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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:( P2 a/ C" J8 t6 `
to do-business
4 u+ ?! W6 r/ i( |8 v1 n rt random 360; B% O+ Q! V, N) _6 |- m1 u  n6 t
fd 1
* t4 X4 f; K# C- p ifelse(other turtles-here != nobody)[
' d* `9 R6 t" M: {9 w! s$ j$ k+ N   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.
! p! X( b4 {$ Q   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ' I; g8 n% W: \* r
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer( t5 J+ E- Y! t0 a3 P  z
   set [trade-record-one-len] of self length [trade-record-one] of self( u3 S: M" z; y% V  ~9 N* {
   set trade-record-current( list (timer) (random money-upper-limit))
, d( }) I* C8 u  _9 U! ]! t" \& \( `# w5 O
问题的提示如下:
. D! o) J$ u! K" V, }3 K& ?4 i/ c6 g
  s% R$ t! ?& L; p8 }( ]2 eerror while turtle 50 running OF in procedure DO-BUSINESS! X$ i7 F7 i0 B; i* V3 t
  called by procedure GO
: T; Y  K, z, E2 j( fOF expected input to be a turtle agentset or turtle but got NOBODY instead.' ?. Q. s4 A' L, `- I
(halted running of go)
" z/ P" v0 X3 H% R+ K9 J9 M) v) z# a6 L" e. F
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~~$ [& p; X" k; 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
! C. ]2 o' S* v0 \/ _8 B3 |globals[1 c3 r3 x% C& L" F
xmax; j* p6 Y3 o* f7 x& c, N3 u
ymax7 f8 K- ^: [3 a% @: m
global-reputation-list, F* O) i7 h" B' i
2 S; Z/ E  c" J% j3 l- Z
;;
每一个turtle的全局声誉都存在此LIST
+ A5 A. N/ w' {: j, r& Qcredibility-list$ Q8 D2 M* w/ }5 R0 |$ }  y4 I; x  E
;;
每一个turtle的评价可信度# N$ q" r) p. y" C
honest-service* n- h; ?1 ], d2 ?) _3 I" O, Y; h: h
unhonest-service
! B& e( H1 v5 e. k8 ]3 ?oscillation
# p' }+ P) T" h# nrand-dynamic
4 F! G4 k4 S3 C! H3 n]# q& Z5 h: C4 _

  {4 x5 t( w9 B$ \turtles-own[2 |6 N5 P* T2 w5 i8 |) J
trade-record-all+ P- F: N+ \( i: e1 R* d5 X$ |
;;a list of lists,
trade-record-one组成' X) ]! V( w. T- z! g
trade-record-one
/ _/ s% e0 E8 A0 T+ X, p5 h5 q; 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) F, _8 ~+ H1 t1 R1 j  M% J8 b( L" E. j
" z' m$ _- I- h4 Q+ u- B! Y
;;[
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]]
: M' c: x% f; s' O: i+ Ctrade-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]
; d2 q8 I+ D# ^7 Ncredibility-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
* Y5 E5 q8 R, r2 l; \: f0 sneighbor-total/ y7 C/ K5 ^+ y" D
;;
记录该turtle的邻居节点的数目" O1 o/ s0 H: v, \
trade-time
& `9 d' ?3 ~' @$ n: C8 q;;
当前发生交易的turtle的交易时间+ u) a1 U3 C4 L6 C
appraise-give
4 C' Z5 n& S, M% V$ I: p- P;;
当前发生交易时给出的评价' D* i+ U: ~/ n* i$ z6 d
appraise-receive. J; A6 ~2 ~2 s/ ?
;;
当前发生交易时收到的评价
# C) W! h1 g) cappraise-time' O( p- e1 \% v3 Z6 j( h" `
;;
当前发生交易时的评价时间
  `% V, n5 t& Wlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
6 |4 E. F0 [! c# n4 Z$ B+ Mtrade-times-total8 K! [! Y& w7 V1 X' E
;;
与当前turtle的交易总次数
& {2 `  z' M+ f. o8 x& Ntrade-money-total
8 z3 w! K; a3 a. a: h;;
与当前turtle的交易总金额3 F& a; X* b; S$ [  D
local-reputation
' N( }( e* l* X, H3 t) N% t+ Gglobal-reputation
0 C+ }. X. Y6 |4 c" tcredibility
0 l2 M4 ^1 ~0 m! Q5 [;;
评价可信度,每次交易后都需要更新6 C' J( ~# E$ N& u; C  }
credibility-all
2 J  z0 ]2 u  O; g( x$ q$ f;;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 I& c( b- H. _/ f& C
. \( q, e3 T+ ?+ Y1 q. n
;;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
( i" F  E5 @6 O6 S  n; Vcredibility-one3 a1 F- L/ U! N6 d( o3 b9 Q
;;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% y; ]$ {& V8 I1 C9 Y; @/ n
global-proportion
8 Q( K# z# }% U6 @4 ]4 R+ f% a; Scustomer1 D; x6 H4 t/ l0 e. \
customer-no
6 a+ b/ i' I6 ?" Strust-ok5 p9 D1 l7 \6 R
trade-record-one-len;;trade-record-one的长度
3 W& k6 W- ]4 J6 R]
$ F" ?/ G9 t8 a+ @1 @/ _9 w
3 s. |: R; ]* d5 {2 Y* S, a$ j;;setup procedure# Z, N& S, N$ {8 B
! d9 ?- k- K  V& p2 Z) }2 s
to setup
$ i3 q$ \! ?! Y$ w0 U7 w: G- U
% ]& c) k' j% T" cca

