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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:6 j8 e; ^  Q- U! A8 w3 n7 V
to do-business 3 |  @$ j5 }# J/ D+ T
rt random 3608 Q0 b0 c) }6 |+ Q
fd 1+ @5 ]* P" e- {' g# d2 Y* l
ifelse(other turtles-here != nobody)[
* F2 @+ A& ?$ D   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.$ \9 y6 {: ^. |* f7 Q
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    $ t4 c' T8 H! x4 F
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
4 z! ?8 i, l( p0 d& [+ T; [   set [trade-record-one-len] of self length [trade-record-one] of self* Z- m5 c, ~6 T: X
   set trade-record-current( list (timer) (random money-upper-limit)); p& k- W  u+ Z) V5 O9 t

- y5 A, r  f3 z% s9 P3 q问题的提示如下:
4 {+ @" G; w% i& c& d- b
- H' C5 B8 E. |* B# U( \error while turtle 50 running OF in procedure DO-BUSINESS
" L9 {8 Q3 R; P5 s  called by procedure GO
& z, h8 \( v& q7 e7 E% N; {OF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 N( n7 W; i, Z
(halted running of go)* o: e) m! ?6 U4 _3 G0 }5 p; k
! x6 J: i) z( q1 o+ v- q  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~~
5 S" V2 k" ?4 B) x. m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- P  L( V4 h; l1 j1 P+ f
globals[
. N0 y& Q& |; a0 @0 vxmax: w) r1 @% G# w' h. ?# k
ymax
1 F% A5 E; E' G( g- R1 X: U0 uglobal-reputation-list
; j# p' F4 d: A
. O- M( O: F8 C7 M+ n;;
每一个turtle的全局声誉都存在此LIST. X8 w" m/ H2 m" j$ I$ o. m2 u
credibility-list, }) R5 [7 F7 [; s- T' S! B$ r
;;
每一个turtle的评价可信度/ e* T3 C' ]5 C0 V
honest-service
: B- Q7 x( N$ A: Wunhonest-service8 i1 `; u! o3 Y% j( V
oscillation5 F" ^3 d2 y3 N
rand-dynamic* L& U' S' r8 I" K( |& G
]
$ k2 n; ?/ Y- k2 e( D3 R0 ]& J# H
; E1 @$ H% h+ ], [) H' u8 Dturtles-own[# T$ m9 y+ O6 D  o
trade-record-all1 T1 h9 C  A# c* P* O  P9 i! U8 O
;;a list of lists,
trade-record-one组成
9 m! s, y9 r; j( }& \trade-record-one
7 G1 f+ G( v- e5 p! D4 |;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录- A1 q- I# z+ C! s7 ~4 D, x
# ~* ^4 C8 F3 D# y' G9 |
;;[
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]]+ W) v% N/ H8 K
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]! O! Z& Y4 [% A# E: P9 `8 H
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
8 n& D7 Z) y- t# P0 P% S: @6 l2 Jneighbor-total3 \, |6 Q8 Q( z7 m1 h
;;
记录该turtle的邻居节点的数目' `) E& i; l9 n' b$ X
trade-time: v) q, R& u( b
;;
当前发生交易的turtle的交易时间
9 Z/ t* X$ w, `appraise-give
$ ?  _* n. z- B0 B' i" m;;
当前发生交易时给出的评价; ?  t! `) }' c( P+ ]. {( j
appraise-receive
1 W. J% x( V4 g  Z# |7 O1 W;;
当前发生交易时收到的评价6 c) |0 l, s. q6 {+ B' p" w
appraise-time
* }9 w9 H5 g; H; E6 [9 S;;
当前发生交易时的评价时间' M4 W" p+ w: w0 K
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
& q3 i6 H( k% dtrade-times-total% n, P4 \" Y/ E8 e) k2 u& w! y9 s
;;
与当前turtle的交易总次数
. k% e& B( I+ n$ |trade-money-total' N' I! S+ W  q, F" v# Z
;;
与当前turtle的交易总金额6 }) U* f: c4 Q+ w' M
local-reputation9 J5 S0 T# X; Y9 P- I
global-reputation
# J, q( M6 a7 A. i' Ycredibility- R6 f1 x# k0 h. e, o8 J/ f7 M
;;
评价可信度,每次交易后都需要更新
% f1 i% A5 M) k& Z5 |credibility-all7 Y7 {) w: y& v  s: H" B0 w( s0 m
;;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8 c8 i! g' q* u( b
0 I; B) o" t0 J6 T4 u7 h5 w3 W
;;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
, ~* j4 O2 b; M' ycredibility-one
/ k$ C( a# _, c' N1 P  J;;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
, B8 Y+ O2 e( D. `global-proportion& q* X- w+ F7 ~  A9 H
customer
4 ]" V# k5 T  \* U/ c/ J6 y; [1 vcustomer-no3 A3 h% d' z' M; n+ V
trust-ok
, w$ t, N: r% n4 A5 y8 t6 G3 Ftrade-record-one-len;;trade-record-one的长度( |2 [' V% l; b6 P0 l
]
8 v8 M& v$ b* D9 H6 z4 Z' P
2 k4 ~# e4 Q7 v;;setup procedure
0 @9 G# ]! b4 [  w
  |3 U$ `- Y5 B1 t( uto setup
, w& b6 v$ J, L1 j: D  e4 M. C8 K7 _! h, ?7 E* @
ca

