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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:& S6 n2 t1 y4 A' N7 D
to do-business 9 ]5 }7 R1 D2 a$ X
rt random 360) ~  I- o% p. q# b
fd 12 @' S/ f8 A$ O% ~! y; }+ R8 K5 G
ifelse(other turtles-here != nobody)[
, M. _. d% _* Y0 S9 j% 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.& T9 [$ g7 C4 d$ R. L
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    1 d. N: M' S, |% h! P9 y
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer+ i; u" v" ~: _8 H- q( Z
   set [trade-record-one-len] of self length [trade-record-one] of self; Y5 _$ o6 e* J/ I
   set trade-record-current( list (timer) (random money-upper-limit))3 A) ]3 d. _3 o; y. u+ D& O
( o/ g# `" n) s
问题的提示如下:1 _& I2 c( G' o% K( f# ?5 _5 K9 T
; _8 j. p$ A' v8 C) y4 S
error while turtle 50 running OF in procedure DO-BUSINESS0 s/ Y* _' M' ~2 s
  called by procedure GO  M, W( R/ S' A: K  o, e& ]
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
* F. h, d* J4 _" y' X
(halted running of go)# V* `5 j8 O4 K
! }/ t7 J. j% Q% O5 \: P6 A# E! c: X
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~~
( r- v: a+ f7 w; X$ Z: w3 S3 T  t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  C% x8 ~9 O6 E3 Y& b
globals[
- t' z% j, Q6 d6 N4 }2 K7 L  C9 Pxmax
! c9 t- \) ]% S! b7 rymax) v% ?  g( K4 ~; f
global-reputation-list
) h( T, e6 e3 }7 w
& k) s1 f" n; t0 }& d, Z;;
每一个turtle的全局声誉都存在此LIST/ F( D9 {8 D- `- j5 [
credibility-list
$ O& p. O  }/ T; b2 ?;;
每一个turtle的评价可信度
, p0 H- K* c! w5 u$ ihonest-service
( q) P  K1 N; \, o6 M- Cunhonest-service; w7 N. a; d( f8 p  C/ {$ y
oscillation$ H! p6 v, m7 g" n6 F, E( N
rand-dynamic* N, R  ?. k" D/ {: i0 b9 E4 d
]
! `3 x- ~6 b8 u' u4 V+ I$ h3 A
turtles-own[! |+ ]- |7 l0 W5 }' X  u* A
trade-record-all
% x: T% h  B. F7 E& }- M;;a list of lists,
trade-record-one组成0 T+ f$ Q! w/ b% L: i1 H4 S! ^$ z% k
trade-record-one
  _: _% a0 n/ W2 \& 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
8 m3 F7 U6 u* m3 k/ |  L+ c& ?& i: y4 B1 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]]8 P! O* J4 k$ C9 t) U9 M5 W6 u# S
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]. R0 J' x- k0 ^
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- P- p" |+ d+ j
neighbor-total
- t) \3 x) G# V5 T: Q* C* ?;;
记录该turtle的邻居节点的数目. i6 L3 x/ o5 d% ]6 X/ m2 \2 J  e
trade-time- Z+ Y* Y% ?' z# c% \  f$ g
;;
当前发生交易的turtle的交易时间
) |/ c' x& |9 \5 U, Z- Eappraise-give
* d) @2 B5 C! b) n* `! `;;
当前发生交易时给出的评价
. x3 D% I7 I& ^  v6 Wappraise-receive& p) P/ H) l# X0 J
;;
当前发生交易时收到的评价
9 j" E* W& [" v  mappraise-time% t/ C4 |3 x: J' V  f$ s# M3 n
;;
当前发生交易时的评价时间$ Z9 ~9 M  O$ _- S6 @) }
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
$ A* Q2 ~2 P! M+ t! Ttrade-times-total4 d$ u4 \1 C5 q4 M& ^
;;
与当前turtle的交易总次数$ ^/ m1 r; R: F; G; H
trade-money-total9 S: t: i; I. h: u; d
;;
与当前turtle的交易总金额
2 O/ ?! `: B) w1 ]local-reputation: w" X  l! I3 Y# v" w& `! ^2 o( t! q
global-reputation2 ^  m+ R) M4 v  X5 ?
credibility
9 f9 ]5 p8 h1 M* l5 P# K% _' \;;
评价可信度,每次交易后都需要更新: P. g0 v4 j/ y1 U; j) |2 @$ H
credibility-all
4 y/ O0 P) |- N& F2 _1 D( H: E6 R' k;;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4 L' }: v: h/ y& G

