade-record-current lput([local-reputation] of myself) trade-record-current/ M  k) L" ~5 f, X) c
]$ v. v# F& _# \2 h+ O
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
) E7 R+ b, `* f5 {. \5 u0 ^* ?;;
将此次交易的记录加入到trade-record-one
: y/ |. f6 X) o& lset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
# B4 X7 L$ \( a7 S% R% [8 ylet note (item 2 trade-record-current )
/ e( u, ?) X7 X% s' r' Qset trade-record-current
: [0 q' S, J* [' ^+ ^( o(replace-item 2 trade-record-current (item 3 trade-record-current))

. f5 ~9 U& n9 Z, f/ V( a+ Xset trade-record-current
2 d$ [/ z8 ?5 L' A(replace-item 3 trade-record-current note)2 X/ g4 n9 i/ |7 K+ m
3 B1 N; v& k1 a& V
4 Q( Y, U! Q- N& y+ r) R9 A
ask customer [& ^8 T: G4 C7 l$ _* R* F
update-local-reputation1 }# a3 s7 b. V- K
set trade-record-current: A, g& w; e7 j. n4 f$ o+ C$ i
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

& O! X/ @. @( R6 Z% F2 a]
: @1 G' d, ?1 D. F8 L* ~9 f1 S9 c! m
. F& i3 u$ z" z$ _
) j' w' ]" L/ v8 }. M0 y
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer3 q, C* O/ v# {  J
# M& v* E$ S% f" A+ n7 R4 Y2 d
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
9 x1 t& ?7 Q' l! G;;
将此次交易的记录加入到customertrade-record-all
& N5 O. N- \, [  O4 t8 Oend
  D2 O. ?: [' Z* @. m, ]- M* N2 |
, U1 f+ F6 C& V3 p& J) eto update-local-reputation1 m( f# Y! N+ a* t  U/ S. Y/ A# Y' y
set [trade-record-one-len] of myself length [trade-record-one] of myself
4 S( T$ m" z6 y( d/ n0 Q8 O
% V- K. h: O. O( ~3 ]8 f4 |0 m2 m+ Y9 ]4 T6 `# A" d( w
;;if [trade-record-one-len] of myself > 3
3 I  M. U& T7 v- O& ]
update-neighbor-total
4 F: F6 Z  F8 e0 L* f, ~9 N;;
更新邻居节点的数目,在此进行
* s- `" i' i1 n' ~8 t6 }let i 3; Z" _( x5 o+ L: I0 I% I/ ^
let sum-time 0
5 r' N* D9 j/ p- uwhile[i < [trade-record-one-len] of myself]1 t* y9 f: n" o# k
[  E6 m( Z3 P& u7 B/ Y& {
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
# h6 G, x* d" p3 Sset i
8 G2 g) c! U- q. L( i + 1)
. {* T0 y- ]: }3 h3 T$ w/ {, K0 E
]
0 f. Y. I( h# }/ p  i+ N2 ulet j 35 T* V) f3 C) i# @4 u& g
let sum-money 03 B0 p: J1 Y' i2 L5 }0 E+ A& m
while[j < [trade-record-one-len] of myself]. A# S6 u& R3 C& W. F& I, k% {
[' }9 r8 k: p5 ?. W2 G: V# 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), z* g0 Q) S4 Q
set j
+ X% a, e1 y0 C% E, {! G0 s( j + 1)
5 l5 w9 _$ O1 @4 a5 e
]: _5 [5 {5 [4 u! m! A! ~4 {
let k 3$ h5 p, N& d& ]2 W
let power 0
  c" c2 q6 ^: _* ^$ y* r) Klet local 0/ f3 @* t0 e( Z4 v, p
while [k <[trade-record-one-len] of myself]
/ [5 N& A5 W) ~" @9 q[# g, B/ R6 I. ]
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)
2 ^# {$ P5 j, ^; U' ]4 R( M+ ]set k (k + 1)
0 V% N/ O6 x. K4 j4 d: X& T]- w; j. a' s/ ~+ W
set [local-reputation] of myself (local)
: ~5 v& a! d7 C4 Y! P0 Oend$ K/ ^' f9 O8 Q6 @5 f5 `% M: Q4 n
! }+ |+ I) g3 }  W* T
to update-neighbor-total- J9 N2 l! q* T6 x