* y) q# }4 L: c* O5 V: M! E/ \. O0 e/ C, j3 ^% |# K5 _
initialize-settings

7 L; b% ]0 U* l, z0 _  G8 q6 I# ]2 E" q- Q
crt people [setup-turtles]
/ f3 O- `0 h. m
/ s( X/ u* a: O/ ~; }7 V
reset-timer

# c4 l+ {, }. {& y7 _$ C% a1 {' [1 [- z$ W4 E" j% _" |5 X& f
poll-class
+ ~4 l7 S& g! p# l0 z* J7 I
7 a3 r, d) h& h' V) _
setup-plots

5 j% [  X  A: @" Z- |
& o) w8 ?4 X" k/ o. \  Wdo-plots

$ K2 r7 c+ E* R6 wend9 A$ f8 N6 \0 a- J, M" w

# f8 G2 x9 C# f. D& wto initialize-settings2 V5 e- p9 J9 }3 X0 U# T

! l* Q, ^, S' s/ |set global-reputation-list []

/ r; y, [8 a+ N6 b
/ `3 x, p6 {, B( k& m# B- Gset credibility-list n-values people [0.5]
4 v' C: p# E2 p% Z7 _

( D" ~% @" \) g5 f. L- Nset honest-service 0
! O$ L& S7 b; f! p9 B0 u# |! i
$ r/ u" Q+ ?! d* M3 @0 w
set unhonest-service 0
% @% k' L+ ?5 j; v! Q
/ j4 d7 R. o( `+ ?# }
set oscillation 0
. T6 F6 p) D* ^& q  P. z9 E

9 `7 l" m( V' M. Y0 hset rand-dynamic 0
3 {! |- @% y7 F! d7 F- v# L" c
end  x2 z9 h! n: F! @! @0 D

: q& `& t. A: ~4 gto setup-turtles . ^) n5 r+ g- P# k' e( x" |' M
set shape "person"
/ X: J: d( @+ a: O2 F7 _$ Osetxy random-xcor random-ycor
! i$ Z' q( m+ t  G& K" X$ d: T. lset trade-record-one []
/ l1 v4 }; _  @( u. j7 F3 k1 D
9 I" H; s; p3 d6 H
set trade-record-all n-values people [(list (? + 1) 0 0)] " F* `4 f& d5 m6 i. h

