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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:
) Z) c9 n5 a% m2 W6 Lto do-business
& Q- f+ u( r( |+ a2 G: { rt random 360* Y  k' a. o/ D% F. P% d5 M
fd 1
8 \( o1 x& i. ?- k* e, K5 [; q! f0 x2 ^ ifelse(other turtles-here != nobody)[
$ y8 \/ u: T- ^6 z/ Q! z8 U* O" L   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.7 U: i! \1 D- S  T0 |* m6 g
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ( Y8 M+ F+ ^, d; V# f: R6 i
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
( J8 I; d! Z! t! W: V! H/ U" C   set [trade-record-one-len] of self length [trade-record-one] of self
3 y9 y, r( @) e! _9 a3 |   set trade-record-current( list (timer) (random money-upper-limit))  x7 }5 }$ Q- q2 z8 ~, }3 ~
% G" y! v% L9 p% A; v& d
问题的提示如下:% P/ q, h' y6 Q- ^6 z
8 Z. p8 K3 z  T- _! }
error while turtle 50 running OF in procedure DO-BUSINESS+ b+ ^7 H0 ]) {1 T5 s
  called by procedure GO
7 q3 {0 o+ c9 S# ZOF expected input to be a turtle agentset or turtle but got NOBODY instead.
: d% P( O% [5 c
(halted running of go)& V* U- T1 U% T2 N

1 ^7 j) f. {' e0 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~~5 u1 q' U( X* m  b0 N& G3 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0 @7 d- I+ x+ H1 H, ^! U
globals[* u& P0 R4 ^1 k6 w# _! P9 ~3 x
xmax
" G3 k- e# {+ F  C( R4 g$ U" Mymax
+ Y/ j+ t2 D( ~  M6 P, x' lglobal-reputation-list
( P) O) T+ I3 F. z* L2 b! {. J1 m; w6 q
;;
每一个turtle的全局声誉都存在此LIST! Y7 B6 G2 {' c5 C6 t  E# d2 q
credibility-list
1 b1 `& D$ u) ?2 O% k* n- s9 u0 ];;
每一个turtle的评价可信度; |1 C- d& A: e- E
honest-service
( Y5 T; \+ ]3 E* B; C$ Gunhonest-service
) s8 a  W. y0 boscillation
% y7 \5 j  _9 `- w$ w# irand-dynamic' h3 c3 p* y9 d; A# U2 m. |
]( Q  }4 v0 y; M% W! @
1 R- r! w7 c4 }3 \  ~( t+ Y
turtles-own[8 _4 S, a/ X9 G' U+ J7 o
trade-record-all
: Q4 q/ |- k$ o;;a list of lists,
trade-record-one组成# r5 N+ P; ?4 ]/ r2 I
trade-record-one
% s& F1 M5 `4 l/ H+ B! t;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
0 U( ^9 U8 h8 c$ r7 s. P2 s
* _% B0 s! G0 T3 k8 Q' V; K2 f! r' f;;[
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]]) [6 {1 X- ^' Z) n$ e
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]. V$ ~3 o4 L1 ]& J! ~
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list6 R" p7 P+ w& C" e
neighbor-total
$ H) i3 {3 `. X1 |; ?) k;;
记录该turtle的邻居节点的数目
5 P4 ^( E) C7 f4 ?5 X# L, i! u5 q- vtrade-time1 l7 @: V# C. K' o7 g" y# |) D
;;
当前发生交易的turtle的交易时间# Q' L$ z; w. \; X# l
appraise-give
! x' ~9 H! U0 L; t;;
当前发生交易时给出的评价
& k: Q: {, `1 O* }appraise-receive1 V. q0 k2 e0 U' ^% {, ~8 g  @' J
;;
当前发生交易时收到的评价
" w9 r3 @9 H# x- u% Cappraise-time2 H2 S4 c' X( b2 H
;;
当前发生交易时的评价时间3 |( P$ e. V4 V
local-reputation-now;;此次交易后相对于对方turtle的局部声誉% L" O' i  z8 _
trade-times-total
+ b( h: f8 E8 g8 I; R* b;;
与当前turtle的交易总次数
! ~7 `! y4 U" Btrade-money-total
- N' {- L/ a& I* O;;
与当前turtle的交易总金额2 c" e: k, t" I  b% U
local-reputation
$ W. Q8 ?' `* C" mglobal-reputation- q$ z& N6 I5 |
credibility4 k8 `* q; F* F  N
;;
评价可信度,每次交易后都需要更新
% O& I0 Y( w( Y1 c* N8 Ycredibility-all, q, m) R& O8 Z
;;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$ [( O" R/ k' p* P
, U9 G1 _" |- l5 A
;;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& ^3 f; z8 B# k0 ]
credibility-one
1 B) b, f9 ^# N$ ~9 u9 a  D. ?* ?1 T;;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  ]2 b2 ^5 l% |, k& E8 R* s2 x
global-proportion! H3 O& _9 C/ o2 d# I# H
customer
$ V& S( Y: n2 N/ pcustomer-no& A0 b+ v7 }" ^% k- w# d
trust-ok1 \7 M  |& e0 d: ^
trade-record-one-len;;trade-record-one的长度
9 ~: q8 D5 v, I7 u& |]- @. F" D% H& M: C/ [
: i, b: U  g; H/ t8 E- m
;;setup procedure$ M0 x' ?3 v2 I8 ?$ M: l! L