" `6 ~' w4 R5 \" |9 e- Tif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
3 n" u: e) [# j/ j' n/ F& E5 E$ W. a. d( E5 |- R1 D
" P; Y. r* ?# I/ ^- R  _+ G: n
end
2 G9 \5 U4 Y$ a2 c. L' m5 a: I  k6 l
to update-credibility-ijl
; F1 g: R9 N2 s& c! ]
6 d! t( ~2 I" x3 b5 O$ c5 l;;
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。
$ r7 ?  ^" J5 a: Y" [% M0 V9 h3 q1 tlet l 0+ D/ ^. m# S' Q
while[ l < people ]7 u' l* {8 S( O3 T4 g3 H
;;
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
$ P" r( R. ^* e4 X' B# I[
/ o; R. ?1 \, ]" slet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
! z& \: |  V. K" d* }if (trade-record-one-j-l-len > 3)
' ]" p' y5 u( E$ E# h. m[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one! \3 Z# q: y# l7 H$ H
let i 3- f3 R$ }& s" ^# X3 A7 M  q
let sum-time 0  U# _/ k4 F5 x- K
while[i < trade-record-one-len]
0 Z6 c' z( {1 M* T[% C* S$ L5 J: Y7 j, L
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
6 g) l" B. m9 T+ \! j  d' b) wset i
; X, X% E$ ?3 [0 ^) @) O  H9 w. k- c( i + 1)
: d: o# L3 x. O& C, I1 Z
]3 q& A7 x, T/ H& A6 D8 e; g6 C- y' u
let credibility-i-j-l 0. N4 \9 ?% ?! O6 F$ [3 F5 ~
;;i
评价(jjl的评价)6 N/ H2 {  Z% b  h
let j 37 R8 Y; v/ z% }' @
let k 4
  `9 j, J) W- y; C) e2 ^$ swhile[j < trade-record-one-len]- X7 h, z2 J. Q/ q( I* N1 C
[
- d* R) a* k& v2 B: e9 [5 Q; G5 swhile [((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
- O+ i" Z: e  |) S/ 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)
  m; T0 Z. j" x; L! xset j
& r- [3 L- e+ L& t: }  E6 Y' P( j + 1)
; U/ H0 I' t7 D! i( m4 V; e5 q
]
: c( Z2 s5 o$ Eset [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 ))
5 ?2 K3 N5 Y- K; e. T: u
- b0 r6 r3 \0 j( R- K; C& L

; E; [. q' w+ ?4 Z! ~let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)). g& s7 N" B  W
;;
及时更新il的评价质量的评价! l2 e! z! D8 e
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]) V# S& Y1 c7 B3 d
set l (l + 1)
8 R7 ^( P9 D- B; p% e]
) `& T1 ]$ e" mend
5 C, h2 p. \) p+ w9 h
$ ]) F& p' ]+ G1 A3 U: jto update-credibility-list4 u0 ^6 V- _# z' ?9 d
let i 0
5 H) p; }/ V. o  ?$ F, uwhile[i < people]) v& m* l/ H" ^& S. d! i
[( k" H  M. `- }( v+ A
let j 0
* e* W& m5 E7 ilet note 0
/ P% F2 D/ g8 f" a' h% ?4 y5 J2 p8 Elet k 0
9 X! Y8 L9 _) y! O;;
计作出过评价的邻居节点的数目
0 r: p7 v+ r1 J/ B* k- P! j* @while[j < people]
+ |5 r6 @& ]+ {! x+ W[
- ^3 B' `5 H' r# B' l3 nif (item j( [credibility] of turtle (i + 1)) != -1)  E+ @3 z- F7 {- p3 r/ y1 S* V
;;
判断是否给本turtle的评价质量做出过评价的节点
, J8 l7 Z8 r  ~! y% P9 M[set note (note + item j ([credibility]of turtle (i + 1)))% i9 E- {- y; g# D$ b7 i
;;*(exp (-(people - 2)))/(people - 2))]

' m( ]1 U5 E2 Q& p5 P/ d! _set k (k + 1)) s0 V7 O, J) u; _3 w! z5 h) _- t
]
. s( M! u# {) E2 Nset j (j + 1)
" N9 w& |' I9 R5 P) p8 b]! e7 W, D' z1 s
set note (note *(exp (- (1 / k)))/ k)* H3 Z, ^4 S0 l1 J' W
set credibility-list (replace-item i credibility-list note)! a: Q4 T2 A2 ~4 B) w7 p
set i (i + 1)
  m# F" b# \5 B]
, O3 H4 i- f: M6 X+ t! z! Vend' A8 x! g5 s* f/ C