4 u$ u! W+ ^5 C# ^  N9 B1 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0.5
/ H: k" U, a. r  N- f1 jcredibility-one
1 E% D- W% J9 i;;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people8 e5 S0 o* S2 w* F. v, w/ R, O  w9 U
global-proportion  M# f! l  F* ^; K- P. M8 k! f: u% l
customer- R7 C) w" O' [" D' {  d. T0 y
customer-no9 R! k% C5 B# B7 F5 j1 ~2 C
trust-ok$ Q" v7 F; Y: y, Y' l7 b% B- W
trade-record-one-len;;trade-record-one的长度1 n, B- w" \1 w5 D/ f
]" `7 Y$ n* }8 S
% [  f2 Z; ~9 I# W/ ~3 k& c
;;setup procedure
* l4 J* R% q+ H* L( J: j  {, m/ y$ {2 d" Y, }9 s9 y
to setup- u! P. b4 j# _, X/ y# q. g

& q- q/ M, o; C  ~- [, Qca

9 C4 [5 Y! [( g. Q, z$ f
6 L1 V  z/ `* x3 ^; ^initialize-settings
* s" B# N3 D) ~  e9 n
  S0 f6 g( V" s5 I
crt people [setup-turtles]
& x- J8 p; z9 O2 U1 n

5 d3 E+ ^8 N! Y1 u" c9 C* Hreset-timer
* ^2 r: f/ o! \3 W1 x7 e

7 ~3 G1 H6 I: d7 qpoll-class

% {& b9 B$ C8 O4 ^/ x5 F
6 ?( c- M$ v' d, @  Isetup-plots
7 L/ b8 _9 F4 C, R6 m8 `
7 q2 l+ h" u) h0 [2 y2 D
do-plots
; ?* ]% n  y$ J( F: R
end
$ q6 }7 [) ~. r. R7 _: j
7 t6 B; L5 g# o" \. E8 {to initialize-settings0 ]) }) p, F- @7 v: {" k
7 X. ~5 \6 B( u/ v# y. V
set global-reputation-list []

) P: D, Y8 Q% `6 u" b* ]) F" e6 o4 k: `6 E9 o+ j
set credibility-list n-values people [0.5]

' r: ~3 b9 }, C, A; [9 s' A& c( ?/ t, t: ]1 p3 M2 Z. [1 M
set honest-service 0
9 E, ]0 ^" b1 B0 V. a
  e" ]5 e8 M, a% R4 P
set unhonest-service 0
0 `# z4 [, F- @
2 Q+ ^8 l$ {. S* N3 c$ k/ M
set oscillation 0
; ]) h( q& }% I' }1 U+ X