0 d1 O/ u+ X/ X: ?" dto setup* [' q. _4 K% \  V

% a* P. z3 g& L. p6 M- Uca

0 W* I8 L; }1 X) a1 o6 H$ m6 o, w* C
initialize-settings

8 C( a, M1 y5 H, X, V8 R
& j# l: \& V3 V# h+ p6 X/ l, Acrt people [setup-turtles]
# [. v! y4 r# S9 T2 s( x
$ ?) \# ~1 j% e; h- o' u
reset-timer
: L4 v* _* e3 B/ [4 ^

1 I' z1 V/ e, M* B% q  Fpoll-class

) g( ^9 b9 d7 K! i) j/ h
1 e, ~- ]0 ~: p0 w- K+ esetup-plots

/ W% q9 T9 L! Y9 T. X6 z. }* \% r
/ d3 q. ]( A& E0 D' ?8 o4 j; Edo-plots
% u/ k4 u/ ?1 D% e
end
; B3 I2 ~2 j6 }' Z9 R& d9 N9 j0 Q& ?( T
to initialize-settings
. ]4 ]: q7 {/ `5 t! p; w' ~2 ^1 s  n2 U3 \5 P8 s
set global-reputation-list []

* _3 e& O8 M  q" [4 g+ F  d$ W7 J2 m. _/ C7 K3 M7 @' r
set credibility-list n-values people [0.5]

