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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:
  r7 n9 X& D/ @to do-business
" {7 U6 v- R" O) i rt random 360; @: m2 E7 z/ g( y- |
fd 1. Z  I; X* |# _( s, }+ s/ h: K
ifelse(other turtles-here != nobody)[# E; ?; f% T! o; W& w5 N& P
   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.
( q4 i0 p( o& V   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    - [- D9 F9 Q, f4 s* m3 e5 A
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
( v: h( A* T- C   set [trade-record-one-len] of self length [trade-record-one] of self
. f2 ^5 M: q+ ?, i/ m   set trade-record-current( list (timer) (random money-upper-limit))  ~+ v8 i0 T" K+ J8 \4 i" ?# j, _
  d$ m/ x( B  E  y( U! @
问题的提示如下:4 ^: N1 E4 [8 K
' a7 I! N/ e% |4 g
error while turtle 50 running OF in procedure DO-BUSINESS' o, s! n2 Z: @. G1 n$ M
  called by procedure GO
1 v! t$ _& Y# s' v" z1 t8 z4 W5 yOF expected input to be a turtle agentset or turtle but got NOBODY instead.1 I4 p& [( P4 `2 T+ _
(halted running of go)
5 {, J- t( t' T# B" o$ ?+ F, _/ Y- |& J0 r2 }9 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~~' h$ O4 o! m% k; h8 v/ {1 P0 s
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
+ F: e, k! e. b5 i6 iglobals[3 A( i$ J' u+ _# t
xmax
# E# }2 d$ J* `# {: ~* o8 vymax/ L1 l9 U5 Q# z! Y6 L; _* C
global-reputation-list, R/ U! k% s$ o9 Y

- g5 q9 n1 K- j2 U' D0 w& ];;
每一个turtle的全局声誉都存在此LIST
" O' f& r) ?0 C. g/ Rcredibility-list
7 v* s& Z" E: u% G& L: H, t& _7 b;;
每一个turtle的评价可信度  P3 P7 \/ U* Z/ D; {; D
honest-service) X2 I$ o1 e; d% W. F. B
unhonest-service5 J' L- s. Q8 A$ d; N" h
oscillation- {! Z5 i5 X$ Q" _! i+ c& b7 U  E
rand-dynamic
) D! H# n) @' D+ a]( M8 L- j' |7 U

* B+ k7 N$ y' e- g0 y- t$ ]. Sturtles-own[3 Z% X/ g. Z* m$ B  N
trade-record-all
: F8 E* i( j, v;;a list of lists,
trade-record-one组成6 m" S5 S: d9 {& P$ J) w) E
trade-record-one. H: C/ e' E  q+ h/ s! B) M0 r
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
/ p" X; f" W: j7 \
- ~, S. q; p# r* d- V;;[
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]]5 Y" {1 Y& X5 r8 T/ J0 M+ Y0 [
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]
1 g4 _9 F4 p5 R* U# icredibility-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; o6 x7 v1 o6 I
neighbor-total
' L5 y! o& K0 C$ Y;;
记录该turtle的邻居节点的数目
) c3 k" F  c. Q, gtrade-time
5 Y9 X3 `- ^0 e* v;;
当前发生交易的turtle的交易时间
3 ]- i2 s9 H' X0 V; ?- X9 @appraise-give
* c" W( f1 X6 s;;
当前发生交易时给出的评价& ]9 P% s: ^3 w6 w
appraise-receive0 W- l: l; U: p+ Y
;;
当前发生交易时收到的评价
$ V* l" o5 ?( U2 I) D' p6 _appraise-time
0 a5 [; ^6 t+ r" H;;
当前发生交易时的评价时间0 k/ ]8 P' ]' g1 s/ Y
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
0 R9 J0 w+ q2 I' ?+ Vtrade-times-total% e6 _. u1 m9 f) ~, ~, ]$ y
;;
与当前turtle的交易总次数) J7 k8 |" |9 W: H
trade-money-total) X  R+ s# m. W1 G7 N0 i
;;
与当前turtle的交易总金额
0 i7 T3 A( @2 i% V1 D1 L: @local-reputation" C7 E. O/ b+ L" E9 }
global-reputation
/ Q5 F# c9 R6 C" r  }credibility
" q6 R( ~2 V1 x) e% N. X& Q;;
评价可信度,每次交易后都需要更新# S5 o* X( H2 s, H+ t
credibility-all/ E' o: H; t8 t# O0 _
;;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
* r3 G; \) Q3 h
" o8 S6 G) k& T; }- K4 \" s* ?;;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
, o9 X1 s8 Z# X  ]/ a! K+ vcredibility-one5 G, C2 h2 }) m' a$ }! p) L
;;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$ C: v9 k, [4 o& S1 P
global-proportion9 `$ b# k* t) |$ ~8 U
customer
' }( _/ c+ E" e/ acustomer-no4 ?* p- z. w6 K( ~+ y& `& f$ Q! S
trust-ok
! I! T6 s/ u% J7 dtrade-record-one-len;;trade-record-one的长度
& Z6 h$ F5 Q' P! n( O* []& }! V  O: w3 C" Y: N

