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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:0 B, Y) A0 B& ?% L5 `
to do-business 4 ]- X8 U3 c( l# p6 I- V! k' [
rt random 360, v  t$ v$ t: |+ @7 _' m# ?
fd 1, N: s/ K; A* p, c$ i
ifelse(other turtles-here != nobody)[
3 {; |7 I$ V# j1 z   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.2 S! c# \- u  u+ X0 x, J0 q
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    " F. I  n) N# c
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 {7 J" [- r* {, f  q8 ?9 ^5 L   set [trade-record-one-len] of self length [trade-record-one] of self
: f! I% w+ Z9 P- s5 F9 {5 `" e/ O0 o" U   set trade-record-current( list (timer) (random money-upper-limit)); _3 @9 a5 o! `: _+ W

3 n( ?& \7 p+ d. X3 F8 t" q5 k问题的提示如下:
: l$ f2 }0 w, z: I; J' Y9 U
; q" V, e# P1 n0 e- F; Yerror while turtle 50 running OF in procedure DO-BUSINESS; d# u% G3 P4 e, A
  called by procedure GO0 D2 u& Z, V+ e1 ?: l
OF expected input to be a turtle agentset or turtle but got NOBODY instead.1 j: j0 Y4 T( F# J' J9 i
(halted running of go)
! Z1 Z4 E: Q6 f# n! ]* y
  x9 {: t2 ^! [( A* q, X0 Y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~~
( W% |+ ]& j1 D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
) T. y9 R$ m4 nglobals[! I4 \8 Y7 c- h5 j' k) t
xmax$ {' w  ~* u- g- g
ymax
1 n" u6 Y/ O% c# f* h# Dglobal-reputation-list& c6 ^% h" j3 c. G

5 J( e" P# K* Q* u;;
每一个turtle的全局声誉都存在此LIST: p. Z* o  n* l9 h
credibility-list" T: J, Z1 L6 P! u
;;
每一个turtle的评价可信度
0 S  k" n, q- C4 `8 o$ A6 Bhonest-service
/ d0 [& G( v6 x( [1 [# |- Zunhonest-service; `+ `# i! N. G6 E
oscillation- ]+ h, D7 g: h) Z' J" G+ F
rand-dynamic9 A' T) M7 S; P
]3 H5 T0 [0 d+ c  k' Z
! S! ^0 F! o  b7 Y5 p
turtles-own[
6 N( `8 h+ B* u0 |trade-record-all6 C( ^- }% B. N: N0 S4 I
;;a list of lists,
trade-record-one组成. ^# j2 P! Z; p1 [% ^" j
trade-record-one8 W/ M8 u5 ^* I8 I
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
  W( A+ L4 I$ x3 w4 V
8 v( K7 X1 i* {  E9 g5 L. c' G% X;;[
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]]
; \& `. x* D  {. Z; wtrade-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]5 v" w( W8 k' `
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
( Q# x2 I8 D% V+ H" \neighbor-total
" R# J+ S. x5 s;;
记录该turtle的邻居节点的数目
6 P$ N! O. m$ {9 n5 c; {0 q8 @9 t/ ktrade-time' U7 \4 I4 }- @2 [
;;
当前发生交易的turtle的交易时间. g. r) K- J, M9 j$ s; j: i
appraise-give
' m9 m: M! Q/ F2 `: k;;
当前发生交易时给出的评价
/ U8 ^- N7 `1 H/ U1 I0 @appraise-receive) n( H" y3 c/ c6 ~6 U
;;
当前发生交易时收到的评价
3 u  r4 l! G9 @" K! W7 A$ C* nappraise-time
2 j4 L$ _2 g2 Z9 d# a! h: \;;
当前发生交易时的评价时间
* L) u. j( |/ T) W# i; }2 zlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉1 l; o2 k& ~0 Z
trade-times-total
, P9 J0 @- R0 x;;
与当前turtle的交易总次数
1 a0 c8 U0 i. ~# Atrade-money-total
4 l& t2 H6 l5 f. O;;
与当前turtle的交易总金额
9 w$ M7 K$ V; q; I" C+ S1 t  Flocal-reputation
& K4 l& l! m1 O) o( h$ Mglobal-reputation% n9 M! R: k( }; W( F, o# c7 p
credibility
6 B% G/ k* K; e4 f7 `, ]( P% R' y( G;;
评价可信度,每次交易后都需要更新
; }2 U4 {! P( n8 c# x/ P4 a# l# {credibility-all8 U- D. c5 a. R0 i2 l0 y7 v
;;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
9 |9 L: q* z. U
+ [1 w6 v7 }" G;;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; H) d2 w2 H/ F
credibility-one1 k  k, G6 Z3 O7 K! y& t8 h
;;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
4 z" S, {5 P, @. B9 g# Qglobal-proportion" e+ i! c! L7 [4 V3 S
customer
" |, D; J' S! l8 C, e+ |customer-no
# P& D/ A9 ]; M4 [1 v! O5 |0 `/ btrust-ok9 _/ f# |3 a1 X0 h. ~) A
trade-record-one-len;;trade-record-one的长度
- `  E6 |( |# _, c9 E- q6 ?, {]
6 `& R+ d/ `7 h. w5 G" x# k5 e* Z: d/ K3 c- l
;;setup procedure
( Q+ s! M6 g) w( \. z" g
- Y. s' t8 ?" J. pto setup; k) j5 Q% K* w& ~

