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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:
! y* R9 s  v% f0 Pto do-business
5 j7 ~8 B* v# i6 a5 K! B; H% c rt random 360
: X% D2 [: w+ C  t3 }2 ^+ Q1 e  n fd 1+ F3 ~. d# B  A* ^. n
ifelse(other turtles-here != nobody)[
% @  ?, l3 v3 R& e+ j, p& 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.& a0 K7 c$ X% `7 m
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
4 \8 U; \% `, c& u   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer7 O0 H( I$ D: b
   set [trade-record-one-len] of self length [trade-record-one] of self
% ^0 u3 w+ o( Z' W. {5 C& X9 S   set trade-record-current( list (timer) (random money-upper-limit))3 T' d) c, B1 A6 r6 \6 O  I' G
3 V8 [3 ?+ L/ Y* M6 t$ d. i. l
问题的提示如下:
$ n9 q8 f+ {9 K/ O9 t1 R, l* r6 n. H/ ~
0 v: @  S' ~% \; q, v* i4 `, K0 }error while turtle 50 running OF in procedure DO-BUSINESS4 a: d0 [! V  V$ e
  called by procedure GO3 P5 I! J( e. ~5 X
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
% s2 ?0 J  h* D$ _  b
(halted running of go)' {2 z& @) P$ d1 B/ |

! b3 N2 d0 X8 N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~~) U/ L( F5 ]. a+ `
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教; x. z5 g5 F/ m+ h$ b+ b* r
globals[
9 M; q! J, e6 |# Oxmax0 |9 {  |9 D6 p8 B2 d& s
ymax
  R# Z/ F" H5 A! s1 t. B8 rglobal-reputation-list
' D% e+ K, M) ]$ `5 J& v# o$ j3 r
5 O( m/ _* q$ ?. D- B+ [. z;;
每一个turtle的全局声誉都存在此LIST* m  Q# {; f  F* @# Q5 X. }' p  Y
credibility-list
3 E5 w& L& @% }3 {;;
每一个turtle的评价可信度
& Q. ^, x. `! }* Jhonest-service
/ c. L- g7 h7 p: h* b0 `+ L& `unhonest-service
# M$ e+ a! \/ foscillation
6 v" _" w/ a$ H4 t8 Hrand-dynamic- a6 M6 I, B8 E8 f' C0 [9 g" Z, j9 B
]
4 E5 ~# L: R+ J* M5 }- Z4 ^
) G9 ?/ b  h) x# V: T+ G* g% aturtles-own[
4 E& c1 a: o& Q, Y3 @7 g( j7 b. z- utrade-record-all2 i  h7 }7 _2 \2 A
;;a list of lists,
trade-record-one组成$ D: p# f) \9 {1 E& ?$ X9 a* @
trade-record-one
( W' U; C2 v# _1 y3 i4 S* E/ [;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录- {* Z; z5 x" g1 e0 @8 ]8 {0 V
/ B( ^1 f. Z1 R' `/ @
;;[
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]]
7 y& t4 _0 ?: K3 d/ U# Z6 Ftrade-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 ]% n9 H  F+ m* S) A
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
5 a# [: T  q+ N. L7 K, H, ^% Zneighbor-total
" s0 P5 k/ K) y' O7 j' n;;
记录该turtle的邻居节点的数目
5 @& J  Z' {7 J( qtrade-time+ O1 t! Q! \, Q4 i
;;
当前发生交易的turtle的交易时间
$ a! B9 C  C2 a3 E+ Q1 r% q6 C$ _appraise-give( B- u4 i5 d: r, u1 \/ ^& X
;;
当前发生交易时给出的评价
9 _( O' A# t7 t% ~6 H) Zappraise-receive# B) i1 l9 ~3 Z. O
;;
当前发生交易时收到的评价5 e: n' n, K' h- x
appraise-time
2 k, x1 ^; B/ |;;
当前发生交易时的评价时间8 u. `/ E' x3 S% G& B7 [; m
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
. E" h9 t9 M& O" Rtrade-times-total9 j8 l. }( `+ M3 d. _' S" @
;;
与当前turtle的交易总次数
8 p3 X% ~; z* |3 o0 ~trade-money-total7 ]8 J+ T7 ]0 q  j
;;
与当前turtle的交易总金额2 J$ U) N" Z0 m6 Q; b
local-reputation+ B- F4 ~0 x8 W- @. o. U3 K
global-reputation
5 p, L5 c% `7 G/ ^credibility
# D- C$ a8 v5 `; l5 C, l4 K;;
评价可信度,每次交易后都需要更新
* A0 Z+ S% A1 r1 m% W" j" Gcredibility-all
5 e* r7 E) q& s( F) B6 \' J# 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
7 h1 c7 ]6 L4 g( |- v* {& W% G. q% @" S0 S8 k. l/ W5 V! {, U/ ?
;;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0.52 Q6 k& n* p' {8 B# j+ _
credibility-one' S/ A$ j7 j- e/ ~" @
;;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
1 I9 M- J" U7 ^" h7 [1 T# qglobal-proportion
0 l  Z0 E* m& b3 ?customer
) [3 V: P1 C' [* {& s5 T$ d5 p( ~5 ^; }customer-no3 z6 D- w3 l! N. F' Z
trust-ok! @1 h* M. q! A
trade-record-one-len;;trade-record-one的长度
) @, o1 ?9 ~" c/ x]8 w  O* F0 S8 f5 j2 ~: O