1 z# N2 N8 ?, H8 x5 ~  r$ ]set rand-dynamic 0

( x# v1 I; ?/ ?) Send
0 E6 V" J3 z4 w3 w9 Q0 V" |7 y2 {2 Z  b4 D; q) k0 ?2 f: _
to setup-turtles 5 E" Y" d8 _; F
set shape "person", p. d/ ?0 k2 p& g
setxy random-xcor random-ycor5 F, T% ]' ]9 L' T1 ~
set trade-record-one []" O0 f0 B  a% h* O2 S. p
* M4 C9 C* x. k8 C$ I
set trade-record-all n-values people [(list (? + 1) 0 0)] 6 K5 e7 ^$ L: c9 y7 x" h5 c5 v, b
, U( q; q& E7 U
set trade-record-current []) ^9 j. Q) \4 b+ S+ \: {7 b) L7 @
set credibility-receive []/ Z. G' Z8 ^+ E; Y" n; j9 x
set local-reputation 0.5
# c0 o5 |6 u; w7 N0 {* T1 R8 l5 U3 Gset neighbor-total 0, b+ r; t! H: P1 h
set trade-times-total 0
. ~5 |  u3 k  E& a1 |. Tset trade-money-total 0# N0 u  j" R  d/ ~, Y, j
set customer nobody6 a1 o2 W! y1 s2 V5 O
set credibility-all n-values people [creat-credibility]& R1 I) n- ^) {8 s% t' q  J* q
set credibility n-values people [-1]( I% v7 {1 b* f7 q6 `* W
get-color
, t/ c/ u; H6 ^1 \' u
1 c) |. I) K; `& d
end) ], V# X- M% |& v$ J
* v- S% `2 ?3 F  r
to-report creat-credibility
& O) C( u; U0 |4 Sreport n-values people [0.5]$ Q2 e- E$ g  t
end
  M5 w: Y! D% Z+ s2 e, ~. J6 Q
3 z7 I4 Z& m# Z0 u: Kto setup-plots
4 ]! x' ?# x2 K$ _. F, d
4 ]4 g( c. l2 C8 d. [set xmax 30

0 J, W' R: f( V1 G- j9 b; e- y& `3 p$ n( n* t- x; s' }9 d: l: N
set ymax 1.0

) f0 |4 {( i& m! A2 _  i0 s% F6 p: r) t- j
clear-all-plots
5 [& B# p- q/ @) x4 t
/ t4 o- ?7 M9 M$ E: [6 K; W$ ]
setup-plot1
. B3 t* }& l1 S% \$ I  i- `" O
& w3 c: X- @% j0 Q% x
setup-plot2
& s# |: ?: }  \% ~
, {# n6 P4 e2 n1 f7 [) ~* l! v
setup-plot3
  y& v: v8 I/ A% V
end& G* G( W# l+ l6 K; N2 v
. I8 d7 `$ f- x5 l# p' Y+ [
;;run time procedures
3 Z* ~" b% I8 M( i6 s
: ?/ E( F/ a; b" c$ q' o) Xto go
5 Z4 g4 {) A* n) k* ?* E- e, F) f, y0 _& f, P9 m& Q* q. H
ask turtles [do-business]

) [! [, V0 o. }  ^9 `end( w: e" B7 l- L# P: W* t

* @7 T) |+ S: V6 D6 tto do-business 6 U* ]! Y  P6 u1 `
; B) q/ S0 i5 K( H$ L% G7 ^

& K* e0 r. N0 Jrt random 360
  u9 S7 E; l1 o! l; U: y. t

/ \( q8 p# S9 g. G' cfd 1
1 `- h7 H. H( s

  D: A8 G9 @; \; y% g, g; difelse(other turtles-here != nobody)[

) ]- i1 v0 `( ~5 t! G; o9 j, m9 r. b7 N& o
set customer one-of other turtles-here

4 F" n' K& c2 F  r/ j9 J8 C: |
2 V  l; b6 K4 L6 n$ c' o0 ?  ];; set [customer] of customer myself

6 y, Q' \, j$ e2 C$ y+ O
2 U  k8 u* f" a* F2 q8 {set [trade-record-one] of self item (([who] of customer) - 1)
& W% G& S- ?) \+ M3 o7 \. s; e[trade-record-all]of self
; H! j* E' O$ M; ?7 n$ b;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
4 f7 ~5 c( W: Q

& c. U( b9 ^, G  D( Nset [trade-record-one] of customer item (([who] of self) - 1)
- l4 q( v6 x7 d[trade-record-all]of customer

: ^* T/ F6 o# U) E
* l& }! [5 l) \5 b) {set [trade-record-one-len] of self length [trade-record-one] of self