) I7 a7 U+ l5 ]2 U' f
, k3 o2 m  A. e; r2 N4 ginitialize-settings

; ]0 }7 y4 m/ N. R! W+ ^
# C) p, Q, e& V6 b6 Kcrt people [setup-turtles]

# C! t' u; M: q1 @" C6 i+ Q; q6 j
) S5 x8 D* h2 Z) N  \1 n5 Xreset-timer

. i. S4 @( o0 u  w7 t' G+ n% r' Q% \4 J6 ^' f  X$ e1 R
poll-class

3 D# o8 A& l, s2 n) F* o8 s  B+ }8 a% [9 D
setup-plots

/ S7 H3 {$ Y! h4 ?4 {* Q# S6 u8 F+ e' c. O
do-plots
7 Q6 x/ Q' y$ R& R" y+ |
end
8 E9 T6 ^& m; C) @4 R8 A0 ~+ Y* a7 i0 {0 v+ c; K
to initialize-settings
, g9 o! D* g5 [( V2 z. q
6 }1 u3 M' Y; V' ~0 ]: |set global-reputation-list []

7 n- c" F- }4 y0 w8 e& V6 a' E' }5 q9 [
set credibility-list n-values people [0.5]
3 w! W3 Q8 x4 U/ U

. c( n, O/ r9 R# z0 N  }  Cset honest-service 0
$ O" a4 v; [5 D/ a
2 f8 s" x& M" ?
set unhonest-service 0

* T2 S+ X+ O) q" N8 B" O6 j* p2 P) z+ ^+ a) ^: i1 ^  q$ V- A5 f
set oscillation 0
  J9 y( M# F8 H' {" d

