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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:
% T. b+ k0 w  Q* k. U$ ~$ mto do-business
+ l" q" B9 o$ D rt random 360# v+ C% p2 g: w; c0 ^2 M5 W
fd 1; N" z4 A0 Q  i* N  x$ V/ w
ifelse(other turtles-here != nobody)[& Q& ^* b& e* b6 X  j0 _7 l5 W1 X5 P$ f
   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.4 M* V% |" {+ ?1 [# S  f: f0 }6 P
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    / p9 a% g5 @+ m# r( ]: H8 b% K
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
0 }) n* q( ~: ^& f   set [trade-record-one-len] of self length [trade-record-one] of self
/ x. }, W3 G' ^' p+ z) ?; \   set trade-record-current( list (timer) (random money-upper-limit))
* D2 o; v; Z9 G2 w2 k
- B; V0 k2 Q! D/ Q& s: a$ u问题的提示如下:- A- Q# c' n6 Z) `" M: m; x
- V# s" t' j! |  ]/ A
error while turtle 50 running OF in procedure DO-BUSINESS* }' ~& i# t& J5 d% j: Q; c3 y
  called by procedure GO9 R, o' [7 ?/ L- A' v& I; Y( A
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
5 _7 t" V& u$ T6 M: e$ W* b
(halted running of go)( }  ], M+ z( y7 U, [) z
- t" t/ @1 J5 l: O
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~~+ o% T+ z6 Z3 v  ^- I
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, @: x7 e( q/ ^$ {* F  S% B+ l
globals[
8 L. |9 h+ o% j9 Nxmax: V( y+ p2 t1 i6 i( ^8 {% ~
ymax
+ g7 |: E, |- m4 d+ fglobal-reputation-list
, |2 _& b4 |" q" k# a' `( ]3 T' z6 f+ }, k  G
;;
每一个turtle的全局声誉都存在此LIST  i9 x0 \) A: U/ R7 a0 v
credibility-list
. Y! S! ~+ I+ Z" j: D6 W;;
每一个turtle的评价可信度$ ~' {- ?# `& A! J7 N9 V. }' @
honest-service
4 v- ?+ c. S- Q% V* j/ Z% Gunhonest-service3 _0 B5 [% I  I4 Z
oscillation- g+ V" _+ ?) N& d. T
rand-dynamic
. s2 ^9 h# A/ X2 W; ~; y2 E]. @$ M; b# O, ?( v, w) I

* Q# \) w; C3 {3 }! D5 kturtles-own[! |: F0 b; u" Z
trade-record-all! q/ |" p+ b9 @& s+ |! z0 d' R
;;a list of lists,
trade-record-one组成) ]2 \. h" H0 o4 K/ c/ O  W1 m, C
trade-record-one1 ~  l% A7 H8 C5 @6 F
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录. [9 l  l$ j$ O9 X
5 Y) F( K# T" q$ @
;;[
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 w/ u" ~! t) g5 ?4 v8 N+ a
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]" V% E4 h: s3 Y; {. P+ D
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- x; c0 n: c( L, x
neighbor-total/ F6 u& V4 Z8 w  ~/ Q) t8 V
;;
记录该turtle的邻居节点的数目/ j) S7 W" w1 R/ {6 d( n
trade-time
) R7 o2 }* g9 ^0 s;;
当前发生交易的turtle的交易时间
: k- ~( g$ c/ R0 m& fappraise-give. O9 H. J* a! A2 w
;;
当前发生交易时给出的评价
/ @/ k9 X. V8 N0 O- aappraise-receive
/ Q: ?% ~8 S1 d* {5 Z8 S;;
当前发生交易时收到的评价
5 J" @% T4 f* _7 {appraise-time
# _: [3 i. D3 N, l% V4 F6 q;;
当前发生交易时的评价时间# G' L" l2 u3 X; c2 `4 {. `
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
" d" ]8 Z2 k6 |+ D) f  Ltrade-times-total
# D+ h7 k* |- A9 Z2 C" u;;
与当前turtle的交易总次数
& L. l5 f9 e% I* i/ vtrade-money-total
- M3 ~3 e7 P1 ]! p& \;;
与当前turtle的交易总金额
2 _7 \& Q* z; |  @3 @, l3 Zlocal-reputation
: L# L& ?6 u" D9 s5 bglobal-reputation
. k( e/ Q) {9 q4 n; K4 k5 w7 J) Acredibility
9 m! f* A( x' ?, H  w# e1 S  J;;
评价可信度,每次交易后都需要更新
! m6 u/ e" L; w: h4 d/ Tcredibility-all! {, U. x; ]1 M/ X7 x
;;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3 O; c# c' U% r: a6 u/ h" E' j, W