' Y2 h* D' J. F! J6 X1 Y
! [6 B+ e* A! C* u" ]7 T, C. gset trade-record-current( list (timer) (random money-upper-limit))

! P2 |$ p3 _% B$ H5 j% \' |; A$ ], S0 j
ask self [do-trust]& R8 O5 g( G( Q! F9 r9 I
;;
先求ij的信任度7 s  s, o& A1 \4 o
7 C. c* u2 L9 r. `
if ([trust-ok] of self)3 K) v% E( _2 M; ?! H0 Y6 R
;;
根据ij的信任度来决定是否与j进行交易[7 I# ^5 i& Z# t- O, i( ~7 W6 N8 b' F
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
: [) F+ s) X0 r7 P
% t7 \' M% z& Z1 @$ M/ \[

1 P# o! _% L. w9 }# T, q" c/ f4 Y6 h; u* C, t/ y* i- Z% ]; r
do-trade

2 V2 C3 ^8 D8 ^, u* R) d) a( r3 }8 o$ c$ t: k" K
update-credibility-ijl
: q, B  s+ v4 h( n; Z

* T& N1 Z0 Y) ~) y6 yupdate-credibility-list
4 ?5 M0 A8 O3 z7 Y3 M

9 Q, b9 r4 D5 o0 v2 h
4 v% p. N! n- u8 gupdate-global-reputation-list

' H1 {9 @1 C) Q0 L* l" J1 M. C- d' }4 A
poll-class

& [2 ]' ]* _* s3 w0 t5 x/ U4 U" d* U
get-color
: e/ [# W4 Z1 H: P6 p- I
" B. p+ T9 q$ N: _
]]- a, D7 Q: e4 f2 C4 _

8 B4 N8 i9 r- c;;
如果所得的信任度满足条件,则进行交易
7 M) p! M% ^4 v6 t9 X% o/ e- u6 `- Z% Z  v
[
4 b8 }# w* z  o* V2 j
# ^8 Z+ C; T3 m2 J1 Q" {
rt random 360
% j3 H7 m$ F4 J$ ?6 _
) e  p& O2 w7 C3 ^
fd 1

5 q* T+ b( O6 ]) x. I% ~& @- u7 r0 F( C0 i; H$ h  y
]
4 ^7 G, G$ @) V

; w% Q2 t% k4 B" S" V# jend
! E$ [& {1 E# w
1 B4 k9 o) C# e9 C0 m
to do-trust
) T$ z& e( [& f* t! v, k2 xset trust-ok False
9 z3 L# U8 L( Q# M; f$ ~2 l: c6 v# O7 d8 [8 \9 k. |

/ i9 N5 y" A5 q! e8 p; M* Hlet max-trade-times 0; K4 T7 I8 e1 J+ Q) q, o
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 z) Z" C7 z2 Tlet max-trade-money 0
. P1 K; y  c  }3 v9 nforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]# P( C7 `: a4 M. p5 O" `3 O
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)); Z& v& v( ~7 O
$ O9 \/ V, }' m

9 v& k* k% R# f. C- m+ h4 a# tget-global-proportion
$ S# o" ?2 ~% E- Xlet trust-value; a7 ~0 [' d( J$ y
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

# I1 W9 _. h  eif(trust-value > trade-trust-value)
, V$ j& o- d# _* s' V6 ?[set trust-ok true]. b" S+ k' u6 K* m& e: |
end/ t8 a; Y. J8 ^* n
# T+ t% g0 ?7 p+ _( q: C
to get-global-proportion
2 Y: x5 [& |4 m( E) u, ^3 aifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
  m- F: n2 X+ d4 q7 a[set global-proportion 0]( A. h$ E3 {4 d' t
[let i 0) p( S# [4 t/ T' U. _% {
let sum-money 0
& g6 w; O! h% w# h) Mwhile[ i < people]* P# _+ N* C8 F# a2 `2 m  U
[
% A: i5 B1 P/ m' X. Vif( length (item i( |/ E2 c. R, [- y9 N0 G
[trade-record-all] of customer) > 3 )