) l6 W, f& N( H: m3 pset rand-dynamic 0

4 F3 X+ v( B# H" }3 s4 J6 Eend' y& V! q* \9 U: M/ c
( B' q8 ~. r( {. F
to setup-turtles 9 B' x  h9 Y- o/ z3 q
set shape "person"9 g3 L$ K; n* }# h6 @# D! U
setxy random-xcor random-ycor
  w; b+ e9 `! c9 \: z0 jset trade-record-one []
) q' |7 t+ c* s! z: _0 \
, c! e( D2 ~, D. K0 D' u1 h4 G8 U
set trade-record-all n-values people [(list (? + 1) 0 0)] 3 E5 s  `- e( N) e
2 u5 E0 f. J' {6 T2 n/ e
set trade-record-current []: A( Y$ u6 l& s
set credibility-receive []
+ q2 {' x( j1 y  ?0 T. `4 u+ Lset local-reputation 0.5& t; N3 V6 M, c0 m1 S) \( f
set neighbor-total 0
. o- Z$ t% {! Z$ xset trade-times-total 0$ L) c: s  b: l. G+ R6 r/ @* y
set trade-money-total 0
! O) U( @9 S+ Y/ l3 j1 k' Hset customer nobody7 n! K6 d, O% I5 r" g5 O
set credibility-all n-values people [creat-credibility]' F  R* B5 C. p; r9 E9 x
set credibility n-values people [-1]
2 Y! V: q& F0 o* Hget-color9 S! I( R! G4 R# [) N, ]$ g* Q
. U& A) B3 A+ A  _
end, A  k5 Z5 A- B7 r" N9 o6 C

" }  M' {' j2 }8 w* Ato-report creat-credibility1 i8 @) P, L! Y) ]0 v
report n-values people [0.5]
0 F. J+ c/ H1 V9 `end7 h0 r- G" a! }3 r6 f$ F; a
5 {% z# m+ U  k
to setup-plots
( t  n5 a/ @7 r* `. g# {4 ~5 c; v" B  r0 g- \8 A. M6 i
set xmax 30

3 h9 C) d; I" W
3 h6 Y7 r. `' N% i1 P$ eset ymax 1.0
! E, S2 d! a+ z
( D% ~: H* s! N
clear-all-plots

3 o3 @: s% L$ \# S$ B: P. s
6 q/ F* `2 T. m- Hsetup-plot1
/ N2 _& t' Z" R- f  s
/ {. v6 S1 M; h2 Y5 t! G, b
setup-plot2
- Y8 C2 M0 E" a# y8 r2 I' a

4 |0 z6 n) a  U8 l9 x2 xsetup-plot3

: b0 z' x3 Z0 q# P, cend
+ X2 m) P7 T3 M* A# y
0 d5 y# T6 T* B- D;;run time procedures+ l; X9 B. Y# y8 c
( o: G' `, N$ r0 I- e, N' o
to go
& z. i& Q1 M/ G7 d# Q" D
" T! F8 Z/ J% O; @4 \3 Uask turtles [do-business]

" i1 ~1 |  Q/ P% }* Tend
! l5 q& B* X# H" i) o9 S
) J8 U7 F( X+ Q* qto do-business % ^" k8 M+ V6 P+ |

  t4 o" W) Z$ A
8 }# B6 {* q) V, P* T' i2 E5 O4 c5 @rt random 360
# P. t1 ?& I: L: a: f

, N9 R. C, k" N' G# _fd 1

* w# e- N4 V4 Z( S% D  B# {" ?4 r- }( E  z. L! A
ifelse(other turtles-here != nobody)[

& J5 n7 N" s% t& X7 n. ~: X
% h( Q! p5 h7 f0 g8 Cset customer one-of other turtles-here

& v: L9 ]( G2 f6 j4 _) l# a' ]* ?
3 ~) E5 {/ P4 R$ {; m8 @;; set [customer] of customer myself

6 ~, ^. Q) o2 @" ]( ~# K; A( f
! s, G( ^9 e7 R; N( S5 e7 Y9 N3 `set [trade-record-one] of self item (([who] of customer) - 1)) g4 o* A9 C; f! {% S0 s: m
[trade-record-all]of self' v' @  G5 G8 @
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

" `) w7 p& v8 l4 @4 L* |' x$ V& o/ K5 a! O4 D  T
set [trade-record-one] of customer item (([who] of self) - 1)% C* O: R0 a& v0 ]
[trade-record-all]of customer

/ r" I' {8 D0 i2 C' u6 }8 T) x9 G' j! u% ]  N9 h- v
set [trade-record-one-len] of self length [trade-record-one] of self