& D1 z6 W1 \6 _3 D9 _;;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
6 E1 Q# s( h6 Ocredibility-one
! y$ v/ d# Q$ F9 B+ r# w;;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. j7 z5 a, n1 X; F+ w! T/ t& J& j
global-proportion' O+ X- h7 r# I1 X; H* y: t
customer
9 P3 U% e$ \: A& I* gcustomer-no
( u: W& e" i4 Y- O6 w% Ztrust-ok
; [# p# T5 |- C) {trade-record-one-len;;trade-record-one的长度; j. m/ |$ M+ I6 z" o/ K
]# E* t$ _7 C" Q/ r8 A+ N' k
/ a3 k- q" n0 Z" y- ?& l5 B
;;setup procedure) p( @+ x: b0 B* h' j, U- K' l' f

" d3 D1 Q0 e1 o, Y( l% u, P2 wto setup" b" W5 T' F8 `; H2 Y7 N, `
5 _/ @* \$ k5 x7 p/ ~: `0 P$ P
ca

7 S3 }9 }/ |- y' G( u3 E8 b9 q0 ~5 T
initialize-settings
+ v( q3 k7 q5 J8 c8 w
! @4 Q( l. \: e
crt people [setup-turtles]

; `4 h8 D$ X8 U4 n5 k7 U
0 _+ p3 C" g* C8 U: f- S  treset-timer
7 H; l1 H$ M* I- k

  ^4 K, z) ?9 q8 M: y1 G, upoll-class
/ j8 W3 b3 z1 x3 w

1 @- G. [; V2 A! q, p0 E2 [setup-plots
% S0 `  M3 R+ {! V  d& J, c( V
- M5 v/ x) W& P# A0 p' V* F, Y
do-plots

( d5 v4 G* e. _/ {end
- w5 \+ z" N9 q5 K
1 P) O3 R$ E" L/ T% Yto initialize-settings5 j4 ^2 `7 D2 q
8 T+ X+ `* }. V% T! [7 D6 j" v& L3 L
set global-reputation-list []

; o3 {8 R4 [  p( x8 j9 @
* V. e$ ?/ Q+ O# `6 vset credibility-list n-values people [0.5]

$ S3 }* {+ V  m" |. B4 c" ]* }& {; D
' W: e% b4 o3 Dset honest-service 0
3 _8 n, x- h4 ^+ i" ]& x: K% H
8 u5 g  S/ l+ }" S( _2 H/ f
set unhonest-service 0
0 e& ?1 E+ _- @$ X
. v1 u2 r* @* h2 L  r7 U
set oscillation 0

$ h0 H- Y3 f( @  r( p& K) {7 y6 z' ^/ V( ~- C  X
set rand-dynamic 0
+ M$ Q# B7 `& O8 M; ^
end9 r6 s$ W; c- V1 E: B+ t/ u
$ U% U3 Z- s  j9 ~+ {0 g$ M9 q# N
to setup-turtles ( z) A3 M+ @- m' @1 s
set shape "person"
0 _# C4 W1 ?# x% z& Y% Y+ Gsetxy random-xcor random-ycor# E" C0 t/ b! r/ A- z( {6 l' }
set trade-record-one []: {8 y) H4 n0 I6 P/ y  G& m9 K5 a& E