# l0 j4 J7 ^# b% E;;setup procedure  l  \2 X/ [' m9 W

& T+ ~" E  `/ |! H7 m  j4 m4 W6 J& {to setup
$ [0 i; Z, Y: {1 P, o' K/ }: Y1 P9 v$ l
ca
5 o0 E. e: L3 E& U5 e, _

; c- m8 M; L# D; ^8 S: g9 s, ?initialize-settings
* b) v8 M" a. t+ E; B5 s- f) a; T5 D
: f& M+ @* m- h( G3 t, v: i) {
crt people [setup-turtles]

  R* `! k* I! p% z, Z2 m( x
: j' p, q+ p6 ]/ o2 U, M5 rreset-timer
0 T8 B- j: @- y# c, \

: M9 w5 |- o- X$ a+ D# ]4 opoll-class

  d. k# |& t/ |+ l2 J+ P
9 U6 N; `* R9 z" ]' m$ S; Ksetup-plots
) ~4 k- x* {5 E8 _8 Q! p5 p
) U8 I5 |' |  C7 P
do-plots

( ~+ `! a; L# H- O$ nend
) S6 {1 Q& }2 \& t* L9 n1 J4 I$ A8 [; N
to initialize-settings
2 k8 _' R' h- ?' n8 Z6 T  V$ c) Z6 j, C* w( `
set global-reputation-list []

3 H3 |$ X0 k5 x  P$ b3 E; K' _$ v3 Z+ N
set credibility-list n-values people [0.5]
) Q: N. j' ]+ r( H- P

4 [4 i8 S- F  W9 Pset honest-service 0
. V+ v% }1 Z/ f# F

% A7 u7 w3 D4 Y2 M5 z) B7 N# _set unhonest-service 0

0 j% K% ]) w4 A. N$ I% B6 ~$ F* B% H/ H- F1 p+ v% e1 l) b
set oscillation 0

* j! i0 Q: u& g8 X; n  u0 u
' z1 c7 a1 w* Y% Jset rand-dynamic 0

# Q! M- ]- x# p& a8 Nend
. h. U9 o6 v* i3 c8 f- T. K: B% k2 C5 M4 U
to setup-turtles 5 t$ u, C- k. Z, a; h
set shape "person"# x# ?' E( \2 x4 V# ^% \( ~
setxy random-xcor random-ycor
# g5 X: S% U" I; M* g. hset trade-record-one []
  s$ y4 {1 f/ `- ~$ g. E