# _9 v5 K+ ]. K( D
# T+ v/ n6 T, E' K; s% [set trade-record-current( list (timer) (random money-upper-limit))
/ I' O' Z  y6 t: V
, l1 G  O4 u* }8 a. t# h
ask self [do-trust]; r, r" `* A! ~0 Y
;;
先求ij的信任度
2 K0 R. A# M6 A$ w
# c! ]/ N0 X  @  p4 j2 f) Zif ([trust-ok] of self)
; X& S( }0 H" A* m  \* ];;
根据ij的信任度来决定是否与j进行交易[9 Z9 Z$ \+ i+ Y  O2 x; j
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
) g5 U) F4 ^- `) _6 F  p+ ?  v
+ M) G' |! C% {; c[
% g- }% F: {' j7 k
) u. L, a+ ]. K
do-trade

( J& ~9 d2 z( V
- _" ?" G: h7 m/ Jupdate-credibility-ijl

+ P& G- I- |; U/ U" u, t6 O* W- @0 h8 {' P% @$ F3 m* Q' z
update-credibility-list! v5 [8 L6 G% z3 V: L5 @

' b; s1 r3 g4 J" h
& q+ P8 V% r, T3 v. h$ Oupdate-global-reputation-list
) Z- I! O1 W) H! N/ {

& W% x. c. ]5 v% Apoll-class
: O" m1 p1 V1 J, ^  M

. x( E/ _6 U) \, u. `get-color
6 _! \2 S( G! t6 x$ Z
. L2 G+ A9 ?6 |" v: n9 N
]]
$ E9 W/ B0 J$ j0 L, |7 q( e5 ?; q! |% J5 T. O
;;
如果所得的信任度满足条件,则进行交易
2 T  y" ]) ]- y# S2 W- R( I8 ?: w% P/ v
[
, \7 y' K; c. S0 c6 z# }' ^" G

$ w! {& ~1 U. @rt random 360

- k7 R; H/ v, J/ H- t) Z
2 n& \  t( D$ \& `fd 1
  o' I! u" c0 T
- u0 u' S9 I. L* Y
]
( u7 p" H4 t: H5 c1 P

0 V# K5 H6 m4 J$ T: j# ^! V# D8 |end

0 y0 ^' }2 F; c. v$ w. M$ o. ?* u8 y9 n
to do-trust
. `! Y+ N: u& \) M$ u/ Xset trust-ok False
; M, f3 x; ]1 r+ v  X& C# G$ y  M0 R
" H9 M, p) }# h+ X" Q1 a& u' g% k
let max-trade-times 0; h6 `& M6 c- J, [1 H3 f! x
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]* g1 N- B9 U' ~: Z+ X
let max-trade-money 0
$ e  C1 p& j0 B* e* r; wforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]" V% j& u: K( ~" E# {4 M( I- i; W
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
; \6 b. J( ^5 g! R) F+ L0 m
* D9 h6 K; F# \3 p- s& {) I+ W
9 H! Q  g9 P, c9 Q
get-global-proportion$ ^4 c4 ?; }) w+ p  l) D$ W: C
let trust-value( c* D+ g: w6 J; W+ 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)

+ o1 v$ M2 o( d2 D+ Q9 i3 p- Oif(trust-value > trade-trust-value)- O3 |6 u% F2 Z1 ?" Q
[set trust-ok true]  C" p( U- k, Z, k
end
) Y9 T$ @9 k1 w
5 {8 P. i8 s2 e' T" {4 b+ d! Vto get-global-proportion
$ g6 B' v' b8 O" c- Jifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
& p4 m* q6 _* e6 _# F) e[set global-proportion 0]
* p0 A" Y6 s$ c& z# D6 `[let i 0
2 s' r  i3 p) I9 _- M8 W1 dlet sum-money 01 \$ V9 U; Y9 [& t3 K/ k
while[ i < people]$ N: O% X" w  }6 P/ e7 B
[$ {- y1 C  i3 r8 I1 q
if( length (item i
+ q# N0 r5 u. t5 q/ Z- A[trade-record-all] of customer) > 3 )