1 M, J) w6 L* ^, F) Hset trade-record-all n-values people [(list (? + 1) 0 0)]
+ `5 v% S& N7 J- R" e7 Y

+ t$ t  g/ a7 V/ J# pset trade-record-current []
2 F4 W8 ]0 h2 y/ Vset credibility-receive []0 f6 E+ x0 ^& [- p5 r* D# K# b' m+ R
set local-reputation 0.5
; I( n& e: B) C4 Yset neighbor-total 0) N* t( F: G/ `8 l4 Y
set trade-times-total 05 w. g9 j3 T1 _# l
set trade-money-total 0) ]0 x) P$ q1 C% Y! w
set customer nobody* ]* ^! T) S0 j7 H
set credibility-all n-values people [creat-credibility]/ Y. c* g5 Y# Q* u/ \8 T- M
set credibility n-values people [-1]
6 M7 m9 ]; _9 r4 S  xget-color
& i7 o& ]% m: `( B

4 X+ }; M; Q+ v2 @; a$ A: D) ~end$ [4 w2 k' m+ a* U/ C* w# ~

5 M2 m9 X+ u# _1 _( @/ n: Fto-report creat-credibility# e; V. g! V) J& t6 R* f
report n-values people [0.5]
5 h! `6 c7 R/ v* R' z& Gend; O' ~0 L. `1 a8 L+ e' o" ~! L: @

1 ^. y+ ]: Q' `to setup-plots
9 @( ?$ }, ^2 \2 Q0 A4 k
; b9 V+ P/ d6 ]" Xset xmax 30
$ z) f2 g3 F" [# q
: f) C' }, y/ K
set ymax 1.0

2 m4 d+ O6 @4 i" @7 w4 `% N; H
$ k: ?: c2 D1 B. rclear-all-plots

8 S( p3 _) E6 D7 k- k5 I( [, M
  Z7 z) s3 E: l& Wsetup-plot1
6 r! j+ k5 z# E% b
/ w# O" N, u# h
setup-plot2
; c! b- @6 m8 [9 [4 w" a4 z
* g) ]8 e# a2 q
setup-plot3

$ B  N8 m5 Q( S  @+ P7 ~4 y2 p' Kend$ S% {" R- @$ @; s& k" n* J
( K; D7 s% O! _3 q! h. W
;;run time procedures+ k6 _! o- H' C. h  X+ r0 |9 Y8 z$ Y$ {
& b% C( {+ k1 R2 v" o
to go
$ U# T2 k/ q" S5 H" [7 q! f8 O3 G$ ]6 L2 r! v! u( r
ask turtles [do-business]

$ `" f  C& |* Y% C9 N3 `. aend
* ]" E7 a0 Q2 b! ~2 `) w% p8 W+ I9 u, g  E9 l: f& S, i% ~
to do-business
6 M: \1 F# x7 r' W; C7 W

- X, s/ `, A1 M4 [9 G6 `+ c/ _5 g9 V) K1 @, ^# ?6 d2 t
rt random 360
$ K' L3 p7 _% M" O" H

! k) Q# i+ E, `) c0 g$ m1 e! Ffd 1

! v9 ~$ U5 L' b0 m) C2 C9 H0 h: a1 i
ifelse(other turtles-here != nobody)[

: A: r! T3 a+ ]. k1 f  g2 Y6 G+ p
. {6 q0 p7 U/ u+ C2 B* u& fset customer one-of other turtles-here

2 J1 k1 P1 e( P4 G7 H
1 b  }, B$ ^  N8 ]+ Y2 g3 p;; set [customer] of customer myself

/ _" e; T& f0 ~3 C7 ?5 S  m* F4 d. R9 X
set [trade-record-one] of self item (([who] of customer) - 1)
2 @0 |. j! g: a. g, G0 _[trade-record-all]of self
2 V. l1 Q7 b' t/ x* x7 Y7 ?  p;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

& d0 Z1 v8 {9 H/ b) C, i. R3 g6 U
* [1 |; h0 t5 H2 y5 L  oset [trade-record-one] of customer item (([who] of self) - 1)9 L! t3 X" K) r2 U
[trade-record-all]of customer
  @( i) }4 Q  _: @  H4 b3 ?& l