- t$ \& M1 U0 q) I/ B. y% C4 Y/ Qca

" i6 {2 {$ X5 c/ S  F5 S( C; d& }1 P8 ~' o1 p
initialize-settings
  w9 V; J7 H& x' ^& I$ u4 h- M

: f6 Z0 B/ E  ]& Q2 ?0 S4 V# @$ V! {crt people [setup-turtles]
3 x8 O$ Y6 C$ i: b- o
+ q" U  L' y+ i. i7 m
reset-timer
' A% x% |! c9 `9 ^/ S( v; {
3 a; H3 \3 E& T( W
poll-class
" [2 t! D& {+ Q' Y( L) d

$ ~: ], X+ c  K' U/ v9 wsetup-plots

1 w5 c/ ?) J1 w6 W# }8 h( g# k
$ T' z- T) T! i) @6 N- Y+ R2 b+ Cdo-plots

" B& f9 u! W/ a/ Q$ ]- f' Lend
0 o9 j! w9 |' z  Q3 Z8 f, F3 K7 y. `& y  @4 d
to initialize-settings
4 M3 `$ H8 H7 J+ }) V. F6 z9 X+ q  a% f4 ^2 m9 d) B
set global-reputation-list []

" O9 t/ {1 C% b5 I5 u/ a4 R( P8 J- X9 D0 _$ x1 c, x
set credibility-list n-values people [0.5]
, O# ^$ c. R' M6 I" n6 o' l
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set honest-service 0
1 n5 q* Q/ Z2 R  C. r0 L9 o8 P, T

6 F: X* W5 c% m+ `set unhonest-service 0

! v' f& C$ ~. B' J% u& c/ X  x/ |" b& w" d6 S
set oscillation 0

" S0 w. k  T5 ~, n8 E% t' ^# z' ]7 y( ]' `6 J4 l. }) M% u
set rand-dynamic 0
# J) d. Y) u) z( f
end
( o( V# P9 X0 G: R' W
* g+ m7 c: Y9 R8 N: }1 U( I2 ito setup-turtles
/ Z0 B5 P6 ^+ ^3 C. Rset shape "person"0 J3 S6 u* u. _; b  ?1 g2 H" C
setxy random-xcor random-ycor
7 ^! Y1 h* Y/ S0 D3 pset trade-record-one []' x' J3 b: L" @2 y1 W) L  d
. K3 P# B0 d, d1 ~; h1 |
set trade-record-all n-values people [(list (? + 1) 0 0)] 3 G6 S% Y3 `0 {0 M4 E5 z