: {; g3 p  C2 u  N8 ^3 x;;setup procedure" y0 N! T. {9 X

9 m' ]# f2 O9 N; gto setup, f  R- W1 E! n9 d* M

8 Q) q- S2 N! U( J0 s4 hca
1 n3 G) r( T/ v* }, @' T, `
: }' w4 t% b! r1 U8 C7 T
initialize-settings
) K( }3 k4 K) T/ e/ s+ C$ z1 U
! {9 h, G' z/ E$ M& M; k+ H
crt people [setup-turtles]
8 ^" v7 j+ A1 |; \# U
9 q' a0 R' M& f. U. J( D+ x% z7 C% T
reset-timer
1 n; S& R# O0 f( x; M4 E3 i9 B

5 g5 D- w3 h$ M9 A  ppoll-class
7 J8 S( |/ j5 L2 E+ u

+ p- m/ F  u( a5 a/ d1 M6 z4 xsetup-plots
2 J+ D/ g+ z6 V% s( n
5 Y* }$ A' y4 c, s
do-plots

1 s6 a& @5 G& Z( Cend5 W* q% a1 O: B3 j: f0 n& B
* v) C) D% [5 N9 b3 v7 ]! Y# Z' N
to initialize-settings
! m) X. F3 p( @6 f. X7 l$ d# ^2 {& J+ f1 \, }
set global-reputation-list []
" d1 p* R# _. _# L
3 D5 J4 O7 {- p
set credibility-list n-values people [0.5]
8 E( F+ z, U; C& c! ~4 @7 K

' T% C9 \( U5 J7 o# Pset honest-service 0

4 Q% P5 F* ?/ X; `: G; A9 R% I5 S) A
set unhonest-service 0
) _% K7 ?5 e1 W. R/ h1 w

! \1 ]- o1 o+ v/ P- r$ K/ \set oscillation 0

+ R) O' ^! v7 V( S' b! D9 t$ U. u# R4 o' c- c+ z( q4 [6 w
set rand-dynamic 0

5 T/ {' C& B4 U+ bend
8 Y1 U6 U: O  N; z6 n0 v8 H4 T) G/ \7 n0 m
to setup-turtles ) ?( M5 V" l. J) q$ F- r8 ]" `3 B
set shape "person"
- E) ]% D+ r+ h# Jsetxy random-xcor random-ycor
4 ?) y( {- O& [* n/ P' Gset trade-record-one [], p" Y# R" U, A/ v/ k) i5 [
, ]% q/ Q4 d+ x5 E$ e
set trade-record-all n-values people [(list (? + 1) 0 0)] ' d% s0 [+ {5 e; r- s
3 `+ {5 [3 U8 @
set trade-record-current []
4 Y! m, J/ q" e& F  H' Rset credibility-receive []& H+ w% u+ N( s9 o# u
set local-reputation 0.5
0 i1 P; ~5 n) u: i% ^+ Fset neighbor-total 0; N0 L3 }' T: b7 N5 @1 X
set trade-times-total 09 L" N' [' _: I7 M3 f% Z% i
set trade-money-total 0
* ?1 A7 x/ ~/ u5 T& qset customer nobody) t! T# E' m9 W2 r2 v8 C
set credibility-all n-values people [creat-credibility]1 H2 r& E5 e: f  ]
set credibility n-values people [-1]
- ~- x) |( `, C" ?* m# s" |get-color" L% A2 ^" I9 }. y7 t7 G