# v6 k; a7 q  H+ [! iset [trade-record-one-len] of self length [trade-record-one] of self

" D5 c8 U. U  f: p* Q
0 l$ D) v* X2 O5 U9 ]- D7 [set trade-record-current( list (timer) (random money-upper-limit))
+ f+ l# T5 u0 i: Z; u. P
% j& x# O" C( g* V; |. ~  s- D
ask self [do-trust]% r& z9 _* ^# W% X
;;
先求ij的信任度7 s  i7 \( A6 U/ N0 `4 r% j
; h' _+ b( A% O. w( A& z2 E
if ([trust-ok] of self)
' |/ F: {% {% Y2 \: _6 b4 |0 N# A;;
根据ij的信任度来决定是否与j进行交易[
; V2 O! O- f0 w+ k- T% xask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
$ n; ^' @% W" W2 n) G5 m) Q2 K4 n4 G2 ]% q8 \
[

2 R5 k: ^" d& Y# s% u6 _
0 w( A, s! W8 q$ y8 I  b( mdo-trade

$ U+ v: j# {$ K  T+ S: O5 g
: c# z; \; X2 n/ O, k0 u9 \update-credibility-ijl
5 g; z- ?- L$ f$ Z

8 O: v; e; Q5 n; O: O: Pupdate-credibility-list" W- \$ B, @6 E  D
( J1 _% r# e7 |" R6 a2 ]
5 t8 Y- \- F1 O) E4 Y5 h
update-global-reputation-list

) ]3 V3 B( R& j4 P3 x0 K- X$ C" i* w& n
poll-class

  J. p5 X8 g' O: |" r) K5 J  M
( d0 [% A$ M' v1 Sget-color

$ u- v: q4 x  q7 q6 i  v, Y
6 N. G- B4 u( F' Z6 S" l6 t% Q]]
2 H. `% E. a- w- g/ z1 n2 u8 J
( a( Z" n$ N5 |, C( J* t) k;;
如果所得的信任度满足条件,则进行交易
% x3 N6 w7 g* r2 G0 d# V
$ _+ v* F; Y; w/ @[
% y% p8 x( H0 u4 Y& M% n
6 y. }, ?+ }9 ], m/ e$ m
rt random 360
% s. P& s: U( z/ G, {% U$ l

5 ?; G! a4 s% L, G) [fd 1

3 U- v; e0 @# G9 y7 y; a$ I( T1 r8 Q; A
]
3 ^8 Z. j% u, s4 s; J% u" j
8 X% o- `8 Q( y" M) T
end
$ a) M1 D- U5 f* [8 h
% H" l! c- v' q2 P( q0 i/ _
to do-trust 0 r- l. p6 V* S6 [, P9 E; j
set trust-ok False
! z! E- r0 \5 V6 F7 G
! Y+ }; L2 B! [9 v7 b

8 e1 L9 @4 z1 q; P$ p% i+ q$ Nlet max-trade-times 0
/ e# ^" s  [: Rforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
0 X8 [! r: I' c9 W* h6 @let max-trade-money 0# h2 _0 R  j0 T) ^5 Y$ n6 O) J
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
/ ^* p+ V% q$ M) Tlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)). L0 e* y/ T) `; I( R4 O

1 w+ `# d# w% u! o; G$ f

$ b8 g' ]' R; V) L4 e- {- oget-global-proportion
& r1 O# y! }" G* f) dlet trust-value
) h4 @6 L4 ~: |7 k. d, k# @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)
- [( }, G- F+ l* @
if(trust-value > trade-trust-value)  w3 p. e% A# y) r/ Q+ T  `- w- ^
[set trust-ok true]. P2 z# i6 E$ t) q
end* u7 l3 P( J% N
3 u/ k* t& @/ X) h
to get-global-proportion( v* c6 X: F0 [0 l- _' a
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)5 ]' |: n2 U8 H$ P$ J+ y6 F
[set global-proportion 0]4 T' D* u; j, W9 O. v3 }( ~; {7 z
[let i 0) ^' d: z; k: Y! w' l8 f0 T- k
let sum-money 0
1 G, a6 X- u4 C/ Hwhile[ i < people]
8 U, U% E& W4 |[
! b' ]* u% v  i& @0 W# rif( length (item i
! l2 W( _; S) k" c- t[trade-record-all] of customer) > 3 )