3 a8 z2 f% h' tset trade-record-current []3 f9 c% T; O5 I) y9 V* S; A0 t
set credibility-receive []
) b" W1 H3 y6 g+ b. @% D8 m+ y3 Bset local-reputation 0.50 O& }( w6 z, S. v: y) S
set neighbor-total 0
3 N+ ]* u9 e+ e6 J( Rset trade-times-total 0/ [  ^5 H2 p/ }. \; c0 n, d+ E# X
set trade-money-total 0
/ E6 d7 l# ^3 }7 L) h+ ^# \set customer nobody( O! Q$ o, O# f  q. l
set credibility-all n-values people [creat-credibility]# A: y: X4 A- M
set credibility n-values people [-1]
. s" Z( F  A- B# A- K. p2 dget-color4 c8 b% J+ [( |' g' C6 k3 l
4 m1 c* \+ [& b: O$ ^
end
8 ^* _/ z2 X# l% ^$ M4 x/ I$ [# g) f8 C+ X  e7 t
to-report creat-credibility& p+ E$ D8 s  x. k% p
report n-values people [0.5]
; h3 n( A+ Z+ f; o; x, b4 Nend
# Y7 S" P' q) W) |8 l, Z% p7 J( S0 [" c" p5 o+ r
to setup-plots
5 F$ G9 p( n+ R" A% M8 V5 Q
4 @3 f' B7 |; U+ L# M! \set xmax 30

2 z! A$ n8 c+ V- K" C% ~# b0 H6 Y' ?9 I8 y9 s
set ymax 1.0
# a8 a. V% y0 k6 M

" d8 s. j& R" J% G2 N- Nclear-all-plots
2 s- S% }) _5 `$ j$ D; F
* U3 W( c* D+ N3 r' Z% u
setup-plot1

, z" G) g! {6 v% k& H- p* O7 T  p  u4 ]
setup-plot2

6 R( T  V9 P2 i- Y$ W
# [- T8 W. M/ _" i% V0 l  R* tsetup-plot3

2 f4 w7 B! F$ b+ q' |6 B; }5 Pend
! I% X! L  g3 B4 {' r+ B  C. ^  o" ]8 U7 k: i- ^
;;run time procedures' i% d3 R9 \* B

3 C' T1 w: T  k9 z: V) j$ A" ~2 ito go6 \0 n6 o0 e4 M
$ I3 e, j( F" t
ask turtles [do-business]

. B: P1 c6 B/ b) J& wend8 V* m$ J$ @3 |1 M3 \) @8 |

  h" \1 u0 {1 n6 p+ C& `to do-business # y5 S) D& E0 q1 H1 @! [
# B7 G  x/ ?# q, z$ M6 ^" P4 D
* G, _; b9 _/ o& k4 p0 G" ~
rt random 360

& w  y  }) W0 }1 o7 D  I: x
  M+ ?# X3 b' L7 c, ^/ {fd 1
  I2 Q  f7 u. a4 P

6 O, p5 e; [" P0 n1 difelse(other turtles-here != nobody)[
2 ~) p3 {# [1 f

" `' X: k& z8 xset customer one-of other turtles-here

% F! A' _5 [0 S$ `3 e3 k3 P: Z3 r% o- c9 Q* e
;; set [customer] of customer myself
, [( Y: r% ^' W7 x1 D" m$ B- g

2 r7 n. |2 e  K, v! `set [trade-record-one] of self item (([who] of customer) - 1)
! q* V1 [& K2 {' G[trade-record-all]of self, r9 ^3 `& K+ J. e9 [% ?( c( _$ H: h2 p1 X
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

& m6 j; l6 _8 c7 M$ v: ?/ p9 S0 j/ }5 A: y! B3 l
set [trade-record-one] of customer item (([who] of self) - 1)
2 b7 t* J/ m( Z! @! }! Q% G[trade-record-all]of customer
! @' G' r) g2 a) R- ?& H' @5 w
9 W  j6 W" A+ o  v. x7 _$ h4 [
set [trade-record-one-len] of self length [trade-record-one] of self