$ B! }+ l% H) @7 h, gend) t5 `- h4 `0 d. H% w8 o. \9 j
% E+ G3 m: \1 u9 M5 W: W
to-report creat-credibility
" F$ @1 Y! Z( `' o& B7 Jreport n-values people [0.5]0 T; `4 M" B4 `, p3 B: B- |! L7 J
end9 Z' X; P% k0 T4 L
9 i. b( H0 N7 b4 S7 n/ K
to setup-plots; i+ j" |/ S1 Z' l9 x

+ O; p* c# p& b/ o$ aset xmax 30
$ P1 |, ]# |2 n% S
6 D0 j1 A, |8 J/ U. v1 V) x
set ymax 1.0

$ m& J9 y8 f( }5 M7 R( m. ]* J6 G# R2 M! S
clear-all-plots
! C, N8 Z0 q* A; l) k7 S5 j. B

& F( w- \+ t: f2 f* wsetup-plot1
0 f2 M; ~1 h, E# g" \
- j9 h1 ^2 V1 e9 ^3 w6 b
setup-plot2

  Z* D2 w  D( [& p" U
7 ~$ I* R: I( ^5 Q3 I* A( Bsetup-plot3

. w. s% j- F/ J2 i& fend( p$ h: h  m9 O" }/ d6 ~

2 j( h2 a7 W+ U;;run time procedures
3 A& A' r! m; i: X* q5 c2 l) T3 H0 T+ t
to go
: h/ o5 q% j! F. y# q
" W5 P8 O- Q, G. R; B7 Y  y; }ask turtles [do-business]

7 P6 ], q2 {3 X& cend
5 e" q- }: k! j; q( a
5 @2 |3 i% A6 K- N1 c/ l4 X/ f0 Qto do-business
, A+ t# u; u3 n" g: n; b
+ _; k" l7 d7 R0 {$ R! V- u. f. ]
1 f- h7 g3 @, a8 X1 o
rt random 360

; u* F) c+ b, m2 A$ }
' f0 D* X9 a; ?* q* u% i8 cfd 1

  ^+ O9 Z1 v  g  e- F
9 ]5 V) e7 Y$ ?& Z+ s* |' Zifelse(other turtles-here != nobody)[

5 p# [8 b7 K" S* D. W- ?0 v
& J$ M9 Z# p. g. gset customer one-of other turtles-here
" d, c; i! x5 C* L% Y$ i
) q9 K6 A7 x, O4 I
;; set [customer] of customer myself

) T# Z% r# o. g7 ~
4 m0 ?. {8 E/ X+ w4 D' h0 eset [trade-record-one] of self item (([who] of customer) - 1)- y5 U" A- r/ O' M
[trade-record-all]of self( V, P5 i+ _/ c& `& n- f. `4 g% q3 Q
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

7 U8 a+ M3 r. M! c8 S9 q6 {
7 R4 L6 n# Q" U0 M1 zset [trade-record-one] of customer item (([who] of self) - 1)
/ H0 f+ L5 {8 H: d1 `[trade-record-all]of customer
. I! ~; q3 ~6 b* l" M
, C' N2 S! z9 I0 ^7 x
set [trade-record-one-len] of self length [trade-record-one] of self
+ g6 j9 e/ G, q9 ?
# r; q4 M2 J6 O$ m
set trade-record-current( list (timer) (random money-upper-limit))
8 a, O2 l; _1 I+ F5 [  _) s$ Z