+ P; m; a2 l6 L4 ~0 ?  U[" d% _7 [4 A- s/ r" v) |5 p
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
) y) X- R( w1 E7 l- T- Z]
$ ^+ o5 z, b- o$ ]. P]
9 g1 f% B' I3 M8 Z$ K1 tlet j 09 k. I- Y" I( b' y( A
let note 0- `3 L8 S/ a! z- |8 Z
while[ j < people], {) J( n5 G% _- Y( C
[' M! @' [+ b4 y: {. z
if( length (item i
4 J! Z$ Y0 N+ _# f" g7 V[trade-record-all] of customer) > 3 )

5 @4 ^( g' K( m6 z[
, H  U, T6 d" ^2 |% d4 Cifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
2 K+ L" I5 p. y) i8 s[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
! v- [* b" ?1 E5 j* }5 N[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]8 ]  L( D* H4 R& {( C5 r2 q" \. t
]; Y/ ?( P$ l- Q4 a
]; z, A7 u2 [' _1 Q8 z
set global-proportion note
; `9 B3 D9 ?' b- ^]2 t' m+ L- m: t3 p9 l7 h, O8 R0 w5 [
end) d* [0 {6 \) P7 Z% d# g
6 P7 m5 W- A' a) K1 V/ A0 d
to do-trade
: e% j# _3 D# Q3 H6 @;;
这个过程实际上是给双方作出评价的过程- o5 [+ T7 @0 z9 `  ]+ Y7 o
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价3 B! M5 o! A' b2 i% D. W& u
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价6 E* P8 X  \( D$ O" W+ S1 Z1 k7 L
set trade-record-current lput(timer) trade-record-current
5 n; N/ ?+ R( p1 e' e;;
评价时间
: Q* m0 p" y; F) {" L! q% N0 \! Dask myself [
; [6 I5 l0 E9 Bupdate-local-reputation2 {5 Y1 N) q7 g1 H* f
set trade-record-current lput([local-reputation] of myself) trade-record-current
* `) l3 L, h: r]
* }1 @7 f- T8 f* Fset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself- m2 J0 f# z- _
;;
将此次交易的记录加入到trade-record-one8 x& g" }" y2 K, V" m* T
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
* P+ X" K! `- ?% I9 c' z; h" zlet note (item 2 trade-record-current )
0 ]4 t6 y3 r# U. x/ Z2 L% ~set trade-record-current
& ]7 u* S0 Q; X2 P0 [. D(replace-item 2 trade-record-current (item 3 trade-record-current))

/ C& \& G6 {5 E  b" C1 i" S& ~set trade-record-current
* c: _* |" X# f* M+ h(replace-item 3 trade-record-current note)
# D! F6 Y8 M! E+ [2 A/ Y  w( [; {
1 g, F, ?! W1 e" s+ Y6 x9 t5 e
' `8 e8 ?7 |: ^( {! l  v
ask customer [) N4 A+ B0 g7 q4 Q# @) ~- Q: U: u
update-local-reputation
5 p7 B1 t1 t8 [/ K( d5 A7 U: \set trade-record-current- n" O( w" K) d0 T+ N
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

( H1 y, B5 j; i. A" W( w]  f" d, n6 e* X+ c# U6 v; a! B  {

" V' u- y/ t. Y" v, P2 h. b, n5 }
  ~; J0 ~1 A7 U" F& P
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! p1 P. w/ R% i& m- U8 J2 z
* [/ j$ C$ d' E# o% M$ P( W3 I
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))8 s+ D. l; ^7 u9 j( C3 a* G) {- P1 E
;;
将此次交易的记录加入到customertrade-record-all9 V4 O: U2 |/ \
end) L) V# O4 U8 a; }+ o7 @% _
/ k: u6 n7 B0 k; }# H: h2 p
to update-local-reputation& O2 e' n; l4 F; \
set [trade-record-one-len] of myself length [trade-record-one] of myself/ _% Y% W/ L5 H0 d4 @