  V# \; T6 }6 k5 c( V5 l+ o3 D
% T- g- T  B/ |$ ?  S% \( K' r! \+ q) Bset trade-record-current( list (timer) (random money-upper-limit))
+ |! B5 h: T, F3 J

: q5 Z6 a* s  |7 i9 T4 _ask self [do-trust]
8 C% G- h/ d1 u* i  k, ];;
先求ij的信任度
; W- m0 H1 H) B4 B2 i! C1 C9 E/ ^) u! O* @! [) p
if ([trust-ok] of self)5 k/ V: K& A+ j% F1 u) B
;;
根据ij的信任度来决定是否与j进行交易[
- J: o6 H$ @1 N. h8 n# W$ }ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 Z9 `7 v4 q, E6 [4 d
- O' g7 A6 E2 u
[

5 J! e, u$ _5 |$ z) a8 D, x* P8 I6 K# P3 h  G" J+ F
do-trade
  Q& ^% C2 e4 p4 I( P$ r, g  N& l( r

- E9 M* S1 I, S; F5 q# M9 Dupdate-credibility-ijl
  |2 H) I4 F" k  I, _% ]* x
( p0 D0 `) k$ f0 X" O4 @. \( v+ t
update-credibility-list! y- i* T) ?3 R5 Z' p: P

/ x9 o  _' Q* x) b8 P* |4 r7 U
" r7 l0 Q! T( _, o# k/ l" R0 Iupdate-global-reputation-list
- O6 O$ R1 S9 F5 R$ |0 N. _

8 ?  }" o) `* S# o2 N3 upoll-class

; A% Y$ Z  a/ U6 T9 U# W2 W
, A3 Z6 ~' Z% P- v" B3 ]8 Fget-color
, p: |- N9 {5 k' D  Q

0 N7 w/ C* R) r]]) Z* t% j. U0 y, @8 _9 N5 L
# A  q6 Q, ~) h+ v" D! W# x
;;
如果所得的信任度满足条件,则进行交易
3 U9 B4 X' D  D) W' {% `% }+ l) h
  T0 n0 w# h  @: f6 v# M3 J! S* p[

) I0 s9 G5 j* f4 D2 V8 T& m  l
$ d2 o) _; d) P2 r7 o$ Frt random 360

1 r0 |0 y! S4 O2 L8 N* ]6 Y1 L
9 b8 t* Y0 a" O  x7 Hfd 1
  w' L$ D. O# b+ H" v

; Q# I8 ~2 [; x6 {* N1 h2 f+ O]
; y2 R- P: L) }2 ?

5 C8 G) A5 |' \" @) a7 bend
: c4 U* R1 M$ U1 _. y
$ S3 {) r% X& a  G' E
to do-trust 7 g" @8 u3 L/ B# L
set trust-ok False
, l! a2 L5 z& a3 \! Q: {
" ?, ~+ C: [, u0 V7 V3 Y5 E
8 N! Y5 Y2 Z( w* q. F& f+ z4 B
let max-trade-times 0
3 h- T0 }8 V1 P" F5 }* S2 ]; lforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]( f2 Z: U- m& y% |
let max-trade-money 0/ Y+ x5 G8 ], T2 Q" g
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]8 h3 z, o/ B4 T1 ^
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ P/ @; t2 X8 w) A% E& U( {, Z0 u* Q6 L$ t3 n" T

/ j% I  r, n; y9 K' o* N# kget-global-proportion
# O+ u6 M; Z& P4 F% alet trust-value
4 {' P2 R6 ^" w3 B# A+ Llocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