# s2 k% x9 j! m& s9 w6 _- S" [5 A) Eset trade-record-all n-values people [(list (? + 1) 0 0)] 9 T* E) ^' A5 l, r

& j; W2 K' I7 C6 N: ~0 Vset trade-record-current []/ w( b; Y: g* h/ ^! `' K! Q2 l
set credibility-receive []
8 ^7 s7 S+ A9 j: |! N% g9 e  ]6 Mset local-reputation 0.5) Z$ l" c! y5 h3 ~" r
set neighbor-total 08 _. Q4 k. ~( [$ p
set trade-times-total 0
' U) X! a# ?" [8 p# f9 Hset trade-money-total 0
& G. a. B( @5 F. t4 g0 |3 m5 vset customer nobody/ E% z  H8 y' |' \) z' O- M
set credibility-all n-values people [creat-credibility]2 }& D0 V1 b8 `" T+ v( M
set credibility n-values people [-1]
1 _; E, f& ~; C) u" _% O; H" ^) Hget-color
# P) k9 Y7 y6 f$ _4 _

8 z7 Q0 a" o$ b/ W& \end3 F, \+ m# D2 h# ~, Z

) T3 _/ }. c- g. u+ V% |to-report creat-credibility
5 K  G1 {3 U7 l8 T) Wreport n-values people [0.5]
& y  N& k5 V1 w/ B9 }- c: ?/ l8 Wend7 r/ A  ~: ?( K; ?+ y, R5 V

9 m$ l0 }* `5 K( |+ Z- Zto setup-plots
, C1 {& N# F7 p" `& U$ \2 B  i* s* t4 {2 |- @
set xmax 30

# h7 q: V6 V1 `' w, h
1 d4 i% b7 }7 P* y' G5 pset ymax 1.0

3 k% w8 Z+ \* @9 u+ p) f  A
& D. q7 I" x, Y# mclear-all-plots

( o& d4 A2 X* h3 |- G' O1 ?
. s. l9 {, N/ |$ N) ?setup-plot1
; F4 L& O$ R. q; u+ V4 [% N
/ t: O& ?1 l! P
setup-plot2
9 R; ~+ K1 }4 V% d9 C" m0 f
) x; I4 S7 j# {5 E3 ~" J  g
setup-plot3

2 d. J  S8 R9 s; {: h% hend+ `" T0 ?+ X7 H+ e

1 o: J7 v8 |1 T5 x/ J; u;;run time procedures7 H8 R( L; [) Q! n3 o& Y9 |
  c( j7 }. j+ B4 N
to go4 o. |  Y3 r, Q% B% X% [; C  `/ e
  H2 P/ s( v7 Q: {1 l# B$ C, J
ask turtles [do-business]

- G6 k  O! ^* a8 z5 f1 mend
3 L! j/ `" _$ P; G7 |( [+ I1 a& {8 `
to do-business
9 b0 b# d4 r5 j5 i* ~4 E0 g

9 p: N$ h$ {" F* k, V0 B
/ W  F& b) r8 D& W8 N" F6 u6 Brt random 360

0 u; C$ Z0 Z& ~$ r7 S: v. v
" Z" z, f+ K7 i" \fd 1
1 x8 ^0 {5 t* ]' @; @) L

7 y8 w4 E, }. S- yifelse(other turtles-here != nobody)[

- ]# r- C# {; x7 D% J8 q8 z% j0 G: R7 M1 D+ @: |! F" P
set customer one-of other turtles-here
3 @/ b: e4 r# P: y8 x, g# S" _
+ ]% [' B. t( p+ J. I
;; set [customer] of customer myself
8 Q5 T4 B( t4 @/ X# l+ o

( g+ o6 Z8 }( K* V8 G5 xset [trade-record-one] of self item (([who] of customer) - 1)! `# L+ p# n/ a! m1 g2 c7 ^" t
[trade-record-all]of self2 g; o, ], ]' D8 D. {
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

; m3 f* x3 a. q# [$ d1 j. E7 x+ r, t; v- A4 ~1 T
set [trade-record-one] of customer item (([who] of self) - 1)5 C) W  b# D# K5 ^" R0 O
[trade-record-all]of customer
8 r) o0 O$ _1 i/ O4 D