9 b& r5 L, w  Y+ ^
5 h% v$ E/ ~- u+ h! x- _  f3 c;;if [trade-record-one-len] of myself > 3
  {- B2 \. b8 ~8 L5 E/ _9 G
update-neighbor-total
6 c$ u! }1 U) e;;
更新邻居节点的数目,在此进行- G& |& J. o! E9 y$ X9 w1 b7 D
let i 3
4 Z) i: x9 T# D' c5 W0 o1 F5 ^3 W+ f- j6 ?let sum-time 0" @+ ]8 F% E% q7 i
while[i < [trade-record-one-len] of myself]
6 [* q1 J, U% O[4 r" S; d' S& N
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
' |/ Q7 L3 W( i' q6 j# t) _' q, Qset i" a* a, z7 O7 r3 Z8 ~
( i + 1)
" W0 u& h9 ]5 {/ c7 a$ x
]
3 D7 p# W0 @! T! N; o' Tlet j 3
0 O9 i; o% ^2 y. E# n) Slet sum-money 08 z1 y9 |7 z6 R
while[j < [trade-record-one-len] of myself]/ b+ B8 \: S$ P6 \" x
[4 J) P# l! j# e+ 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)
- Z. A0 q7 ]/ o7 X$ nset j
4 i5 g; N9 |) u# |( j + 1)
& Y3 i. M) S. j7 G: ^" A
]" I0 d. x/ V+ [. d* [- T
let k 3/ e6 [7 M6 t" }+ c. F
let power 0; f, n" l+ L  i: `- Z8 w
let local 0
5 Q  F/ ~7 B- \$ B- rwhile [k <[trade-record-one-len] of myself]
1 V/ ]3 U. L/ }) r* ], X+ K[
% z# o/ `1 q4 t8 e5 xset 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) : g% W; B& [( F" p: w3 _$ Q. |8 \
set k (k + 1)+ K6 ^& w3 G4 a6 B, U8 b
]! }  o& W# w1 H+ g; {
set [local-reputation] of myself (local)
! c6 i* W' k  N3 K, d7 Gend
( E7 m& s( k: X7 a3 f- M+ h) E5 w8 Z# j8 Z$ W
to update-neighbor-total
5 [' J4 J4 s$ x! |9 S7 m) S- W
2 {& l# m' A! r) `$ c5 e! @if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]& S2 B, ~/ q/ k& T# H# }- `- H
3 Y* s1 ~, m7 ~! U

% B- l8 @& Z  D9 t8 Fend
  G3 v- T: ?, d9 V% \
, d" K" ?7 O! V- N1 Y% c# ]" Oto update-credibility-ijl * ]6 ]# n! ?! O7 A, Y" S+ L

" D8 y# h' E& S4 u" v;;
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。" _- H0 s* Z! G% U- P* e
let l 0: z" p% W9 |" }+ n
while[ l < people ]
% _6 V/ k- K$ a3 a;;
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
+ M+ g( g/ u; ?" k/ n$ ]" q[" G+ |. i) n+ D4 Y: ^
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
$ y$ `9 J/ ^9 e  Lif (trade-record-one-j-l-len > 3)5 o" }9 ]7 s3 F9 ?9 D$ k, U
[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
; r2 c% I" @/ v& y- llet i 3
1 {- L  p9 f! ]) c) Llet sum-time 0% @% ^2 A5 Z4 E3 h& N3 d
while[i < trade-record-one-len]
" T+ K5 B+ V3 n/ b[
  s+ @  I' y5 h( B8 P( Wset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )! ^4 k1 P+ S7 `2 \5 o
set i
# N5 ]8 k1 h# H+ S3 ~9 _( i + 1)