- s- C; |3 H/ c# Q: X8 C. G[) S4 k) A- }) B! Y
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" p! m+ g/ C3 o6 B  y3 g- J]% n& {5 m; i' g1 {. d# g" \1 b# y! [
]
3 f' O3 J/ s6 q- Y- Dlet j 0
- L0 {7 U: w# Clet note 0
% }) q" h5 X! ]0 m1 U# ?! twhile[ j < people]" |/ _# t/ x* B( }1 s* W5 @, [
[( {- C# E+ v7 d" g1 F) k" _& Q
if( length (item i
/ n/ l+ B1 ~" B3 \+ l[trade-record-all] of customer) > 3 )

& R8 b! r; D2 o6 T) C- O9 B8 N# q[
! ]2 Z0 Z# z7 V* p6 R: g: aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
6 P: p+ h3 O$ E) s$ N[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
* u# C+ g! g) a7 u% n6 r[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
/ D% B1 d0 h8 g$ C]
$ G" F) W. S. S6 [; _+ c]2 ~) ?4 a# ^, Y; a/ y& G! J0 T7 W+ [
set global-proportion note& P6 ]8 x6 n( T; T
]2 G5 o$ z$ h3 G  U6 H% |
end
7 M1 I& a8 {6 k( a, M
9 x- j' k% |/ ]! m" `. v0 Tto do-trade/ A4 c* X' k* e7 ]  X
;;
这个过程实际上是给双方作出评价的过程
, I& a- t% c5 C( ?) @set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价* j) s6 R5 d) G" b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价- F. t+ S; Z: {7 g
set trade-record-current lput(timer) trade-record-current
5 |1 b6 r5 w5 {3 p;;
评价时间
7 S' c9 r9 n7 u$ C  h* Q& O+ F- rask myself [& _! x3 l3 w; C& g4 k
update-local-reputation4 T8 ]! r4 Z4 ]. I5 d
set trade-record-current lput([local-reputation] of myself) trade-record-current
. z5 T3 W8 L8 Q1 b  B# _]
" u0 L$ U3 H3 d: Q5 rset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
  D: _, G" w; d" f; @6 Z;;
将此次交易的记录加入到trade-record-one+ N) N! J8 z. ~6 H3 \
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  c/ A8 g4 Q8 d! p6 Xlet note (item 2 trade-record-current )
; @" w0 H/ F; _3 h7 _' d! m  Gset trade-record-current6 i& j- x% I5 L9 b: v$ v8 _
(replace-item 2 trade-record-current (item 3 trade-record-current))
" l* a& V4 D% t* g
set trade-record-current. J0 H9 s8 W7 n( ?
(replace-item 3 trade-record-current note)6 M  c: [4 z  Y  ^5 T; c% q2 W
! d2 T% L$ H. i& g* t: r* y. T6 G
2 @$ w6 {0 {2 ]* B  y
ask customer [
( @- T+ ]. T9 B& N  g" @$ s/ nupdate-local-reputation8 Z4 U) J8 P. e- _
set trade-record-current5 h; d( {4 v6 I$ {4 n2 }
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
% }5 {. i; A7 l8 O4 I/ \
]
* Q" q5 E' i9 w/ Z; s: K+ d" i2 D% ?' \4 i: Y1 {2 C

; Y7 O8 [% y: {1 T+ e- u' v7 uset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
" _5 ]" K' k8 c& w
. s1 A! ^8 L, i0 T7 ^' O
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))& h9 ^  F* `+ z1 U
;;
将此次交易的记录加入到customertrade-record-all1 b, Q  z5 D8 s5 s
end
. C6 _, N( N5 z
- A* [! `4 M5 L: h3 c2 [to update-local-reputation
! t1 `% V( |% e. C5 a- e4 Aset [trade-record-one-len] of myself length [trade-record-one] of myself5 g. f; X% A* `( ?) M$ q5 b# Q
5 m& `% p, z  F) I2 u1 O