/ u/ ^, w4 k& Y& e' i  O  g) D8 P; Aset [trade-record-one-len] of self length [trade-record-one] of self
/ e6 N" h) d: q: v: L8 q9 \

5 P* H8 c3 ^! @" jset trade-record-current( list (timer) (random money-upper-limit))
5 q% K1 u6 t9 x  y
9 a! v) y% S, F- q7 p; G+ U. D, @# @
ask self [do-trust]
  P- x- N2 f+ L# o;;
先求ij的信任度
8 Z9 D0 |' V5 f- j+ H. ~% U) j+ O3 _
if ([trust-ok] of self)% {% ]5 b7 ]- _* k; D4 I+ ^( N
;;
根据ij的信任度来决定是否与j进行交易[- W! K7 X7 c0 P4 B
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
9 J$ G1 A9 t& G$ ?+ }7 }, [" ^7 a. \- v6 m( E7 @" x
[

1 c# f* \% a! t; g" Q" x& q
5 U; l8 Q4 M$ L; ^1 n  b# g* R- Qdo-trade

! c. T8 U0 N- r  U2 A; T" _0 k- u
: S( Q9 \9 j) e' _, w9 Jupdate-credibility-ijl
+ l/ z- p( B4 u, w+ M
6 F1 v4 S1 ?+ M
update-credibility-list3 `9 o# K+ |% X/ t) m5 S% `" z

3 S; E6 }; _) L  i9 e; c! y1 F. F8 I* [3 P2 R2 E
update-global-reputation-list

0 {/ [* _" t% E2 [) f( m  ]+ p1 e- _3 U5 v$ j
poll-class

, B" x6 Q& C: _! ]7 h' j- [
9 T7 ~8 S3 x+ Z& i$ bget-color

6 m, U, |+ G8 u; A0 d2 j+ [; z7 ]8 S1 B+ l" l' E) v( n
]]
% R  J9 ]+ v9 x- w9 j, K8 z4 q  V5 w0 T$ n
;;
如果所得的信任度满足条件,则进行交易: a8 e( [& p- @  t  r+ x1 d' P
- I  o' Q) u" J1 g% y
[

; J* q4 d  t8 g  J
6 _# o: r6 l( R' ]( v9 P. hrt random 360
4 |  O$ o4 Y* n# [- v, r2 ~

* ^; E3 }& r) N3 afd 1

7 d& B6 F1 S4 x% d0 K* T0 {6 v, B# b8 s- z" W
]

7 f! I' c2 @4 w9 Y& A- N' h! f' y, E/ C/ u, ]. c" F& K% L+ M
end
1 ~. z% `! x! M3 [0 @' }4 s1 e; K( `

9 {# U( c1 }# J! T" Pto do-trust 8 ^0 G, o! K. z  {# y- _
set trust-ok False
9 i# p1 e& {, K8 B9 P  S8 G
* N$ {+ E% W( \1 Z3 U5 t: j# Z* n
% T, \4 W9 o; v' J2 d  k
let max-trade-times 0
) @8 Y; [" {+ V+ e) d- g8 ]foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]1 w7 c  Z* a% j8 S* H: R* n
let max-trade-money 0
- t$ A( Q! o& y( P7 }( ^foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
( u, ^* T  e" _( Dlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
3 z6 c, I3 p/ y" K, ~
/ W! r' m4 a) B8 r4 L
: E2 b( u( A$ ?8 t4 U
get-global-proportion
/ m5 q, t- U: H+ W6 P- n& q0 Q1 N" g$ r0 olet trust-value
: C* ^& F2 u+ A% Slocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