2 F8 K( K8 M% N) c" D7 @: ~]
8 Y. K0 C( F, p% ylet credibility-i-j-l 0: {0 X5 C' A: o; C3 q
;;i
评价(jjl的评价)
$ B5 d) G  l6 [) U, Jlet j 3; b. }5 w) u+ n( ]5 e9 @$ B
let k 4
) {. B% [! ^/ f1 bwhile[j < trade-record-one-len]7 `5 m. @& Q: D5 H& k/ T
[  v0 Y9 C) O% ?& J; x* r& z  t0 i# W1 Z
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
1 e2 n$ h3 g- p% g: Cset 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)
+ ?& }' g" N+ [7 aset j
9 D, |' f6 V2 O8 K" t5 b5 w9 P2 S( j + 1)

9 U0 I8 y7 B# m+ J+ o8 _* D]
' U8 f! b% w5 u; F, R) ]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 ))* @# U; R5 t+ m6 k

% b  `* _! n/ h0 r7 `
$ j4 Z+ n! ?  e1 F( K1 l: s* b3 F
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
6 _  I! q7 Z2 |8 y;;
及时更新il的评价质量的评价- f4 p. ~7 O# i, q
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]' y& L0 h; c- C2 W/ g+ y2 v
set l (l + 1)
  I2 ?# Q  W# G% s: s" Q7 Q]
( p- \# t) V8 a1 Rend" }+ x2 V6 D  U- P2 `

3 l% w, u( u3 `' L& B; g$ ]& f$ @to update-credibility-list
2 S% D( _8 N3 a( Tlet i 0
: N8 [1 k5 p4 o1 A( D% ?# pwhile[i < people]* ^# V7 r* b9 W9 v! a6 C' w; e
[- }3 A, ~% T' ~8 {* F3 d
let j 0
. @1 @1 V0 L$ j, Vlet note 0
9 m  ~# }: U0 I. B5 W% rlet k 0
& [, w: [/ l3 K" n  X$ f" J3 [3 i3 x4 q;;
计作出过评价的邻居节点的数目% x2 I1 o1 ?! X4 A
while[j < people]
" P/ G& q* s% n. w[' C! w7 V% |( U- L8 \2 @
if (item j( [credibility] of turtle (i + 1)) != -1)  |- d8 H6 w5 L1 f$ m" f
;;
判断是否给本turtle的评价质量做出过评价的节点+ P# L$ ?7 R8 t2 K3 ?$ d) S+ m. W/ @
[set note (note + item j ([credibility]of turtle (i + 1)))7 W4 c( ~# z# @
;;*(exp (-(people - 2)))/(people - 2))]
4 {+ S' z+ K! `! ]  x8 v2 {
set k (k + 1)1 z( b& \0 B. J6 _& A
]
1 S2 d9 j8 S4 x/ v, ]. M; Tset j (j + 1)6 p) Y9 [$ T. B0 I7 S
]
& T8 @" @1 M4 P) Q" |% u/ k$ Zset note (note *(exp (- (1 / k)))/ k); X2 a/ Q& ~# P0 R% k
set credibility-list (replace-item i credibility-list note)& s" L/ ?3 \# c
set i (i + 1)
: |2 F& ]' l& V- z0 U]
: s: [" w6 ^/ D" i- G, Oend+ K' n8 t1 Z" o7 s" _
2 g0 D0 C8 _# R% `1 a$ c1 r
to update-global-reputation-list; }) I# k5 b" [9 [, z9 A
let j 01 Q% \' q1 M7 Y
while[j < people]/ I+ m! e! J8 e/ E+ E& D
[* j& B5 H! F- }0 S
let new 0
1 C" p8 U) u0 C9 h/ F+ \& |+ E, g;;
暂存新的一个全局声誉
# O  F! ?6 ?# {let i 0$ S/ h$ \% |1 \2 x# }' E& I& b
let sum-money 0
2 ~) }8 |$ E/ Q- [; {7 p, alet credibility-money 0) s0 g# S) N/ l' j" U. b" u
while [i < people]( B, y  A. _0 e' k- f$ `4 i
[( v* N) [' j& I. Q
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
, L6 q1 r% p  c$ Y$ e! ^set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- q$ @" F& h( z+ S! cset i (i + 1)
9 |$ _0 Y& V1 R4 |, Z# B/ ?$ p]
) A$ a8 ^  L/ t! ]  S! a0 E4 Ylet k 0- p3 N- ?- e1 u0 o, {7 V
let new1 0% Y/ R( v; y2 k. l1 i8 j
while [k < people]; q7 D. S/ `: G6 w$ J; [, @2 ]0 t! g
[$ @7 `+ t# q: P( K' x
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)/ Z9 \; P* N* ]* I# J) r7 ?) O
set k (k + 1)8 ^: K2 G5 x5 V. n! q$ Y( f  f
]7 f/ V9 Y7 F  t( w6 x
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
1 X* L, J; L" u3 `set global-reputation-list (replace-item j global-reputation-list new)' Y2 A8 L. E2 @& W# Z! @
set j (j + 1)
9 l, n  Q* X' H4 |]9 M. M$ k4 ]% \8 c( @9 w, A: B+ B
end
( K+ i: I, z" b) y: F  B- S) J) N' j, J3 J