( \# U$ r1 e& t. L# ^3 I9 y* R: x[5 G( j4 o* O, E* Z& v
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
7 P: Y# N2 x+ s]+ I* ~; u! ^4 ^2 d6 \
]$ F6 C9 g- A! V) v; k1 z' j
let j 0* i5 ]5 R7 i& W! W& @
let note 0
8 _* i* m+ z7 s- }& K8 Ewhile[ j < people]6 P$ v- e# Z- F- A  d! P, ^
[
8 O, |7 x, e( Q, `9 {6 rif( length (item i
, T+ P7 v  A- B( S3 u5 ^[trade-record-all] of customer) > 3 )
# U$ e( |8 {8 k/ ^' H! I
[- X5 I, v. j2 z
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 H4 ~/ @8 R* H! I" Y1 u
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
- L( |2 S! j/ m$ ~0 v, A[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
1 j% F, ~# E( K3 R% h]
6 c  r& x0 b6 |$ H- J]: O) s' t1 U+ |( D% u
set global-proportion note
. H/ I3 a$ }  t: l5 {]: b- U% ], p* [
end1 b( ^7 U5 d( U  P

7 b1 P- z( U. S% \% xto do-trade
- Y- r+ W- M+ j5 {9 _;;
这个过程实际上是给双方作出评价的过程: Y/ v. c6 U' }9 L( {
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价" w9 o3 M$ v5 Q, V
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
% x6 }" {( \* r$ ~/ [set trade-record-current lput(timer) trade-record-current) Q  }  ?. |. ]8 ?  ?0 {
;;
评价时间* k& ?/ C8 H7 Q1 y$ a; S/ D
ask myself [+ ?, [- K/ }# ]( \# s& T
update-local-reputation/ o0 o( P* T' n) \9 a
set trade-record-current lput([local-reputation] of myself) trade-record-current& q8 B! m2 h- L
]. O% `5 B' {5 Z) m9 b
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 u, d6 q; E( u7 @! c  U' E, s9 ]
;;
将此次交易的记录加入到trade-record-one
/ \2 S1 M5 y9 L. J. q9 L5 i$ ~9 g8 ]set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)  ]8 c9 t& ?' [3 x, x, m* r
let note (item 2 trade-record-current )( W8 R- g. ~4 l! [, A4 Q; w, V
set trade-record-current6 |. n) `) p' ^7 M
(replace-item 2 trade-record-current (item 3 trade-record-current))

) J/ J% _8 _8 n" m- S1 T% |; x2 Dset trade-record-current
# j: C" D3 P7 k3 H; W2 |(replace-item 3 trade-record-current note)
; F5 r0 \6 u: e! T6 l7 A; t% V* j( k' R, q* k9 s- O& l$ U5 p3 ^5 a6 Z
, T5 r4 @$ l; V$ L
ask customer [- s. @, i, l5 q6 D( o% I; S! {
update-local-reputation
& j2 R: Y$ {4 R8 X" d' v* Nset trade-record-current! [% h* b- c  h7 e- ~6 p
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- D$ b/ W- N; d$ s
]
7 y7 y9 _) F2 O: F9 K6 S
) {* n, `1 Z& {1 y4 P

' Y  N0 o, `: xset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer# ~! z5 i2 ]0 e: L2 `4 M* ^

6 ]# U8 N( i( C/ ?6 x; g# Tset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)): ]1 _4 k: H3 S
;;
将此次交易的记录加入到customertrade-record-all1 ?% r* }- t# `3 ?
end
( x, V4 M& D% _4 _' ^) w8 h" z* j* J4 w. d
to update-local-reputation, R* L9 h+ _! j7 K8 u- K! C
set [trade-record-one-len] of myself length [trade-record-one] of myself- {& h, x, I% D. b! g) e; M5 v; h