: ~+ h, c- `0 t$ @6 tif(trust-value > trade-trust-value)4 W& ]+ t- T8 T/ ?
[set trust-ok true]
  a8 l% z9 ~8 v# X3 Rend
, C3 g9 i# x2 c% i9 [2 r% I; |1 P
: o, z' g9 c( {' a0 y; ^to get-global-proportion
5 o2 ]1 @( D1 X3 M, |+ q( E! q1 P! ~ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)& g6 l8 \$ i% m5 o4 g
[set global-proportion 0]
& w" Q5 V' P& j3 {  }8 Z[let i 0; N' F, k' Q! O0 @/ |, Y* e) E3 `
let sum-money 0, x3 U. r8 i) q' W! E
while[ i < people]
/ ?2 s. W, X/ Z, U3 i[
% h9 j! F5 C- K' z4 Xif( length (item i
: G! x" Q9 c+ \! z6 k, U[trade-record-all] of customer) > 3 )

2 C7 q, W9 d7 f9 ]! G7 t[/ l! X& c2 c1 e2 M9 k
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))# U  ?( c1 X1 W; b
]
; L0 V* L6 l. p+ B" [. b]0 R+ d% Q# h# w6 @
let j 0+ Y& ?) q! j' k: Y4 [8 D3 x
let note 0! c  a, Z* j$ L$ i6 @. _* {
while[ j < people]
9 [% w; c/ f9 V7 f$ _[
" g1 i& F0 h( D' b7 r/ T% ~) i+ h0 Xif( length (item i
0 Z$ F" w; I6 ~$ n4 B[trade-record-all] of customer) > 3 )

& N: t- x/ T/ S4 x7 t# u[/ Y! N1 C, w# t& a. o
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
9 J9 j4 f9 [; T  Y" M[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
/ t+ [. u, V. D7 H9 ?0 |[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]% x. \) ~4 @- u+ k3 ^
]
4 B9 M9 o) h! o& h( b]
0 o( g3 t# y7 ^* E9 o# o0 cset global-proportion note% L) z7 V9 f$ r4 X
]
- C: q5 m4 Q9 W, mend7 Z, J  @3 @9 H8 m* Z6 T' f

7 N" n9 n  u) O& |, V* hto do-trade
1 y7 E: i: E$ R, ]. x4 t2 q. X4 f1 V;;
这个过程实际上是给双方作出评价的过程$ x, Q  h& E, U: K1 @
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价- A9 ?! b) C( g) A
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价4 U: n. `0 K0 h7 d7 \7 }! H
set trade-record-current lput(timer) trade-record-current
, T! G( ]" e" Z- T;;
评价时间
1 Q( D: K1 w# V: L8 ?, Bask myself [
- s0 `7 A( |) H8 P' [9 m! aupdate-local-reputation: R5 i! x. G1 R( P6 d
set trade-record-current lput([local-reputation] of myself) trade-record-current
  H8 _+ i' ?  `( Y$ Q6 e* H]
3 O7 I! ?+ z6 X; }/ I5 `2 ^; Vset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 r4 Z) G' l* P1 ?
;;
将此次交易的记录加入到trade-record-one4 n! b; b0 O5 |' W
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
! H! g8 e. f# i" p$ a  I8 R4 W$ G: g9 hlet note (item 2 trade-record-current )/ y6 i  C- ^% E3 m9 t
set trade-record-current3 d: h, H: P: e/ P& g( T& S0 B
(replace-item 2 trade-record-current (item 3 trade-record-current))

2 G. m& t. d7 I( ~' @set trade-record-current2 q& Y! a; G8 R0 n
(replace-item 3 trade-record-current note)
. v  {9 {- q- ^- o* R- n# E' p7 ~7 c5 l! ~" V' l- {' _
% W: C/ V9 V/ _) B9 l
ask customer [
5 t7 u( y- H# l6 w8 x6 c# J/ _, {update-local-reputation
1 n# r# X4 \& T) uset trade-record-current
( l, N- p8 y% @0 ?(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
( N: k) c9 V2 T; ?3 B
]; f# w5 M3 I/ d

- [. T/ u7 Q  N, D/ k9 G- `# t
# D1 U7 N# r7 O7 |9 |
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- D4 f0 C8 R, m; A' {) i  F
& e+ P' h7 p2 {; _
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))8 H% b: f* R3 r! `
;;
将此次交易的记录加入到customertrade-record-all0 j& N! Q5 H* `2 P, D2 r
end7 P8 z, p2 h$ }" b