0 w1 w* V- j. U, }1 N1 ~8 W6 ]ask self [do-trust]
6 R7 e& A9 m, V" S;;
先求ij的信任度: a, W6 v8 H. U+ g: J! Z/ m; {

0 z9 k( g  R; Y" jif ([trust-ok] of self)0 Q9 ~5 o. n  D. c$ i* J+ t4 F3 L
;;
根据ij的信任度来决定是否与j进行交易[
. H; Y' T) D, u$ A# g( |ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
3 h9 i+ @. |* @- A4 W( G4 K: N, v( _
[

; d( Y" i& K* P" \
- Z/ L( C. H+ P/ udo-trade
; H3 R# Z3 W2 X  }; \

' C; U' H5 V" {4 P' Z6 eupdate-credibility-ijl
2 b: w  k0 a) S
6 m/ X  y3 r; `2 b& S
update-credibility-list! X* P% j* X! B# M2 L/ f( y
& _/ c; }/ U, g5 K5 `

% W! C6 m3 ~' x3 T& P+ L0 [) Vupdate-global-reputation-list

0 z" o- \; S* n+ h; y: T, U4 a9 w- g8 Y/ V; f( x) Y8 b
poll-class
" a. ?: |8 D$ n

( P2 |5 U* B# gget-color
$ I+ I# O- e/ r  g! c
* j  J5 N6 _5 C
]]: Q$ g0 a1 K2 f! ]! v9 K7 s
; }7 M0 Y; N0 r4 S
;;
如果所得的信任度满足条件,则进行交易. _$ T4 n6 G3 K) L  `
, J$ x# m* E0 x6 ?& D; n
[

. t0 h  U4 T( J6 N9 J
6 x8 w4 U6 _  _; Q1 U7 `rt random 360
3 q; ^: A/ ~( h. Y2 Q) `
5 W) `( o: r! s* S$ G+ A: H
fd 1
! |  T0 X* M  g4 N1 d

$ k/ b7 p% A+ S2 ^8 c, Z, W6 y]
! \/ |/ O) y) T8 Q

, O# P0 F& {% s- _  Y+ {2 j1 Hend
6 \8 E- C* D. t3 h9 Z% j# W5 B
4 @& V$ [$ m9 p2 y0 r* K4 g
to do-trust 0 K  V: a0 n7 O5 `
set trust-ok False- O' |0 S% m' ~, G
+ d# v7 ~1 e; a3 W  p, A
- T2 i3 V( j& Y8 u# \* H" i. N
let max-trade-times 0/ Y# e9 z3 T8 P8 Q
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]2 s  H6 \* m! Z# K
let max-trade-money 0
1 k. D5 f! [, Wforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]) N# q7 [4 i7 A7 q
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
3 ]) d* K* i! M" }7 @2 z* E; U; Y9 @3 X) z# M1 S

& n* s" {( a4 N1 Z+ Q  ^; y3 Jget-global-proportion
$ W* q1 Y& c3 @# Elet trust-value
) B$ L0 o! d% J; Dlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

  J+ I5 \) J3 y+ U6 s7 T. G. fif(trust-value > trade-trust-value)
) n/ a" \( Z9 h8 x- @[set trust-ok true]
6 D& K5 U8 h0 p; |end
& S& R/ V& y: x' ?' X$ T3 }2 {& U& q  B# |
to get-global-proportion5 M1 x4 t8 V) v, u
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
+ u/ n$ h2 l% X/ B  j[set global-proportion 0]1 \8 {! c  g/ m) @7 ?
[let i 0+ I  v: u1 S5 J. G0 n
let sum-money 0
. C1 c. e+ k( P  Z$ y! N1 }2 }while[ i < people]+ X* q# G8 g) ?3 e5 h
[
$ ]8 I# I1 i1 i- V# y) b! `5 t0 M; Cif( length (item i
. T6 |/ X$ _9 m# ][trade-record-all] of customer) > 3 )