% H9 {, S; s9 J% t% y. I2 ?
. T' B+ E* M9 h;;if [trade-record-one-len] of myself > 3
8 p2 i- p1 f" \% v" C: o
update-neighbor-total
2 K9 D2 ?0 M/ E& N; E! i;;
更新邻居节点的数目,在此进行) C! w, S6 R- ^8 M" \
let i 3: z, s: L# C' N6 C& m2 U( o: u
let sum-time 0* D+ S- K1 z8 T- L8 K5 G: B" `
while[i < [trade-record-one-len] of myself]
! c. D- P0 q) o$ u: a[
" |- i6 c1 r4 {# a9 Kset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! e, I3 V5 r5 O5 H# r9 \4 ~
set i
( \1 ?8 c+ x& z: W# t" H( i + 1)

, O( |8 f7 y+ {, W0 @+ m]
& T/ i& S$ Q  x6 z2 klet j 3# s3 V4 }0 W5 {+ G1 F1 ^% J" O
let sum-money 0
% T0 e( n( s$ `# g1 @% ~" c0 Lwhile[j < [trade-record-one-len] of myself]
" C! U' j# J+ i[0 G9 E# `& [% z, b
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)- K3 i% E) a& x# {
set j# E/ R! {. d" w" h1 d; {+ x
( j + 1)
- B) R6 y; |9 c( D0 h# B
]
5 D! T) Y- \4 O8 Wlet k 30 N3 |5 X( c: K4 c6 S
let power 0% `( [" a; |' c0 F
let local 0' I3 N- w. o0 @' V, `- ?0 ~
while [k <[trade-record-one-len] of myself]9 g2 x+ V) t% }" d" i$ d1 W$ U* F
[7 L- U2 E& k' j5 R2 @% L' U
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)
  S0 q9 B3 ?7 ~+ c% F* X" Lset k (k + 1)" X" ~; i, T4 c, J
]& M& `% F& f. P. s! h+ e! L
set [local-reputation] of myself (local): k0 Y8 y  P: n5 g7 b. y
end
  x# X9 e# E  a5 D( q" ~8 T& Z- Y& ?& C/ ]6 F3 d3 F
to update-neighbor-total
& j4 h( k, R0 J  G3 }, Z* R0 v5 F( m
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
6 l; }' P% D1 G  E1 q5 R2 j
- j/ [6 j7 ~" c4 ]( s
* ^% i- F4 @  D
end
, q0 B: W" m4 p. I, t- r! c% b. M. D; N6 B0 ^/ `8 J. ]% E
to update-credibility-ijl
1 N- S# Q5 D4 [$ m0 S3 J
. c9 e/ E' _( f* I8 a8 _& @6 v  E;;
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。
0 U0 e& }3 N( x2 J, b, alet l 0# Y; f1 J* K$ b' [
while[ l < people ]5 ?4 x) c' \! W
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价2 _" q/ A- L7 l% O, a$ b
[& r. i8 c" B# _$ r6 T
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
6 w& y6 z8 j; V7 Kif (trade-record-one-j-l-len > 3)# _/ u9 y$ Z3 N7 O4 c* e- 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; A# t$ B. i7 c. _# a
let i 31 e7 m, @' M( y  r& ?; v/ g2 Z0 q
let sum-time 0
6 E# U# H+ X6 [& a+ `while[i < trade-record-one-len]1 ~/ U  ~* D( L9 f; X! J
[
( v$ ]* s% C, F$ mset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
( g7 p  Q6 f* Z: Yset i; S4 D0 f0 R8 X8 ?
( i + 1)
, G' R7 g* x# ?& ~( S1 d. e
]# E4 U0 e+ l9 ^& ^1 D- u& O
let credibility-i-j-l 0
- k& U8 M; |2 E' j" @+ b;;i
评价(jjl的评价)
$ a9 f# ]0 R: q" O3 Mlet j 3
8 M) f: r* Y8 _# i% Blet k 45 y: p5 Q8 G7 ~2 a3 P5 \+ d. D7 Y
while[j < trade-record-one-len]
( b8 l- V: l; Z/ U( T* C& x. a3 j[
7 D! H  p$ c- ~! f, t- Iwhile [((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
, H1 ~; B9 n; |9 Q0 Y2 T. I0 @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)6 F% X5 D9 s1 E* C1 `) w
set j. {& \% A$ z! P8 k$ `; Q/ t, ^3 w
( j + 1)