6 o7 H% b2 x0 Z  z' F+ G! wto update-local-reputation6 F9 L, V: I- z7 I# [5 S
set [trade-record-one-len] of myself length [trade-record-one] of myself: ]* Q$ N4 y# u: ~4 o
; t  j, t, e' `2 r" A& L
1 a' `  ]% U/ w$ @# w
;;if [trade-record-one-len] of myself > 3
- ~1 P5 R3 U5 F8 s
update-neighbor-total
9 m6 B+ ?; y! V9 C5 }& N;;
更新邻居节点的数目,在此进行
6 U2 Y/ Y5 a! f: }$ \$ t* y; {let i 3
! m) N" U" E5 j* Y/ F, _let sum-time 0- Q' g# R/ Q0 ]; T. d9 N
while[i < [trade-record-one-len] of myself]+ I/ G1 U, {# p' p
[
' f4 V% l3 S( N- o7 r$ E6 c( [' T! Zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 S$ K3 y$ b. hset i
( P+ t, Z  a7 S. f5 j8 U( i + 1)
9 s: e. y* J7 s% d
]: q) K: ^2 Z, Q* L. O( J- W7 u
let j 3$ R- ]) U* E) K4 C
let sum-money 06 t) w& H. f# r0 N+ m5 t# M$ N/ ^4 A
while[j < [trade-record-one-len] of myself]
8 C+ V: H; R; i4 A" Y+ r" {[" S0 `' n7 d3 @! A
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)8 E  w5 m8 `% J# B9 g
set j" f$ m3 w$ c2 k# j4 z' x
( j + 1)

# v4 S' U% e) o0 t; o# d5 j]1 w0 I6 C" Z' |4 @
let k 3) n" @: A5 F  a( x
let power 0
' ~4 `! f3 Z4 C+ a8 z5 l+ [let local 0
; V. x: L* ^0 d7 fwhile [k <[trade-record-one-len] of myself]
% D6 _; v" a) `# r" e9 e" l[) _  H5 e  Q3 N/ c
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) 7 a3 B- |2 b  N* B( p
set k (k + 1)# _- ]4 O7 n: _8 I7 s) u
]
* q3 Q8 ]/ D& b9 ]/ k3 s' n" nset [local-reputation] of myself (local)
5 J8 X$ f8 ^/ A! h$ a: R7 a6 ~9 Aend
9 c% E# e( I9 J" S7 X# O* B- m
! E" Q/ u. `# C) m# }to update-neighbor-total
1 D; A5 v# p$ J3 \$ _$ v1 ~
1 t: u# I+ \! \, f1 N* Zif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
: t/ g/ o/ u3 S- a( u3 ~9 V6 q# a3 T& b& `

1 m' C. Y0 I  y1 @end
9 \' G8 z7 S( I" e& l# \" c# I9 |/ B2 f
/ X; @  g' N- Zto update-credibility-ijl
2 }+ g$ h7 D" e$ H) T2 @3 @! m0 l4 U7 m+ y8 Q8 g
;;
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。; M% I$ M% w' E+ s
let l 07 C4 B) l8 D) z& M! d3 F/ y
while[ l < people ]
/ y. E. w; k- s2 {  Q;;
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 q2 f7 X  y9 v, r# |$ T[
4 D+ I  E/ n; Elet trade-record-one-j-l-len length item l ([trade-record-all] of customer)! y& m! i) m9 j8 |. [% \
if (trade-record-one-j-l-len > 3)$ w+ h; y! _1 V* }2 c& T( ~5 n
[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
( p2 ]. M3 E/ P5 q5 @3 ]1 Tlet i 3. g* V7 s& ?9 h* T& w9 C2 }6 z
let sum-time 0# k- o9 A' [; H5 G
while[i < trade-record-one-len]
: y0 H8 [3 ^- W[
# a) t) b7 b1 ?9 Q7 Dset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
+ {; w, e- ~9 B6 |set i  P5 r( S1 T0 R: R& Y
( i + 1)
$ X; A. S# f) \: q
]9 [% p! }4 V+ x  p( E
let credibility-i-j-l 0
) o& l. V# T  _;;i
评价(jjl的评价)" n# T. P* o# Q
let j 3( U5 {4 ?2 L. N
let k 41 ^" K( V7 z' c; B. F3 ?  v
while[j < trade-record-one-len]
( a5 C7 s! K7 I[
5 z( v: i  ], d! D: f7 n3 K4 @1 T# awhile [((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/ F6 ~4 }4 B8 i- A: t* t
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)( s& P+ K! E# f7 X8 l( ]4 }# e9 v
set j
7 F+ y( u! o7 t( j + 1)