$ A: o: I# f4 qif(trust-value > trade-trust-value), e- V7 K# N" d/ M3 \" H
[set trust-ok true]" ~% Z* _! c9 V" O: v
end
) p0 i5 o5 ?' e6 P7 J) j; d; b( n: u4 I4 \0 E4 X2 x/ ^6 p
to get-global-proportion
& n- O  a' W. L, ?/ q0 [ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
" k( G" o% B# Q. s1 k8 Y! M, n[set global-proportion 0]
) u7 x: q2 T4 R: E9 C3 i: S: f[let i 07 c  d) i8 @+ f6 ]. A
let sum-money 0# S9 ]" Y5 p7 p9 Q2 Y
while[ i < people]2 a2 X: g3 D" K7 f$ r3 k" d
[' ]0 e" X5 ?: I) i. y; g0 o
if( length (item i; u2 ]1 F4 h/ M% `- T! @
[trade-record-all] of customer) > 3 )
* T# m$ Q# j4 C! o# F% d" B. t
[& }& g( e( O2 S* L: q9 {+ \3 A
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 `9 [$ _) O) T& ?6 }]# j* a! ?, O# A8 w+ x+ B/ T
]
$ }6 x& r" O* J6 ?let j 0
: i4 n" Q' e  L; R# Plet note 09 m1 |" K# L: n- z% U9 }
while[ j < people]' a! y% S2 ?- j9 @0 d6 t
[
9 e6 H0 ^0 X( }# @4 D# G. D: cif( length (item i
/ ?* m2 `2 u) g' g* g* B9 E3 l[trade-record-all] of customer) > 3 )

' v, l" ^; k# I6 C[. b) h6 `) X$ o1 u1 K9 [1 P
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" z/ B: v$ a4 x/ N[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]$ i! q. w5 m5 U+ [1 v
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]5 M7 i/ z( J- F- S* O
]
3 Q0 J# Q  l/ ]5 w- o' R- [/ N]* P* h: A+ B1 ~0 |2 Q
set global-proportion note
7 {9 X: Z9 N5 E! K" ?: K]$ w$ z, u$ d6 n% e) V/ F- \
end/ Y0 H2 N& p* G& i7 s; _
* W2 `. w" y2 H8 m( u3 v& o
to do-trade
$ Q% ~# Q# `- O% _9 A2 w;;
这个过程实际上是给双方作出评价的过程, ?3 x: F+ v; x3 ]6 ?5 B$ H
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价' J1 j- s5 {; `7 {3 X5 z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& G2 @* S8 l! `4 Q6 W& r! n) g# M
set trade-record-current lput(timer) trade-record-current# e% R5 U2 j- P4 u' L
;;
评价时间, H' b" B7 v+ J3 l! ]( A& l
ask myself [
# f: j. {2 k- s. b; jupdate-local-reputation' r7 {& \; z/ g6 _) ^8 A* r
set trade-record-current lput([local-reputation] of myself) trade-record-current* ]  I/ f; g& N$ ]9 c% x% `
], v  A) b' {) V9 A* Q. e
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
9 o; z+ D6 ~& [8 _, V;;
将此次交易的记录加入到trade-record-one
# o) D3 s* A% K3 A3 mset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  M) U, D# `9 m9 q8 b3 a9 vlet note (item 2 trade-record-current )
8 w% z8 N- ]; w& s& O# l0 aset trade-record-current
; @( C* ]8 P+ q' O: L6 ](replace-item 2 trade-record-current (item 3 trade-record-current))
" E$ H& u. @/ q! U% _) M
set trade-record-current* x, e' f5 \2 J! D6 T
(replace-item 3 trade-record-current note)  @. q" `! L( ?( {9 B

! w1 g4 _0 r' K( u: ]. y
/ M2 I* U5 i* B# J) Y" u
ask customer [
0 v' b5 I$ R$ q' L5 Uupdate-local-reputation1 q! s0 ]3 T9 W8 ~, [) _% f: z
set trade-record-current4 c# x* Y) Y  M% L/ W: A$ E
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

8 k( @; Z# k; Z]
" i2 i2 U: r! W# N# B
0 h1 o1 d0 E8 P: r
; k$ `* o, ?# B( f
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
6 g5 J( X  f* J9 e
; a3 b, u' r: Q- @: _+ A
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! K$ g: i2 X* X; G6 e3 D* U# _# ]
;;
将此次交易的记录加入到customertrade-record-all; @  s- L- j5 ~1 k5 r# p& W  D9 m
end' m! B! X* T" P- b4 T5 W# t
" z5 t% D0 h  Z( o8 g7 P
to update-local-reputation% s9 s' p9 s$ U7 u) A+ V
set [trade-record-one-len] of myself length [trade-record-one] of myself- U. X$ H  v9 X
8 T) E. S; [* c$ C4 `9 N9 H
8 \- r5 \/ F0 P4 u" o
;;if [trade-record-one-len] of myself > 3