9 k* x, c/ C2 p8 t4 j;;if [trade-record-one-len] of myself > 3

7 o- T* R" Q! u1 M/ R# K/ W1 Kupdate-neighbor-total6 y" q) x) y  B& F8 d# F
;;
更新邻居节点的数目,在此进行6 m+ ^0 r8 |9 o( T& o# F. f4 w
let i 3
, j: W; ^0 L" q* x$ |& Elet sum-time 08 l" y5 L5 B3 J' L" a* x; N$ z
while[i < [trade-record-one-len] of myself]+ D6 S7 _1 m5 p  c
[. N& P7 _/ P  u" A" S) ~5 r
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
$ F) p4 B: o4 q% Nset i
& _4 B. _. H; D6 G* q( i + 1)
1 r7 C3 J4 {3 Q+ C
], D$ x! D9 Z+ _4 I! O1 u  x  _9 s9 o  Y
let j 36 |, |) t/ Y- R7 a! Q' Q
let sum-money 04 Q1 N. T9 w9 u: o  C  ^
while[j < [trade-record-one-len] of myself]
' d# _* @' X  S1 D& {# r[
* O$ G7 _5 A7 W( h+ @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)- T+ h8 k- t5 U) U: P" Q
set j
9 j8 R2 w* Q6 K. y6 M6 {1 I: z7 d( j + 1)
7 z0 F. Q. I% w3 r
]
% z" p# h* \9 S: b& B' L$ p" i; P( N& Wlet k 3
6 H' C0 L* m) W' S/ d$ Klet power 0# U6 d1 `: D0 E+ ]
let local 0
0 }9 U' p3 f# iwhile [k <[trade-record-one-len] of myself]
. ~' U" i: u  [7 Q[, \( {, |' w8 v6 d% t" B
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)
; J2 r: [0 W$ F' D/ a5 i+ ]8 @set k (k + 1)3 F6 t8 l) v4 }( @5 f/ D
]: h, c* Q2 z2 r4 ^. C, P9 z
set [local-reputation] of myself (local)% c+ v% @' W2 B$ }5 K; m3 D8 o
end
$ x2 H, i7 `* \6 E0 J8 d/ @. ?, v8 R" _* g; x
to update-neighbor-total% d2 M1 L( N, ~! \5 \: h. A

+ [) c; r7 X# X2 @+ R' q# h/ Vif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
$ x  g0 r' Y1 p& U
  K9 x* ]1 `% Q" U7 S. m

8 C: G3 E7 d. r6 J5 A; D' ]5 Send2 a( t7 ?& j" g
* m# v" C+ k4 d* a
to update-credibility-ijl 8 S0 F2 r" b. c) a+ Z5 U! a8 C' e
# f8 u4 u$ F1 |& ]6 ~" Y( f
;;
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。
0 g; {/ `1 Q& z9 {let l 0
( F& k/ @- x$ K4 ]& K& y# j8 Cwhile[ l < people ]0 m: ^' Z& A- d
;;
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
1 n! J+ m2 v. [) Z[
- H6 q; |* n- U5 @3 C9 U& q$ Tlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
: d2 O& G5 O1 S; w/ Q+ `5 |if (trade-record-one-j-l-len > 3)8 W! P5 b8 Q6 X/ \( X; H' e
[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-one7 m0 O: N  G/ G+ I! C0 r
let i 31 O/ l9 j* v' a
let sum-time 0
4 X4 Z; C* Z( Kwhile[i < trade-record-one-len], E8 O' Z& A8 z0 V# B
[
8 n; o6 A3 G  l) G6 o, [$ q7 V& x) Q$ q' Eset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )5 ~+ ], Z, o7 H% _& w
set i3 f: T7 G/ F9 }3 a
( i + 1)