2 @0 Z; E' {  r8 k; O, k2 I]1 }5 \+ z# X( ^' ^& 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 ))
" f; Y! H6 d  J6 b
8 {0 ^- V" j! W; T6 a" T

7 K4 [& I% F& X3 [let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
  O+ k; c9 Q7 f9 b;;
及时更新il的评价质量的评价
4 ^" @* H/ b4 V" h% Z/ `' Rset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" x' ]! u8 ?5 Oset l (l + 1)  I8 ^9 `% b6 x6 F' S* W4 O
]
/ I, Q1 A: Z" }. x* M' `# H6 Kend$ ~% D; m: \# ]2 u, ]

, Q$ B" o5 N# @+ R6 c4 `6 Dto update-credibility-list& r' v. \/ \6 ?
let i 0" \) e4 K( w+ y$ [# |
while[i < people]
# k: u7 x) b6 k; v1 e3 g' s[
: E' Z& F0 E8 l* h6 \; y# wlet j 09 [9 e# ~6 z2 {0 v
let note 0
8 O, P# Q( K  N2 z/ \' D$ Olet k 07 i1 @- ?" ?7 m, F& q1 i+ O/ R
;;
计作出过评价的邻居节点的数目& Q' E; L3 I% c7 U2 e4 O5 Q
while[j < people]7 W1 P* s3 Q" v' p" Y* s! d
[
4 }7 A' P) _. w4 yif (item j( [credibility] of turtle (i + 1)) != -1)' V) E* g* f7 s0 x4 c$ O
;;
判断是否给本turtle的评价质量做出过评价的节点# a# ^- h$ t$ N( F
[set note (note + item j ([credibility]of turtle (i + 1)))" f! {0 L+ @! W  I7 I$ I7 D0 E6 _# I
;;*(exp (-(people - 2)))/(people - 2))]
2 L9 ~! ~8 j5 d$ C. N
set k (k + 1)& y" U' ?5 Y/ E
]
6 K5 a3 V( r4 R- N* I' v5 s- Z' Hset j (j + 1)
! g) c9 V" o) h" a* u( J3 L]5 y  C% c" Q- i( B- g2 I9 X
set note (note *(exp (- (1 / k)))/ k)
# ]$ O) a0 a4 f1 A; T" e# g4 Vset credibility-list (replace-item i credibility-list note)! H' x' j, ?3 D+ ?: E' k! L5 _
set i (i + 1)
- X" v5 v  B; V]1 y) w: n( }; {% R& u7 v
end
  g( r+ N) T/ C6 H& S6 o
4 G7 I8 B7 h9 V# R$ o( Cto update-global-reputation-list4 ?, e$ X" c. p/ Z& U
let j 01 E  f7 U/ C$ T
while[j < people]
* M; F; ^& @$ x9 d+ i! ~[8 V, o4 @% y; t( `
let new 0: g2 V2 m2 ~% \8 w7 |" G( `
;;
暂存新的一个全局声誉
) k8 v+ w5 I  n( U4 Z: Z9 A7 x; u6 Nlet i 04 [0 w+ K4 A! J$ R6 A2 Y0 J% A
let sum-money 0& r4 U6 |, A" v* x
let credibility-money 0
( U* z# k$ x: t# y7 cwhile [i < people]* @$ ]' M$ v: h1 O. t# v6 N
[
5 g6 k, m# H0 M; w+ v# ?set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
3 r5 u$ P5 ~1 u3 J$ J; S$ Q3 Aset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
1 D1 Y- o1 @9 u' G  \set i (i + 1)' |4 m2 W$ V: ]. A# t0 {1 Q
]
( ?8 p( f1 R4 M: |; m/ glet k 0( D3 ~: e5 a4 V$ I) k2 p
let new1 0/ y. j2 t* ?) E' [) L: {
while [k < people]/ ^+ c0 X# i, h" w* Y
[
. q, L9 J5 j: Sset 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)4 z/ Q$ b+ t) K3 P$ d
set k (k + 1)
4 d9 v: I/ L; v/ C]
! P. B* N! \; c# W( p$ d1 F- iset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
' U- G- h, c2 `4 e; c2 r7 ]set global-reputation-list (replace-item j global-reputation-list new)5 Q9 y0 ~! `, t3 y! u% h
set j (j + 1)
6 F' h  C" @" ?% m" i+ W" O' L/ z]
- C9 i( D, s5 {0 t' aend! T2 h3 v2 R, W5 r& x! x6 t! X