. A8 _/ Y6 q, L, `update-neighbor-total
$ Q- K2 u; C3 Z- Q;;
更新邻居节点的数目,在此进行
  `* [* ?: [8 m2 _) R5 Ilet i 39 e. b* m( E* f$ l
let sum-time 0
% X7 O# f/ d5 {% Y7 Qwhile[i < [trade-record-one-len] of myself]
; B" z, L, _% g1 M[
, X% Y( Y7 v0 L7 |6 V. Wset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )4 H5 t7 n+ H" ^
set i7 M5 x" [& _, O: @" p7 G5 i
( i + 1)
  ^- ~( D6 i( l, a% w# X3 {
]
& A0 V4 l9 y; ]/ j5 ^let j 33 @( {, P8 F2 _
let sum-money 0
3 }' h. b2 k6 m' c% g1 |5 ?+ rwhile[j < [trade-record-one-len] of myself]
: O* d+ c1 x. h3 h0 g# E' x& L4 \9 S[
0 E2 P% T2 i1 o* Oset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)1 Y% ^% g) M) N! I* P
set j
9 Z7 a# \, \' t1 g, ^7 `  M( j + 1)

8 L4 [, p" m( f; d. G. G  `]" b! m( d+ v/ J$ c
let k 3
, d& X( g( j* I* klet power 0& A( i! q; w5 r( m# x
let local 0
3 S* r% r" m9 T; h5 Kwhile [k <[trade-record-one-len] of myself]
/ n, y! Z; O+ b- ?# q+ n" Y[7 a) h; }" Z& G' _) D
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)
6 p  }( H- S2 K$ N4 o0 N) Dset k (k + 1)( L7 Q  N3 p9 f2 S9 w1 M
]
# |) |9 _! j; Zset [local-reputation] of myself (local)
8 V2 c( Z; o* t+ A, [- B. E6 yend; \5 h4 B6 z& [& Y1 D/ p4 {" v

8 X/ u2 ?0 d, Y9 \7 N; ato update-neighbor-total7 U# h+ X. T1 j5 O& v* ]/ S
/ K1 v7 _8 [4 @( }/ V5 [  n
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]6 Z1 C; ~, L3 n, b

# B# h2 x2 R$ x' ]  g, Y0 l. ]0 F

2 a* E! C& f$ z% Send& |3 K5 N5 s. W$ W% ~
2 W$ I! ~% W8 Y! ?  ]
to update-credibility-ijl ( g/ d3 j2 @0 N