3 a  }+ L# ]1 Lset trade-record-current []
1 u. H( f* g( |1 H* F2 Lset credibility-receive []: s1 G9 q, ]& S+ g* x6 q( I) N
set local-reputation 0.5
+ u/ q! r% P: J. V; I' sset neighbor-total 0
: b" C; }2 B. n! y4 o4 pset trade-times-total 07 u3 j% Z* e! ~8 z1 D& U: A4 L
set trade-money-total 0
6 f  D% p0 F2 U; N- Gset customer nobody
& y# ?4 Z& Z. E6 Y0 o5 v! R& U; Hset credibility-all n-values people [creat-credibility]
! y. B9 ?) c# {, K: G7 T" s/ ]set credibility n-values people [-1]
0 T5 T& F* t, xget-color5 F- l: i7 ?) X% R% p  i! F0 D
+ l: }0 U$ Q( |% @9 f
end* m" Y  y. l* o
  T" X1 T+ p4 o0 y; |! }$ Y# l. r5 A
to-report creat-credibility5 N, V7 i( N: ?* a$ D8 D
report n-values people [0.5]/ F' I% T/ u# m$ B
end8 n4 s- `$ c$ h3 r# q
% g! W$ f: ^1 \! R5 C; a0 [1 @' Z) p  N
to setup-plots2 b! ^1 u; e0 r$ d' X

/ [; ^) O' o1 I3 d) P, |1 w: |set xmax 30

) B$ G/ s, t. k# V8 J) @2 u- a& x/ {+ C' G4 ]* l7 Y2 `/ D/ b' \- |3 X
set ymax 1.0
: W9 D6 T% l; J0 ~' f( }

5 ~! B. `( q/ uclear-all-plots
1 P5 T0 R" p. j6 T: [5 s

; S" w' g1 ~$ u; Csetup-plot1

/ S0 z0 ~' d" S
# n5 r. u+ Y2 c6 P: P% Ysetup-plot2

+ m3 U  l8 Z8 L  O% @" z' G! S. M; j. V( _+ B' f) d% E
setup-plot3
& K. p7 B8 N3 y8 G# t6 F6 O9 R2 F8 [9 D
end
" D0 c. W6 d+ }7 b7 v6 k) Y" V2 Y* Q) X
;;run time procedures  M% m# K7 B: v& x! |4 v

  K* G) j% J8 }( P; J  j' e$ v, @5 ~to go' `  h4 [* M& O/ R

$ m- E* v  P: L! U9 ?' ^1 w( qask turtles [do-business]

6 W0 v) e* \/ @end
! B; b; p9 @0 s
' |0 B1 M$ d; a5 q6 z! T' Gto do-business   Q. p5 l% E# ]+ {5 Y! a
, Z: H+ Z# y$ H. g  ], ~
7 H0 @' \# e7 |: y
rt random 360
2 g- K! ~" A# Q
6 Y% K! w9 _7 D/ B# m# v
fd 1

8 K. ?* B& _8 s- _& r( S
+ V: g  r! `' z7 u' B+ ^9 fifelse(other turtles-here != nobody)[
% u: c' s" Z1 n+ v6 I

- t( v) w  K; P  t+ Mset customer one-of other turtles-here

% G9 |5 w- N1 D/ \$ u
& }# C( H6 C5 f: g& y;; set [customer] of customer myself
4 \6 _0 G; E1 f  D

0 ~2 s' ~) ]; J% {9 A/ m7 N$ _set [trade-record-one] of self item (([who] of customer) - 1)
# p$ z6 j5 n  w7 ^* C[trade-record-all]of self9 \( y& A( M! T* B+ R2 @+ s: Q
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
- K3 E% b% N/ f% }2 A
3 S4 @' q! S5 z( x' t1 |
set [trade-record-one] of customer item (([who] of self) - 1)
5 [" P9 \6 M# g$ P; t9 z[trade-record-all]of customer
" Q# ~0 g6 k/ U6 y# T" X% U/ L* ]* ?' N
$ U" g) J% `1 D  f- T
set [trade-record-one-len] of self length [trade-record-one] of self

; Z; S) a. u( w9 T: U8 W) }  ]" G( A
set trade-record-current( list (timer) (random money-upper-limit))