, C& O: p( O9 }
: t& T) a7 O$ w. ?# {$ E4 X- k. `* B
to get-color
7 y. |. I" a( i  Y$ x3 K7 s  B! b- [
set color blue
- J1 V( W0 x2 V" z& ?
end
9 S) {0 N/ M5 \: F9 A! ?- g! ~; a8 z/ |  R+ c; G' g
to poll-class
' z" v6 b! h; y( m2 g6 u0 ?, Hend4 U9 E% q& }$ a0 z, I, i7 G
! D# O& U  @5 |" u: f9 v, Q( F, ?
to setup-plot1
7 Y+ b$ j( V* V$ s
+ W+ }5 Y5 Q: p6 Q  oset-current-plot "Trends-of-Local-reputation"

0 g; F! I6 h8 L0 s( Z5 R8 s; v0 P# a
set-plot-x-range 0 xmax

! y8 y1 C/ _( n! x
9 a+ }7 _/ n3 w* K; Wset-plot-y-range 0.0 ymax
$ K( S- ^  k: i/ c) f* s! A0 s
end+ ~8 ?  H3 M- z/ q3 r

6 b# Y! W. @) b" c1 @% V+ Fto setup-plot2
1 @& d; W: F9 @3 n* q: J. G5 }3 t
0 T3 x" P4 D" O2 C$ ^set-current-plot "Trends-of-global-reputation"

. V/ S' O! O( F  t: v" y+ U& x4 T' z6 {% I/ c3 L, I
set-plot-x-range 0 xmax
7 S* G4 Z: ?4 ^1 o! a* z+ U

4 E7 w' U, T3 ~# n+ @0 c  Mset-plot-y-range 0.0 ymax

3 i( ~' o: }% {8 T, ]; fend3 \# E5 p+ |5 t. F: c2 f

5 J* M. J# y( C* E7 h9 {! v0 Bto setup-plot3
9 {" R3 B; \% Y0 V1 g+ G8 {& y% R) ~% x* O
set-current-plot "Trends-of-credibility"
9 X6 t8 M& U- t. M

* B# a2 x% \, H" n0 c" Vset-plot-x-range 0 xmax

& Y' A7 R; s  j+ [8 ?) G  s9 [/ p% T
7 r+ g, a2 d5 d: fset-plot-y-range 0.0 ymax
9 S. q" v6 }3 y4 q
end
1 p, g. l8 o4 ~( v4 Z( m$ D4 J( L& v3 q& q
to do-plots' w+ [; g2 {% U8 f
set-current-plot "Trends-of-Local-reputation"
9 W2 `/ V! T# wset-current-plot-pen "Honest service"/ d/ G+ `- ]7 L( k4 n7 H6 [1 b
end8 f5 W/ {* X6 z& P' J: ?

$ G- F, P3 k7 ?) w: h2 A* B1 d[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
9 @3 t. |, v5 f' U! F) d9 U1 E
/ t6 H% X2 W! o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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