1 o1 q+ {' V0 s. X8 F: k1 C;;
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。. @+ o0 q+ o  y  }
let l 0
2 W! k2 }) \4 p# X/ }# n$ L1 P6 i2 Q% iwhile[ l < people ]
0 @3 `# H4 f& R3 K9 H: P+ E;;
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) C: t. |' p7 I6 v4 W& y9 A# [
[
, i9 O& |3 u+ w  p4 A) C& `let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" ^8 }9 q, Y1 B* v5 t) g% pif (trade-record-one-j-l-len > 3)
! {& ]! ]  W7 F- ][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 ~- A9 \/ \! j+ v. Y7 q: e
let i 3: u5 r- m, a1 \! E7 o( L5 d
let sum-time 00 L( B. ?4 N" I, u* n
while[i < trade-record-one-len]
/ u0 ^" S% ~% O[% V# {0 W  P0 t* ^) h
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ b2 A$ c. f% g/ tset i1 |7 V" f6 e# x3 C) [/ i2 ]
( i + 1)
8 r$ \6 R& e' ], K' p: A( Z) I
]
( g0 `2 B8 g% S% a. s! Z) Mlet credibility-i-j-l 0
9 U8 i7 U/ S3 w5 r9 R; w% Q1 `;;i
评价(jjl的评价)
! F2 o( o; A6 m; h3 alet j 3. ^! \+ X, c; [  O: {+ s
let k 41 m  b% [2 {: {6 ~: |2 u
while[j < trade-record-one-len]' s$ a; h0 ^/ \2 i7 z0 ~
[% t& d. o* M( V( E% E
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
$ z9 F7 a1 c0 m' x/ u& f/ Vset 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)2 X; [. s4 I! c; E$ _9 P2 l$ @4 b
set j# f9 }$ X9 m8 H% g  a4 ]: Y
( j + 1)
- S) V+ X8 |/ i' y
]
9 N7 A' p8 L5 y! N; I& ~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 ))- @) b9 k8 q* x  n: j! F( J
, k  d, D$ J, {/ t
2 M' z5 L5 {" J) S9 W3 Y  a
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); [' x& {( R; D  \: ^+ o
;;
及时更新il的评价质量的评价
* R& A( M9 I  [. O" j: J! i, B: a2 Mset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]4 O5 F2 m# Q: i0 a: a! H% [* U
set l (l + 1)
, D4 B7 z! ~# u! Q  r0 U& r* k3 A4 [/ G]
' p  m9 e$ j$ Uend/ b% I! {6 y7 F/ X- M6 W

" m3 t& G* _9 j4 L8 w+ P/ rto update-credibility-list4 V" y8 n! P& i7 v1 |( _! {& l
let i 0
0 O# Z& c$ U/ z" swhile[i < people]. c4 z$ X" l; J* E# B4 j) \
[) W3 @' m+ w. v' I7 T' F
let j 0' V  J7 Q+ f6 P! j# J) h: \; u
let note 01 @, L! ?  m: l/ ~, P1 C
let k 0! a5 b! P1 K  E3 n2 n# X
;;
计作出过评价的邻居节点的数目' c1 g. s9 \) ~1 ^  h$ P
while[j < people]3 r6 H5 f5 C. M, z; L
[
5 T$ S; h7 Q/ Z' O9 D6 s0 Jif (item j( [credibility] of turtle (i + 1)) != -1)
5 A5 _1 a. X- K. T' h9 P( W  K  i* S;;
判断是否给本turtle的评价质量做出过评价的节点  e6 [8 L: [) a
[set note (note + item j ([credibility]of turtle (i + 1)))* j' f' j6 `( b* e
;;*(exp (-(people - 2)))/(people - 2))]
1 E4 G4 w% O. g$ y8 i
set k (k + 1)5 v# k8 R  s( E3 S, Y
]' [( c9 Z2 n# M7 l. t. N
set j (j + 1)
4 g9 [* w6 k/ |$ c]
7 |" O% T# P4 O6 Q" e) ^set note (note *(exp (- (1 / k)))/ k)4 q8 l9 q  n2 d
set credibility-list (replace-item i credibility-list note)
) w' P; K8 P% ]set i (i + 1)
% _2 M% n3 d* R& M# L. ?0 i]
  ~" l7 F% }& S( ?end0 {8 W1 {' d8 C4 P) q
% k4 B) l3 D) L
to update-global-reputation-list2 h5 R  k# A$ ^* e$ g8 K7 {+ e
let j 0* j: H8 U8 L) }5 _* G) o1 ?- r
while[j < people]& P/ N, ?% l, }/ A3 b% z4 j
[9 K( \$ M: L# x, p% q3 K/ f6 S
let new 0
! S$ G& P( _) a& I( W8 M2 q. ];;
暂存新的一个全局声誉
$ N6 w0 d& i! [4 e3 e7 wlet i 0+ M- w/ T# l! w! \& z
let sum-money 0) `+ e) x) i( g8 U# }$ H/ Z$ D
let credibility-money 0: I0 Q. o5 d8 K+ V7 k5 c
while [i < people]) f+ A( N( `  q/ P' n! g6 s
[
/ z2 w8 T2 @; R% H' `set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
. s( o1 C9 g3 z6 X2 Tset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
, d% I" M  H3 \, t! ]+ h# I' ~" Aset i (i + 1). B; A8 d7 }  i7 j8 u2 k
]* }5 T2 M# _( L, ^
let k 06 I, k, s4 H: U9 J
let new1 0
/ P% k1 q( H  W3 K- Twhile [k < people]
) d- W1 X2 ?# I$ h: {3 }[
1 s! \% v+ P6 {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)3 `3 _. f  V1 l. P) b* F
set k (k + 1), v/ d* Y. q3 D
]
0 O$ j0 q- t; ^0 Z9 m6 C& S" S* ^* @set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" t6 O, Q% e. ?" S6 zset global-reputation-list (replace-item j global-reputation-list new)
& b7 E7 D3 [$ G" }$ Xset j (j + 1)
" Z0 B5 K/ H8 n; Q. ]' C- h]- z8 o: Y6 f2 _4 n2 F- R1 u
end/ t, [5 }6 t3 ?
  u$ S3 y; A" I8 z* Q: S+ U" n
. R# b! J+ l/ A. I9 W