! `; L: b* n# F5 v% v( Q- ^+ M" S
to get-color: T3 Y' `' l5 z+ z4 b2 a4 _

( [! L1 W+ U# e) `& Eset color blue
% q" i7 t" L, D3 C
end7 O2 H  d8 f3 M

4 I2 L1 r) u9 ]1 d& pto poll-class$ c: g+ A: P' A  b% W9 j9 e, Y: b
end
% e, Y8 P) z7 g8 F" |- A
" i9 T# a$ F! Sto setup-plot1
6 G! l3 d* i' V' K
/ G$ G6 N5 l8 ^0 Z6 J: H- O+ Pset-current-plot "Trends-of-Local-reputation"

; _# k  D: q+ D( X1 ~' R0 z- b3 l# o% h' y( [: f
set-plot-x-range 0 xmax

; k3 n, Q  S! O- A- _( \" p5 [0 v2 ~* x! I; k$ i
set-plot-y-range 0.0 ymax
; ]1 f0 R9 W) w. b
end% f$ M, q7 e* F2 N

6 ^# v' F" x7 ^  _, nto setup-plot2
3 \/ s  m4 A- ?  Z4 O+ X, A2 V! U
, o; A9 c: P% K7 [+ f! Bset-current-plot "Trends-of-global-reputation"

! L: T5 A9 g; |: ~' D% u4 G' k: D. Y- Y" _: h
set-plot-x-range 0 xmax

( D+ C+ v3 p+ d7 d# M+ \  n$ }6 p5 ~! f( C" H/ U) X
set-plot-y-range 0.0 ymax

$ {  h% U' N  H: eend
5 j% q' K7 {3 i2 I) A& F4 u- I8 p
7 ]) H' ^! [7 V8 }  K( pto setup-plot3* A. |1 ]$ ^1 Z. Q, R1 Q+ H
1 Y- Y2 m" V) S
set-current-plot "Trends-of-credibility"
+ H- g* Q' l$ g0 m# K
7 J. {0 T& m: b# P: h* i; S
set-plot-x-range 0 xmax
0 z: n- p0 X3 [) t5 \4 {* X# r

6 T% U* a6 l7 w9 \5 ~( [" E5 sset-plot-y-range 0.0 ymax

+ p! [! A9 k( ~% C+ k. M$ D- h/ }end
1 m+ p! Z# p9 m  A( q( @! w5 z+ R) Z
to do-plots: C: s0 j! g7 E+ ~  z- Z
set-current-plot "Trends-of-Local-reputation"
1 B( A& F3 u" P5 G( Z8 n6 Q8 b8 i  Jset-current-plot-pen "Honest service"2 g6 m8 y2 t) f4 ^- K8 d
end
( p6 U/ H/ x  ]. M, @# I7 t# K" r5 |8 V# S% t7 K% z
[ 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., l+ N/ }3 \: L0 J* g

* q6 o; I! l' |/ T$ v: }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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