2 b( H6 ]+ [( P" O2 m: r' O
0 {& |& S5 ?" @+ e1 Eask self [do-trust]
2 ?( L( P' e, M* \; {& l;;
先求ij的信任度
0 D2 @8 n# r" _. t2 O7 Y; o; K  ^& u
if ([trust-ok] of self)) T, t# k  Z% X( U& t3 a$ a
;;
根据ij的信任度来决定是否与j进行交易[
8 h& b* j5 C0 K/ g- ^ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- W: |' _% T" I$ W- C/ ]: ]- L" |* n2 M+ i  C
[

# E7 h9 ]/ _+ K3 a* ~5 g5 |  Y* L2 N4 ~& R
do-trade

5 E) M3 `7 @; C1 c0 o# t4 O, @6 S$ Z; D3 A3 G7 b6 N& x3 }
update-credibility-ijl
7 A" n* v* Y% J
3 m2 w: o1 |% @1 n1 C
update-credibility-list
5 n% ~+ j1 ]4 X! Q

( }' E5 m; @) t+ J8 @8 a" H; s
; j, D' O4 S. k5 W8 D4 lupdate-global-reputation-list
4 {) M9 K1 d$ e' ~7 E# W
& X1 h$ L3 [% [
poll-class
& ^0 j. Z$ n. B5 c- F+ I

: U7 C; d+ m% W4 j" c1 i0 Z# U. wget-color
+ ^! Y6 }6 i" q
. ?  v) Y$ P7 f& r
]]
4 _1 P- |# \( j6 e7 f- j: _- ~5 Z* g* u: d8 s; x' J3 Z0 Q( s
;;
如果所得的信任度满足条件,则进行交易1 W% _9 ~4 D' [; r
4 ^; v+ `$ q. m2 F
[
1 G/ S4 I6 {5 w) N0 G# K" M

! h( }4 j. X! j) P: u  @3 L6 \rt random 360

3 U7 z% h0 X$ x; B8 k8 c+ |) ], C7 j( z/ f+ }5 S
fd 1
3 ^/ l* L  N! g  M$ c  S- k

* v2 {/ S$ @; Q' d]
/ h& [5 M" d/ b
. c( K' A5 `6 w  T. }
end

' ]9 c9 u. z' u3 B7 H6 `: \! Y% W0 ^6 l0 [& L: C+ O% A
to do-trust ( ]% l9 a9 y2 O1 J5 s4 x' v2 W
set trust-ok False  I! P3 \6 R7 H. u4 U8 V

0 B  a) ~* q1 z7 D

5 V# N+ L4 ^2 y( R4 S: klet max-trade-times 0
$ b' L) \- I0 V" wforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 @/ z+ W' t( K9 Clet max-trade-money 0
- K- F" X' `5 m- z- W5 F. ]foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]9 K( H5 W/ H# _+ k% g
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))$ H. z3 j& {7 W8 A: ^& n9 d( t0 _  O' `

9 n8 N8 f! z% f9 K4 I9 M7 ], Q" b
  t+ m4 |5 h4 z6 Q2 U6 h
get-global-proportion
+ i- G: V4 j& R  s" ~let trust-value
- p# W* G/ _( M; u$ f6 Z/ Tlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
' K& Z' o! M. b% R; [" J
if(trust-value > trade-trust-value)
* K. f8 |. W5 D) T) f[set trust-ok true]+ S0 X6 W6 h9 P( s( A  O
end2 |% Z6 `' C  w9 _4 ~+ U) l/ b  U

0 C  h1 L, |; }% f8 y/ |to get-global-proportion
& m% I0 d, @9 ]! C  I" [ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3): _  R' a5 r  k% b6 x* O
[set global-proportion 0]9 S" w# k1 G$ F5 ]! W% D& U' o
[let i 0
- ^" @8 h2 m! \* Q2 `let sum-money 05 `# m+ W$ d7 C' Z
while[ i < people]
' I( G. l% \  H. I  `' q[, D. ]/ u& d! X7 N
if( length (item i5 A& d  _: N6 U7 A' n6 b+ ?
[trade-record-all] of customer) > 3 )