! U. ]2 n2 d' Z% }! f]7 _6 K# `1 I3 I$ e) F% J
let credibility-i-j-l 01 ]) {9 N' f, [+ N/ ]3 j/ @
;;i
评价(jjl的评价)
9 p  e' p0 _/ D% ~let j 3' i8 t$ l; ?" y) P" V: I" ?& h, \
let k 4
) p$ t/ J- l6 e. m0 T- D( `2 Mwhile[j < trade-record-one-len]/ M2 O7 u9 y* x
[. {6 l8 k  Q1 ^/ f2 X' }" G# w
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
% F" L6 C" Z) K5 o/ n# j; o' Xset 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)
# N! Q+ d3 H+ `0 @0 b3 Zset j6 \  q' B4 t3 ^9 x9 D  B
( j + 1)

+ F9 ~: }( ?) c2 x+ E* o]
4 @. H- S, L, B0 s8 U1 Q  \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 ))  I  b- o% i7 M& V' d
( E! E9 z: H& q! S  q8 W

% A: {& o" N/ u& }# D2 Clet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ l, ?5 B( i; ^9 a' _) B! I/ p
;;
及时更新il的评价质量的评价5 h- J7 j% V9 K- V" A1 e
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]( F$ V4 g9 U; ^  e
set l (l + 1)9 v6 a% V; C# }  j; {
]
1 Z+ _6 Y( u: d/ z' Gend4 F+ U' q1 ]% p0 b8 M4 I! @! F1 s
% Y- m( Q( N( C$ o
to update-credibility-list
* x2 A0 c9 k& G9 Blet i 0! w) K6 _4 {! |; d) a0 ?+ p
while[i < people]
7 D/ G6 x) m+ ?[
/ _, T  Z+ N0 n" X9 Nlet j 06 J' V; ]4 H& I( t; i
let note 0( m/ W/ @3 |9 l5 |0 \# m4 \; l
let k 0) j6 @. _; v1 T# T* S6 U( K
;;
计作出过评价的邻居节点的数目$ ^5 Y7 s. U4 g2 n# h( {
while[j < people]* o+ q( s3 l$ U7 n
[
7 Z: q: d' I5 |- {" g2 u0 [if (item j( [credibility] of turtle (i + 1)) != -1)
. b; M0 d9 ]9 V. g9 \% I6 u' Z;;
判断是否给本turtle的评价质量做出过评价的节点3 ]' f3 v/ h, t7 ?5 v6 T1 ~
[set note (note + item j ([credibility]of turtle (i + 1)))
! v( C& ~6 N' t' O$ R  `: p" U;;*(exp (-(people - 2)))/(people - 2))]
/ v2 u/ t7 T) f/ C: B* C
set k (k + 1)
8 q+ ]" H8 N5 @9 `]7 D9 v" K, ?- F( f1 i
set j (j + 1)
* k: @) j+ i  `6 |# L4 j- a5 R]+ c8 |8 N- a& K
set note (note *(exp (- (1 / k)))/ k)
; _0 {0 i. A6 ^0 \* nset credibility-list (replace-item i credibility-list note)
( d4 m; o  ^0 s0 S5 b6 eset i (i + 1)# p$ f+ o; q+ R7 |# h# K. j
]
$ F* s# i; q! z3 Z# N6 cend
( R4 L, q# O  m( u
) Z2 s2 f' n: Vto update-global-reputation-list
8 b3 W  i  t' L; vlet j 0$ |/ i, P. V2 ^8 X, y5 }5 @, S
while[j < people]" t: h& v  x7 O9 D
[
4 u: L3 S1 e$ n& m; l0 ^( zlet new 0
& q1 A9 ~) r+ z& \; s3 L;;
暂存新的一个全局声誉( n( w. E3 ]* u" @
let i 0  O/ E, w7 f* x4 x5 t- E0 T
let sum-money 0. j+ w6 J2 j) F( U+ q
let credibility-money 0
. F5 N5 C4 [- {( p3 S0 Awhile [i < people]9 m6 Z9 {/ ]( Y. b  {
[# \7 ?/ z* `3 O$ \
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
( I$ l' p6 y( {set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
$ X/ F- A' z6 C% R! Aset i (i + 1)
# d7 d  i6 e& z8 \" U9 B% \]
  S& n3 }, j. `! H* J' Xlet k 00 \3 _* `6 o6 F3 E/ Q
let new1 0, E) N: R0 F4 P
while [k < people]& H$ z. H! ?1 x2 P; i& F  Y, s
[
" ~+ O7 ]* ]2 z; W6 vset 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)1 s  q& _3 [  L2 b- S
set k (k + 1)
5 k. n( `, h/ \: d( p6 H/ w]
( g' l: B2 z$ Y. ~9 `" O  Bset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ; G9 u! y& B$ F$ O, y
set global-reputation-list (replace-item j global-reputation-list new)
' i% M$ x2 e, y- i, [5 H* C$ W5 Iset j (j + 1)
; S/ @3 S: u# ^  q& w, V]
2 U+ s5 @! w# v4 S$ }) Gend
/ Z% X# [0 z: O0 F4 c) B; A4 T) x( @$ e! y
& E7 D3 R2 Z* M5 w4 U" \* o