8 k# [/ g3 h* d: {# A/ Zto get-color
0 [0 b9 R8 x3 j) r! r( s- B2 i' q1 K+ X0 p1 Y. L7 M5 Y8 b
set color blue

* g. f8 e8 d) {8 Lend9 q& b3 H) Z5 I# v/ r+ o& f

+ i* r3 ?) R4 c2 Y% }* Z1 |! yto poll-class
6 [: H* F4 d' X7 i. C4 Y; `end" l- B: Z7 H$ o, |

! a4 \, q' u' m$ j1 }; a# _) Kto setup-plot1
7 M  B' Z" r! A1 A$ u+ D' p7 x% ]/ B! K! F' {) ~# [. M6 }, r
set-current-plot "Trends-of-Local-reputation"

$ i0 P! P7 N5 n- z& T6 J* e1 ?& r3 [
set-plot-x-range 0 xmax

! \5 o5 j9 U; I& X; n1 R% E; m  J' N& q% F$ r6 M) j
set-plot-y-range 0.0 ymax

# H1 p0 D4 i' Cend1 r' d  ^0 B6 ^, A# p

8 Y1 U6 B. E. r+ [0 W3 N$ Z. ato setup-plot29 C8 W% C  e- t( y' J3 c
6 y- E( d, [! @" e, m! k
set-current-plot "Trends-of-global-reputation"

$ x' F* ]$ o/ c; v3 w- e0 S1 w, m, s
set-plot-x-range 0 xmax

  P8 t5 P7 [. K+ S
4 g/ w# r. O# z/ @/ Bset-plot-y-range 0.0 ymax
8 _) L; M8 m7 C9 A  r8 z4 C
end
2 C, Z4 Y9 p! B- Y
9 {- C1 ^# r4 F- d9 j9 Rto setup-plot3
" |" O+ W3 ]6 U* e+ z, P, o$ M$ `, Y  Q* E( N& u' v" B4 A
set-current-plot "Trends-of-credibility"
7 J9 v: r) |* ~, a3 h4 C# I/ O
8 k8 ?% I' @9 |+ u) ~( Y
set-plot-x-range 0 xmax
, e, s! _0 @9 @1 Z- D
& C( k. X9 z' Y0 L' K6 e
set-plot-y-range 0.0 ymax

4 i5 e" K0 K5 E, eend
* [9 m, `: ?8 r: f+ h) u: u5 X6 @. w. x, z% r5 l
to do-plots
! V& \& C( k/ m3 R  L3 z$ jset-current-plot "Trends-of-Local-reputation"
. a' ]% k9 X) a* l) n$ M: Uset-current-plot-pen "Honest service"! k0 |% D6 p6 F
end% P5 f. O: U8 n, e& P

/ E3 W0 G5 G/ h% I0 p3 u; ^; |[ 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.% K3 m) o4 [" S, f4 z
* \& F# U  \" }( m
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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