3 w7 F0 A- l7 o[" O1 Y8 N# m9 k% z
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))# F* T4 g5 x3 Q+ O6 G) C5 [
]9 n, a% a6 v) h& M6 o8 I
]5 \$ X: I7 r: R- h4 `& w& v
let j 0
( z" G, q' [  v, `( [1 ?let note 0# q5 ~6 P# G# a2 r6 H( t
while[ j < people]
) x6 h/ ^' D. m3 o. p[0 n* n! e. j  U: U/ @; h2 `
if( length (item i
0 N8 t& e) E1 a[trade-record-all] of customer) > 3 )

4 w) J5 [' `+ h, S4 \' J. ]* I[
+ e, y1 f; G4 ]0 e/ x& f! hifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
) n+ V$ g$ B* C. ~9 P3 Y# y& l/ M[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
% Q/ s' a& G: o" F  R[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
  D9 E/ t) ^& j* I& O]0 O  G6 m- {% [# E: o
]  T. l1 s& H( v: o0 ^
set global-proportion note
1 a- t$ g5 g! T, y]
5 o% p/ [6 N# t2 T' c, mend$ Z( o* R8 z3 L7 z$ c" x
! H) g4 K& Y* h. o7 \5 y. n
to do-trade
/ d7 G! E/ i- l% d7 j/ |# p% ~;;
这个过程实际上是给双方作出评价的过程  b  m$ h' C' k: t2 y4 |
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价2 m$ U( m2 Y, b7 q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
3 P  ]2 V6 O/ }2 z& C" Q7 Hset trade-record-current lput(timer) trade-record-current0 j* L& N; T  q
;;
评价时间+ C& O) a* \4 v5 r$ \/ V
ask myself [
. x4 x0 X1 V, eupdate-local-reputation
4 l& s- H, s, Y: ^9 J7 Jset trade-record-current lput([local-reputation] of myself) trade-record-current
9 y2 b0 ?* g8 e, V]
1 }/ t. Y' L( l/ nset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself& Y. o2 A1 Z$ R0 d
;;
将此次交易的记录加入到trade-record-one
5 A. ]7 z/ e- z1 s0 H6 j6 vset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
& R, L0 y) Z; x! `/ j* w2 Blet note (item 2 trade-record-current )/ }: N' C4 p' C8 J9 g
set trade-record-current
' {3 r- C# x  O$ ^0 p(replace-item 2 trade-record-current (item 3 trade-record-current))
! W8 [) k) b5 t
set trade-record-current1 q, ~' b7 k' f. [) [( Q* ]
(replace-item 3 trade-record-current note)6 q9 ^' a/ q' i; T. w

* r2 Y% l3 ^4 V

8 s" `6 Z7 M) T- L9 a) }ask customer [
% n, r4 n0 p& S* l8 }( z, u0 ^update-local-reputation
2 N/ R+ Z1 K8 X) V. Nset trade-record-current
5 @' }6 Z  A# L9 C2 k: O(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

8 `* s% [- [& U- P  Y, l  Y]
' |8 R; r- T! G2 C6 P. x
4 e9 m  [% [2 W, v
8 `: m* H* q- l6 m. c2 ]+ f
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, t% b4 C( z; ~* m- t& t9 ?$ o3 s

( ~' P" A0 Q5 l) [' zset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))7 B1 s2 ^" r: X1 V/ \  q
;;
将此次交易的记录加入到customertrade-record-all
! E! i( ~% ~! U6 m. Aend
2 S% H, r" |4 ^5 S' {: |! f
% J# ?8 v8 T! P! i+ B4 Jto update-local-reputation5 i: ^$ s0 [0 d
set [trade-record-one-len] of myself length [trade-record-one] of myself
; R/ ^6 I/ g  f. [& I5 w- ?5 ^; v0 J
6 {# Y/ w. ?2 o& b
;;if [trade-record-one-len] of myself > 3
; y) S: g( {8 n% w- z% T' Q
update-neighbor-total( n, D3 ~3 }. d& M! _
;;
更新邻居节点的数目,在此进行4 z* ^4 |1 c" i( y
let i 3" e: a6 ]+ B2 S$ K. e6 A
let sum-time 0! G9 D* {% i2 a0 ~2 O* Y
while[i < [trade-record-one-len] of myself]6 A) A0 j8 @+ M
[+ |" V. M. p# S" |7 s
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). h" j9 d" C! H, Y- T2 G
set i" y& B8 i' a( {! S
( i + 1)