' [9 A0 a+ h9 k4 w" J2 {6 K4 \) G2 _! h. }, J* H! V; Y7 T
set honest-service 0

0 G% Y- x# a+ v
6 Z0 O8 @6 a0 n- ^set unhonest-service 0
8 ]" v3 F, R0 g4 B* h  G

9 E0 k- |; ~" o' D' {set oscillation 0

8 L3 ^* c! |6 M7 _) N$ m) F/ B' Y; b# ^& i
set rand-dynamic 0

" W5 s/ ^1 N/ R, G2 y0 d/ zend
0 |" d( g$ p# b* R1 L8 F) R  q, P  r, Q( X# D) u7 E
to setup-turtles - T( L9 a0 d9 ]9 G( g1 e& ^% Z- g
set shape "person"
; O9 Y- @, b' w( C9 T% k+ dsetxy random-xcor random-ycor
( ]7 ]3 f8 X, ~+ L5 k1 Gset trade-record-one []
6 f- f0 J: O( Y5 g0 ?/ h
0 ~7 \; x  ]$ @, z: `
set trade-record-all n-values people [(list (? + 1) 0 0)]
0 j: F# u& W; R0 p' @. X' z
5 I0 L- X. s" p$ z" R
set trade-record-current []
( T! v9 `. U: P$ ^+ _' z/ {' ?/ Aset credibility-receive []3 }, g: u. b$ h
set local-reputation 0.5
/ B$ r' l8 J6 A) z4 I3 O; }1 Vset neighbor-total 0. n# r% ?$ C2 n% v3 y. k% \
set trade-times-total 0' u5 {2 g# C8 X, D& I  L* O& A
set trade-money-total 0
4 i9 W3 s1 a$ i. n" u6 K, U6 N" dset customer nobody
1 \4 x& q4 x( x+ n4 ~7 Mset credibility-all n-values people [creat-credibility]! q2 T* d, U( H- ]- A, z$ k, O0 h
set credibility n-values people [-1]: d' ?2 W, ^3 g
get-color
& [) [! L" K$ a* I- n5 G8 T; N

0 _$ ?* `, x% V+ E9 Kend8 D3 d/ s! `4 T8 ~
9 {1 [0 c" h# Y( P
to-report creat-credibility
& g3 C) O8 z% C7 @report n-values people [0.5]! U" {2 ?7 x# t! q( g
end
' k; o+ \  L' x* a7 x
$ p9 b; \' c8 e- pto setup-plots. s( O0 X4 ~$ ^; n* @
" v6 {' B7 }3 s9 _
set xmax 30

4 @3 C- O, ?+ q4 {/ @' }5 c( G& s) Y# r5 }7 G$ e! J  h1 V5 h
set ymax 1.0
' x1 h/ n! s% z& G8 Y3 W: t& K6 S

9 @, H3 \$ x8 p: V. G. lclear-all-plots
+ z- `2 ]" s8 P/ H8 c8 O9 G% P
+ ~1 R' U( j! A% }5 l' }7 L4 ]
setup-plot1

( @1 B: \" H& c! V! ]5 h& m* P; l2 P$ X) I
setup-plot2

* G1 \( z9 q. n: N: N  r8 |4 d' T5 f7 L' D
setup-plot3
! Z# H. E5 ~! _5 Z& j. {+ \- F
end: y9 H# z3 o. J( Q+ |
) H6 k  e' c& ^+ L: T7 ^
;;run time procedures
* l: F; ]% T* I& a4 v) Y9 W& T' U* ~9 c2 ?+ e! A. Y
to go
* G  d8 y# C) g+ |2 r2 i) `' u, t) z1 w, ~
ask turtles [do-business]

% i+ U4 i7 A0 l# ?9 X( @end8 h' M# Z" K& o5 k

# G  H$ n( }- |; Vto do-business 7 s6 z$ q4 `) w0 }# Y

, f0 h8 @  h& p( r7 ?% H8 i/ u8 S% ]+ Y5 v. u7 H1 C
rt random 360
6 B6 _/ }3 z3 k: K* F9 h2 o/ \
( a4 C) s, j: f* m5 A- C  S
fd 1
. w% [! L. q" B5 h6 l* L) w% |% x& T

: W* W* j( ]% z- x$ yifelse(other turtles-here != nobody)[

4 g9 Y4 v1 |" Q. S
/ t3 c4 T3 m' E6 Oset customer one-of other turtles-here

' x0 Z. [1 i3 z6 p. R1 t/ C* `. {2 d/ W) ]# V
;; set [customer] of customer myself
% R% ]' g) y! A- Y  L) R

0 c8 a2 E4 e7 E* P9 E  K; {+ Oset [trade-record-one] of self item (([who] of customer) - 1)9 s# c8 D' ]& P4 C1 k& u/ D
[trade-record-all]of self
  S# `" X. z1 h6 C;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* Q* a& P- k7 s$ m- v9 t0 G
! {! N% Y  B9 w1 B( pset [trade-record-one] of customer item (([who] of self) - 1)
* E& F' W7 x- A8 U: t) Q[trade-record-all]of customer

9 W% \& O  @, |: ]7 W  K- T4 {9 G& D+ B2 q7 i* |
set [trade-record-one-len] of self length [trade-record-one] of self
4 \! ]" N1 Z* C, U. F7 f