  O1 v% R- u+ ][; Y* O" ]' A  ?3 C; ?/ z3 g
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
7 W" A/ m) U8 j; W, e5 ]]
7 F) I# g3 u+ r, {]
# z$ _, w3 `, `( @+ c6 a0 Tlet j 0
* c" ^1 ]! p. V4 elet note 0
% J, K- }3 F% o  P' V7 L0 bwhile[ j < people]% E6 D  c5 d  G7 J$ f8 Q, p  m
[( i8 |. q- H: ]( w
if( length (item i4 B7 G, \7 C9 t9 J0 ^, S9 D
[trade-record-all] of customer) > 3 )
! F; u+ e- |9 i) l; R8 i/ Z$ X, B
[+ W% ~9 {2 O# t1 T
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
9 A+ O' z7 v1 L; p. ~5 m[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]0 r6 @" C$ C. Z0 @
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]3 c. T. K2 ]" v% {  n2 w) @0 ~
]
8 h0 ~& u( B# R2 _7 @( t9 q5 a+ n- U( ^& z]: G/ [* {0 _7 R/ n& B
set global-proportion note
9 r# H/ X" g; O5 h]
% u% }' Y; t0 e1 P* Q5 \  b# ]- Gend. |9 f, Y# s: d( {3 S

. [; d% z& S8 I8 P5 y* w" jto do-trade
" ]4 l# |! R& ~2 Q;;
这个过程实际上是给双方作出评价的过程/ m* R. d0 M8 w7 `
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
6 c: m( a8 [: N$ Yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价, A0 `$ m% O! D' k5 y
set trade-record-current lput(timer) trade-record-current% r2 r. H5 E: B0 @9 e& ^+ G
;;
评价时间
# W2 R& _+ {9 J1 M6 m* O/ v: {ask myself [
! ^/ U7 k; ~" X' M  d! S+ j. }3 Eupdate-local-reputation# y! I5 ?: u0 J3 _$ u0 x3 T
set trade-record-current lput([local-reputation] of myself) trade-record-current
4 ?0 v( J' a# Y& `' D0 E4 }0 b]
) e+ _, y9 T0 l) V5 m0 vset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself- U" M% v9 ^  |/ A8 r" o
;;
将此次交易的记录加入到trade-record-one
' F: O) g5 N1 \/ u# uset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
4 P, z: R8 i6 U: P! Q5 Y# ^let note (item 2 trade-record-current )
2 g4 N/ F; \! b/ e% Pset trade-record-current
% B  e7 ^& C1 d4 N: @; k* }" f(replace-item 2 trade-record-current (item 3 trade-record-current))
( m# Q* ?# U5 L  O
set trade-record-current# F5 C3 i0 Y$ t; B. o7 T3 c
(replace-item 3 trade-record-current note)9 E* x- @$ x. e% ?/ ]4 l3 i' E; B9 C
3 ?) y. I( q' j+ K7 V% Q, ?

0 T0 i" p6 ^& C- O5 ~8 mask customer [3 W- y8 ]' m; `' l. }, d" Q: }2 T# h# V
update-local-reputation
- O, q) \7 ^& C7 s* sset trade-record-current
* @3 K% f+ E3 v" z  n(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
: g) a( ]2 t5 m1 q' t4 g. T
]
' t6 K3 W5 \; z
; x& I  A  J. B