2 R" I7 ]2 k8 B3 M; s$ l5 B% l0 Gto update-global-reputation-list
# H: a1 Q0 @) p1 F9 Z& [let j 0: y  P" d1 f2 C; D1 S: f3 r
while[j < people]* N" k7 [2 [/ ?# i. j3 {
[
- y5 o* v5 d: H: e5 ?let new 0
9 g( N: W: q* u;;
暂存新的一个全局声誉9 d- O& W) g4 _
let i 08 H5 O0 q  j3 X6 m4 \5 d
let sum-money 0
( C/ g. b* H! l: G( \0 hlet credibility-money 0# r0 O) u3 k: Q1 V3 j4 h% N
while [i < people]& `9 B5 [& ^$ T+ b2 D/ a8 q3 }
[# K, E+ a* D8 `3 K& w! c
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) z, U" w7 |8 e* c% r/ j
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))/ H" y6 A7 G$ n8 g
set i (i + 1)
' ]( K( ?- ?# S9 O/ I5 {0 n$ D]
4 F" ^4 h7 L  }6 V- |9 T) M7 clet k 0
  z" {! H; D; R7 g* }let new1 0/ q4 n; Y5 x- D
while [k < people]* N# ?. t% M' \# G0 h3 Y6 C2 U; L
[  m* Q8 }5 d, ?- [
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)
7 o& I. m, Z0 E- hset k (k + 1)- U& A5 w( y, f2 H; V8 x6 r6 O* J6 O
]
0 E4 f, y# v- Y1 r/ h8 sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
4 y; `# u! \# c8 V- m$ E" Xset global-reputation-list (replace-item j global-reputation-list new)
- k+ x* s+ J2 b. [set j (j + 1)
2 o0 u; f# N* r- p- P4 U]
; v) z+ e6 ^6 ^* Eend
& I& U5 f2 y- ]/ L2 Y
( e+ J/ F. ^8 |* i- J' M% `% ~$ e; c: p0 j
" q8 z$ {% y6 Q5 ?! Q4 x7 k
to get-color
4 ]$ L. n! A5 b, k1 M( p
: G+ C! C1 n% }: Gset color blue
( k8 I2 p, ]& Y% N
end
* G' n7 q- G& _
2 o" K, h2 y- p5 D/ C) \" gto poll-class
( s* A/ Z4 E) J$ Gend+ z$ O8 i# L2 B7 N6 j7 A& q

  p" L% H8 ?) A! s/ S6 D6 kto setup-plot1
; Q+ }7 R3 O% x" a8 ]3 N( k+ g+ r. Y7 ~$ M5 h8 h% I% d
set-current-plot "Trends-of-Local-reputation"

$ E. `+ d0 p% z
8 z2 W% [! C) k0 o9 `3 g: \1 hset-plot-x-range 0 xmax
- r* b) U! n& M: |7 i
1 }5 |' J  X& p6 i+ l6 z
set-plot-y-range 0.0 ymax
' J+ ^) h. E2 y* ^
end
1 |3 ^# d9 I& M, S4 A1 \3 _  Y' {5 v: w- t2 v& `/ m
to setup-plot2
6 P8 O0 p3 E0 @% q( x4 n' X. j7 |: \7 K0 G* `! ^8 s$ Y& P! O
set-current-plot "Trends-of-global-reputation"
/ G4 @9 F# S7 T& Y2 o2 l

  s( M, |  t7 o8 D. n5 iset-plot-x-range 0 xmax

. t' Z# ^& l& S, f5 h$ C8 }0 N1 S% W+ U5 `4 K6 f7 d' A7 D6 C
set-plot-y-range 0.0 ymax
; J0 H. _( q1 [& Y6 ]5 [
end; e. F% h% X" d0 G$ S
# H4 M# C& a# b2 n9 Y1 [; V+ r
to setup-plot3
) i$ _( _2 h/ ?% h; w
+ U' N3 U7 y" L2 }5 K! F  ~set-current-plot "Trends-of-credibility"
" h3 J1 O4 ?% O+ r
7 n2 B$ t. v9 v4 w/ z4 s2 n
set-plot-x-range 0 xmax

; X, _7 o* \8 m% n0 `4 V8 k& P+ J' }' B
set-plot-y-range 0.0 ymax

! F- o* H7 z. c, A% y8 Nend
; ~' Y$ h+ Q: O1 `' s0 Z* I3 w
! Z$ w4 `# V* M5 w0 Wto do-plots8 n1 `( F$ X& m. U' D
set-current-plot "Trends-of-Local-reputation") N/ u3 \' a# i
set-current-plot-pen "Honest service"
; T+ @: [4 f8 q/ tend
6 e% h  [0 ^9 _4 @0 Z! y0 z6 B# e3 C& C
5 A+ o; m% d0 G0 T5 X[ 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.
$ U2 g! R) y7 ?7 w+ \) p7 N
( z# t0 D0 C- Y; p+ r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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