2 Q4 \0 q  C4 ?- W, O: Cset trade-record-current( list (timer) (random money-upper-limit))

: C  ]$ p8 w- h; g0 y3 I( n* W& U2 t' v- q, h1 v, b$ ^
ask self [do-trust]
2 R- n# V* L) A8 w;;
先求ij的信任度! C5 I7 l. j3 i& r& s/ v
+ s6 {- n" I2 `( \) m+ F
if ([trust-ok] of self). a) t" p1 i2 q, |) P& j6 j& s
;;
根据ij的信任度来决定是否与j进行交易[
% n. S5 c3 r9 e4 E- {ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
" K& H- ~# e6 z6 R" Q
. x+ p: x$ j/ w[

$ a5 K2 P) }, O2 {8 C
5 p. i  N8 }0 y! P# V" y+ X" N, Fdo-trade
& d- n1 Y* L6 j8 p3 _4 h) ~% k3 S

$ Q& p( d& L2 U* Jupdate-credibility-ijl
: j- E7 c7 o2 }4 y4 m" i/ }7 d

  l8 v* i1 `1 B9 xupdate-credibility-list- f9 U9 P/ C$ A9 }# a

, H% k/ c) j& n3 R
; Q& e9 f4 h8 ^update-global-reputation-list
( q: u5 h) u" n) |

9 R( I; @0 M4 ]( S& `8 I& R5 N/ }poll-class

" {/ w! i2 X* S( Q$ \  q1 }
0 D4 k  ^- r7 qget-color
2 D; Q& E/ z7 g7 a
* u* d2 |7 z! M, s' J
]]0 |$ |- S* a2 N% d1 j2 |7 u& [8 q

8 U) Z+ u0 w: `# L8 K! v: {+ c5 H" h;;
如果所得的信任度满足条件,则进行交易3 `9 j! ^+ T- C6 E; y* F% Z; I* e

5 x4 x* x( Q* |; z2 x[

6 `* M  J# y- w- k+ r$ Q3 r* O; m" j+ m+ `/ X
rt random 360
* X  [0 V1 a  F$ a
8 v$ n; ?7 i5 }: g
fd 1
3 m2 J/ z9 W( O# p; Q4 ~

* @* U0 i! t: {9 G]
, {# G& ]! z1 I: U

1 S( M" c9 Z; Z/ |' n+ ]end
4 Y' P1 N! \& e! H
) V9 l+ @% `, r: ~
to do-trust
# M2 l0 E  ]' ?2 [set trust-ok False
+ k2 v/ }" y  H0 s" ~: Q) c' t; o& g9 B* J5 x0 E( Z
( j6 Y% Z( X) A0 p
let max-trade-times 08 R; ]9 [0 S4 Y# j  z
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
0 }+ v8 ^+ U( M+ p+ Slet max-trade-money 0# \6 j) N* U4 X
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]9 J3 V. q4 Y" u, H
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))1 A! E. D9 M% f6 Z4 [$ q

0 j+ B) f$ F+ X! K. d. Z' _+ ?

# o; F9 w9 M; ^$ Nget-global-proportion
8 z( @. d. `6 n! R7 B  t  W# {3 Alet trust-value
8 j# p: i1 \* Olocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

2 b# y6 k0 \" w8 |! o5 Mif(trust-value > trade-trust-value)! J: y' @8 V2 k. m9 m1 Q, j2 j4 Y/ z
[set trust-ok true]3 d; l7 J/ C$ J+ W
end: d+ s! v4 v7 l, c6 z' M2 v0 v( p