2 J6 A6 y1 K$ rto get-color
4 d% k" U1 T+ Y$ ~5 l. k2 }0 {3 E3 ~4 ?1 i0 V2 V; [# \
set color blue
9 e* ]4 D( L8 k3 K
end
" I: }3 D" B! d$ l) H& j+ u, g& P/ G- j2 a9 C
to poll-class& r4 X1 v% ?* u* q  q
end
7 p; t9 y$ z  h) j+ M" L6 K0 s5 G" w! I' n. R# |
to setup-plot1" }) C- J! \4 ^! [, B
: U& p* y' m) l" |6 ]
set-current-plot "Trends-of-Local-reputation"
" U; j0 y0 F" E, p

. W" {. V% A( h( k0 uset-plot-x-range 0 xmax
3 a6 x$ i! O" R1 E7 a$ X8 l. [

. W+ h: m# o4 V' Y4 b8 F! oset-plot-y-range 0.0 ymax

" X$ l4 G9 J8 @2 H) I' s' eend
# B5 x7 F, g! e% j% i
. J0 I- c1 q' p5 Y5 z8 `to setup-plot2' C, ^6 R% B( T# ]+ S8 t; e* N

% X, Z* p  m9 H3 z3 Mset-current-plot "Trends-of-global-reputation"
$ Q/ H# W3 ]- l) x. N0 T
; N8 Q2 `6 b8 `1 j. M3 A1 A
set-plot-x-range 0 xmax
8 u8 Z! t: D9 w3 E
$ q5 {/ @+ u0 p8 m- e
set-plot-y-range 0.0 ymax

9 K5 w3 N9 b% K% j! b& v/ Nend, Y# J$ X& A( l) J  [. G
# P5 |- g4 ~8 O7 Z0 W2 s
to setup-plot3
+ f% k- s% {$ q$ t4 x$ M7 |2 f$ F3 W& a. F
set-current-plot "Trends-of-credibility"

7 a$ I9 @0 G/ }/ k# f. W3 q4 h* K% K) |" R
set-plot-x-range 0 xmax

' G. t. Y3 @8 W* J! s! p+ B+ w, A  D& ~9 E4 ^9 Y9 V
set-plot-y-range 0.0 ymax
9 i/ M% M+ o* G$ I% X& h$ C9 F
end
# }8 Q! }7 H) \3 [/ `
! G5 [3 e1 E% x2 H, R& z/ }: Pto do-plots" w$ l2 Q5 ^* p! Y( ~" K* h1 f: F
set-current-plot "Trends-of-Local-reputation"
' f& z/ _! _2 x2 Z0 j+ [5 u" Eset-current-plot-pen "Honest service"; u. O; w4 v, s8 p$ b- R% C
end* Y3 n" Y0 H/ Q" a% \! J, @( D

/ g4 o" E" d$ Q5 j0 z[ 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.2 Q# q0 u1 J& o# U

- ?  N. a3 P& c/ X4 v  O' [  q9 T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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