1 h# t. n& Z# m  [; Iset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
# w; ^) B/ c7 j0 ~
( o+ v+ F1 m0 m8 Y. e1 H
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))8 Y1 n/ y; R+ K0 o$ O* A' I$ {
;;
将此次交易的记录加入到customertrade-record-all; w8 y3 |. _5 B" d
end5 p, y) o! f# n# a  _% c5 R
( |1 L, r: ~5 a
to update-local-reputation
' H' B; |+ s" L+ l5 y" u, ^set [trade-record-one-len] of myself length [trade-record-one] of myself6 j0 Y, ]9 o& b" g8 G# F
6 Q  s" m. A! G1 c9 N2 Z* k
: S0 L( l5 J" V2 a! T$ {) N
;;if [trade-record-one-len] of myself > 3
, _# N9 ^6 b( w) ~  x
update-neighbor-total
0 C  k+ }: j  U! [' m  W7 Q2 }) @;;
更新邻居节点的数目,在此进行# Y4 F* g+ T6 F
let i 3/ ~9 \: p; l' H4 B$ Q4 I  u
let sum-time 04 d$ i5 E* t5 {4 D# s! K
while[i < [trade-record-one-len] of myself]
+ W) A* i+ z( U: t) B[
2 X, P6 h  v2 \set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )  o3 J. q1 h/ J
set i! W6 L1 G$ F0 Y
( i + 1)
' z& w8 V, C0 g, T8 A2 b
]
2 C. S8 I2 @1 t  Z0 Y2 r. slet j 3) U. d: ?' N5 A& s$ c. z& l  b
let sum-money 0
) S4 _7 `3 W0 c/ iwhile[j < [trade-record-one-len] of myself]
. n: Y+ e6 {( j- R( M[  E& I$ b4 A. A: O& \
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)3 c+ P) y' Y' o/ n/ S4 c+ B" H8 v
set j
0 T$ U! i' \& g/ v8 ?( j + 1)
; D& m) _" m, v- y, k# Z- J
]8 m( p5 \5 n, ?! a! C/ T$ I
let k 3
% i- H! P9 T1 ?let power 0  x# h' x$ y0 R  d
let local 0
/ U$ P; Q& V) d+ E6 Z0 x$ ~while [k <[trade-record-one-len] of myself]2 [6 a( C, A* f8 |) g
[
) ], |7 W. M: Q: h9 l1 |! lset 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) & ?& F" X) ?3 J) o% U3 o
set k (k + 1)
" }: X) ]  c8 `6 b]
7 H& ], o2 t' P, `4 S0 tset [local-reputation] of myself (local)# e% t7 X& e( z8 q# G$ u
end
7 |; t: q8 n7 I4 J5 ~. w) l  o, N6 _. K8 z" Z. Q
to update-neighbor-total  l  x: d, X) {1 e
/ m) R2 W  A: ^8 d- n+ M# M
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
8 |3 G; V$ [/ l3 V" \
$ M4 ~& w8 N- Q( c3 A/ e

  z3 ^5 G) ~' i1 }/ [end
3 a+ [0 V6 T7 i( G* t! ?6 `
7 T4 y" R' ]7 b5 Ato update-credibility-ijl . Y( e8 g$ `1 W" d* n/ ^

" H! j1 k/ I2 L8 E- y, h8 p4 m;;
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。: O" Q: \4 X! j+ K3 L; h/ D
let l 0
- y0 h3 H- U) kwhile[ l < people ]0 z& a' @2 B. p' ]/ [
;;
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
, n0 G3 ^! {/ w! T2 z+ _: b6 H6 L[
. E- r5 F7 P. o% A% O# Qlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)/ z3 V' [- _4 Q* ^$ K6 ?
if (trade-record-one-j-l-len > 3)6 H- r0 N3 Y/ v& |
[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
( G8 ^+ c: k" ~8 |% clet i 3
- s  }+ E& C/ m$ s9 Jlet sum-time 0
# F9 U$ G5 s- v+ p, w, d2 L$ hwhile[i < trade-record-one-len]
: v# \: m& Q& |( }8 q/ W" x[* u6 q& K7 S$ e; T% {
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 @5 d& x6 Z" U' `9 J/ s. Lset i% O! Y9 Z; N0 p) y! U
( i + 1)
6 V" J  ~6 |9 z
]
- z; y' `1 ^2 }1 V- a# U) Clet credibility-i-j-l 0
" L9 i# z. R# I- S;;i
评价(jjl的评价)# \: J, _6 t4 g1 e; T
let j 3- V( O' F0 `6 Q- _0 Z
let k 4$ ?( Q3 {5 V) t$ L5 l7 Y
while[j < trade-record-one-len]
; v2 ]) `( }" V7 J5 Z# a) w[
1 z- r: \# A& G* }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: Q1 ?9 \3 E. Q2 q
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)
: r4 B9 J7 `: o6 V9 U7 k3 z9 Zset j' |; m9 g( S6 X- J( l
( j + 1)