% j3 w1 }9 c/ V- v8 s, w" K. yto get-global-proportion
7 d, N' h) ]7 u, |+ ~ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
; o- D% S, o6 h' n) W[set global-proportion 0]
" D. J  ~" ]' o[let i 0- H' ~0 m; E, I# j0 i8 B4 b
let sum-money 0( D$ C1 v  G9 G- O7 j5 _
while[ i < people]" V9 z; K( o8 }$ D
[
7 W( w8 C# \) H# H) D4 e* Gif( length (item i7 w$ a$ ^. z, T' D+ w+ C. q
[trade-record-all] of customer) > 3 )
& H" K4 ~. p) r8 }. F# P* X- K" y: @
[8 f% v0 o) B. a2 R0 D
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))! l! l9 m% _1 n6 ^# i  {. N8 X
]3 E" D! q1 v3 o3 [
]& U' y" r+ w1 w9 ~; R# E
let j 0' E5 r2 {, i1 O  w; A' r) i
let note 0( C, z) r1 m1 m. G
while[ j < people]
: P: h/ }& f; U" }; p+ J[
( J# g/ P. W" v! D" sif( length (item i
) a1 g0 {5 K6 g# w4 _  c[trade-record-all] of customer) > 3 )

( g" r  }# Y4 R5 Y) j) y[
& ~# j2 \( t" e3 W& bifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
7 ?1 Q; j& b% L: w[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
! R$ `2 w( t& a( F+ z+ j[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]! u* w! j$ R1 j' V5 j
]" m7 x9 p  `5 Q  u' p/ K1 |
]
( e; k' B" e9 n/ T4 {set global-proportion note
+ l1 s% x/ D+ V  _2 l0 K4 Q]( ]$ J; z2 t( t* m& R+ `. @
end
) n# d( X1 _$ B) E4 M1 Z2 C: ]" b! r- s* Q+ X0 b9 p
to do-trade: \+ {6 j8 K/ V7 n
;;
这个过程实际上是给双方作出评价的过程
6 M4 G/ ~. t9 i3 g2 W# uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
; o$ U6 p$ T& c+ Kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
. Q' Y5 B+ r1 I) {7 |0 k1 zset trade-record-current lput(timer) trade-record-current
$ i/ x1 B' `4 w* D4 k  l;;
评价时间' h6 i6 v0 C7 R+ w
ask myself [; @9 i3 g$ Z5 q5 W+ n
update-local-reputation# @4 i; H9 i9 c& D' T
set trade-record-current lput([local-reputation] of myself) trade-record-current
1 U8 |) f5 s: X' r* v]
. \  x. n" |4 c. h- v2 T* zset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself1 v3 v* I& o$ g: l
;;
将此次交易的记录加入到trade-record-one
8 l5 v9 }, f6 c2 C3 |set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)( [9 l9 G3 ~/ i: z
let note (item 2 trade-record-current )
  b- I9 y/ U& H, Eset trade-record-current9 Y# @9 ?+ S/ v8 R2 A9 _. _
(replace-item 2 trade-record-current (item 3 trade-record-current))

8 x; z# i1 f- }& j- u3 ?/ w% pset trade-record-current
& X8 b6 D7 m* V! o5 R(replace-item 3 trade-record-current note). b2 }9 v! [2 J1 c2 v
/ s" c' @6 z7 N4 d4 r5 i

/ j/ m: Z3 t! @% J. iask customer [1 \9 n4 L' l! h" [
update-local-reputation, u2 K* ~1 _- o( h; D/ G, Q
set trade-record-current" a; O* `6 g. p: w, O2 Y, \
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

9 O3 i0 H: n5 K4 y* []& d7 L& r+ g+ e0 I
) l: p' t2 k/ Y# c# g6 y7 y

  ?* g9 w1 m* n3 Wset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, S0 z# i) ]4 u4 Q. h# Q/ P

, X& }% R: U! w7 W: c$ T* @: J( e2 Iset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))3 X9 G% p2 Z5 L+ \" C3 A
;;
将此次交易的记录加入到customertrade-record-all# g9 O, a# K2 T/ ?! g& Y6 h) i
end
  o1 d% f7 C" y' O' q6 U9 }1 @7 @3 z; c' ]% Y
to update-local-reputation  r! e  J# M- O& q% @. c, V
set [trade-record-one-len] of myself length [trade-record-one] of myself' b& T* P$ e: H- G* \4 ~
* _9 _# s$ G. Y0 w