; i6 Q. m4 n: t  l% ?$ s]% J! L7 v/ q4 U( h! ~  y$ }7 A# a/ N
let j 3) |8 }8 e/ M# l3 q
let sum-money 0& ^5 V2 h, L& i' ~2 u5 @5 H) v
while[j < [trade-record-one-len] of myself]$ s) v2 K1 w9 [1 ^
[/ S! ~# n: d3 \2 T. f. D0 ~
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)) q& V9 m& a  e2 n. v4 `
set j$ T1 X$ M: T4 l2 A! Y2 l
( j + 1)

% b) }# T5 h4 f* w9 {5 X, K]
( l, U. T6 T0 h8 @9 b7 w8 alet k 3
7 [8 |: p' C$ R0 tlet power 0
- U/ t+ v8 V6 D5 E3 u/ m6 I- A5 ilet local 0. z# J/ x0 h7 j& W/ M6 z( K
while [k <[trade-record-one-len] of myself], u2 \0 j9 s6 d& A. F/ e& S8 l" k
[
$ P2 X% }) F/ Y2 t, b1 l8 V8 ^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)
2 ^: J$ Z; c+ }( m; s6 Yset k (k + 1)+ m# ~# L' I* G6 P1 P' {, e
]$ ]4 y' @: S7 Y' [3 a
set [local-reputation] of myself (local). T+ F  }% h+ y- B; i% S$ ]
end. ?  R3 R- d, @9 G$ y$ z; D
$ Q/ [  F) t+ e2 D+ P1 I$ x5 u
to update-neighbor-total
0 \$ @% Q2 Y! N7 g" a2 @3 g, z, E  r; l
0 _$ Y" b1 T1 Y5 _6 x6 f1 _  P& N  Wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 W, L1 ~6 o) `1 t

0 Q# C7 g. I1 z1 r5 h- D4 w# H
5 v# c. p% o& n4 W" c3 Y
end
. d$ C- `5 S5 |& T; N" ]3 A1 A9 A- @3 q
to update-credibility-ijl 3 L( v3 |6 G* H% Y# i

  L0 x  Z2 z- j! w8 e: g' u0 h% [;;
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。/ q/ J5 R& }" B2 a5 h% ]
let l 0
; X9 A  b' r- R7 k* ^+ ]while[ l < people ]! I2 @8 s* j7 S9 V6 n
;;
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
" u8 h' Y  k& _# B* I+ Z5 B0 P[0 X! n- A( z6 x5 X2 R* P
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)/ \" k. c- l4 r5 `
if (trade-record-one-j-l-len > 3)
9 Q4 y0 j# p5 q8 Q! A) a: ]% W6 I[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$ o5 I; x5 c* H
let i 3
* t3 p& O5 D7 f9 o% z0 w% ~let sum-time 0
2 T, ~5 n) T$ z" j. l8 Wwhile[i < trade-record-one-len]
( d& J8 E" |% f% C2 c5 i" O* A! @" q[
6 C; ~" [7 r! B( L, T$ X& ~% bset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )( E2 U) z( ~! V# _, q  r! f2 W
set i) v* @; k, o# |0 u7 W$ \- x* Z0 Z$ l
( i + 1)