& T% X6 k. o6 Q- Z, D: ]]3 W* H* {, w( [, P) ?
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 ))
6 O; A& _) \( B. ]  l
0 l7 Z3 a5 h, s5 t8 U. F8 \& A

' Y) _! n2 J" [! g$ T# o4 Slet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 E/ a' {8 X+ j;;
及时更新il的评价质量的评价% S* z# c: g" n1 R* }) B1 c7 S+ [* ^% e
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 P% Y* T! I  W" n' vset l (l + 1)
/ g% I  z( `. D" ?]
0 L* u* S6 r' V, h: ~* t8 wend  T2 z6 z# O- ?& z, D2 ?
  n! a- i% Y/ u8 Z, e2 m6 \/ G
to update-credibility-list
  ]5 D' o- y$ P7 y2 Q& Alet i 0  U0 j  @: ~$ k+ M- ]
while[i < people]& U+ X8 \0 X1 {! C% r8 ]( d
[
! G8 l7 W: E2 m" _' @# g: Ilet j 00 l. K6 s* f' J, F' q3 h' A
let note 0. d% t' S, A: @. `
let k 0
* ~! ^' z: ?5 w8 O! Z;;
计作出过评价的邻居节点的数目
' O) A' j, k3 U3 |0 k# y% Z& n- Ywhile[j < people]
6 F; g% I  i6 |- V[! U& w5 N5 G" P" |6 `5 Q* ^. m
if (item j( [credibility] of turtle (i + 1)) != -1)
) `- q2 o7 |4 _7 Q8 x5 Z: E7 D! C3 q;;
判断是否给本turtle的评价质量做出过评价的节点) D/ n- L5 D# S: A( g
[set note (note + item j ([credibility]of turtle (i + 1)))
- p" U0 x4 S; W;;*(exp (-(people - 2)))/(people - 2))]

3 f$ W% \: `+ `2 J* Dset k (k + 1): Z9 ^. F) z7 k" T/ C$ _6 c
]
2 y7 `" S( e* B; Y7 d8 Wset j (j + 1)
. X4 N) W! ~7 {9 a% Y3 v]8 P( E2 l3 {: L; U
set note (note *(exp (- (1 / k)))/ k)1 @: J/ ~5 D8 |7 ]
set credibility-list (replace-item i credibility-list note)
3 f& G/ ~6 _" N* n+ N0 }; X$ ^+ hset i (i + 1)! Z( R. w9 F1 w4 O) E
]
, ?* N5 |* x$ C6 G0 e# m1 H8 x3 K8 {end; p$ L8 Q$ ?3 U+ c+ x
1 [# x* K# c4 M) q# d- C
to update-global-reputation-list
% N8 |0 O4 c# B0 R  Y5 h( Flet j 0
+ @0 g; l* ^" h0 P2 O8 ~% D4 v" |while[j < people]( g  n9 E0 S! U7 E
[, R% j& ^" C4 m5 J
let new 0
% b: R$ G6 C% W8 i/ S* z. q" p;;
暂存新的一个全局声誉5 E3 N) [* s8 Y* ?9 i5 B' v
let i 0
! B- a; c. q% Q0 U, hlet sum-money 0
9 h/ y- e! j1 X$ \2 `+ _! e% Rlet credibility-money 0
! r6 @# n8 t; F: n  c/ h7 V, Y. \% Uwhile [i < people]
. o( Q/ a5 Q9 `8 F6 v( p[# |: m0 b' M! i* N
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
$ D! [6 R( S9 i0 Q% Y: tset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
( r  A+ V8 d( X" Q7 _! ~set i (i + 1). v+ T  L; M4 d9 r" l1 M
]
; V( [. e6 m5 hlet k 0
$ v6 n; T8 t! i/ L4 S! k5 S1 ilet new1 0$ `* H; W: Y6 L* ]; E7 e* @
while [k < people]
  e1 M. \0 P' ^  e3 A2 K, n[$ |7 D/ q& j1 d
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)9 y- B3 j* Z2 b( j5 \$ e1 u; v
set k (k + 1)
: F3 B/ C# O: D8 ?]
+ z. z- f# ]& N1 c' g% O# u% ?( bset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
& M" T3 j) I4 Q( Y, gset global-reputation-list (replace-item j global-reputation-list new)0 O1 `; v+ R0 i5 q, }& R* i4 O6 H
set j (j + 1)
  T+ M: [8 J! ~* [  k: q1 }7 z7 A]
$ V: w/ N4 N: E6 G  k, wend) Y$ {& m: A; y, A( ]8 n. h" v
8 I) r8 N$ [1 s: ?2 ~, C5 i9 V
9 r1 j+ S' w* u' i' C- ]
9 X; T7 m% h2 C$ R! J- J
to get-color& I) N2 d* [7 j4 d7 H) A0 m