- t: Y% _9 d5 W" S;;if [trade-record-one-len] of myself > 3

# H, C6 @: i4 s6 a  Nupdate-neighbor-total! m; q& L. Y* Z& @4 M
;;
更新邻居节点的数目,在此进行9 e4 Q8 ~! B; D
let i 3
  u9 N3 p- j% Alet sum-time 0
8 M/ ]8 ~7 l9 w! _+ |$ @4 rwhile[i < [trade-record-one-len] of myself]
+ G- x: i6 _$ @! R) {! k" I[
; T) G! q7 `; J$ f  a, U/ p& z/ H, }set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
# U$ F8 a: \% e0 d( eset i
- r* I* x/ N! g$ @4 w8 ~( J( i + 1)

& X; T8 P# S' P8 f/ z]- s1 }, i% S3 A# w' Y5 j
let j 3
, M+ ~9 C* s# }& wlet sum-money 0
, J1 h# B' H9 j1 \+ j9 l% J& Mwhile[j < [trade-record-one-len] of myself]* g& h8 ]+ J4 w9 _7 Q5 Z! R
[7 w* {; {0 D( B  i8 v4 i, }5 c1 d
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)
+ P8 U4 L9 |; ?1 Z5 Zset j
. ]  t& c. P# ~6 d1 i' H( j + 1)

' I& i6 L; p( q* T1 m+ P. N]6 |0 O, h) Z3 x# _5 r, D7 Z
let k 3
) a$ K+ t+ D; T, Flet power 0
8 ~+ R+ z, c* `3 m4 a( y0 C# W' Klet local 0
" y. p0 ~% H: q$ \  m* ^9 Jwhile [k <[trade-record-one-len] of myself]
# l* p1 V  R) W: N$ i) Z' K# k[5 H' Y7 w  T7 Y3 K
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)
9 A: H$ p+ U1 {. Y9 ]+ sset k (k + 1)" ?4 `3 n5 b- B4 [2 ^
]0 h- Z# J  a* D) L+ u
set [local-reputation] of myself (local)
! j& f# |, h* `1 W0 ^& nend
  `: @: b3 ^3 }; n6 [
$ \/ @  R( ^. @$ v: R9 P: D) N1 Tto update-neighbor-total
( Q' `1 R5 u1 L" ?2 M$ o
9 I2 ~) J' @" Z8 }* z/ H% jif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]# t2 X* {7 d+ |
0 J) U3 `  Z$ \  Q, c: \7 }0 `

( ~6 b; d" m, Z3 t  G9 D* rend
+ {2 W3 o8 `9 E( q" R# P5 a: H
to update-credibility-ijl 1 R  K! r4 F3 l' c/ p
/ u- T. p" N5 R
;;
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。
' W# j0 J2 K& f0 H$ J( H6 N6 xlet l 0
8 n( M7 T0 c# W4 f: Jwhile[ l < people ]
! I4 {6 `+ n1 }1 w* {;;
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. \: e$ l7 w& z, _* [4 D; B. ]
[
1 ?$ f! \  p& O$ a6 _+ r4 }let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
. P3 |6 f4 e, b. S: e! l# _( Cif (trade-record-one-j-l-len > 3)$ x6 K) C% |2 L& b& p% [) v. b3 e$ B
[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
6 `5 C$ W* u: d3 X. Alet i 3+ B* D1 V0 i0 ]" C
let sum-time 0
1 B' q- H: F" m  Bwhile[i < trade-record-one-len]
- Z2 T- m7 L1 A8 d[- g- s4 R3 ^$ [$ t
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )7 w  r, f3 h1 W5 j5 @# T* o
set i
. u7 r5 z' D  Z" c# h( i + 1)