. U$ }2 D6 O, D8 i9 q. i]
  A# f! I8 a5 }+ a& xset [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 ))8 S1 ~- B: s$ J7 D0 C2 ^

3 f, j& F" E8 i

8 [/ s1 D/ ~6 B6 z4 ulet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))) z5 e' m# w3 Y& v
;;
及时更新il的评价质量的评价  ]1 I: w  y$ w$ N+ }1 y/ Q
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
2 z/ J# Z" a  A7 Q& S9 H/ d$ J6 rset l (l + 1): ~% `+ m1 u9 }* r0 Y$ K5 m* d0 }
]( j% T2 J6 e1 I. B9 R1 \
end. e* W& M5 D8 [  p5 L7 Y

4 s6 G( ]4 U% I: G" d) \to update-credibility-list
7 A7 ]" i- c8 x- U2 m7 qlet i 0/ e! c3 e! S+ O0 S5 s4 }( ^
while[i < people]" C0 m; Q7 V: T5 C! P
[
, E7 P% w4 ^9 ~  W: nlet j 0& ^% |+ J2 g+ G8 Y( p) J5 F
let note 04 \' U) t* r" ~+ u; q
let k 0; v! M! j$ L% ^- ?# z
;;
计作出过评价的邻居节点的数目
5 O3 L$ o" M) {! s" x0 Z9 Y; Twhile[j < people]
* [$ e) [$ }) G; Z# V# i6 I[- N! d( t: o+ d3 W3 g" N, k
if (item j( [credibility] of turtle (i + 1)) != -1)
3 a. B" t: f+ U9 }9 v;;
判断是否给本turtle的评价质量做出过评价的节点
, q/ q6 [6 k- W% k; J[set note (note + item j ([credibility]of turtle (i + 1)))
- r/ _" R* U+ ~3 }5 |  M  Z& S+ D;;*(exp (-(people - 2)))/(people - 2))]

! F6 s8 J- Y* f7 d. E$ V+ ?set k (k + 1)
, b* Z& p5 u4 D3 e]+ o& x# M! `: B; c4 z5 m5 V' \& d
set j (j + 1)
6 P8 g, I, O1 z# ?+ b0 a]6 s; a+ m1 _; f/ l
set note (note *(exp (- (1 / k)))/ k)
6 X! C& }. h+ t1 x$ t# Z  z* L3 `) aset credibility-list (replace-item i credibility-list note)/ H/ e& y5 |6 b. Z5 T: w' `2 R
set i (i + 1)
% X' f; U3 y8 e8 q% i3 I]
) }( i% U) {8 o; Vend
! Z3 u3 q+ X. k) ]$ O8 r- t4 P# k
to update-global-reputation-list
; I& b% Z' F) _& o. z! {0 ~' ilet j 0
7 v2 p4 R" }9 L- Z7 L5 jwhile[j < people]$ T8 ]( C2 |3 `; z0 L. {' A
[) Q0 N$ @. o& P/ U% K
let new 0
" n7 R/ A1 d7 K* D;;
暂存新的一个全局声誉$ V4 e: j( m  J  y8 _% P+ U
let i 0
/ c7 N7 g! o5 m3 Olet sum-money 0
# y9 T/ p! @6 y/ C2 }) olet credibility-money 0- J4 U' l9 H1 G) u7 ~" X
while [i < people]
& L' J' Z* q+ x2 k[
3 M7 d" c/ U  oset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))4 Y8 ^: w5 O/ Q
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% C5 B- v, b) |6 r, J  zset i (i + 1)6 c( s! N5 q# \2 F
]7 ?6 n4 J$ a( }& Q4 q
let k 0
# t5 A' g8 g* L+ I) a  R( k9 L9 alet new1 0
- t2 B- I( `1 Y9 N1 w0 ]( c* iwhile [k < people]
0 o  D3 L1 j) T* N* ~; k[
5 [. L: i0 s9 f4 B! |) U# yset 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)/ c! g7 Q8 X( N# U/ E, h, [
set k (k + 1)+ W+ [" y  x5 q" S" ~- s* v6 Q! i
]
! K3 G  [/ @. wset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
- |) x) j5 J1 s- p$ F( _- ?set global-reputation-list (replace-item j global-reputation-list new)
' |/ X8 N; D! C, c2 |set j (j + 1)) D5 z6 n& I, L: C1 K
]
- {/ {6 W' X2 A& |, nend! d0 K! u! Q3 v, g1 q" q. O$ N