8 |  ]: j/ y; R, j$ O8 aset color blue

% ?* T0 D) n: J; e0 Fend
% P2 P, |3 t* @' g1 m  O2 O6 I5 Y  G( T* ]* d( z4 j; |
to poll-class
5 s# b% }3 W) A1 C4 [( R' tend
9 {+ N# l5 s% D8 |/ f- p& T6 H% l' X9 m6 U
to setup-plot1
  i2 L/ d; G3 H" b
* b# K, m8 n8 E+ Y% f9 G( C2 iset-current-plot "Trends-of-Local-reputation"
- j/ z0 z* f+ N. C; L) I) y

3 a4 M  X( m. j! T8 m% \set-plot-x-range 0 xmax
+ O# C, |+ |# Q
* }( u( o2 u0 {$ a4 ?
set-plot-y-range 0.0 ymax

: |" ^, S" M2 O! k5 I2 \" fend
  B6 L6 n3 I! m$ t4 s! p
' Z3 ]% W2 E* v/ a# a& Qto setup-plot2$ k3 ~$ s  R' s* B& w
' y* u( y; S$ Z& L
set-current-plot "Trends-of-global-reputation"
8 O* E) j  k$ T$ G' D% |
7 R6 U! \- Y1 m# \! N
set-plot-x-range 0 xmax
, C/ |, r* M  E8 ~

+ l- R6 l( v9 O7 d" E* D5 f- zset-plot-y-range 0.0 ymax
1 @  b3 \5 S2 n7 K' Y
end+ |$ O' I  D& |6 S& }% d
/ e. v- h3 }4 j2 u1 j
to setup-plot35 ~1 ^0 E3 j; j$ t1 q% k
  P% P# s7 T; t& ~5 N8 z0 m! g
set-current-plot "Trends-of-credibility"

# S8 [' N8 N' L& H
# p, M! M( h2 T& ~5 F8 Aset-plot-x-range 0 xmax

4 |; t9 H# c# I9 u! F: i2 g; D* V$ E; X
8 H% x  \9 R! ?- r: Xset-plot-y-range 0.0 ymax

9 a! r  O1 @; N& b- c1 hend
( A% W6 x3 a. V: L: Y) s
/ k0 L/ B4 ]5 v' P: y' \3 l7 gto do-plots1 F( I: m4 t9 f; |& C
set-current-plot "Trends-of-Local-reputation"
6 v; l% T) o' L6 ^0 pset-current-plot-pen "Honest service"
$ o- r, S6 W2 z: Bend
0 c) {# b  K' M; P8 m" Q# p1 ?$ |7 f
[ 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.
* n1 Z* J) L, D9 p9 f$ V  f  c! s6 n3 L
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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