* h" N9 A) Y! B' Y! ?1 ~8 u]( g9 a: C) _3 G" v; D
let credibility-i-j-l 0
9 r  ^+ ]! T. ~  _& K! f/ G;;i
评价(jjl的评价)
; F% @8 m  [+ `8 Zlet j 36 {2 }1 ^, w5 W. w, d
let k 4
! K6 g% W6 m$ C- a8 l4 `2 t: Twhile[j < trade-record-one-len]
9 e2 C+ K, Q/ x) |# F4 C# g4 P( Q[+ }) Q, p! s3 T! T# s/ }9 c9 W; y
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/ b$ @) \  Z/ d1 e0 y
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)( V) B* ?& S# z* `2 c( i
set j+ F' n6 j4 j5 D- C" [
( j + 1)
0 Q  P, E( i0 _& D: C0 B+ N
]. _! o- l, e6 C, D. X
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 ))0 R( C" c8 S4 Y0 q8 N8 c
4 `# Q% F- }7 B+ {6 E( L

. Q$ p9 \4 {; h9 ?$ m2 {. Ulet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
5 f9 o8 v( _- a& m! i4 Z;;
及时更新il的评价质量的评价
. X2 p1 ^9 c. u. }8 n7 ^$ Sset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]* x8 \% o& N8 l
set l (l + 1)
4 S2 _1 J/ a% n8 h1 ^5 {1 W]! Q" _, |; L' `7 D7 X5 @' H
end
+ X8 \8 V0 e; h* r! v( z
* t  [+ s6 u% {, _# S; W" Eto update-credibility-list$ @; t9 j3 ]9 i+ c3 q/ b, b
let i 0
, J: H# G4 G  K6 N- gwhile[i < people]* h# x' g/ q  x6 w# J
[- [' r9 _7 @: J+ ?2 _: v4 g
let j 0
, v4 e1 M1 R! [4 Xlet note 03 |) p/ u: j2 @+ g5 R
let k 0$ [8 k7 O( l9 B& T& P5 K
;;
计作出过评价的邻居节点的数目
1 Q: m  m; W' D+ z, Fwhile[j < people]' {$ i  @) Q% R# Q1 n9 y$ q* Q
[
% |3 [; m4 n( H( J: R- Hif (item j( [credibility] of turtle (i + 1)) != -1)
0 p" W  f+ {& Y! T, P9 c' y;;
判断是否给本turtle的评价质量做出过评价的节点
; I* n! ]7 |$ ^3 s7 U[set note (note + item j ([credibility]of turtle (i + 1)))
& F  v  {3 D# S; S7 ?;;*(exp (-(people - 2)))/(people - 2))]
$ o) S7 w$ M4 l% w# O7 ~! F, U9 x6 k
set k (k + 1)" [2 |. G7 ~1 j' f6 P$ l
]7 K4 |, j& {& A6 \& ?6 ]1 I
set j (j + 1)
: T6 N! w) n: c' T- E7 ^2 P. ^]4 E  k  `9 l' ^( V4 a6 y3 ~
set note (note *(exp (- (1 / k)))/ k)8 I/ M) o) K" F: F( |, C9 l
set credibility-list (replace-item i credibility-list note)
# a, I+ k' l0 t9 p" Iset i (i + 1). Y. F; {2 N( e, X
]0 G! Z' @0 h, B: b: h0 ^
end( E+ w  c) u, l' `( ^3 z% H