) o2 ]0 W, `5 j3 j0 b]
7 E, a: ]. O, X' o$ dlet credibility-i-j-l 0
& k9 H6 D$ Q7 A$ M. h# m;;i
评价(jjl的评价)$ |/ a8 h8 j! d) }. J; y- U
let j 34 Q3 T/ D% m/ A7 H5 ~6 M7 O( s
let k 4
0 y1 W9 @4 u5 O" c% U# h, `. @" V& Fwhile[j < trade-record-one-len]2 O" r' ?/ p1 Q: q5 c) V" A/ b
[0 a) F) E  C8 ]0 h* x
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% q. U. e5 Y" s' l) `! ^$ h4 bset 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 N& O3 M; t; w9 w& W8 q: G1 \: gset j7 d+ r  H7 O6 F) G  s
( j + 1)
5 ~6 N% ~1 p! Q5 i$ G- _6 k( f
]8 K5 p7 \! v1 {
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 ))
/ i1 ^; [4 B+ Y7 \: T) D8 F: {8 ^6 d# f. o4 |9 |0 B: o- Y' i
1 R2 R$ P( l7 @+ L6 z" C
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)): T$ p! v$ a% N3 T) A+ M
;;
及时更新il的评价质量的评价
: c5 _1 J# R; N! e7 a! fset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 k: t8 {$ i! W! iset l (l + 1)+ W/ ~$ ?4 Z8 t; A6 ~1 @
]) Y3 c2 n8 P7 F: v/ S
end7 f% g/ |/ Q+ ^9 j( m8 w/ b8 ^" N
+ S# L& w% K* `7 Y  q% s
to update-credibility-list; L9 v6 a. K7 U; \
let i 05 @! I6 c' B* p! V4 z$ [/ R3 E
while[i < people]5 {2 c/ [4 u# _  G
[
  D$ ?7 l+ Y* ^# L! A# @let j 01 X2 U3 t* i- b4 d4 {
let note 0, n' J! F# ]2 \" X" X
let k 0! m% c% P1 O4 g! q6 J8 @
;;
计作出过评价的邻居节点的数目/ P  B0 ^* p- N9 {. }$ L: F* D
while[j < people]% {8 f/ D1 N3 J" y) N) x5 `
[8 o; o6 z( s5 B  _  ]# {
if (item j( [credibility] of turtle (i + 1)) != -1)
6 z; |( Q8 ^% a4 I0 I;;
判断是否给本turtle的评价质量做出过评价的节点, ^. r2 W( [) X1 l
[set note (note + item j ([credibility]of turtle (i + 1)))( M; F$ F, m' i" ~3 }* F
;;*(exp (-(people - 2)))/(people - 2))]
7 |- t5 D9 t( Q  n
set k (k + 1)6 g! h! E4 d# F3 |8 ~5 m" J
]
& N; y) }8 `& k! Bset j (j + 1)
4 R) U8 y4 n- E8 B]
" @/ E7 e( J! g3 ]$ o! w! t  n0 gset note (note *(exp (- (1 / k)))/ k)" M+ z# r: X" Z2 }" a
set credibility-list (replace-item i credibility-list note)4 @, E9 e, G. P* I
set i (i + 1)# s, U+ K: U4 B
]
! }, j8 s0 t8 J* z6 t8 a; j8 Vend5 R" ], S8 C: K# }; o: u
2 Q4 j9 B' G6 U( ]7 \
to update-global-reputation-list
, L& A' v! d' b( M3 y" o! t5 Flet j 02 M' W: _- F' ~' \% l
while[j < people]
9 c9 K3 S1 X- u6 E9 R' `& q0 @[9 P- R5 N& {2 j6 S2 T4 [' {
let new 07 Y: T. j  m- j1 t5 ?3 j5 W
;;
暂存新的一个全局声誉! E0 I5 R  s! ~- P
let i 02 w, B7 p1 |; Y" p( m- a7 Q- \3 l
let sum-money 0* @, X* W% p4 [& p% m" N
let credibility-money 0
% a0 p1 u% d9 d# S4 X( Q6 o$ W, Fwhile [i < people]* C5 e* p% x. c' E4 n5 {' j2 n* \- O
[
% T8 Q' p! ^6 j& t% t1 A! N+ cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))); Z5 B) i" S/ J6 l
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
; [, C+ e+ p$ b6 O2 [set i (i + 1); o' K+ \+ V& P6 f
]
! c' r2 `5 L* a( ilet k 0* ?  C6 E" \9 W( S) l; j8 g% [
let new1 0: K& c7 O& w1 c& D7 x
while [k < people]
" x- I( M# x' `) ~; E5 X1 p5 O[
6 X: W! V6 f/ S2 K" D; Nset 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)/ g& M1 N4 @, D7 P( V
set k (k + 1)
; t$ `: |$ m3 ?9 p) H7 o& F4 M]0 f- r  }# D) o; Z3 ~" q# |, y1 o
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
  X6 }9 M1 K- [/ Q$ z) V6 Q' m. Hset global-reputation-list (replace-item j global-reputation-list new)
/ A1 s. G) P0 t" W7 R9 ]5 @set j (j + 1)" f9 a5 ?) }" C9 h8 s& |/ D9 q
]
4 O0 t4 T! _6 Z  I5 C( t& r& pend
8 a* P0 f/ |7 y8 {$ O  T. v9 D1 ^. b: O8 T: k