4 c. b: X8 l/ h! N! |. g  P) d* ^# d7 Y' ]

/ e' G: R: L( |* cto get-color1 Q; O- F$ o5 u. `, \
8 _' P: j) L" T' y. E# @( l
set color blue
9 k; E, ~% O' F- R! ?
end
' O- g7 r5 d) `5 \& Y& \" B2 C+ D
( H& x0 [5 D" ]! k" ~8 Jto poll-class- c$ W8 u6 B* p& U6 f5 G9 T
end
) q! P) G7 H1 x4 }$ E
0 _+ @7 Z) D7 b* ^" @  P; Z  Gto setup-plot1( q+ @8 P4 n) i$ f' H) D; N6 N* |7 d
5 O; n8 H, u2 i9 k' ]
set-current-plot "Trends-of-Local-reputation"
0 _0 z7 }( y. ]- n
& c  F/ O! Y; s' n; S
set-plot-x-range 0 xmax
7 G6 K5 {" O4 q0 D8 M& G

% W- \3 m8 R# f5 y- [8 B$ ^set-plot-y-range 0.0 ymax

; D- u: l) Y) W5 Wend
7 r; W5 |# O8 M9 d" \: q6 w
* S9 o9 Z9 s1 i! Z0 c9 Uto setup-plot2
" N$ ^/ C5 ?9 o! m. v: L  N" d; K; h1 I2 U6 D) S
set-current-plot "Trends-of-global-reputation"
/ u# ^# J# K) _6 J
3 `: s5 R7 n/ E/ k1 F6 C9 |
set-plot-x-range 0 xmax

; K, X/ r% _2 a) @# l( K4 k
" k" R& x7 |  w$ Y$ W1 Hset-plot-y-range 0.0 ymax
+ I& W+ ]% h: z+ U
end
8 F# z! H. E2 w# P
6 p6 Q& @8 s9 i& ito setup-plot3
$ E$ G' Q- L2 p' M. a# l  @( }  B! f0 e: k1 I3 E+ g
set-current-plot "Trends-of-credibility"
2 A. E9 W8 a- V' {

$ U' ?9 w+ ^! l. C5 S& }: Uset-plot-x-range 0 xmax

$ `+ C1 R+ ^9 \3 U& n
( @. M: Z0 L1 m8 T1 Rset-plot-y-range 0.0 ymax

+ }- a5 f0 r) @% N# f7 Yend: d& a* N  N( I5 f' E( y' @

" d6 f6 O7 R7 V2 S1 ^to do-plots
- p8 j  k5 @: q8 L6 s+ P# iset-current-plot "Trends-of-Local-reputation"
$ N2 ^9 j( L: H8 bset-current-plot-pen "Honest service"
0 ?% ^9 Y# }) M5 r5 H% Z5 Y0 x2 lend0 d2 }' e5 w( g& E& w+ p
) W( ^. J& {! G8 \7 B. o6 R
[ 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.
  K  {: B3 n; ~1 E9 t% j. B. _' H% e, |; j- }: g
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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