5 ]8 f0 A1 m; `to update-global-reputation-list
+ g' {# w9 x$ l. ^! ^' E* |9 V6 q1 F. slet j 0! M: {# ]9 n; \5 ~1 @
while[j < people]5 v7 d  j6 r2 D
[
% w9 r' Q. X* \3 V7 |! q* r' I( ~let new 0
5 J. t$ v4 {6 D4 W2 L! f. T% l( f;;
暂存新的一个全局声誉# {, N) P: Z2 A% F
let i 00 @3 y) `! l% n' d% Z8 @
let sum-money 0  {/ w* T: g, b; d' F6 M6 @0 H
let credibility-money 0
( Z* H! I+ @+ O. _6 nwhile [i < people]
+ Z" U) h9 M  \- f4 G& M6 G[
  N0 s" }) L/ u6 m6 @- S+ y6 ]. Wset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))- _0 r2 I1 N: m! ]: }) V
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
: F' L+ E" q8 J+ Q+ o, Bset i (i + 1)
8 O5 T  N, R! v3 M]' _! a. i$ }' z! k- M. Q) {
let k 0
9 X8 P( I7 R) d4 N6 ^/ d1 jlet new1 0
1 C0 I& {# Z5 X6 E5 Q6 T0 cwhile [k < people]
( E6 h8 B' y7 {# l) z' m8 F  @[9 O& z& J, p; h' i. j5 e5 |% l
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 l7 X7 X" R: G, X! H( B
set k (k + 1)
8 Q8 x1 j! M; V# Z]/ J1 H/ C; _6 m; t: H
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
3 ^0 s1 S9 J8 mset global-reputation-list (replace-item j global-reputation-list new)
, w$ w* \. d; W) Mset j (j + 1)
1 ?2 Y' k5 u# X: c4 c4 T]
+ @- f6 F; @1 p5 @: x1 A: kend  P* M, |7 R7 {) j: X9 \
& }5 a# X8 \& c$ P: h

; P& I* i/ z' S) D; n
) i- W" A, P* d7 u; yto get-color: f. L9 {- L7 o: _1 T1 `( C/ A

" n# i6 f1 U* z2 `: Aset color blue
2 G$ A) S; G6 G
end- L: X! K# [6 Y8 o
. O+ i9 m+ e: i
to poll-class2 c0 Q4 |$ T# J2 p& N* \2 ]: u: s
end% u9 m; S3 |. u, \. k* P

9 M  b( V( G9 y- u/ k! Wto setup-plot1
' N) F# u0 U+ d  ]0 O& _( J9 j1 Y: |. E& t, U8 E
set-current-plot "Trends-of-Local-reputation"

) W7 J6 x# p: A# f; v3 a5 N
$ r1 |, U- `5 J" vset-plot-x-range 0 xmax
9 Z5 I& }+ B0 Z

; J6 G) I7 }% D! ^4 T$ yset-plot-y-range 0.0 ymax
+ S5 c, a# X  k8 [8 f
end8 \. ]( g8 i/ P/ s5 P  d- f/ `3 U
& ^2 P9 |) ^8 Z# e& f. K; X$ q
to setup-plot2
+ \4 }. y6 V2 D8 v$ E3 y0 J5 Q- v: i1 c; v1 D2 K1 `
set-current-plot "Trends-of-global-reputation"
! Y8 p0 S; n/ ?- O5 N+ D& f7 Z
4 V- W& v( W* t. G
set-plot-x-range 0 xmax
$ l1 |9 J0 z7 M. m: w
1 v7 i; E" h6 }" ^. \
set-plot-y-range 0.0 ymax

9 q- J+ Y9 i6 ^  Z2 tend. m5 e3 K# E6 `
; v0 V# X. I+ Y1 u1 c1 i
to setup-plot3: c% f0 N5 k0 @

% C' h! Y6 P9 g4 L) P7 S$ Nset-current-plot "Trends-of-credibility"
1 r# B( p1 x& Y* y) S

- Y2 S0 Y" ~% c9 ]/ S8 x9 d  ]8 zset-plot-x-range 0 xmax
* s# B5 Y4 x$ z) i8 L; |, E
- H& M9 x$ {) W' S) y/ V
set-plot-y-range 0.0 ymax

3 p) M8 B4 y8 ]- `. I& eend
( m0 V1 [! M  J$ q8 t# K3 N1 d; K* A; @* S1 Z" o! h' l! n" J8 C
to do-plots: B# G, ~! |, @9 |" s3 i
set-current-plot "Trends-of-Local-reputation"; b( H3 A6 O3 Q! j5 l% e/ j) i
set-current-plot-pen "Honest service"
- ], L& P1 _: u$ Uend
4 A$ C% y( K/ }. L3 j  s- b# O( E
( U3 d$ r7 d" U6 g9 r3 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.
% V- q6 J2 S' Y. W5 S- q1 r3 n* @0 r, j' F) G* V) d
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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