% Y9 t! M' b  m; ]8 D4 `- P* K) Y  n
to get-color7 i. ?2 ~$ s% b& m
  k9 L4 y$ a; M& g& A* |6 j
set color blue
$ Y' R& O5 N$ p) p: Q+ {# ?
end% B9 @. R9 \  Z- L
2 U# q% ^! K1 |3 k+ b2 I' Y' I$ Q: l
to poll-class/ Y1 B! @3 S& U" R, @
end5 v* s' Z5 W! O$ C) s  {
! i; ?# d  e( g& L0 U; T6 O" i
to setup-plot1
: M& N' `5 u& [- Z& Y' V1 @7 ?+ t9 b, |5 ]6 u
set-current-plot "Trends-of-Local-reputation"
9 Z/ w' g3 n& P9 I

* u5 k# C8 r: @5 Wset-plot-x-range 0 xmax
/ I# C5 M/ ^% {* C7 V( {. a; w

5 |( z$ L/ }* n$ v& S. r* nset-plot-y-range 0.0 ymax
% [% m, V" |  V3 t) d2 {
end3 O8 W' v5 }. @  d7 a, F: b
7 X  S0 g: I  c1 _8 k' s0 e
to setup-plot2
) ]) a  ?# J( `. J
% u$ N' |. x6 C$ C; uset-current-plot "Trends-of-global-reputation"
% e3 S2 K2 J. _7 g* J. H& y+ K
1 X' J/ \& ]' o
set-plot-x-range 0 xmax

8 j7 C4 X0 d+ D
9 {5 C% T" b% B% i' i4 a1 xset-plot-y-range 0.0 ymax

( U5 @# T: X- Z5 P! pend
) `) ]! r- K6 ^$ u) F/ n4 Z! ]6 W/ V" T) J
to setup-plot3/ Q& c! u9 d3 p6 @

# A" ~1 s+ t* f! Y1 Y% Z3 [0 d7 [set-current-plot "Trends-of-credibility"

# D% q% x& Z( g* F  \, o7 o% G3 t9 X0 o6 ?+ `. k% U) _9 u
set-plot-x-range 0 xmax

  S6 ^2 j- }! `5 L2 i- J( K9 X2 J! {- Q( g2 J+ t
set-plot-y-range 0.0 ymax

3 P- X$ b! O1 B9 a# z( ]/ Vend) L, I- d, M9 C6 L, U3 f
, G1 u6 {* b* O
to do-plots
* i$ R, d. v3 S0 e7 {7 k, Gset-current-plot "Trends-of-Local-reputation"
1 x( w% c0 ^7 A# rset-current-plot-pen "Honest service") |6 X; q" i9 {5 \
end# p( B* T/ U6 P: Y5 w9 k
2 O* j" w  F/ W1 @7 I
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

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

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.* \2 D% z4 @3 C) q

. T4 }0 j4 A0 U* k8 I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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